Lexus LS 600h L - Manual (Page 23)

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How Lexus Hybrid Drive works
Lexus Hybrid Drive incorporates gas-engine power with electric motor
efficiency in a seamless manner.
Typically, the system works as follows:
Starting from a stop
The Electric Drive Motor (MG2) drives the vehicle. The engine is not required to
start moving the vehicle, but may come on to charge the hybrid battery or make
heat available for the climate control and emissions systems.
Normal acceleration
MG2 and the engine drive the vehicle. The engine drives MG1 as a generator to
power MG2 and charge the hybrid battery as needed.
Full acceleration
The engine and MG2 work together to drive the vehicle. The hybrid battery
supplies additional power to MG2.
Cruising (constant speed)
Primarily, the engine will drive the vehicle. The engine, MG1 and MG2 will come
on as needed depending on road conditions and other factors. MG2 may act as
a motor or as a generator, depending on the need to make power or regenerate
electricity to recharge the hybrid battery.
Coasting and braking
As part of the regenerative braking system, MG2 can act as a generator to
regenerate electricity to charge the hybrid battery. The engine may turn off
before the vehicle comes to a complete stop.
Backing-up
MG2 reverses direction to drive the vehicle. The engine is typically off, unless it is
needed to recharge the hybrid battery or warm-up the engine.
“EV” drive mode
In EV drive mode, the electric motor, powered by the hybrid battery, is used to
drive the vehicle. This mode allows you to drive without concern for exhaust gas
emissions at low speeds for approximately a distance of 1/2 mile.
(Please see page 3 for more information.)
LS 600h L Hybrid Technology
(continued)
HYBRID OVERVIEW LS 600h L