Combustion chamber structure of a gas engine

Details Combustion chamber structure of a gas engine Combustion chamber structure of a gas engine

1998-08-18

2000-06-13

Kwon, John

Internal-combustion engines

Precombustion and main combustion chambers in series

Having specific connecting passage means between...

123270, F02B 1902

Patent

active

060736046

ABSTRACT:
In the combustion chamber structure of the gas engine the combustion chamber members are formed with the sub-communication holes allowing communication between the main combustion chambers and the pre-combustion chambers and also with throat holes in which throat hole valves are installed. This structure avoids excessively high compressed air pressure in the main combustion chambers during the compression stroke and reduces the compression work to improve performance. The sub-communication holes open at the wall surfaces situated in the main combustion chambers and also at the upper wall surfaces of the pre-combustion chambers. The axes of the ports of the sub-communication holes opening to the main combustion chambers extend toward the center axes of the throat holes. The axes of the ports of the sub-communication holes opening to the pre-combustion chambers extend offset from the center axes of the pre-combustion chambers. Hence, this gas engine can reduce the compression work, lower the maximum pressure of the compressed air at the end of the compression stroke, prevent the gas fuel from remaining in the pre-combustion chambers, and enhance the air utilization factor, improving thermal coefficient.

REFERENCES:
patent: 4854281 (1989-08-01), Hareyama et al.
patent: 5454356 (1995-10-01), Kawamura

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