Start up control system for direct fuel injection engine and the

Details Start up control system for direct fuel injection engine and the Start up control system for direct fuel injection engine and the

1997-01-31

1998-04-07

Wolfe, Willis R.

Internal-combustion engines

Combustion chamber means having fuel injection only

Having a particular relationship between injection and...

123419, 123424, 123491, F02D 4500

Patent

active

057352410

ABSTRACT:
A start up control system of an in-cylinder direct fuel injection engine includes, cylinder identifying means for identifying a particular cylinder based on crank pulses and cam pulses, engine speed calculating means for calculating engine speed, second engine speed calculating means for calculating a start up engine speed of a particular cylinder during its combustion stroke, and start up judging means for judging whether the particular cylinder is in a starting up condition or has completed firing. The system further includes start up selecting means for selecting a start up control including fixing the fuel injection starting timing at a predetermined crank angle and at the same time establishing ignition timing so as to ignite when a specified time has elapsed after the fuel injection finishing time when it is judged that the particular cylinder is in a starting up condition and for selecting a normal operation control including establishing both fuel injection starting timing and ignition timing according to engine operating conditions when it is judged that the particular cylinder has completed firing.

REFERENCES:
patent: 4459961 (1984-07-01), Nishimura et al.
patent: 4982712 (1991-01-01), Abe

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