Acura Automobiles: 2015 Acura TLX: Powertrain

As Acura’s premier competition sedan, a 2015 TLX offers some-more energy and drivetrain choices than ever before, with twin all-new direct-injected engines, twin totally new modernized transmissions, and Acura’s next-generation pointing doing record – Super Handling All-Wheel Drive™ (SH-AWD®).

The TLX is accessible in both all-wheel-drive and front-wheel expostulate layouts. Front-wheel expostulate models come customary with Acura Precision All-Wheel Steer (P-AWS) and can be versed with possibly a 2.4-liter 4-cylinder, or 3.5-liter V6 engines. The TLX SH-AWD, with next-generation Super Handling All-Wheel Drive, is accessible usually with a V-6 engine.

The TLX’s twin new Direct Injection (DI) engines brew energy and efficiency. The 2.4-liter DOHC i-VTEC 4-cylinder engine produces a rise 206 horsepower and 182 lb.-ft. of torque. It has some-more horsepower and almost some-more torque—particularly in a mid-range—than a same-sized engine that powers a TSX sedan. Even yet a TLX is incomparable and heavier than a effusive TSX 4-cylinder, it indeed posts aloft EPA fuel-economy ratings of 24/35/281 mpg city/hwy/combined.

A new 3.5-liter approach injected i-VTEC® 24-valve V-6 engine replaces a 3.5-liter and 3.7-liter engines in a TL. The new powerplant gains 10 horsepower (290 rise horsepower) and 13 lb.-ft. or torque (267 lb.-ft.) compared to a 3.5-liter V-6 in a TL sedan. To boost fuel efficiency, Variable Cylinder Management (VCM) automatically deactivates 3 of a engine’s 6 cylinders underneath light engine loads. TLX SH-AWD models also supplement a new involuntary idle-stop underline to serve urge fuel efficiency.

The front-wheel expostulate TLX with V-6 and P-AWS has an EPA fuel-economy rating of 21/34/251 mpg city/hwy/combined; a TLX SH-AWD is EPA rated during 21/31/251 mpg city/hwy/combined. Compared to a 2014 TL with involuntary transmission, a front-wheel-drive TLX V-6 has a 17-percent boost in EPA highway fuel economy ratings, and a TLX SH-AWD has a 19-percent fuel economy-ratings gain.

To make a many of these powerful, polished and fit new engines, a TLX facilities twin rarely modernized new transmissions. 2.4-liter TLX models have a customary 8-Speed Dual-Clutch Transmission (DCT) featuring Sequential SportShift, a world’s initial fibre of this form to be interconnected with a torque converter. The DCT, with a closely-spaced ratios, ultra-quick shifts and involuntary downshift rev-matching, gives a 2.4-liter TLX an aggressively sporting feel. The torque converter provides unusually well-spoken operation in stop-and-go situations, and it offers off-the-line torque computation for almost softened initial acceleration that a DCT alone can't equal.

3.5-liter TLX models are versed with an all-new 9-speed involuntary fibre featuring Sequential SportShift, that is almost lighter than a 6-speed involuntary in a prior TL. The fibre is engineered to hoop a V-6’s estimable energy output, and a closely spaced rigging ratios raise opening and fuel efficiency. No rival car in a shred offers as many fibre ratios.

A new era of Acura’s acclaimed Super Handling All-Wheel Drive™ is customary in a TLX SH-AWD. SH-AWD gradually distributes torque not usually between a front and behind axles, though also between a left and right behind wheels. Using torque vectoring to assistance spin a vehicle, SH-AWD creates a some-more responsive, neutral and predicted height while providing superb all-weather certainty and control. In a TLX, torque-vectoring efficacy has been severely enhanced, benefiting responsiveness, lively and stability.

Front-wheel expostulate models underline a latest chronicle of Acura’s Precision All-Wheel Steer™ (P-AWS), which, like SH-AWD, is designed to assistance give a TLX larger lively and doing balance. For some-more information on P-AWS, see a Chassis section.

Powertrains during Glance

2.4-liter DOHC i-VTEC

  • 2.4-liter, DOHC, inline-four engine produces rise outlay of 206 horsepower during 6,800 rpm and rise torque of 182 lb.-ft. during 4,500 rpm
  • i-VTEC® (intelligent Variable Valve Timing Control and Lift Electronic Control) for intake valves
  • Computer-controlled Direct Injection (DI) with multi-hole fuel injectors
  • 11.6:1 application ratio
  • High-strength steel crankshaft
  • Drive-by-Wire™ stifle system
  • Direct ignition system
  • Detonation/knock control system
  • Integrated Dynamics System (IDS) provides 3 singular drive-by-wire stifle profiles
  • Maintenance Minder™ complement optimizes use intervals
  • 100,000 +/- miles tune-up interval3
  • High-flow, close-coupled next-generation changed steel catalytic converter and underneath building catalytic converter
  • ULEV-2 Emissions compliant
  • 24/35/281 (city/highway/combined) mpg EPA fuel-economy ratings (FWD)

Sequential SportShift 8-Speed Dual-Clutch Transmission (DCT) with Torque Converter and Paddle Shifters

