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

1998-02-09

1999-08-31

Argenbright, Tony M.

Internal-combustion engines

Combustion chamber means having fuel injection only

Injection of fuel onto igniter, deflector, heater, or atomizer

123301, 123302, F02B 2310, F02B 3100

Patent

active

059439939

ABSTRACT:
The invention relates to a four-stroke internal combustion engine with spark ignition and direct injection of the fuel into the combustion chamber, with a reciprocating piston for each cylinder and a roof-shaped top of the combustion chamber with at least one exhaust valve and at least two intake valves, as well as intake ports generating a tumble flow in the combustion chamber, as well as a fuel injection device opening into the combustion chamber, and an ignition source located in the area of the cylinder axis in the roof of the combustion chamber. In order to obtain good internal flow conditions the surface of the piston facing the combustion chamber is provided with a substantially Y-shaped configuration of flow guiding ribs, of which an arc-shaped rib is positioned approximately in the center of the piston and encloses a trough-shaped recess, and a longitudinal rib is provided on the side of the arc-shaped rib opposite of the recess, and the ignition source is positioned above the recess, and the fuel injection device is positioned in the area of the cylinder wall between the intake valves.

REFERENCES:
patent: 3766900 (1973-10-01), Aiti
patent: 4751902 (1988-06-01), August
patent: 4763622 (1988-08-01), Indra et al.
patent: 5727520 (1998-03-01), Wirth et al.
SAE Paper No. 941088 by Lawrence Evers entitled, "Characterization of the Transient Spray from a High Pressure Swirl Injector".

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