Internal combustion engine

Details Internal combustion engine Internal combustion engine

1990-02-14

1991-03-19

Wolfe, Willis R.

Internal-combustion engines

Precombustion and main combustion chambers in series

Having combustible mixture forming means

123263, 123279, F02B 1908

Patent

active

050001442

ABSTRACT:
In a valve-controlled internal combustion engine with direct fuel injection and a swirling air charge, a combustion chamber is located in the piston and is configured as a toroidal part ending in a throat-like cylindrical part towards the piston top. A narrow, ring-shaped overflow passage leads from the toroidal part to the cylindrical part of the combustion chamber. The proposal is put forward that the thermal and fluid-mechanical parameters be improved by placing the axis of the combustion chamber between the tip of the injection nozzle and the cylinder axis, and by varying the width of the ring-shaped overflow passage. The narrowest part of said overflow passage lying in the area closest to the tip of the nozzle, and further, the top of the center part is unsymmetrical, with a minimum distance to the injection jets at upper dead center of the piston.

REFERENCES:
patent: 4779587 (1988-10-01), Schweinzer et al.

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