Toyota Camry Hybrid AHV40 Manual page 129

CH-28
Outline of Regenerative Brake Cooperative Control Function
1) General
D Regenerative brake consists of a resistance force that is generated at the rotational axle in the reverse
direction of the rotation of the generator (MG2) that is generating electricity. The greater the generated
amperage (battery charging amperage), the greater will be the resistance force.
Rotating direction
to electricity generation
Resistance
MG1
Engine
Brake Force
D The drive axle and MG2 are joined mechanically. When the drive wheels rotate MG2 and cause it to
operate as a generator, a regenerative brake force of MG2 is transmitted to the drive wheels. This force
is controlled by the THS II, which controls the generation of electricity.
The regenerative brake cooperative control does not rely solely on the braking force of the hydraulic
brake system to supply the brake force required by the driver. Instead, by effecting cooperative control
with the THS II, this control provides a joint braking force provided by the regenerative brake and the
hydraulic brake. As a result, this control minimizes the loss of the kinetic energy associated with the
normal hydraulic brake, and recovers this energy by converting it into electrical energy.
CHASSIS - BRAKE
Rotating direction
to electricity generation
Inverter
MG2
Resistance
MG1
Engine
Brake Force
Inverter
MG2
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