Control apparatus of hybrid vehicle

Details Control apparatus of hybrid vehicle Control apparatus of hybrid vehicle

2001-12-12

2003-07-22

Estremsky, Sherry (Department: 3681)

Interrelated power delivery controls, including engine control

Plural engines

Electric engine

C477S020000, C475S005000, C180S065310

Reexamination Certificate

active

06595895

ABSTRACT:

INCORPORATION BY REFERENCE
The disclosure of Japanese Patent Application No. 2000-402888 filed on Dec. 28, 2000, including the specification, drawings and abstract thereof, is incorporated herein by reference in its entirety.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a control apparatus of a hybrid vehicle equipped with an internal combustion engine and a motor-generator and, more particularly, to a control apparatus of a hybrid vehicle for performing a torque reducing control at the time of a speed shift.
2. Description of the Related Art
With regard to automatic transmission-equipped vehicles, it is known that a torque reducing control is performed for the purpose of reducing the shift shock occurring during a speed shift.
In order to reduce the shift shock during a speed shift, it is effective to create a smooth semi-clutch state by reducing the working pressure on the clutch. However, reducing the working pressure of the clutch involves a drawback of a prolonged shift duration. Therefore, the engine torque is reduced at the time of a speed shift through an engine torque reducing control so as to lessen the shift shock without causing a prolonged shift duration.
In order to reduce the engine torque, it is a normal practice to employ a method in which the engine ignition timing is changed. That is, the engine torque is reduced through a generally-termed engine ignition timing-retarding control.
However, since the engine ignition timing-retarding control changes the fuel ignition timing from an optimal timing, the state of exhaust gas deteriorates during the timing-retarding control though the deterioration may last only for a short time.
This problem also occurs in hybrid vehicles equipped with an internal combustion engine and a motor-generator as drive power sources.
SUMMARY OF THE INVENTION
An object of the invention is to provide a control apparatus of a hybrid vehicle, which prevent deterioration of auto emission occurred by the torque reduction control in a hybrid vehicle.


REFERENCES:
patent: 5935040 (1999-08-01), Tabata et al.
patent: 5944630 (1999-08-01), Omote
patent: 6359404 (2002-03-01), Sugiyama et al.
patent: 2002/0065589 (2002-05-01), Ostberg et al.
patent: 11069508 (1997-08-01), None

Affiliated with

Also associated with

Rating

Control apparatus of hybrid 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 Control apparatus of hybrid vehicle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control apparatus of hybrid vehicle will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3073723