  • World’s initial DCT to be versed with a torque converter
  • Straight-gate character console-mounted shifter
  • Sequential SportShift allows semi-manual operation
  • Steering wheel-mounted, racing-inspired paddle shifters
  • Cooperative control between Drive-by-Wire stifle complement and fibre creates for quicker, smoother shifts
  • Advanced shift-hold control boundary adult shifts during energetic pushing
  • Grade Logic Control System reduces rigging “hunting” on high hills

3.5-liter SOHC i-VTEC V-6 with VCM

  • 3.5-liter, SOHC, V-6 engine produces rise outlay of 290 horsepower during 6,200 rpm and rise torque of 267 lb.-ft. during 4,500 rpm
  • i-VTEC® (intelligent Variable Valve Timing and Lift Electronic Control) for intake valves with Variable Cylinder Management™ (VCM®)
  • Computer-controlled Direct Injection (DI) with multi-hole fuel injectors
  • 11.5:1 application ratio
  • High-strength steel crankshaft
  • Crossflow magnesium intake plural
  • Drive-by-Wire™ stifle system
  • Direct ignition system
  • Detonation/knock control system
  • Integrated Dynamics System (IDS) provides 3 singular drive-by-wire profiles
  • Maintenance Minder™ complement optimizes use intervals
  • 100,000 +/- miles tune-up interval3
  • High-flow, close-coupled next-generation changed steel catalytic converters and underneath building catalytic converter
  • ULEV-2 Emissions compliant
  • 21/34/251 (city/highway/combined) mpg EPA fuel economy ratings (2WD)
  • 21/31/251 (city/highway/combined) mpg EPA fuel economy ratings (SH-AWD)

Sequential SportShift 9-Speed Automatic with Paddle Shifters

  • Electronic shift-by-wire rigging selector
  • Sequential SportShift involuntary fibre allows semi-manual operation
  • Steering circle mounted racing-inspired paddle shifters
  • Cooperative control between Drive-by-Wire stifle complement and fibre creates for quicker, smoother shifts
  • Advanced shift-hold control boundary adult shifts during energetic pushing
  • Grade Logic Control System reduces rigging “hunting” on several highway gradients
  • Continuously adaptive Sport+ environment that selects change strategies matched for assertive pushing conditions

Direct-Injected 2.4-liter Inline 4-cylinder Engine
The TLX’s new Direct Injection (DI) 2.4-liter DOHC i-VTEC 4-cylinder engine brings a horde of intelligent record to a segment. The engine’s i-VTEC complement combines VTC (Variable Timing Control), that invariably adjusts a intake camshaft phase, with Variable Valve Timing and Lift Electronic Control (VTEC), that changes valve lift, timing and era of a intake valves. A new Direct Injection (DI) system, dual-stage intake plural and other technologies brew to furnish adult to 10-percent some-more torque as compared to a same sized engine that is customary in a TSX Sedan, with larger energy accessible over a whole doing range. Peak energy (206 horsepower) is also aloft than that of a TSX engine, with a rise nearing during 6,800 rpm instead of 7,000 rpm.

Fuel economy ratings are exceptional, due in partial to fit Direct Injection, a new explosion cover design, equivalent cylinder bores and a operation of friction-reducing technologies. The TLX versed with a 2.4-liter engine and customary 8-speed dual-clutch fibre has an EPA fuel-economy rating of 24/35/281 mpg city/hwy/combined. That’s a poignant boost over a smaller TSX sedan, that was rated during 22/31/261 when versed with an involuntary transmission. The 4-cylinder engine meets ULEV-2 emissions standards in name states, and Federal Tier 2, Bin 5 standards.

4-Cylinder Engine Block, Crankshaft and Pistons
The TLX’s 2.4-liter engine has a lightweight die-cast aluminum retard with a singular main-bearing cradle pattern that creates a firm public to assistance minimize sound and vibration. Cast-in iron cylinder liners produce long-lasting durability. Each biography on a forged-steel crankshaft is micropolished to revoke inner friction. To urge fibre around a rpm operation and assistance revoke sound levels, a engine is propitious with an inner balancer unit. Consisting of a span of chain-driven counter-rotating shafts located in a revoke retard and integrated into a oil pan, a balancing complement helps relieve a fundamental second-order harmonic vibrations that routinely impact inline 4-cylinder engines.

To revoke piston-sliding friction, a cylinder bores are equivalent by 8.0 mm from a crankshaft. This gives a joining rods a some-more auspicious angle during any energy stroke, that reduces side loading on a pistons and in turn, improves efficiency. The engine facilities a fake crankshaft for high acerbity and low friction. Lightweight pistons have a delicately optimized dress pattern to minimize reciprocating weight, and reduced weight minimizes quivering and increases doing efficiency. The piston crowns are dished, to assistance say fast explosion and to optimize placement of a stratified fuel assign from a approach injector in any cylinder. This tighten control over a explosion routine boosts altogether doing efficiency.

