Changing the previous 3.5L V-6, the new 3.7L delivers extra energy, increased torque, extra refined valvetrain, and an overall bundle that is lighter than the V-6 it replaces. The crankshaft of the RL is positioned transversely (side to side) somewhat than longitudinally (entrance to rear) which permits the RL engine to be packaged more tightly for higher dealing with agility, with out sacrificing interior comfort. Rated at 300 horsepower, the brand new excessive-output 3.7L V-6 is as highly effective as some V-eight engines, but the V-6 is extra lightweight for higher acceleration and more nimble handling. In comparison with the outdated 3.5L V-6, the new 3.7L presents 9-p.c more torque between idle and 3,000 rpm- the rpm vary most people function the engine during regular each day driving. The 3.7L V-6 will get a brand new engine bay cover assembly that simplifies the underneath hood appearance in addition to focuses extra attention on the brand new engine. The 3.7L V-6 is teamed with a brand new Sequential SportShift 5-speed automated transmission with revised shift parameters, a more strong torque converter, and Florida Honda two new types of transmission gear activation. The earlier RL's multi-gated shifter has been changed with a brand new straight-gate model console-mounted shifter. Or, for more spirited driving, a new "smart" F1-fashion steering wheel paddle shifter system is commonplace that now works when the transmission is in Drive (formerly the paddles solely operated when in Guide mode). Grade Logic Control is paired with revised transmission shift programming to deliver improved efficiency and a crisper driving feel. To deliver distinctive dealing with efficiency and to maximise all-season traction, the 2009 RL comes commonplace with revised Tremendous Dealing with All-Wheel Drive™ (SH-AWD™) that includes new control parameters that deliver quicker, extra precise all-wheel-drive response. SH-AWD™ is the first all-wheel drive system on the earth to distribute the optimum Used Cars quantity of torque not only between the entrance and rear wheels, but in addition between the left and right rear wheels. The system's torque vectoring direct yaw management feature makes the cornering character of the RL exceptionally impartial when below power. The result is a safer, extra predictable, more enjoyable driving experience. POWERTRAIN AT A GLANCE Engine 3.7-liter, SOHC, V-6 engine produces 300 horsepower at 6,300 rpm and 271 lb-ft of torque at 5,000 rpm VTEC® (Variable Valve Timing and Raise Digital Management) for intake and exhaust valves (a primary ever software for a SOHC engine) 11.2:1 compression ratio Two-piece, dual-stage magnesium consumption manifold Drive-by-Wire™ Throttle System Laptop-managed Programmed Fuel Injection (PGM-FI) with multi-hole fuel injectors Direct ignition system Detonation/knock management system Variable circulation exhaust system Upkeep Minder™ system optimizes service intervals one hundred,000 miles tune-up interval Emissions/Fuel Economy High-movement, New Honda's close-coupled catalytic converters plus underneath flooring catalytic converter High capability 32-bit RISC processor emissions management unit Meets EPA TIER 2 – BIN 5 and CARB ULEV-2 emissions standards EPA estimated 16/22/19 mpg (metropolis/highway/mixed) Noise, Vibration & Harshness (NVH) 60-diploma cylinder V-angle for clean operation Routinely tensioned, maintenance-free serpentine belt accessory drive Sequential SportShift 5-pace computerized with paddle shifters and Grade Logic Management Quick-response Sequential SportShift allows semi-guide operation New straight-gate style console-mounted shifter Steering-wheel mounted F1®-fashion paddle shifters (now applicable in Drive and Handbook modes) Coordination between Drive-by-Wire™ Throttle System and transmission makes for faster, smoother shifts Large gear ratio spacing for good gas financial system Advanced shift-maintain Auto Specials management limits upshifts throughout spirited driving Grade Logic Control System reduces gear "searching" on steep hills Tremendous Handling All-Wheel Drive™ (SH-AWD™) Fully computerized, full-time traction and dealing with system Distributes torque between the entrance and rear wheels and between the left and proper rear wheels to supply torque vectoring to directly control the yaw second of the automobile Outer rear wheel is capable of being overdriven as much as 5.7-% during cornering Understeer is drastically diminished during onerous cornering ENGINE ARCHITECTURE The new 3.7-liter VTEC® V-6 is the biggest and most powerful engine ever fitted to an Acura sedan and it incorporates lots of the refinements and improvements Schedule Service which have been developed for other Acura powerplants. The new RL engine has a clean-firing 60-degree V-angle, compact total dimensions, and weighs 17.2 kilos less than the smaller displacement 3.5L engine it replaces. Aluminum alloy cylinder block construction (including distinctive aluminum cylinder sleeves) saves weight and improves cooling, whereas the primary ever SOHC use of VTEC® for both consumption and exhaust valves helps push energy to an all-time high. A special high-circulation intake system, Order Parts larger compression ratio, and a new design of close-coupled catalytic converters matched with high flow exhaust make the 3.7L engine the most powerful naturally aspirated 6-cylinder engine in its class. ENGINE BLOCK The RL's lightweight, warmth-handled die-solid aluminum-alloy cylinder block has cast-in-place aluminum cylinder liners. These high-silicon sleeves dissipate warmth higher than iron liners. The silicon aluminum sleeves also permit Auto Finance a closer piston-to-cylinder clearance for better oil management, improved emissions, and fewer working noise. A new mechanical etching process throughout manufacturing exposes silicone particles embedded within the aluminum sleeves, which provide a hard piston-ring sealing surface. The block additionally incorporates a deep-skirt design for inflexible crankshaft support and minimized noise and vibration.
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Replacing the earlier 3.5L V-6, the new 3.7L delivers extra power, increased torque, more refined valvetrain, and an general package deal that is lighter than the V-6 it replaces.
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