Accumulator fuel injection apparatus compensating for...

Details Accumulator fuel injection apparatus compensating for... Accumulator fuel injection apparatus compensating for...

2005-11-01

2009-06-30

Cronin, Stephen K (Department: 3747)

Internal-combustion engines

Combustion chamber means having fuel injection only

Using multiple injectors or injections

C123S446000, C123S472000, C123S490000

Reexamination Certificate

active

07552709

ABSTRACT:
A common rail injection system for internal combustion diesel engines is provided which is designed to correct a limit of width of an ineffective injection command pulse signal which is to be applied to each fuel injector, but causes the injector to produce no spray of fuel in order to minimize a variation in quantity of fuel injected to the engine between the injectors arising from the individual variability or aging of the injectors. The system works to changes the width of a pilot injection command pulse signal to search a value thereof when an engine operation variation such as a change in speed of the engine exceeds or decreases below a threshold at which the injector may be viewed as having sprayed the fuel actually or stopped spraying the fuel actually and determines the limit of width of the ineffective injection command pulse signal using the searched value.

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patent: 2001-152941 (2001-06-01), None
patent: 2002-213287 (2002-07-01), None

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