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2011 LEXUS LFA
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The new Lexus LFA marks an important moment in both the history of Lexus and the development of the supercar. A true "clean-sheet" design, the Lexus
LFA was created by a small, passionate and dedicated team of engineers
whose achievement has been to push the boundaries of technologies
materials and engineering at every stage to produce a car like no other
to have carried the Lexus badge.
Constructed using advanced carbon fibre technology, the rear-wheel drive Lexus
LFA is powered by a bespoke, high-revving 552bhp 4.8-litre naturally
aspirated V10 engine, matched to a rear-mounted six-speed sequential
automatic transmission, giving 200mph-plus performance.
In the words of Chief Engineer Haruhiko Tanahashi: "The Lexus LFA is a
thoroughbred supercar, a machine engineered to achieve a single goal -
to deliver a supreme driving experience. Over the past decade we have
pushed every boundary in pursuit of this goal and I believe we have
created the most driver-orientated car we possibly could."
CARBON FIBRE CONSTRUCTION
Keeping the car's weight to an absolute minimum was one of the defining elements in the development of the Lexus
LFA and this led to the decision to switch from using aluminium for
the car's construction to advanced Carbon Fibre Reinforced Plastic
(CFRP) for the chassis and bodywork.
Moreover, Lexus decided the CFRP structure should be built in-house
rather than by a third-party supplier. In doing so, it drew on Toyota
Motor Corporation's heritage in textile weaving technology to push the
boundaries of its technical abilities, developing new carbon fibre looms
and a laser system for monitoring the integrity of the material.
At four times the strength of aluminium, CFRP gives the Lexus LFA an
exceptionally stiff and strong structure, and also delivers major weight
advantages, saving around 100kg on an equivalent aluminium body. CFRP
accounts for 65 per cent of the body-in-white, with aluminium alloy
used for the remaining 35 per cent.
Unlike the few other vehicles on the market that use CFRP construction, the Lexus LFA uses the same advanced resin technology favoured by cutting-edge aerospace programmes for its unmatched weight and strength properties.
ENGINE
The heart of the Lexus LFA is a bespoke, naturally aspirated V10 engine
that sets new standards for compact dimensions, lightweight
architecture and scintillating performance. From the outset it was
determined the engine should have a 4,805cc capacity, develop 552bhp
and rev to a wailing 9,000rpm red line. A 72-degree angle between the cylinder
heads is ideal for achieving balance in the engine for exceptionally
smooth running, while providing individual, electronically controlled
throttle bodies for each cylinder gives excellent throttle response.
Using a dry sump lubrication system allows the block to be positioned
deep in the engine bay, lowering the car's centre of gravity and moment
of inertia, and enabling the engine to handle sustained, high-speed
cornering.
The V10 produces 480Nm of torque at 6,800rpm, 90 per cent of which is
available from 3,700rpm all the way to the 9,000rpm red line, thanks to
Dual VVT-i technology, equal length exhaust manifolds
and high-volume, 12-hole fuel injectors. This gives searing in-hear
acceleration at all engine speeds and in any gear: nought to 62mph
takes just 3.7 seconds and maximum speed is 202mph.
With a kerb weight of 1,480kg, the Lexus LFA has a power to weight ratio
of 373bhp per tonne, while specific output of 115bhp per litre is
among the highest of any current supercar, aided by a high, 12:1
compression ratio, low friction internals and optimised intake and
exhaust flow.
In spite of its potency, the V10 is an object lesson in compact and
lightweight packaging, being about the same size as a regular V8 engine
and weighing about as much as conventional V6. It is also as reliable
and refined as any other Lexus power plan and exceeds Euro 5 emissions standards.
The engine was developed in conjunction with Yamaha through the
established collaborative partnership between Toyota Motor Corporation
and the Japanese specialist engineering company.
TRANSMISSION
The formidable performance of the V10 is managed through an equally
advanced transmission, a purpose-designed six-speed Automated Sequential
Gearbox (ASG) that drives the rear wheels via a limited slip
differential. To help achieve the optimum 48:52 front-to-rear weight
distribution, it is contained in a transaxle mounted over the rear axle.
The ASG is operated by paddle shifts mounted on the steering column and
is engineered for exceptionally fast shifts: an upshift can be effected
in just 0.2 seconds.
The system has four driving modes: Auto, Sport, Normal and Wet,
activated by a selector dial on the dashboard. Each mode has a specific
gearshift programme, and engine and brake control logic systems to let
the driver tailor the car's performance to suit driving conditions.
SOUND
The Lexus LFA's acoustics, induction system and exhaust notes have been
specially tuned to deliver an awesome "soundtrack" that expresses the
car's extreme performance, both outside and inside the cabin. Referred
to by the acoustic team as "Octave Harmony", it is inspired by the sound
of a Formula 1 engine at full revs and is unlike that of any other
road car, with different harmonic qualities created as the engine moves
up towards its maximum 9,000rpm.
