Hybrid vehicle and driving resistance measurement method of...

Details Hybrid vehicle and driving resistance measurement method of... Hybrid vehicle and driving resistance measurement method of...

2005-06-10

2010-02-09

Morris, Lesley (Department: 3618)

Motor vehicles

Power

Electric

C180S065210, C180S065275, C180S065280, C180S065285, C180S065290

Reexamination Certificate

active

07658248

ABSTRACT:
In response to a coasting drive instruction for measurement of a driving resistance of a hybrid vehicle, the coasting control procedure of the invention prohibits a change of a gear position in a transmission and stops both an engine and a motor MG1.The coasting control procedure calculates a canceling torque, which cancels out a torque applied to a ring gear shaft or a drive shaft via a power distribution integration mechanism by generation of an inertia torque accompanied with a rotation speed change of the motor MG1.The calculated canceling torque is set to a torque command Tm2* of a motor MG2,and the motor MG2is driven and controlled with the torque command Tm2*. This arrangement makes the ring gear shaft or the drive shaft completely free and enables accurate measurement of the driving resistance of the hybrid vehicle during such a coasting drive of the hybrid vehicle in a fully non-driving state.

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