Spark ignition engine having combustion chamber provided with ve

Details Spark ignition engine having combustion chamber provided with ve Spark ignition engine having combustion chamber provided with ve

1974-05-03

1976-11-23

Myhre, Charles J.

Internal-combustion engines

Valve

Rotary

123 30D, 123 32C, 123 32B, 123 32SP, F02B 2308

Patent

active

039930378

ABSTRACT:
A vent valve allows a combustion chamber arranged to burn a swirling lean mixture to communicate with either an intake manifold or exhaust manifold through a vent port by-passing the intake or exhaust valve, for a short period just before ignition to discharge a fraction of the mixture from the combustion chamber. The discharge weakens the turburent flow of the mixture and results in a decreased combustion temperature, which is advantageous for suppression of NOx formation and prevention of combustion noise generation.

REFERENCES:
patent: 3205876 (1965-09-01), Stuhr
patent: 3451213 (1969-06-01), Lang
patent: 3763834 (1973-10-01), Geiger et al.

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