BRAKING
The Lexus LFA has one of the most advanced and powerful braking systems
fitted to any production car, appropriate to meet the demands of its
200mph-plus performance capabilities.
The brake discs are made of Carbon Ceramic Material (CCM), which as well
as being lighter than steel, gives fade-free performance in all
conditions. The front discs are 390mm in diameter and 34mm thick,
gripped by six-piston aluminium callipers; the rear discs measure 306mm
across, are 28mm thick and are fitted with four-pot callipers. All use
high-friction micron pads, manufactured exclusively for use with CCM
brakes.
SUSPENSION, WHEELS AND TYRES
The track-tuned suspension is the result of intensive development work carried out by Lexus at the Nürburgring's Nordschleife circuit to give the best possible balance between control and comfort.
The bespoke wishbone front/multilink rear design makes extensive use of
aluminium alloy for high strength and low weight, and the aluminium
monotube dampers are the same as those Lexus used for its LFA race car in the Nurburgring 24-hour race.
The 20-inch forged aluminium BBS wheels are shod with asymmetric
Bridgestone tyres: 265/35ZR20 at the front and 305/20ZR20 at the rear.
AERODYNAMICS
The Lexus LFA boasts class-leading aerodynamics to achieve drivetrain
cooling and superb high-speed handling and stability. Extensive wind
tunnel testing helped produce a wind-cheating profile with a drag
coefficient of 0.31, a remarkable achievement given the degree of
downforce the car creates at high speed.
Airflow is precisely controlled over, under and around the car. A carbon
fibre rear diffuser and flat underbody generate significant downforce,
with an active rear wing, complete with a gurney flap on the leading
edge, boosting the level further still.
STEERING
The race-tuned steering gives outstanding response and feedback to
create a perfect dynamic link between car and driver. The constant-rate
rack and pinion system uses an innovative column-assist Electric Power
Steering System that does not sap engine performance.
The large-diameter column shaft is mounted directly on the central
chassis structure, giving the steering layout exceptional rigidity. The
carbon fibre steering wheel has a flat bottom section and houses the
engine starter button and instrument information selector switch. It can
be adjusted for reach and rake.
EXTERIOR DESIGN
Dictated by its front-mid engine layout, long wheelbase and short
overhangs, sophisticated aerodynamics and low-slung cabin, the Lexus
LFA's lines flow from roof to sill in a seamless convex to concave line.
As well as its low weight and high strength, carbon fibre reinforced
plastic (CFRP) also gave the designers more freedom to create shapes,
curves and edges that would have been impossible with metal.
The styling remains true, however, to the principles of L-finesse, the
design rationale behind all current Lexus models. Form follows function,
as witnessed n the numerous air intakes and aerodynamic details, and
even in the design of the door mirrors, shaped to channel air over the
car's shoulders into the rear intakes.
INTERIOR DESIGN
The low-slung cabin is divided into three zones: the mechanical zone,
which includes the skeleton of the car's construction; the human zone,
with two seats placed right at the centre of the car; and the driving
zone, with high-tech instrumentation that brings driver and machine
together.
The cabin is hand-built, with driver-focused ergonomics. The seats,
upholstered in fine leather and Alcantara, provide the high level of
back and side support needed in a car capable of 200mph-plus
performance. The trim echoes the advanced materials used in the Lexus
LFA's construction, with exposed areas of both matt and gloss carbon
fibre. Trim details are finished in brushed metal and the floor-hinged
brake and throttle pedals are made of forged aluminium. As with the
exterior finish, owners can choose different interior colours and
details to suit personal taste.
INSTRUMENTATION
The compact, hooded instrument panel combines an LCD display panel with a
colour Thin Film Transistor (TFT) and a motor-drive movable ring. It
features a single circular dial with a central tachometer with an LCD
needle. When engine speed exceeds 9,000rpm, the display area turns red
to prime the driver for an up-shift. It can also be programmed to turn
yellow or green when the revs reach a user-selected range. The dial also
houses a digital speedometer and gear indicator, transmission mode,
vehicle control data and trip information displays.
An information selector switch on the left side of the steering wheel
lets the driver toggle through a series of functions, including
customising the data display, adjusting cabin illumination and operating
a track-ready stopwatch system.
When the car is started, an instrument display sequence is triggered,
creating a sense of occasion, culminating in the four digital dials
showing oil and water temperatures, fuel level and oil pressure
radiating out from the centre of the rev counter to take up their
positions on either side of the central dial.
