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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 front electric motor/generator (MG2) and the rear electric motor/generator
(MGR*) both drive 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. MGR* is not powered. The engine drives
MG1 as a generator to power MG2 and charge the hybrid battery as needed.
Full acceleration
The engine, MG2, and MGR* work together to drive the vehicle. The hybrid
battery supplies additional power to MG2 and MGR.
Cruising (constant speed)
Primarily, the engine will drive the vehicle. The engine, MG1, MG2, and MGR* will
come on as needed depending on road conditions and other factors. MG2 and
MGR* may act as motors or as generators 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 and MGR* act as generators to
regenerate electricity to charge the hybrid battery. The engine may turn off before
the vehicle comes to a complete stop.
Backing-up
MG2 and MGR* reverse direction to drive the vehicle. The engine is typically off,
unless it is needed to recharge the hybrid battery or warm-up the engine.
RX 400h Hybrid Technology (continued)
* Vehicleswith optionalAll-WheelDriveonly.
HYBRID OVERVIEW
RX 400h