Cylinder direct injection spark-ignition engine

Details Cylinder direct injection spark-ignition engine Cylinder direct injection spark-ignition engine

1998-07-27

1999-12-28

Solis, Erick R.

Internal-combustion engines

Combustion chamber means having fuel injection only

Combustible mixture stratification means

123301, 123302, 123308, F02B 1700

Patent

active

060067187

ABSTRACT:
A cylinder direct injection spark-ignition engine in which fuel is directly injected from a fuel injector into each cylinder. The engine has an intake system having two intake ports for each cylinder. A swirl control valve is movably disposed in a passage connected to one of the intake ports. The swirl control valve functions to regulate the intensity (a swirl ratio) of swirl to be generated in the cylinder. Sensors are provided to detect an engine operating condition representative of a stratified charge combustion region. Additionally, a controller is provided to control the swirl control valve so as to change the swirl ratio in accordance an engine speed of the engine, when the current engine operating condition is detected to correspond to the stratified charge combustion region.

REFERENCES:
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patent: 5190008 (1993-03-01), Yamasaki et al.
patent: 5609132 (1997-03-01), Minowa et al.
patent: 5765372 (1998-06-01), Mitobe et al.
patent: 5850816 (1998-12-01), Ohsuga et al.
patent: 5873344 (1999-02-01), Kudou et al.
patent: 5915357 (1999-06-01), Harada et al.
Patent Abstracts of Japan, vol. 009, No. 162 (M-394), Jul. 6, 1985 (JP 60 036721 A (MAZDA KK) Feb. 25, 1985).

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