SAFETY
Passive and active safety provisions are in line with the Lexus LFA's
exceptional performance. The central carbon fibre reinforced plastic
central structure is extremely strong and provides excellent impact
protection. Crash boxes are fitted front and rear that are designed to
deform in a controlled fashion in the event of an impact. That at the
front is made of CFRP; that at the rear from extruded aluminium. Side
impact protection includes strong and rigid carbon fibre side members
and door structures comprising an aluminium inner panel and a Glass
fibre reinforced Sheet Moulding Compound (G-SMC) outer skin.
The Lexus LFA is equipped with Lexus's Vehicle Dynamic Integrated
Management (VDIM) system, which co-ordinates the smooth operation of the
ABS, vehicle stability and traction control systems as the vehicle
approaches its performance limits, based on critical data on brake
operation, yaw and roll rates, individual wheel speed and longitudinal,
lateral and vertical acceleration
Passive safety features include two-stage adaptive front airbags and
seatbelt airbags for driver and passenger and a driver's knee airbag.
MANUFACTURING AND SALES
The Lexus LFA programme was launched in 2000 as a straightforward
R&D project, but gained impetus with the appointment of Haruhiko
Tanahashi to lead a dedicated team of engineers, committed to a bespoke
Lexus development programme. The first Lexus LFA prototype was
completed in 2003 and a design study made its public debut at the 2005
Detroit motor show. In 2008 and 2009 the Lexus LFA was entered in the
Nurburgring 24-hour race, the intention being to push the car hard under
testing conditions prior to its official launch as a production-ready
model at the 2009 Tokyo motor show.
The Lexus LFA will be 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 the finest build quality and attention to detail. Each V10
engine will be assembled by a single engineer, and will bear his
signature as testament to each Lexus LFA's bespoke status.
The UK launch price for the Lexus LFA is €368,000 (approximately
£336,000). Owners can choose from an extensive range of options to
personalise their car, including 30 different paint finishes. Certain
items of standard equipment can also be removed, such as the audio
system, to reduce the car's weight.
TECHNICAL SPECIFICATIONS
* ENGINE
o Engine Type: 1LR-GSE
o Cylinders/arrangement: V10
o Valve mechanism: 40-valve DOHC
o Displacement: 4,805 cc
o Bore x Stroke: 88.0 x 79.0 mm
o Compression ratio: 12.0:1
o Fuel Injection Type: EFI
o Octane Rating : 95 or higher
o Max. Power: 552 bhp @ 8,700 rpm
o Max Torque: 480 Nm @ 6,800 rpm
o Max. engine speed: 9,000 rpm
o Exhaust emissions certification: Euro 5
* PERFORMANCE
o 0-62 mph (0-100 km/h): 3.7 s
o Max. speed: 202 mph (325 km/h)
* DIMENSIONS
o Overall length: 4,505 mm
o Overall width: 1,895 mm
o Overall height: 1,220 mm
o Wheelbase: 2,605 mm
o Track
+ front: 1,580 mm
+ rear: 1,570 mm
o Overhang
+ front: 940 mm
+ rear: 960 mm
o Coefficient of Drag: 0.31 Cd
o Fuel tank capacity: 73 l (16.1 gallons)
* WEIGHTS (kg)
o Kerb weight: 1,480 - 1,580 kg
o Gross vehicle weight: 1,700/1,750 kg
* TRANSMISSION
o Gearbox type: 6-speed Automated Sequential Gearbox
o Front counter gear ratio: 1.259
o Gear ratios
+ 1st: 3.231
+ 2nd: 2.188
+ 3rd: 1.609
+ 4th: 1.233
+ 5th: 0.970
+ 6th: 0.795
o Final drive ratio: 3.417
o Maximum permissible speed
+ 1st: 52 mph
+ 2nd: 76 mph
+ 3rd: 104 mph
+ 4th: 136 mph
+ 5th: 172 mph
+ 6th: -
* BRAKES
o Front: Cross-drilled ventilated discs, 399 x 34 mm
o Rear: Cross-drilled ventilated discs, 360 x 28 mm
* SUSPENSION
* Front: Double wishbone with anti-roll bar
* Rear: Multilink with anti-roll bar
* STEERING
* Steering gear type: Rack and pinion
* Power steering type: Electric
* Ratio: 14.3
* Turns lock to lock: 2.35
* ELECTRICAL SYSTEM
* Battery capacity: 12V-48AH
* Alternator output: 2,640 W
* Starter output: 1.7 kW
* TYRES AND WHEELS
* Wheels
* Front: 20x9.5J BBS alloy
* Rear: 20x11.5J BBS alloy
* Tyres
* Front: 265/35R20 95Y
* Rear: 305/30R20 99Y
Auto Accident Lawyers Information
Steinger, Iscoe & Greene Injury Lawyers
Florida Injury Lawyers
www.injurylawyers.com
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Japanese car photos, LEXUS pictures, wallpapers