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Primary Examiner: Burns, Wendell E.
Assistant Examiner:
Attorney: Gifford, Chandler, VanOphem, Sheridan & Sprinkle

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Title: Low emission internal combustion engine

Abstract: A low emission, internal combustion compression ignition engine having a cylinder, a piston movable in the cylinder and a pre-combustion chamber communicating with the cylinder near the top thereof and in which low emissions of NO.sub.x are achieved by constructing the pre-combustion chamber to have a volume of between 70% and 85% of the combined pre-chamber and main combustion chamber volume when the piston is at top dead center and by variably controlling the initiation of fuel injection into the pre-combustion chamber.

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Inventors: Karaba, Albert M. (Muskegon, MI, US)

Application Number: 733303
Filing Date: 1976-10-18
Publication_date: 1979-02-27
Assignee: United States of America (Washington, DC)
Primary Class(es): 123/259 123/78R, 123/445
Other Classes:
US Patent Ref:

2594681	Apr, 1952	Ricardo et al.	123/32.
3777724	Dec, 1973	Kiley	123/32.
3815564	Jun, 1974	Suda et al.	123/139.
3915134	Oct, 1975	Young	123/119.
3925989	Dec, 1975	Pustelnik	123/119.
3973540	Aug, 1976	List	123/139.

Other Refs: Other References: The High Speed Internal Combustion Engine; Harry Ricardo and H. Glyde third edition reprinted 1944, pp. 412, 415, 416, 417 and title page.
The High Speed Internal Combustion Engine; Harry Ricardo and J. Hempson, Fifth Edition, 1968, pp. 32, 33, 34 and title page.
Air Pollution Control In Transport Engines; The Institute of Mechanical Engineers 1972, pp. 21-33 and title page.
11TH Summary Report CONF-761028, UC-96, TEC 77/001 title page and pp. 141-157 Contractors Meeting Oct. 18, 1976.