In celebration of the LFA is the third winner out of class at the Nurburgring 24 hour race in 2010 created the Lexus Lexus LFA Nurburgring Package for customers who prefer their cars to be a little more focus on monitoring.
Limited to only 50 units in total vehicle output cycle, from the Nurburgring package is scheduled for the second year of production in 2012 Lexus LFA.
To improve the monitoring of lead even further, aerodynamic performance of the LFA with the Nurburgring package have been changed by revision and addition of carbon fiber reinforced plastic a few keys. Combine to provide a better downforce at high speeds, these changes include further spoiler, side spoiler wing, aileron duck, and fixed rear wing.
Stimulated 420kW/571 bhp maximum power. This ensures that the LFA maintains acceleration time from 0-100 km / h in just 3.7 seconds and 325 km / h maximum speed, although the additional drag created by the increased support. The time shift of 0.15 seconds.
In terms of management changes, Lexus LFA Nurburgring package includes sport tuned suspension, reduction in vehicle height of 10 mm mesh-type wheels and high-traction tires exclusively dedicated.
Customer LFA Nurburgring determine individual training package will be offered by one of the Nordschleife Nurburgring chief instructor, and will also receive a packet from one year to driving the Nordschleife.
Carbon fiber reinforced plastic constructionAccording to Haruhiko Tanahashi, chief engineer of the LFA development program, one of the main elements of the definition of LFA is the need to maintain the total weight of the car to an absolute minimum. This resulted in a dramatic decision for the life of the development of LFA to switch from aluminum to carbon fiber construction reinforced sophisticated chassis and plastic body.
This decision was made more difficult by the decision Tanahashi-san to develop sophisticated LFA CFRP structure at home, instead of using third-party vendors. Evaluation of braking on the ground - one of which falls directly in line with the philosophy behind the LFA to handle new equipment and cutting-edge production process - taken with an eye on the past and future.
The legacy of Toyota Motor Corporation as one of the world's most advanced textile weaving creates a vital resource of history that the team Tanahashi-san CFRP structures based on the development of the LFA. Historically, the revolutionary development of an automatic machine for weaving by Toyota Motor Corporation, not only makes a significant contribution to the economy of Japan in producing high-quality fabrics at a lower cost, but also makes an important contribution to society as a whole.
Similarly, the radical switch to production for the development of LFA CFRP pushing technical boundaries that engineers moved to Toyota Motor Corporation of traditional fiber weaving crafts advanced three-dimensional carbon. And benefits of technological advances, the use of lightweight materials CFRP heavy metals also reduce the impact of LFA on the environment.
A striking example of the advantages Tanahashi-san and his team extracted from the weaving heritage of Toyota Motor Corporation has been developing enterprise broken wire detection technology is integrated into the original fabric weaving. Updated wire sensor mechanics with laser technology for amazing accuracy to monitor the integrity of the network not only provides insight into important team in the process of weaving, but also saves development time critical.
At four times the strength of aluminum, not just the middle to create the CFRP structure is very rigid and strong, will also achieve significant weight savings, reduced body weight of 100 kg at an estimated equivalent aluminum body. Working with CFRP will also significantly reduce the manufacturing time for long-LFA componentry. The decision to develop its own technology CFRP material will also ensure the quality of the carbon fiber used Lexus that meets certain standards.
Unlike some vehicles that have the performance of carbon fiber construction, resin technology used in advanced chassis LFA are the same used in the space program's most powerful at this time, promoted weight and quality unmatched strength. This extensive use of CFRP accounts for 65% of LFA BIW weight, with an aluminum alloy consisting of 35% is left. Lightweight CFRP has even been used to support the cover spacer, replace, traditional and heavy hydraulic hood struts.
Three different methods of molding carbon fiber used in the structure, used in accordance with the dynamics of forming the structure of their burden, and location. The prepreg is expensive and the process of laying the hands of workers, in which carbon fiber sheets impregnated with a liquid thermosetting resin is molded, pressed and heated in an oven, mainly used for the cabin to create a structure very rigid and stable.
CFRP panel of the land and build a transmission tunnel, the roof and hood is manufactured using resin transfer molding (RTM), in which the liquid resin impregnated into the carbon fiber preformed before the heated dry and harden. C-SMC and carbon fiber reinforced sheet molding compound process, where materials are hot pressed short fibers in the matrix, is used to make the C-pillars and supports and the rear floor.
And in a move that highlights the origins of the Toyota Motor Corporation as one of the world's most advanced textile weaving - the history of vital resources that the team Tanahashi-san is based on the development of LFA CFRP structures - under the hood and trunk lid either left unpainted to leave CFRP naked on screen.
As a pioneer in the use of CFRP in the Lexus LFA team also focused on how best to achieve carbon fiber and metal components - traditionally a complicated process. Most of the assembly process using a threaded aluminum insert that is wrapped in CFRP, but the team decided against LFA method. He has developed an innovative system that is very different from traditional methods. Does not require a threaded aluminum inserts or direct contact with CFRP, it uses an aluminum flange collar to connect the two materials and to overcome the weaknesses inherent in these joints.
