Injection control apparatus for an engine

Details Injection control apparatus for an engine Injection control apparatus for an engine

2006-04-04

2006-04-04

Argenbright, Tony M. (Department: 3747)

Internal-combustion engines

Charge forming device

Including cylinder pressure or temperature responsive means

C123S436000, C123S674000

Reexamination Certificate

active

07021288

ABSTRACT:
An injection quantity control apparatus for accurately performing an injection quantity learning process in a diesel engine creates an environment for obtaining a characteristic value in a one-to-one relationship with an actual injection quantity. A controller performs a one-shot injection operation for a cylinder of an engine while the environment is established. An injection command quantity is corrected based on an engine speed variation caused by the one-shot injection. After establishment of the condition and before the injection, the opening of a valve is controlled to be smaller than a reference and an opening of each of a diesel throttle and variable turbocharger is controlled to be larger than a reference. A composition of an air flowing into a combustion chamber is stabilized to ensure that the characteristic value detected after the one-shot injection is in a one-to-one relationship with the actual injection quantity.

REFERENCES:
patent: 5385129 (1995-01-01), Eyberg
patent: 6694945 (2004-02-01), Kawaguchi et al.
patent: 6755176 (2004-06-01), Takeuchi et al.
patent: 6907861 (2005-06-01), Asano et al.
patent: 001245809 (2002-10-01), None

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