Sunday, May 6, 2012

Lexus LFA review

Lexus LFA
The new Lexus LFA 2011 marks an important moment in the history and development of the Lexus supercar. A true "clean sheet" design, the Lexus LFA was created by a small team, passionate and dedicated engineers whose achievement has been to expand the boundaries of technology and materials engineering at all stages to produce a car one another led to the Lexus badge.
Constructed with advanced carbon fiber technology, rear-drive Lexus LFA is powered by a custom, high speed naturally aspirated 4.8-liter 552bhp V10 engine, corresponds to a sequential automatic rear-mounted six-speed, 200 mph giving faster performance.
In the words of Chief Engineer Haruhiko Tanahashi: "The Lexus LFA is a thoroughbred supercar, a machine designed to achieve a single objective - to provide a supreme driving experience over the last decade that led to all boundaries in pursuit of this objective and me. We believe we have created more driver-oriented car that could. "
CONSTRUCTION OF CARBON FIBER
Keep the car's weight to an absolute minimum was one of the defining elements in the development of the Lexus LFA, which led to the decision to change the use of aluminum to build the car of advanced fiber reinforced carbon plastic (CFRP)for the chassis and bodywork.
In addition, Lexus decided the CFRP structure should be built at home instead of a third party vendor. In doing so, based on the heritage of Toyota Motor Corporation in the fabric of technology to expand the limits of their technical skills, development of a new carbon fiber looms and a laser system to monitor the integrity of the material.
Least four times the strength of aluminum, CFRP gives the Lexus LFA exceptionally rigid structure and strong, and also gives greater advantages in weight savings of about 100 kg in an equivalent aluminum body. CFRP represents 65 percent of the aluminum alloy body blank, used for the remaining 35 percent.
Unlike the few vehicles on the market that use CFRP construction, the Lexus LFA uses advanced resin technology favored by the same edge aerospace programs for weight and excellent strength properties.
ENGINE
The heart of the Lexus LFA is a custom engine, naturally aspirated V10 sets new standards for compact size, lightweight architecture and brilliant performance.From the beginning, it was determined that the engine must have a capacity of 4805 cc, developing 552bhp and rev to 9000 rpm crying red line. An angle of 72 degrees between the cylinder heads is ideal for achieving balance in the engine for exceptionally smooth, offering individual, electronic throttle control for each cylinder gives excellent throttle response.
Using a dry sump lubrication allows the block to be placed in the bottom of the engine compartment, lower center of gravity of the car and moments of inertia, and allowing the engine to cope with sustained high cornering speeds.
The V10 produces 480 nm of torque at 6800 rpm, 90 percent of what is available from 3,700 rpm up to the 9,000 rpm red line, thanks to Dual VVT-i technology, the equal length exhaust manifolds and bulky, 12-hole fuel injectors. This gives burning acceleration hear any engine speed and in any art: no to 62 mph takes just 3.7 seconds and top speed is 202 mph.
With a gross weight of 1,480 kg, the Lexus LFA has a power to weight ratio of 373bhp per tonne, while the specific production of 115 hp per liter is the largest of any current supercar, with the help of a compression ratio high, 12:1, low internal friction and optimized consumption and exhaust flow.
Despite its power, the V10 is a lesson in packaging and lightweight, with approximately the same size as a regular V8 engine and a weight of a conventional V6. It is also as reliable and refined as any other Lexus power plan and exceeds the Euro 5 emissions standards.
The engine was developed jointly with Yamaha through the partnership between Toyota Motor Corporation and Japanese engineering specialist.
TRANSMISSION
Formidable performance from the V10 is managed through an equally advanced transmission, a purpose for change six-speed sequential automatic (ASG), which drives the rear wheels through a limited slip differential. To help achieve optimal 48:52 weight distribution from front to back, is contained in a transaxle mounted on the rear axle.
ASG is operated blade mounted shift steering column and is designed for exceptionally rapid change: an upshift can be done in just 0.2 seconds.
The system has four driving modes: automatic, sport, normal and wet, caused by a switch on the dashboard. Each mode has a specific program of gears and the motor and the brake logic control systems to allow tailor the performance of the car controller to adapt to the driving conditions.
SOUND
The acoustics of the Lexus LFA, the induction system and exhaust notes have been specially tuned to provide a "soundtrack" awesome car to express extreme performance, both outside and inside the cabin. Known to staff and acoustic "Octave Harmony", is inspired by the sound of an engine speed of Formula 1 more complete and is unlike any other road car, with different harmonic qualities created as the engine moves up to its maximum 9000 rpm.
BRAKING
The Lexus LFA is one of the most advanced and powerful braking systems fitted to any production car, enough to meet the demands of their capacities of 200 mph-plus performance.
The brake discs are made of carbon ceramic material (CCM), in addition to being lighter than steel, cast-free performance under all conditions. The front discs are 390 mm thick and 34 mm diameter, taken by piston calipers aluminum disks as the rear diameter 306 mm, 28 mm thick and are equipped with four clamps spoon. Any use of micron high-friction pads, manufactured exclusively for use with CCM brakes.
Suspension, wheels and tires
The suspension of track set is the result of intensive development work carried out by Lexus at the Nürburgring Nordschleife to give the best possible balance between comfort and control.
The front fork as / multilink rear design makes extensive use of aluminum alloy high strength and low weight, aluminum monotube shocks are the same as those used for car racing Lexus LFA in Nürburgring 24 hour race .