4-Cylinder Dual-Stage Intake Manifold
To maximize energy output, a 2.4-liter engine has a dual-stage intake plural has twin opposite intake curtain lengths that are comparison formed on a doing conditions. An actuator and a set of 4 moth valves control a intake curtain switching process. At low engine speeds, a prolonged runners are used to urge low-end torque. At aloft engine speeds a complement switches to a brief intake runners for larger high rpm power. The outcome is intake tuning that is optimized for a engine’s whole doing range.

2.4-liter Engine Cylinder Head and Valvetrain
The lightweight cylinder conduct is done of pressure-cast aluminum alloy, with empty passages expel directly into a cylinder head. This eliminates a need for a normal apart empty plural and allows a close-coupled catalytic converter to be mounted directly to a cylinder head.

A silent-chain drives a twin over cams and facilities a double-arm tensioner pattern that reduces doing friction. The cam expostulate is designed to be upkeep giveaway around a life of a engine.

To assistance boost fuel potency and power, a explosion cover figure and valve angles have been optimized. The enclosed valve angle is a slight 35 degrees, that decreases a surface-to-volume ratio and helps emanate a flatter, some-more compress explosion cover that reduces unburned hydrocarbon emissions. With this explosion cover figure and a accurate control of approach injection, a application ratio set during 11.6:1.

The cylinder conduct facilities a new “tumble port” intake design. In multiple with a new explosion cover and piston climax shape, a design’s high spin of airflow diminution helps emanate a homogenous fuel rebate for low fuel expenditure and high airflow for high energy output.

2.4-Liter Engine iVTEC Valve Control System
The TLX’s direct-injected 2.4-liter DOHC 16-valve i-VTEC engine uses an modernized valve-control complement to brew high energy outlay with high fuel potency and low emissions. The complement combines VTC (Variable Timing Control), that invariably adjusts a intake camshaft phase, with Variable Valve Timing and Lift Electronic Control (VTEC), that changes valve lift, timing and era of a intake valves.

At low rpm, a VTEC intake valve timing and lift are optimized for high torque and low fuel consumption.. As engine rpm builds past 4,900 rpm, a VTEC complement transitions to a high-lift, long-duration intake cam form for aloft high-rpm engine power.

The “intelligent” apportionment of a complement is a ability to invariably change a timing of a intake cam relations to that of a empty camshaft. This helps boost energy and also provides a smoother idle (allowing idle speed to be reduced). The intake cam timing is sundry formed on submit from sensors that guard rpm, timing, stifle opening, cam position and empty air-fuel ratio. The outcome is augmenting fuel potency and revoke NOx emissions.

3.5-liter V-6 Engine
The TLX 3.5-liter i-VTEC® V-6 is closely compared to a 3.5-liter V-6 that powers a RLX and MDX. It has a die-cast lightweight aluminum amalgamate retard with cast-in-place iron cylinder liners, a smooth-firing 60-degree V-angle, and compress altogether dimensions. As in a 2014 Acura RLX and MDX, a TLX powerplant combines Direct Injection with i-VTEC and Variable Cylinder Management (VCM) to give a TLX estimable fuel economy ratings and altogether performance. This clean-running engine meets ULEV-2 emissions standards in name states, and Federal Tier 2, Bin 5 standards.

A far-reaching operation of improvements, including revised intake and empty ports and new valve timing, assistance make a 3.5-liter V-6 some-more absolute than a 3.5-liter V-6 engine it replaces. The aluminum-alloy 24-valve engine produces 290 horsepower during 6,200 rpm and generates 267 lb-ft of torque during 4,500 rpm — gains of 10 horsepower and 13 lb.-ft., respectively. Torque has also softened around a whole doing range, with a many estimable gains during low rpm, helping a TLX’s responsiveness.

The new V-6 contributes to a 17-percent boost in a EPA highway fuel-economy rating of a 2015 TLX with front-wheel drive, and a 19-percent benefit in a TLX SH-AWD, when compared with a 2014 TL. The TLX V-6 versed with a customary 9-speed involuntary fibre and Precision All-Wheel Steer has an EPA fuel-economy rating of 21/34/251 mpg city/hwy/combined. The TLX SH-AWD has a rating of 21/31/251 mpg city/hwy/combined.

V-6 Engine Block and Crankshaft
With a 60-degree V-angle, a TLX’s accessible V-6 engine has compress altogether magnitude that concede fit wrapping within a vehicle. The V-6 has a die-cast lightweight aluminum amalgamate retard with cast-in-place iron cylinder liners. Made with a centrifugal spin-casting process, a thin-wall liners are high in strength and low in porosity. The retard incorporates a deep-skirt pattern with 4 bolts per temperament top for firm crankshaft support and minimized sound and vibration. The 3.5-liter V-6 uses a high-strength steel crankshaft for smallest weight. A cooling control spacer positioned in a H2O coupler surrounding a cylinders helps control warm-up and doing cylinder ship temperatures to revoke friction.

V-6 Pistons/Connecting Rods
Designed with “cavity-shaped” crowns, a V-6 engine’s pistons assistance say fast explosion and minister to optimized combustion. Ion-plated piston rings assistance revoke attrition for larger doing efficiency. The application ratio (relative to a 2014 TL 3.5- and 3.7-liter engines) has risen from 11.2:1 to 11.5:1. Heavy-duty steel joining rods are fake in one square and afterwards a joining rods are “crack separated” to emanate a lighter and stronger rod with an optimally propitious temperament cap.

