11/28/10

2011 Lexus IS F

Cars Mania Blog
Auto Car | 2011 Lexus IS F | As the first production model to wear the brand’s “F” marquee, the Lexus IS F offers a thrilling, fun-to-drive experience.  The Lexus IS F high-performance sport sedan races into 2011 with several interior updates including LED daytime running lamps, an improved suspension, and a new brake override system.
 
To improve responsiveness and ride comfort, in addition to providing the driver with more control, engineers revised the Electric Power Steering (EPS) system and suspension.  With revised front and rear spring rates, shock absorber dampening, rear bushings and rear camber angle, the IS F provides a confident ride.

The sporty interior is complemented with new IP gauges, a silver colored-trimmed steering wheel, and dark finish aluminum composite ornamentation.  The Sport mode switch has also been moved to the steering wheel for easier access. 
 
In addition, vehicles with a Black interior receive Alcantara® seat inserts with leather bolsters that enhance its exhilarating sportiness.  An all-new Orange and Black leather interior with contrast stitching flaunts the IS F’s vivacious attitude and replaces the Terra Cotta interior.

The Lexus IS F is exclusively powered by a performance-tuned 5.0-liter V8 engine teamed to an eight-speed Sport Direct Shift transmission.  The IS F engine produces 416 horsepower at 6,600 rpm and 371 lb.-ft. of peak torque at 5,200 rpm.  The engine’s high specific output (83.2 hp/liter) and high operating range (6,800 rpm redline) reflect the thorough attention to detail underlying the core engineering.  The resulting performance character, while quite responsive in low-speed situations, provides a rush of power at higher engine speeds.
 
The forged crankshaft features journals polished to a mirror finish to minimize the friction generated between the connecting rods and the crankshaft.  Forged sintered iron alloy connecting rods ensure high-rpm durability.  High-flow cylinder heads designed by Yamaha have a lightweight valvetrain, including forged cam lobes on hollow, chain-driven camshafts, with the inside of the shafts serving as oil passages.  Titanium intake valves are operated by roller rocker arms.
 
Innovative technologies help to maximize efficiency and reduce emissions, including the SFI D-4 fuel injection (direct-to-cylinder injection system with secondary port injectors) and the Electronic Throttle Control System with intelligence (ETCS-i).  Essentially, SFI D-4 integrates two types of fuel injection:  A direct-type high-pressure fuel injection system, which provides a cooling effect in the cylinders and enables the high compression ratio (11.8:1) employed to extract maximum energy from the fuel; a set of low-pressure port fuel injectors that help produce a precise burn to optimize power and efficiency under light- and medium-load conditions.
 
A dual air-intake system uses a primary intake passage for low and medium engine speeds. In the higher engine speed range (above 3,600 rpm), both the primary and secondary passages are opened, helping boost high-rpm power.

With the IS F 5.0-liter V8, Lexus made a leap in valve-control technology with the Variable Valve Timing with intelligence by an electric motor (VVT-iE).  An electric drive motor alters the intake camshaft phasing, which made it possible to expand VVT operational range to lower engine speeds, where engine oil pressure is usually not high enough to operate conventional VVT.  The exhaust camshaft uses hydraulically controlled variable valve timing.
 
A scavenge pump forces oil from the cylinder heads back to the oil pan, ensuring a reliable oil supply even during cornering that exceeds one g.  The low-restriction dual-exhaust system terminates in distinctive stacked quad diffusers.

The world’s first eight-speed Sport Direct-Shift automatic transmission combines the performance characteristics of an automated manual-type transmission with the smoothness and refinement of a planetary-type automatic transmission.  As a result, the driver can choose between ultra-quick manual shifts for performance driving and smooth automatic shifts when convenience is the top priority.
 
Eight speeds allow gear ratios that maximize torque up to the tire-grip limitations in the lower ranges while optimizing efficiency.  Intuitive powertrain control optimally smoothes out off-the-line response. The driver can select Normal, Sport or Snow driving modes with the flip of a switch.  Artificial Intelligence-SHIFT (AI-SHIFT) complements the driver’s Sport switch selection by automatically adapting the shifting based on road conditions and driver input.  The IS F transmission is also highly responsive to uphill/downhill driving, always selecting the best gear for power or engine braking.
 