Although this section to CFRP constructions delayed debut on the market for LFA exactly the type of assessment embodied in the LFA team spirit: to push new boundaries in the pursuit of excellence. The result is that in a short time of three years, engineers have not only mastered the production of carbon fiber for the LFA, but also developed a new method to create a revolutionary new LFA stronger, stiffer and lighter that any alternative to the base metal will never be.
Building a legacy looms Toyota Motor Corporation and makes the experience to develop CFRP also has created a deep and rich pool of engineering talent, internal technology resources has accelerated the development of LFA. Utilizing automated production system developed in-house, this world-class quality carbon fiber production process is now underway for future production, and will be invaluable when it comes to working on future projects Lexus.
ENGINEAt the heart of the LFA is a V10 engine that sets new standards as a vehicle for its compact size, lightweight and scintillating performance architecture. From the beginning, Tanahashi-san and engineers determined the LFA before a mid-mounted engine will have a capacity of 4805cc, will develop 412kW/560 bhp (Lexus LFA Nurburgring package: 420kW/571 DIN hp) and rev 9000 rpm Redline groaned. It will have a range of 72 ° angle between the cylinder head - the perfect angle for both primary and secondary balance in the V10 engine for a very smooth operating characteristics. It will naturally be attracted to a linear power delivery and throttle response is predicted with an extraordinary person, electronically controlled throttle body for each cylinder.
This will be a characteristic of the dry sump lubrication system, which not only blocks away position within the engine compartment to lower the center of gravity and lower the car when the inertia, but also allows the engine to handle sustained, high-speed cornering. And it will offer exceptional mid-range and the response of high-end performance is strong.
V10 engine produces 480nm of torque at 7000 rpm. Application of intelligent VVT-i variable valve timing on the intake and exhaust valves are combined with equal length exhaust manifolds and high-volume fuel injectors 12-hole resulting in 90% of this beautiful pair available between 3700 rpm and 9000 rpm red line, to include acceleration uniform at each engine speed and any equipment. The result is a time of 0-100km / h in 3.7 seconds and a top speed of 325 km / h - exhilarating performance of the bone faith supercar.
With a curb weight under 1480 kg - achieved by using extensive lightweight carbon fiber reinforced plastics (CFRP) for the chassis and body - and the explosive 412kW/560 bhp (Lexus LFA Nurburgring package: 420kW/571 DIN hp), LFA supercar steps to in the ring with pulsed power on the weight 278kW/378DIN HP (Lexus LFA Nurburgring package: 284kW/386DIN HP) per ton. The combination of high compression ratio of 12:1, the internal friction and low intake of optimized and the results of the exhaust stream of LFA powertrain develops extraordinary 85.7kW/117DIN HP (Lexus LFA Nurburgring Package: 87.5kW/119DIN hp) per liter, one of which highest among the specific results of the current crop of supercars.
In addition to low weight basically curb the key to achieving this goal has been remarkable and innovative use of exotic materials like titanium and magnesium, undivided attention to the low inertia and, if possible, the operation of advanced technology motor sport.
Of course, the valve train has been investigated, and, therefore, the cylinder head has the elements most likely to be found on racing cars from the road between two places off. Titanium valves and connecting rods - 40% lighter than equivalent steel components properly - which is equipped with ultra-lightweight solid rocker with Diamond-Like Carbon coating with silicone and oil jets built.
Further highlights include the song-inspired forged aluminum pistons, low inertia of the spring valve in the cylinder, which lighten the crank shaft is integrated with the cylinder twin valleys are designed to reduce pumping losses and Magnesium alloy cylinder head cover. A dual air system intake also improves engine performance, the transition from the primary inlet at low engine speeds through two ports with high speed to improve the efficiency of breathing.
Based on the experience of motor sport (LFA participated in the grueling 24 Hours Nurburgring in Germany in 2008, 2009, 2010 and 2011) LFA team also designed the engine with dry sump system followed oriented, which allows it to withstand cornering forces sustained more than 2G - a fundamental requirement of track high-speed performance.
Each cylinder has a throttle, independent electronically controlled to ensure the engine intake air to take the shortest and most effective route. It has logical priority control features: an innovative system that estimates the volume of air intake based on the gas pedal angle, which allows to calculate the precise fuel injection volume is much faster than other conventional systems. The result is a machine that meets at an incredible rate even for smaller input and most delicate of forged aluminum floor mounted gas.
The success of this program is that the low friction rotation of the engine can idle 9000 rpm red line in just six tenths of a second - flexibility without inertia derived exclusively from the engineering skills of the race for the office team. This has necessitated the need for a digital rev counter as an analog system can not compensate for a remarkable machine with the ability to win and defeat the revolution. To further reduce the size of the engine, oil cooler valley between the cylinder head and welcomed the positive crankcase ventilation (PCV) room. Equipped with the parts that lead to different areas of the crankcase, the PCV ensure continuous and effective evacuation of the gas inside the housing.
