Four-stroke internal combustion engine with spark ignition

Details Four-stroke internal combustion engine with spark ignition Four-stroke internal combustion engine with spark ignition

1997-03-31

1998-03-17

Wolfe, Willis R.

Internal-combustion engines

Combustion chamber means having fuel injection only

Having a particular relationship between injection and...

123307, 123309, 123301, 123302, F02F 328, F02B 3104

Patent

active

057275203

ABSTRACT:
In order to optimize combustion in a four-stroke spark-ignition engine with direct fuel injection, the conditions of charge flow are improved by providing the top surface of each piston with an essentially U-shaped guiding rib, which is open towards the exhaust side of the combustion chamber, fuel injection taking place into the concave area inside the guiding rib. The nozzle opening of the fuel injection device as well as the ignition source are positioned in the area of the cylinder center, i.e., preferably on different sides of the longitudinal center plane of the engine.

REFERENCES:
patent: 5115774 (1992-05-01), Nomura et al.
patent: 5622150 (1997-04-01), Fraidl et al.
patent: 5642706 (1997-07-01), Wirth et al.
SAE Paper No. 940188 by Lawrence W. Evers, "Characterization of the Transient Spray from a High Pressure Swirl Injector."

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