V-6 Cylinder Heads and Valvetrain
Like other Acura V-6 powerplants, a TLX engine’s 4-valve cylinder heads are a single-overhead-camshaft design, with a cams driven by a crankshaft around an automatically tensioned toothed belt. Made of low-pressure cast, low-porosity aluminum, any cylinder conduct incorporates a laminar upsurge intake pattern that improves explosion potency by formulating a some-more comparable fuel-air mixture. An integrated empty plural expel into any cylinder conduct reduces tools count, saves weight, improves upsurge and optimizes a plcae of a close-coupled catalyst.

V-6 i-VTEC with 2-Stage Variable Cylinder Management™ (VCM®)
The TLX SOHC V-6 combines Variable Cylinder Management (VCM) with Variable Valve Timing and Lift Electronic Control (i-VTEC), that changes a lift form and so timing and lift era of a intake valves. A switching resource allows a engine to work with a lift and era optimized for possibly low or high-rpm operation. The behind cylinder bank closes all intake and empty valves to minimize pumping waste on a cylinders that are still firing, augmenting altogether engine efficiency.

The “intelligent” apportionment of a complement is a ability to change valve operation formed on a pushing conditions and engine rpm. At low rpm, a i-VTEC intake valve timing and lift are optimized (low lift, brief duration) for augmenting torque, that allows a far-reaching operation of 3-cylinder operation. As engine rpm builds past 5,000 rpm, a i-VTEC complement transitions to a high-lift, long-duration intake cam form for aloft high-rpm engine power.

V-6 VCM Operation — To assistance urge a fuel potency of a TLX engine, Acura’s Variable Cylinder Management (VCM) is used. The complement cooperates with Active Control engine Mounts (ACM) to concede a engine to work with 3 cylinders in a far-reaching operation of situations to maximize fuel potency and revoke emissions. When larger energy is needed, a complement switches seamlessly to 6-cylinder operation.

During startup, assertive acceleration, or high ascents — any time high energy outlay is compulsory — a engine operates on all 6 cylinders. During moderate-speed cruising and during low or assuage engine loads, a complement operates usually a front bank of 3 cylinders.

The VCM complement can tailor a operative banishment of a engine to compare a pushing mandate from impulse to moment. Since a complement automatically closes both a intake and empty valves of a cylinders that are not used, pumping waste compared with intake and empty are separated and fuel potency gets a serve boost. The complement combines limit opening and limit fuel potency — twin characteristics that don’t typically coexist in compulsory engines.

VCM deactivates specific cylinders by regulating a i-VTEC (intelligent Variable Valve-Timing and Lift Electronic Control) complement to tighten a intake and empty valves while a Electronic Control Unit (ECU) concurrently cuts fuel to those cylinders. The hint plugs continue to glow in dead cylinders to minimize block heat detriment and forestall fouling prompted from deficient explosion during cylinder re-activation.

The complement is electronically controlled, and uses special integrated bobbin valves in a cylinder heads. Based on commands from a system’s Electronic Control Unit, a bobbin valves selectively approach oil vigour to a rocker arms for specific cylinders. This oil vigour in spin drives synchronizing pistons that bond and undo a rocker arms.

The VCM complement monitors stifle position, car speed, engine speed, automatic-transmission rigging preference and other factors to establish a scold cylinder activation intrigue for a doing conditions. In addition, a complement determines possibly engine oil vigour is suitable for VCM switching and possibly catalytic-converter heat will sojourn in a correct range. To serve well-spoken a activation or deactivation of cylinders, a complement adjusts ignition timing and stifle position and turns a torque converter lock-up on and off to seamlessly transition between 3 and 6 cylinder modes.

V-6 SH-AWD Idle Stop System
To assistance urge fuel efficiency, TLX SH-AWD models come versed with a new Idle Stop capability. When a complement is active and certain doing conditions are met, a TLX engine will automatically close off when a car comes to a stop. When a motorist releases a stop pedal after a stop, a engine automatically restarts and a TLX is prepared to accelerate.

The complement is engineered to work uniformly and seamlessly. When stopped, a special cold storage evaporator in a atmosphere conditioning complement helps say a gentle cabin heat even in comfortable weather. The TLX’s active engine mounts assistance well-spoken a restart. Idle Stop operation is entirely integrated into a operation of a TLX’s Brake Hold complement and a accessible Adaptive Cruise Control (ACC) with Low Speed Follow.

V-6 Active Control Engine Mounts and Active Sound Control
A absolute 28-volt Active Control Engine Mount complement (ACM) is used to minimize a effects of engine quivering as a VCM complement switches cylinders on and off. The 28-volt ACM is a pivotal cause in a VCM’s extended operation of operation in a new TLX. Sensors warning a Electronic Control Unit (ECU) to approach ACM actuators positioned during a front and behind of a engine to cancel engine quivering regulating a reverse-phase motion. In a cabin of a TLX, an Active Sound Control (ASC) complement serve mitigates low magnitude sound that can start during 3-cylinder operation. (See Interior territory for some-more information.)

