Hybrid vehicle and control method of hybrid vehicle

Details Hybrid vehicle and control method of hybrid vehicle Hybrid vehicle and control method of hybrid vehicle

2006-03-03

2009-06-30

Jeanglaud, Gertrude Arthur (Department: 3661)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Electric vehicle

C701S084000, C477S107000, C903S917000, C903S945000

Reexamination Certificate

active

07555373

ABSTRACT:
In a hybrid vehicle equipped with an engine and a motor that are connected to a driveshaft linked to an axle via a gear mechanism, on condition that an output torque of the motor (previous Tm2*) is not lower than a preset reference output torque Tm2ref (step S190) at a moment of a start requirement of the engine (steps S130and S180), the drive control of the invention starts the engine (step S220). On conditions that the output torque of the motor (previous Tm2*) is lower than the preset reference output torque Tm2ref (step S190), that a torque demand Tr* is lower than a preset reference torque level Tref (step S200), and that a state of charge SOC of a battery is not lower than a preset reference charge level Sref (step S210), the drive control keeps the engine at a stop (step S140), regardless of the start requirement. This arrangement effectively reduces the potential for backlash or gear rattle in the gear mechanism due to a torque pulsation applied to the driveshaft at a start of the engine.

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