The driver can shift manually using either the console shift or steering-wheel-mounted paddle shifters.  Hydraulic-control technology allows the IS F’s eight-speed Sport Direct Shift transmission to perform on par with manual transmissions without sacrificing the smoothness of a torque-converter automatic.  Paddle-shifting operation is allowed in either D or M modes, but shifts are quicker and more direct in M mode. In M mode, the transmission will hold each gear to the 6,800-rpm redline, and upshifts are executed in just one-tenth of a second.  At higher engine speeds, downshifts are accompanied by automated and precise throttle blips to match engine rpm to vehicle speed.

The IS F features 19-inch forged-alloy wheels by BBS® with a distinct dark-gray finish and an asymmetrical 10-spoke design. The front wheels are 19 x 8J, with 225/40R19 tires and 19 x 9J in the rear, with 255/35R19 tires.  Michelin Pilot Sport PS2 and Bridgestone Potenza tires were each developed specifically for the 170-mph track capability of the Lexus IS F. High-rigidity hub unit bearings are engineered for rigorous, high g-force track driving.  The direct-type tire pressure monitor system allows two sets of tires to be registered, giving the customer the benefit of a system with a set of track tires or winter tires.  The multi-information display indicates the tire selector switch.

A specially calibrated version of Lexus’ innovative Vehicle Dynamics Integrated Management (VDIM) system helps provide superior handling dynamics and traction control.  Combining input from a variety of sensors, VDIM is designed to anticipate the onset of a vehicle skid or slide and help correct the situation with a combination of braking, steering and throttle control in a way that is essentially transparent to the driver.  VDIM integration provides precise management for EPS, Vehicle Stability Control (VSC), traction control (TRAC), the Anti-lock Braking System (ABS), Brake Assist (BA), Electronic Brake force Distribution (EBD), and engine torque (via the electronically controlled throttle).

The available Pre-Collision System (PCS) can help reduce collision damage.  The package includes Dynamic Radar Cruise Control, which uses millimeter-wave radar to measure and maintain a pre-set distance from a vehicle traveling ahead.  PCS relies on the radar sensor to detect obstacles in front of the car.  The PCS computer, taking sensor inputs from vehicle speed, steering angle and yaw rate, is designed to determine whether a collision is unavoidable.  In such a situation, PCS preemptively retracts front seat belts and pre-initializes BA so that increased braking will be applied the instant the driver depresses the pedal.

The rear back-up camera, included with the available navigation system, automatically projects an image of what its lens can detect behind the car onto the navigation screen when the transmission is in reverse.

The air conditioning system’s electrically controlled variable compressor adjusts output to demand rather than simply cycling on and off.  The system can independently adjust upper and lower temperatures in response to ambient conditions or sunlight.  UV-reducing, heat-absorbing glass is used throughout the car.

The standard Lexus Premium Audio System features a six-disc, in-dash CD changer, 13 speakers, USB/iPod® connectivity, streaming audio via Bluetooth® and an integrated XM Radio receiver (includes complimentary 90-day trial subscription).  Automatic Sound Levelizer (ASL) maintains consistent sound levels in response to varying extraneous noise levels.  When connected to the USB port, the iPod can be controlled through the audio system or steering wheel controls, while information such as names for the artist, track and album is displayed on the headunit or navigation screen.

Like all Lexus models, the IS F offers a Mark Levinson® Premium Surround Sound Audio System.  This 14-speaker audio system features discrete 5.1 multi-channel playback with 7.1-channel speaker architecture.  Its 10 amplifier channels provide 300 watts total output at less than 0.1 percent total harmonic distortion from 20 to 20,000 Hz (THD all channels driven).  The Mark Levinson system plays conventional CDs and DVDs, plus MP3/WMA-formatted CDs.  DVD movies can be viewed on the available navigation system’s color seven-inch touch screen when the parking brake is engaged.

The available Intuitive Park Assist (IPA) system uses ultrasonic sensors to detect objects close to the car’s front and rear bumpers, alerting the driver and showing distance to objects in the multi-information display within the speedometer.  When the IS F is equipped with the navigation system, information on detected objects is shown in greater detail on the seven-inch touch screen display.

Source : lexusenthusiast.com

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1 comment:

  1. Really good.
    It's looking one of the awesome model car. This car is really handsome looking. But what is the new model cars of Lexus model to be coming in the coming days?

    ReplyDelete