Title: Clean spark ignition internal combustion engine

Abstract: A two or four-stroke spark ignition engine has fuel injectors located at or near BDC, and a separate recess in its cylinderhead to trap a lean mixture for causing more complete combustion of a rich mixture outside the recess after the rich mixture is ignited.

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Inventors: Ting, Hui-tzeng (Crum Lynne, PA, US)

Application Number: 667409
Filing Date: 1976-03-16
Publication_date: 1977-07-19
Assignee:
Primary Class(es): 123/257 123/275, 123/310
Other Classes:
US Patent Ref:

2156665	May, 1939	Mallory	123/32.
3079901	Mar, 1963	Hallberg	123/32.
3318292	May, 1967	Hideg	123/32.
3621821	Nov, 1971	Jarnuszkiewicz	123/32.
3937188	Feb, 1976	Wrigley	123/32.

Other Refs:
Primary Examiner: Cox, Ronald B.
Assistant Examiner:
Attorney: