F - Mech Eng,Light,Heat,Weapons – 02 – M
Patent
F - Mech Eng,Light,Heat,Weapons
02
M
123/242, 123/249
F02M 25/06 (2006.01) F02B 23/08 (2006.01) F02F 1/24 (2006.01) F02F 1/42 (2006.01) F02M 25/07 (2006.01) F02B 1/04 (2006.01)
Patent
CA 1075105
ABSTRACT OF THE DISCLOSURE An internal combustion engine of the reciprocating piston type, which is provided with an exhaust gas re- circulation circuit to suppress the formation of NOx and has two or three spark plugs for each combustion chamber. There is a substantial overlap of the opening periods of exhaust and intake valves, so that a portion of the combustion gas is left unexhausted. The com- bustion chamber has a simple shape such as hemisphere, and the spark gaps of the plural spark plugs are arranged distant from each other in each combustion chamber so as to respectively share approximately equally divided portions of each combustion chamber. The number of the spark plugs is two when the volume of the recirculated exhaust gas, including the un- exhausted combustion gas, is about 50% at the maximum of the volume of air admitted into the combustion chamber but three when the recirculated exhaust gas amounts to about 60% of the air at the maximum. - 1 -
273702
Hayashi Yoshimasa
Nakajima Yasuo
Yoshimura Tooru
LandOfFree
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