Showing posts with label Lexus. Show all posts
Showing posts with label Lexus. Show all posts

Saturday, February 6, 2010

Lexus LS 600h L

Lexus LS 600h L



The Lexus LS 600h L luxury sedan was the first vehicle to bring fuel-efficient gasoline-electric hybrid technology to the prestige luxury segment.
The Lexus LS 600h L provides the brand's highest level of performance and technology, and the truest expression of luxury.

The Engine/Transmission/Drivetrain/Performance

The Lexus LS 600h L is powered by the ultra-quiet Lexus Hybrid Drive system, which was the world's first to combine a V8 gasoline engine with an all-wheel-drive (AWD) hybrid drivetrain. The system combines a 5.0-liter V8 gasoline engine with two powerful electric motors and a large-capacity battery pack.

The hybrid powertrain generates a peak combined output rating of 438 horsepower and can effortlessly accelerate the Lexus LS 600h L from zero-to-60 mph in just 5.5 seconds.
Mid-range acceleration is even more impressive. The electric motor system is capable of delivering maximum torque on demand and is most beneficial during passing maneuvers.
The Lexus LS 600h L can accelerate from 50-70 mph in a rapid 3.5 seconds.
Its combined EPA fuel economy rating of 21 mpg is equal to or better than the combined fuel-economy ratings of some V6 all-wheel-drive mid-sized luxury sedans.

The innovative V8 features an electric motor-driven Variable Valve Timing with intelligence and Electrically controlled intake cam (VVT-iE). This combination of VVT-i with electric-motor driven intake and an oil controlled VVT-I exhaust system achieves superior engine-startup operation and high-output performance.
The specially developed Hydrocarbon Adsorber and Catalyst (HCAC) system is linked to the two-way exhaust to help prevent hydrocarbons contained in the exhaust from being released into the atmosphere during cold start up when the catalysts are not up to temperature.

Sunday, March 22, 2009

Lexus LF-A Roadster Concept

Lexus LF-A Roadster Concept

The engineers and designers at Lexus continue to use their groundbreaking LF-A premium sports car concept as a medium for expressing their ideas about what a high-performance sporting vehicle not only can be, but should be. In this latest expression of the LF-A, they have removed the car's top to create a high-performance roadster.

The LF-A Roadster is based on the sturdy yet lightweight carbon-fiber and aluminum body used for the LF-A coupe, which helps maintain the structure's strength and rigidity even without a top.

Like its coupe counterpart, the LF-A Roadster is powered by a high-revving V10 engine that approaches 5.0 liters in displacement. The V10, capable of more than 500 horsepower and test-track speeds greater than 200 mph, is mounted in front of the passenger compartment but behind the front-axle centerline in what the LF-A's engineers refer to as a "front-mid" configuration.

The engine is connected via a torque tube and propeller shaft to a transaxle that is controlled by paddle shifters. The torque tube is a structural member that adds rigidity to the drivetrain and chassis while also reducing vibration.

Styling is rooted in the Lexus L-Finesse design philosophy, conferring the LF-A Roadster's front end with a compact, low-profile, aerodynamic shape. Like its coupe counterpart, the LF-A Roadster stands just 48 inches tall, but the Roadster configuration adds a speed adaptive rear wing.

The rear is marked by a pair of wrap-around, arrowhead-shaped taillights that bracket a pair of large grilles. These grilles vent the heated air from the car's two rear-mounted radiators into the LF-A Roadster's aerodynamic wake. The radiators are fed cool air by two large intake ducts mounted just above the rear wheel wells. This aft radiator positioning not only allowed the designers to keep the car's front profile low and tight but also aided the LF-A's chassis engineers in their search for optimal weight distribution.

Helping to provide balance and scale to the design, which features an overall length of 175.6 inches and a wheelbase of 102.6 inches, are high-performance tires on turbine-styled alloy wheels. The front tires are 265/35R20s, while the rears are 305/30R20s. Like the LF-A coupe, the brakes consist of 14.2-inch cross-drilled, vented discs up front, and 13.6-inch cross-drilled, vented discs at the rear. The front brake calipers are six-piston units and the rear calipers use four pistons each.

An "F" logo, located on each front fender of the Roadster, indicates the vehicle's status as a part of the new "F" marque. The name is derived from the original "F" designation for the first Lexus LS prototype. That vehicle was internally coded "Circle-F," with the "F" standing for "flagship." The Circle-F designation further evolved into the code name Flagship One, or F1, and the first F1 concept developed into Lexus' first vehicle, the LS. Since then, the "F" code has come to signify a special vehicle program within Lexus that falls outside the normal engineering and development process. In addition, Fuji Speedway is the IS F's home circuit, and the shape of the F-logo was inspired by many of the track's turns. The all-new Lexus IS F sport sedan is the first production vehicle to carry the F marque.

Lexus LF-A Roadster Concept Preliminary Specifications

* Body Type: Two seat roadster
* Powertrain
o Type: Front-mid-engine, rear-mid-transaxle
o Engine: V10 (under 5.0-liters)
o Transmission: SMT (sequential manual transmission)
o Horsepower: More than 500
o Top Speed: More than 200 mph
* Tire Size
o Front: 265/35R20
o Rear: 305/30R20
* Dimensions (inches)
o Overall Length: 175.6
o Overall Width: 74.6
o Overall Height: 48.0
o Wheelbase: 102.6