The 20-inch wheels are forged aluminum BBS paved with asymmetric Bridgestone tires: 265/35ZR20 front and 305/20ZR20 in the rear.
AERODYNAMICS
The Lexus LFA has class-leading aerodynamics for transmission cooling and high-speed handling and excellent stability. The wind tunnel tests helped produce an airfoil, with a drag coefficient of 0.31, a remarkable achievement, given the level of the car creates downforce at high speed.
The air flow is accurately controlled over, under and around the car. A carbon fiber rear diffuser and flat bottom generate significant downforce, with an active rear wing with gurney flap on the end, raising the bar even higher.
ADDRESS
The direction of race-tuned offers excellent response and feedback to create a dynamic connection perfect car and driver. The rate constant rack and pinion system uses an innovative energy column auxiliary power steering system that does not weaken the engine performance.
The axis of the large diameter column is mounted directly on the center frame structure, giving exceptional rigidity address scheme. The carbon fiber wheel has a flat lower section houses the engine start button and selector switch media. You can adjust in height and depth.
Exterior design
Dictated by the average balance of available front-engine short wheelbase and long, sophisticated aerodynamics and cockpit floor, the flow lines of the Lexus LFA from the roof to a threshold of perfect line convex to concave. Besides its low weight and high strength carbon fiber reinforced plastic (CFRP) also gave designers greater freedom to create shapes, curves and edges that were not possible with metal.
The style remains true, however, the principles of the L-finesse, the design logic behind all current Lexus models. Form follows function, as shown n the air intakes and aerodynamic many details, and even the design of the exterior mirrors, shaped to channel air over the shoulder of the car in later entries.
INTERIOR DESIGN
The cabin floor divided into three zones: zone mechanics, comprising a skeleton construction of the car, the area of ​​humans, with two seats to the right in the center of the vehicle and the driving surface with high-tech instrumentation offers the driver and machine together.
The cabin is built by hand, with a focus on driver ergonomics. The seats, upholstered in leather and Alcantara, provide the high level of back and side support needed in a car capable of 200 mph-plus performance. The setting echoes the advanced materials used in building the Lexus LFA, with exposed areas of matte and luster of carbon fiber. Finishing Details are finished in polished metal and floor hinged brake and accelerator pedals are made of cast aluminum. As with the exterior finish, owners can choose different interior colors and details to suit your personal taste.
Instrumentation
The compact instrument panel with LCD display combines a hood with a color film transistor TFT (Thin) and a mobile ring motor drive. Screen has a single central circular with a tachometer with an LCD needle. When engine speed exceeds 9,000 rpm, the display area turns red to prepare the driver for an up-shift.It can also be programmed to turn yellow or green as the revs reach a user-selected track. The line also features a digital speedometer and gear indicator, transmission mode, the vehicle control data and displays the information to travel.
A selector switch for information on the left side of the wheel allows the driver to switch through a series of functions, including customizing the display of data, set the lighting of the car and the operation of a track system timer prepared.
When the car starts, a sequence of display device is activated, creating a sense of occasion, culminating in the four digital displays showing the temperature of the oil and water, fuel level and oil pressure, leaving the center of tachometer to take their positions on both sides of the center screen.
SECURITY
Provisions on active and passive safety are in line with the exceptional performance of the Lexus LFA. Carbon fiber reinforced plastic backbone is extremely strong and offers excellent impact protection. Crash boxes are mounted on the front and rear, which are designed to deform in a controlled manner, in the case of an impact. That the front is made of CFRP which the rear of extruded aluminum. Side impact protection comprises fiber carbon strong and rigid side members and door structures comprising an aluminum panel and an interior glass fiber reinforced sheet molding compound (SMC-G) of the outer skin.
The Lexus LFA Lexus is equipped with Vehicle Dynamics Integrated Management (VDIM), which coordinates the operation of ABS, vehicle stability and traction control systems when the vehicle approaches its performance limits, based on the critical data on brake operation, yaw and roll rates, velocity and acceleration of individual wheel longitudinal, transverse and vertical
Passive safety systems include dual front airbags and seat belts adaptive airbags for driver and front passenger and driver's knee airbag.
PRODUCTION AND SALE
Lexus LFA program was launched in 2000 as a single by R & D, but gained momentum with the appointment of Haruhiko Tanahashi to lead a team of dedicated engineers, committed to a program tailored to the Lexus development.The first Lexus LFA prototypewas completed in 2003 and a design studio made its public debut at the Detroit Auto Show 2005. In 2008 and 2009, the Lexus LFA was entered in the Nurburgring 24 hours race, with the intention of pushing the car in difficult conditions of the test before its official launch as a model ready for production in 2009 at the Motor Show Tokyo.
The Lexus LFA is hand-assembled at the Motomachi plant in Toyota City. Only 500 examples will be built at a maximum rate of 20 per month to ensure quality construction and attention to detail. Each V10 engine will be mounted by a single engineer, and his signature as proof of their status as every Lexus LFA.
The launch price in the UK for the Lexus LFA is € 368,000 (approx. £ 336,000).Owners can choose from a wide range of options to customize your car, which includes 30 different paint finishes. Certain items of standard equipment also can be removed, such as the audio system to reduce the weight of the car.

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