Vehicle control apparatus and method

Details Vehicle control apparatus and method Vehicle control apparatus and method

2008-01-11

2009-02-17

Bacon, Anthony L. (Department: 4159)

Internal-combustion engines

Engine speed regulator

Responsive to deceleration mode

C123S320000, C123S332000, C477S107000, C477S109000, C477S901000

Reexamination Certificate

active

07490588

ABSTRACT:
A vehicle control apparatus includes a first fuel-cut duration extending portion that, when a fuel-cut is being executed during deceleration of the vehicle, slows the decrease in the engine speed by executing a slip control of a lock-up clutch; and a second fuel-cut duration extending portion which, when the engine speed has decreased to a coast-downshift threshold, which is higher by a given amount than a fuel-cut cancellation threshold, while the slip control is being executed, allows to downshift the automatic transmission if the road on which the vehicle is presently traveling has a downhill gradient that is larger than a reference value.

REFERENCES:
patent: 5816979 (1998-10-01), Shiiba et al.
patent: 5890993 (1999-04-01), Horiguchi et al.
patent: 6188316 (2001-02-01), Matsuno et al.
patent: 6-174074 (1994-06-01), None
patent: 06174074 (1994-06-01), None
patent: 6-193491 (1994-07-01), None
patent: 2000-154742 (2000-06-01), None
patent: 2003-74695 (2003-03-01), None
patent: 2005-9510 (2005-01-01), None

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