Control apparatus for an in-cylinder injection type internal com

Details Control apparatus for an in-cylinder injection type internal com Control apparatus for an in-cylinder injection type internal com

1997-12-11

1998-10-20

Solis, Erick R.

Internal-combustion engines

Combustion chamber means having fuel injection only

Combustible mixture stratification means

12318455, 123305, F02M 3510, F02B 1700

Patent

active

058231609

ABSTRACT:
A control apparatus for an in-cylinder injection type internal combustion engine includes an electronic control unit and an induction control system for changing the effective length of an intake passage of an induction system of the engine. The electronic control unit selects one of fuel injection modes including a compression-stroke injection mode and an intake-stroke injection mode in accordance with the engine operating state. When the engine is operated in a low engine-speed zone of a compression-stroke injection region, the electronic control unit controls the induction control system so as to make the effective length of the intake passage shorter than that for other engine operating region, to thereby attain a stable combustion, improved fuel efficiency and improved engine output in any fuel injection mode.

REFERENCES:
patent: 4890586 (1990-01-01), Fujii et al.
patent: 4932369 (1990-06-01), Parr
patent: 5438964 (1995-08-01), Breidenbach

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