AN ENVIRONMENTAL SOLUTION AND A CAR WITH TWO ENGINES
Combining the efforts of both an electric motor and petrol engine, the Lexus Hybrid Drive takes a V6 and plays it like a V8. The electric motor responds instantly to the throttle from standstill, while the petrol engine carries this gratifying response time through to the top end, merging their acceleration power.
When a high enough speed has been achieved, the Power Control Unit will allocate power to the petrol engine. The Controlled Continuously Variable Transmission will ensure that there is no vibration or shock when the petrol engine takes over, while the electric motor continues to support the V6 engine.
The power of the Hybrid is superior to that of turbo charge as there is no opportunity for turbo-lag. The Hybrid ensures that the maximum power of the car is instantly accessible at all times.
FEWER CARBON EMISSIONS AND GREATER REFINEMENT
The Lexus Hybrid range produces 70% fewer smog-forming emissions than the average new vehicle and a reduced CO? output on the GS450h is as 185 g/km. In addition to that, the nitrogen oxide (NO) and hydrocarbon (HC) levels have been reduced to almost zero.
While the car is stationary or running at low speeds, the Power Control Unit switches off the petrol engine making the impressive electric motor do all the work. No emissions are created or released when the petrol engine is off. The petrol engine in the hybrid vehicle can thus be smaller than non-hybrid cars and still produce the same performance without impact on the environment.
The car also does not require any external source of energy to charge the electric motor or the high performance battery - further reducing emissions that would have been created during charging.
Lexus Hybrid vehicles also conserve natural resources in other ways. The cars incorporate recyclable or high-recovery materials in the interior and on the exterior, and are built of high-quality lightweight products, which improve fuel efficiency and require fewer natural resources to construct.
The door trims are made of kenaf (of the hibiscus family) instead of woodchips. Recycled bumpers are used to make trim for the luggage compartment and recycled, shredded sun-proofing material is used to insulate the dashboard from behind for quietness.
FUEL ECONOMY TO MATCH ITS LUXURY
The dual electric motor and petrol engine of the Lexus Hybrid Drive ensure that less fuel is consumed during driving. The electric engine runs the vehicle at lower speeds and assists the petrol engine when accelerating which means the petrol engine consumes less in these situations.
The 3.5-litre V6 RX450h does an impressive 6.3 litres to the 100 km while the GS450h’s 3.5-litre V6 does 7.9 litres to 100 km, because the PCU switches off the petrol engine when the car is stationary, so the cars rely more on electricity than on fuel.
While the petrol consumption of a Lexus Hybrid is less than the average car, there are factors that affect your vehicle’s fuel economy. To help you achieve better economy with Hybrid try:
Avoiding heavy braking
When doing errands, travel to the furthest location first to warm up the catalytic converter (once this is warm the engine is used less)
Combine short trips to reduce the amount of cold starts
Maintain the correct tyre pressure
Use premium octane fuel (95 or higher)
The Hybrid range of vehicles comes with a Multi-Information Display which shows the flow of energy and fuel consumption of the car. Use this to adjust your driving style and habits for better fuel economy.
SILENCE IS HYBRID INSIDE AND OUT
As Lexus Hybrids start up and run at lower speeds using the electric motor, the noise, vibration and harshness (NVH) experienced in the vehicle is minimal when compared to that experienced in other conventional cars. When the petrol engine is on, the Electronically Controlled Continuously Variable Transmission (E-CVT) eliminates the noise level of shifting gears.
The engine mounts were moved up to reduce vibrations and the intake system was completely redesigned on the GS hybrid to improve the quietness of the vehicle. The Electric Power Steering also contributes by eliminating the hydraulic pump associated with steering. Even the low-durometer, laminated windshield and insulated body panels absorb engine, wind and road noise.
The aerodynamics of the vehicles also testify to Lexus engineers’ concern for noise levels, as the shape of the car not only enhances its speed, but noise levels as well.