Method for active engine stop of a hybrid electric vehicle

Details Method for active engine stop of a hybrid electric vehicle Method for active engine stop of a hybrid electric vehicle

2007-05-15

2007-05-15

Le, David D. (Department: 3681)

Interrelated power delivery controls, including engine control

Plural engines

Electric engine

C477S004000, C477S005000

Reexamination Certificate

active

10846144

ABSTRACT:
A method for providing an active engine stop of the engine of a hybrid electric vehicle. The method utilizes the electric machine to oppose and rapidly stop the rotation of the engine at a controlled rate. The method includes the calculation of an input speed reduction trajectory using the engine speed when the active engine stop request is made and a predetermined speed reduction interval. The speed reduction interval is less than a time from the active stop request to the shutoff command to the electric machine The method provides rapid deceleration of the engine, particularly through the powertrain resonance speed, reducing the amount of vibration energy dissipated through the powertrain and chassis. The method removes the electric machine torques from the engine prior to achieving zero engine speed in order to avoid imparting a negative engine speed or counter-rotation of the engine.

REFERENCES:
patent: 5931757 (1999-08-01), Schmidt
patent: 6278195 (2001-08-01), Yamaguchi et al.
patent: 6500089 (2002-12-01), Lasson et al.
patent: 6558290 (2003-05-01), Phillips et al.
patent: 6832148 (2004-12-01), Bennett et al.
patent: 2003/0004031 (2003-01-01), Philips et al.
patent: 2003/0183467 (2003-10-01), Kozarekar

Affiliated with

Also associated with

Rating

Method for active engine stop of a hybrid electric vehicle does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for active engine stop of a hybrid electric vehicle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for active engine stop of a hybrid electric vehicle will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3756306