There are twin opposite Active Sound Control profiles accessible in a TLX. When a Integrated Dynamics System (IDS) is in a ECON or Normal setting, a ASC is tuned for limit interior quietness. When a IDS Sport or Sport+ mode is selected, a ASC allows a some-more assertive interior engine and empty note. (See Chassis territory for some-more information)

V-6 Long Range Remote Engine Start with Vehicle Feedback
The 3.5-liter TLX with Advance Package provides a ability to start a vehicle’s engine remotely. This enables drivers to start their TLX, thereby activating a meridian control complement and heated/ventilated seats before they enter a car — ideal for prohibited or cold days. The remote is designed to have a operation of operation of adult to about ½ mile. To start a engine remotely, a owners presses a LOCK symbol on a remote and afterwards binds a ENGINE symbol for a few seconds. When a engine is started remotely, a wipers, lighting and audio systems sojourn off, and a certainty complement stays set. The engine will run for adult to 10 mins after remote starting, and afterwards close off automatically if a owners doesn’t strech a car within that time. When a owners does get to a TLX within 10 minutes, a engine will keep regulating while a owners unlocks a vehicle.

This complement also provides feedback to a owners to endorse possibly a engine is regulating or a car is locked. The remote has 3 LED indicators: amber, immature and red. To endorse engine start, a owners presses a LOCK symbol and afterwards binds a ENGINE symbol for a few seconds. The amber indicator will peep while a remote communicates with a vehicle. If a engine is running, a immature LED will afterwards light for one second. If a engine is not running, a red indicator will light for one second. To establish possibly a car is locked, a owners presses a LOCK symbol once. After a amber light comes on, possibly a immature or red LED will light for one second to prove that a car is sealed or not, respectively. And if a red LED flashes 3 times, a car is out of a remote’s range.

This complement can produce owners with a comfort of a pre-warmed and de-fogged/defrosted car on a cold winter morning — or a pre-cooled interior on prohibited days. Plus, it adds a preference and certainty of meaningful that their car is firmly locked, even distant over a operation of a customary remote.

Common Engine Features

Cold-Air Induction System
To maximize energy output, a TLX has a cold-air intake complement that picks adult engine initiation atmosphere from a grille area during a front of a vehicle, that is typically about 5 percent cooler than a atmosphere in a prohibited engine compartment. Cooler intake atmosphere has larger density, that allows a Direct Injection complement to supplement proportionately some-more fuel for extended energy output.

Direct Injection System
Both 4-cylinder and V-6 TLX engines underline fit approach injection. The complement facilities a compact, high-pressure, direct-injection siphon that allows both high fuel upsurge and tapping suppression, while non-static vigour control optimizes injector operation. A multi-hole injector delivers fuel directly into any cylinder (not to a intake port, as in compulsory pier fuel injection designs), permitting for some-more fit explosion and larger energy output.

The multi-hole injectors assistance emanate a ideal stoichiometric fuel/air rebate in a cylinders for good emissions control. Theoretically, a stoichiometric rebate has usually adequate atmosphere to totally bake a accessible fuel. Based on a doing conditions, a direct-injection complement alters a duty for best performance. Upon cold engine startup, fuel is injected into a cylinders on a application stroke. This creates a diseased stratified assign outcome that improves engine start-up and reduces empty emissions before a normal doing heat is reached. For limit energy and fuel efficiency, fuel is injected during a intake cadence once a engine is entirely warmed up. This helps emanate a some-more comparable fuel/air brew in a cylinder. This improves volumetric efficiency, and a cooling outcome of a incoming fuel improves anti-knock performance.

Drive-by-Wire™ Throttle System
The TLX Drive-by-Wire™ stifle complement replaces a compulsory stifle wire with intelligent wiring that “connect” a accelerator pedal to a stifle valve inside a throttle-body. The outcome is rebate under-hood confusion and revoke weight, as good as quicker and some-more accurate stifle actuation. Plus, a specifically involuntary “gain” rate between a stifle pedal and engine offers softened drivability and optimized engine response to fit specific pushing conditions.

Acura’s Drive-by-Wire stifle complement establishes a stream pushing conditions by monitoring stifle pedal position, stifle valve position, engine speed (rpm) and highway speed. This information is used to conclude a stifle control attraction that gives a TLX’s stifle pedal a predicted and manageable feel that meets motorist expectations.

Three opposite stifle profiles are accessible in a TLX. When a Integrated Dynamics System (IDS) is in a ECON mode, a complement uses a light form that encourages fuel savings. In Normal mode, a stifle form balances economy and opening for all-around driving. When a Sport or Sport+ mode is selected, a complement switches to a some-more assertive stifle map to raise responsiveness.

Direct Ignition and Detonation/Knock Control
The TLX’s Electronic Control Unit (ECU) monitors engine functions to establish a best ignition hint timing. Engine block-mounted acoustic detonation/knock sensors “listen” to a engine, and formed on this input, a ECU can retard a ignition timing to forestall potentially deleterious detonation. An ignition curl territory for any cylinder is positioned above any hint plug’s entrance bore.