The result is a machine like no other, instantly defining characteristics of size and weight of ultra-high performance engines. While peak V10 LFA is as small as a traditional V8 engine, and as light as a standard V6 engine, it offers genuine supercar performance. At 9000 rpm the piston which moves about 25 meters per second, making it one of the engine revving and most powerful ever released in automobile production. Despite the great performance, exotic materials used in construction and a very high tolerance level, the power train LFA meet the same standards of reliability and sophistication of other Lexus engines.
It also exceeds the stringent Euro V emissions regulations, assisted by the air injection system that uses air pumps to push fresh air into the exhaust after a cold start the engine, catalytic converter activation earlier than usual to ensure the exhaust kept clean at all times.
Revolutionary machine was developed in collaboration with the Yamaha, the results of the structure of collaboration between Toyota Motor Corporation and Japanese engineering specialists. This development was aided by Yamaha is controlled and operated by Toyota at each step is important to meet strict standards.
GEARBOX
Performance V10 is managed by the transmission of the same blast forward. The size of LFA new six-speed sequential automatic (ASG) moving the rear wheels via a slip differential, torque-sensing limited, and is mounted in a transaxle layout on the rear axle to achieve optimal weight distribution 48: 52.
While many believe that the 50/50 weight distribution is most desirable for a high-performance sports car, perfect weight for any vehicle is one that will allow him to live up to its full potential dynamic. In this spirit, the construction engineer of the LFA for 48:52 weight distribution, balance that combines the handling and stability in a straight line with a plan with a rear-drive front engine platform agility and dynamic handling of a mid-engine rear-wheel turn.
Impeller is operated by a lever mounted on the steering column, transmission ASG works hand in hand with the machine for the driver in full control, even under the most extreme driving. Equipped with micro-polished gears for precise gear change speed and reduced whine, intelligent transmission is designed to run speed changes very quickly, and can upshift only in 0.15 seconds.
In addition to enhancing traction limited slip differential, transmission ASG also has four driving modes - Auto, Sport, Normal and WET - driven by the mode switch on the dashboard. With certain programming speed, each mode has its own engine and brake control system logic, allowing the driver to choose the most suitable mode for the sub-condition tires.
Plan for change can be adjusted in seven steps - about 0.15 seconds to 1.0 seconds of intense track work to sail smoothly - with Speed Shift dial, logically located just below the Mode button. In AUTO mode, the speed is fixed at the stage of the second speed gear change is smooth and comfortable.
The pilot focused on LFA strong emphasis is perfectly summed up by the pallet operation. Apart from mounted on the steering column rather than the wheel itself, so the driver does not need to hunt for them in the corners, the force required to operate the upshift paddle on the right and downshift paddle on the left is different. While the shift requires a single-shot finger, downshift paddle requires more effort to improve the mechanical connection between the driver and transmission.
Gear box hydraulic unit powered by an brushless electric motor and is designed to provide high volume and pressure needed to operate the ASG transmission and clutch slave cylinder concentric. Other highlights include a cone synchronization techniques tripled in the first four records and a double cone synchronization on the fifth and sixth gears, the clutch of small diameter with high-friction material progress, lightweight aluminum clutch covers a special oil cooler is integrated into the canning bridge, allowing the driver to fully exploit the car's performance on the track with confidence.
Properties very fast revving V10 engine from a single LFA needed light and responsive clutch, a move that effectively excluded dual clutch transmission-. The engineers also felt a positive change in the transmission quality of the ASG and direct - as opposed to finesse almost artificially during the dual-clutch transmission - greatly enhance the driving experience, which makes the driver aware of machine parts to work together in harmony when changing speed mechanics commitment to a sense of satisfaction.
Engine and transmission are connected by a torque tube that connects the link and flex-rigid powertrain between the engine and transaxle free - an important element in the development of ultra-rigid chassis LFA. Equipped with rubber insulators, this allows the engine mount tube - two on each side of the block are further apart, to minimize movement of the drive train.
Both support the bridge support is as close to the center of gravity as possible, and in addition to the relationship between the differential case and transmission to reduce unwanted vibrations. These motor mounts and transmission have been developed and refined based on feedback gathered from the LFA, after she participated in the grueling 24 Hours Nürburgring in 2008, 2009, 2010 and 2011.
Together, especially sophisticated engine and transmission to determine the uniqueness of LFA. This is the faith of bone supercar to the track as much as the street, the one with the ability to deliver strong performance adrenaline.
Available in matte black, black, white or orange, with outer LFA Nurburgring package comes with a choice of three interior color schemes, black and red, black and purple, and all black people. All have a central console and door trim carbon fiber, while the bucket seats in carbon fiber is cut in Alcantara.
