Two-cycle engine with stabilized combustion and method of operat

Details Two-cycle engine with stabilized combustion and method of operat Two-cycle engine with stabilized combustion and method of operat

1978-05-25

1980-09-30

Myhre, Charles J.

Internal-combustion engines

Two-cycle

Whirl through piston-controlled ports

123 65VC, 123291, 123275, 123287, 123301, F02D 3502, F02B 304, F02B 2310

Patent

active

042249058

ABSTRACT:
A two cycle, spark ignition internal combustion engine of the class having a combustion chamber divided into a relatively small ignition region and a larger combustion region including the cylinder and piston is defined. Substantially stoichiometric fuel-air mixtures are independently supplied to the ignition region in substantially fixed quantity and to the larger region in variable quantity and compressed simultaneously so that the mixtures remain completely separated prior to ignition. The mixtures are stratified with respect to excess air supplied to both regions and to exhaust gases in the engine cylinder, and combustion initiated in the ignition region ignites the variable-sized mixture in the larger region. Burning proceeds from stoichiometric mixtures to lean mixtures as the stratified excess air is mixed into the burning gases. When no fuel is supplied to the large region, the small region functions independently and burns its fuel efficiently. The exhaust gas recycled in the cylinder acts to stabilize the combustion by retaining heat from cycle to cycle at light load and absorbing heat at heavy load.

REFERENCES:
patent: 1096405 (1914-05-01), Thomson
patent: 2655906 (1953-10-01), Udale
patent: 2808037 (1957-10-01), von Seggern et al.
patent: 3255739 (1966-06-01), von Seggern et al.
patent: 3418981 (1968-12-01), von Seggern et al.
patent: 3443552 (1969-05-01), von Seggern et al.

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