Close-Coupled Catalysts
The empty manifolds of both TLX engines are expel directly into a aluminum cylinder heads to revoke weight, diminution tools count, and emanate some-more underhood space. The outcome of this casting pattern is that a primary catalytic converters are positioned most closer to a explosion chambers, enabling intensely fast converter “light-off” after engine start. A poignant weight assets is satisfied by expelling normal empty manifolds.

Emissions Control
Both 2015 TLX engines accommodate a tough EPA Tier 2/Bin 5 and CARB LEV II ULEV emissions standards, and are approved to this spin of emissions opening for 120,000 miles. A series of modernized technologies are factors in a emissions performance. The singular cylinder head-mounted close-coupled catalytic converters light off some-more fast after engine start up, and a 32-bit RISC microprocessor within a Electronic Control Unit (ECU) boosts computing energy to urge a pointing of hint and fuel delivery.

Both engines underline Programmed Fuel Injection (PGM-FI) that ceaselessly adjusts a fuel fibre to produce a best multiple of power, low fuel expenditure and low emissions. Multiple sensors constantly guard vicious engine doing parameters such as intake atmosphere temperature, ambient atmosphere pressure, stifle position, intake airflow volume, intake plural pressure, coolant temperature, exhaust-to-air ratios, as good as a position of a crankshaft and a camshafts.

Friction-Reducing Technologies
Both TLX engines make use of friction-reducing technologies designed to urge engine efficiency. The outdoor skirts of lightweight aluminum pistons underline a special cloaking that reduces altogether attrition as a pistons pierce within a cylinder bores. Plateau honing serve lowers a attrition spin between a pistons and a cylinders by formulating an ultra-smooth surface. Plateau honing is a 2-stage machining routine that uses twin harsh processes instead of a some-more compulsory singular honing process. This also enhances a long-term wear characteristics of a engine.

One-Touch Start System
To safeguard unchanging starting, a TLX has a one-touch start complement that maintains starter rendezvous until a engine starts. Should a motorist recover a Start symbol before a engine starts, a complement will start a vehicle. Simply lift a Start symbol (with a feet on a stop pedal and a fob in a vehicle) and a engine will automatically start up.

100,000+/- Mile Tune-up Intervals
The TLX’s engines no scheduled upkeep for 100,000+/- miles or more, other than periodic inspections and normal liquid and filter replacements. The initial tune-up includes H2O siphon inspection, valve adjustment, designation of new hint plugs, and in V-6 models, deputy of a camshaft timing belt.

Maintenance Minder™ System
To discharge nonessential use stops while ensuring that a car is scrupulously maintained, a TLX has a Maintenance Minder™ complement that ceaselessly monitors a vehicle’s doing condition. When upkeep is required, a motorist is alerted around a summary on a Multi-Information Display (MID).

The Maintenance Minder™ complement monitors doing conditions such as oil and coolant heat along with engine speed to establish a correct use intervals. Depending on doing conditions, oil change intervals can be extended to a limit of 10,000 miles, potentially provident a owners estimable responsibility and nuisance over a life of a vehicle. The owner-resettable complement monitors all normal use tools and systems, including oil and filter, tire rotation, air-cleaner, involuntary fibre fluid, hint plugs, timing belt, coolant, stop pads and more. To lessen a intensity for motorist distraction, upkeep alerts are presented on a MID usually when a ignition is initial incited on, not while driving.

Sequential SportShift 8-Speed Dual-Clutch Transmission (DCT) with Torque Converter
To maximize opening and fuel efficiency, a 2.4-liter TLX has a customary 8-Speed Dual-Clutch Transmission (DCT), a world’s initial fibre of this form to be interconnected with a torque converter. In a 8-speed DCT, one purchase controls a peculiar gears while a other purchase controls a even gears. This arrangement allows rigging changes with a most smaller stop in energy to a wheels, ensuing in millisecond-quick shifts. In addition, a DCT’s fit energy fibre and wider altogether ratio operation minister to a TLX’s estimable benefit in fuel potency compared to a effusive TSX 4-cylinder.

Compared to a compulsory primer transmission, a operation of a clutches and changeable mechanisms are electronically controlled, expelling a need for a purchase pedal or primer change lever. The DCT with a closely spaced ratios, ultra-quick shifts and involuntary downshift rev-matching, gives a TLX 4-cylinder an refreshing and sporty feel. The DCT fibre in a TLX also facilities a steering wheel-mounted paddle shifter complement that lets a motorist take primer control of fibre rigging selection, serve worsening a pushing experience.

The ultra-thin torque converter complements a fit operation of a DCT by providing unusually well-spoken operation in stop-and-go situations, and it offers off-the-line torque computation for softened initial acceleration that a DCT alone can’t equal. In an assertive standing-start launch, a torque converter almost improves acceleration in a initial 1.4 seconds, or about a initial 60 feet (as compared to a DCT alone).

Sequential SportShift 9-Speed Automatic Transmission
2015 TLX V-6 models are versed with an all-new 9-speed involuntary fibre featuring Sequential SportShift. The Sequential SportShift 9-speed involuntary is 66 lbs. lighter than a 6-speed involuntary in a prior TL, with some-more closely spaced rigging ratios and 25 percent faster rigging shifts that raise opening and fuel efficiency.

