System and method to reduce stall during deceleration fuel...

Details System and method to reduce stall during deceleration fuel... System and method to reduce stall during deceleration fuel...

2005-12-22

2009-08-11

Marmor, Charles A (Department: 3655)

Interrelated power delivery controls, including engine control

Brake control

Brake condition change modifies engine condition

C477S183000

Reexamination Certificate

active

07572204

ABSTRACT:
A method of controlling fuel injection in an engine of a vehicle having an anti-lock braking system comprises under conditions of degraded operation of an anti-lock braking system, restricting deactivation of the fuel injection during deceleration vehicle operating conditions. According to another aspect, the method comprises under conditions where the anti-lock braking system is functioning, disabling fuel injection during at least some deceleration operations; and under conditions of degraded operation of the anti-lock braking system, restricting deactivation of the fuel injection during deceleration vehicle operating conditions. By considering the functioning of an ABS, it is possible to deactivate fuel injection during some deceleration operations during one condition to realize fuel economy gains and disable the deactivation of fuel injection at another condition to reduce engine stalls. Thus, the deceleration fuel shut off strategy may be used aggressively for improved fuel economy.

REFERENCES:
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patent: 6021638 (2000-02-01), Hochmuth
patent: 6032753 (2000-03-01), Yamazaki et al.
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patent: 6560960 (2003-05-01), Nishimura et al.
patent: 2007/0095589 (2007-05-01), Tamai et al.

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