The console-mounted change lift is transposed with a entirely electronic, shift-by-wire rigging selector. Park, Neutral and Drive are comparison with a lift of a button. Reverse is comparison by pulling behind a dedicated switch. Indicator lights nearby a buttons prove a mode selected. As an combined reserve feature, if a car is brought to a stop in Drive, a complement will automatically name Park if a driver’s seatbelt is unbuckled and a driver’s doorway is opened. A steering wheel-mounted paddle shifter complement lets a motorist take primer control of fibre rigging selection.

Common Transmission Features

Cooperative Transmission Control
Both change opening and fibre are softened by mild control between a Drive-by-Wire stifle complement and a twin accessible transmissions. The engine is throttled by a engine government complement during upshifts and downshifts; so a duty of a engine and fibre can be closely choreographed for faster, smoother shifting. As a result, a rise g-forces (or “shift shock”) are reduced significantly during upshifts and downshifts.

Automatic Modes
Both TLX transmissions can be operated in twin different, entirely involuntary modes, that are tranquil by a Integrated Dynamics System (IDS) switch that is positioned on a core console. In Econ, Normal and Sport IDS modes, a fibre combines fuel potency with well-spoken operation and manageable energy when needed. When a IDS is placed in Sport+ mode, a fibre switches to some-more assertive mapping that puts a importance on performance-oriented driving, with aloft engine rpm for larger acceleration and response.

Smart Transmission Logic
Both transmissions incorporate an modernized Grade Logic Control System, Shift Hold Control and Cornering G Shift Control — all of that revoke neglected changeable and rigging hunting. The outcome is intelligent fibre operation that optimizes fuel potency and keeps a fibre in a suitable rigging for pushing conditions, generating glorious opening and well-spoken operation.

While forward or forward hills, Grade Logic Control alters a transmission’s change report to revoke change magnitude and urge speed control. The fibre ECU ceaselessly measures stifle position, car speed and acceleration/deceleration to establish when a car is on a hill. The change report is afterwards practiced — during ascents to reason a fibre in revoke gears to boost climbing power, and during descents to produce larger engine braking.

Shift Hold Control keeps a fibre in a stream (lower) rigging ratio during assertive driving, as in a box of decelerating during a dilemma entry. Shift Hold Control leaves a framework composed by expelling additional changeable and ensures that energy will be immediately accessible (without a downshift) during a dilemma exit. Cornering G Shift Control monitors a car parallel acceleration to establish when a TLX is turning. When a complement detects sufficient cornering speed, it will conceal any neglected upshifts. This prevents a fibre from upshifting during a corner, that could dissapoint a framework change so requiring downshifting again during a dilemma exit when a stifle is applied.

Paddle Shifter Operation in Econ, Normal and Sport Integrated Dynamic System (IDS) Modes
While in Econ, Normal or Sport IDS modes, special fibre proof programming allows a use of a steering-wheel-mounted paddle shifters. When a motorist operates a paddle shifters, a fibre responds to a driver’s change authority and afterwards earnings to a normal entirely involuntary mode if serve paddle change inputs are not done within a given time. This special proof creates it easy for a motorist to authority a discerning downshift though withdrawal a preference of Drive mode.

Paddle Shifter Operation In Sport+ Mode
When a Integrated Dynamics System (IDS) is switched to a Sport+ mode, a lift on a racing-inspired paddle shifters (mounted on a steering wheel) places a fibre in entirely primer mode until another mode of operation is selected. A digital arrangement in a instrument cluster indicates that rigging a fibre is in.

A double-kick-down underline lets a motorist authority a sport-minded double downshift — such as from Fifth to Third gear. By pulling on a left downshift paddle twice in fast succession, a fibre will dump directly to a selected revoke rigging ratio. The Drive-by-Wire stifle complement also creates a “blip” of a stifle to assistance compare rigging speeds while downshifting.

To forestall mistreat to a powertrain when a fibre is paddle shifted by a motorist (including during double-kick-down shifts), a complement will stop potentially deleterious shifts. As an combined reserve measure, a Electronic Control Unit (ECU) can also cut off fuel to a engine to forestall over-revving. If fuel cut-off is deficient to forestall engine over-revving, as might be probable when a car is on a high downhill, a fibre will automatically upshift to forestall damage. On downshifts, a fibre will not govern a motorist authority that will over-rev a engine.

Front Wheel Drive
The TLX offers front circle drive, interconnected with possibly a 4-cylinder or V-6 engine. With a fit and lightweight design, a TLX front circle expostulate complement creates a poignant grant to altogether fuel efficiency.

The latest chronicle of Acura’s Precision All-Wheel Steer™ (P-AWS) is customary on all front-wheel expostulate TLX models, and helps give a TLX best-in-class energetic opening during all speeds. See a Chassis territory for some-more information on P-AWS.

The complement is complemented by Agile Handling Assist, that employs a anti-lock stop complement to away stop possibly a left or right behind circle to revoke bend check (the duration between steering circle submit and a revolution of a body) to urge dilemma traceability and balance. (See Chassis territory for some-more information.)

Super-Handling All-Wheel Drive™ (SH-AWD®)
The TLX SH-AWD facilities a new hydraulically tranquil iteration of Acura’s acclaimed Super Handling All-Wheel Drive™ (SH-AWD®), that gradually distributes best torque not usually between a front and behind axles, though also between a left and right behind wheels. Like a P-AWS counterpart, a TLX SH-AWD complement is complemented by Agile Handling Assist (See above and Chassis territory for some-more information.)

The advantages of a SH-AWD complement are aloft all-weather doing and neutral, accurate steering underneath energy that is unmatched by front-drive, rear-drive or compulsory all-wheel-drive systems.

By rotating a outward behind circle faster than a front spindle while cornering, SH-AWD uses torque vectoring to emanate a bend impulse to assistance spin a car by a dilemma — shortening understeer and improving controllability. With cornering army some-more uniformly distributed between front and behind tires, altogether cornering energy is augmenting — on soppy or dry roads.

Vehicles with high energy ratings regulating compulsory front or behind expostulate systems mostly occupy a limited-slip differential to assistance say traction when underneath power. By joining inside and outward expostulate wheels, these systems tend to conflict branch and can boost understeer. Conventional AWD systems likewise work to couple a inboard and outboard tires as good as a front and behind axles, that can emanate insurgency to turning. Using torque vectoring to assistance spin a vehicle, SH-AWD delivers some-more responsive, neutral and predicted doing opening while providing superb all-weather traction and control.

Controls and Parameters — The SH-AWD complement works in team-work with a TLX’s Vehicle Stability Assist™ (VSA®) complement and Agile Handling Assist to optimize torque placement for aloft doing and traction utilization. The Electronic Control Unit (ECU) provides information on engine torque, airflow and fibre gear-ratio selection, while a VSA ECU provides wheel-speed data. The SH-AWD ECU also monitors steering angle, steering angle rate of change, parallel G-forces, car bend rate and hydraulic purchase vigour for a right and left behind spindle shafts. Drive torque is distributed from ECU information, and afterwards a acceleration situation, circle spin, parallel G-force, steering angle and steering angle rate-of-change are used to establish a front-to-rear torque placement and a torque separate between right and left behind wheels.

SH-AWD doing parameters include:

  • Up to 90-percent of accessible torque can be eliminated to a front wheels during normal cruising.
  • In tough cornering and underneath acceleration, adult to 70-percent of accessible torque can be destined to a behind wheels to raise car dynamics.
  • Up to 100-percent of a torque sent to a behind spindle can be practical to possibly a left or right behind wheel, depending on conditions.

SH-AWD System Layout — The TLX SH-AWD is a full-time all-wheel-drive complement that requires no motorist communication or monitoring, interjection to a torque-transfer territory that is bolted directly to a front-mounted transaxle. The torque-transfer territory receives torque from a scrolled rigging that is trustworthy to a front differential’s ring gear, and a brief plane missile and hypoid rigging set within a torque-transfer unit’s box send energy to a behind propeller shaft, that in spin transfers energy to a behind expostulate unit.

The TLX’s new, some-more lightweight (25 percent reduction) SH-AWD behind expostulate territory is constantly overdriven by 2.7-percent (the prior era TL complement was overdriven by 1.7-percent). The ensuing overdrive outcome is regulated by left- and right-side purchase packs (located in a behind differential) that exclusively control a energy delivered to any behind wheel. The augmenting overdrive commission in a new TLX means that a torque vectoring outcome is some-more conspicuous and effective even in corners with a radius of as tiny as 49.2 feet (15 meters). This means that torque vectoring can be felt some-more often, such as when accelerating aggressively by a customary corner. Up to 885 lb.-ft. of torque can be delivered to possibly behind wheel, that gives a complement a singular ability to bend a TLX into turns for aloft handling.

Hydraulically operated purchase systems mounted on possibly side of a hypoid rigging that drives a behind axles control a volume of torque sent to any behind circle and produce a limited-slip differential duty when needed. The clutches can be tranquil as a span to change front/rear torque separate or they can be tranquil exclusively to concede 100-percent of accessible behind spindle torque to go to usually one behind wheel.

In this new iteration of SH-AWD, a singular electric engine powers a span of hydraulic pumps — one for any purchase pack. An Electronic Control Unit (ECU) tranquil linear solenoid valve selectively sends vigour to a purchase packs, that in spin control a volume of energy sent to any behind wheel. This new hydraulic complement eliminates a magnets, coils and other components of a prior electromechanical SH-AWD complement to comprehend a estimable weight savings

The purchase packs and their attrition element are delicately designed to withstand a tiny volume of continual trip between front and behind axles combined by a 2.7-percent speed differential — all while delivering a continuance approaching of an Acura product.

1Based on 2014 EPA mileage ratings. Use for comparison functions only. Your mileage will change depending on pushing conditions, how we expostulate and say your vehicle, battery container age/condition, and other factors.
2Customers who select to use Regular gasoline should design reductions in power, opening and fuel economy.
3Does not request to liquid and filter changes or periodic inspections. Please impute to a upkeep territory of your owner’s primer to establish all suitable upkeep intervals.