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Title: Internal combustion engine exhaust cleaning method and system

Abstract: Rich and lean air-fuel mixtures can be alternately supplied into engine cylinders in response to engine load to effectively operate an afterburner.


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Inventors: Masaki, Kenji (Yokohama, JA)
Saito, Masaaki (Yokohama, JA)

Application Number: 531986
Filing Date: 1974-12-12
Publication_date: 1976-09-28
Assignee: Nissan Motor Co., Ltd. (Yokohama, JA)
Primary Class(es): 60/274 60/282, 60/285, 123/59.5, 123/443
Other Classes:
US Patent Ref:
3708980Jan, 1973Truxell60/301.
3785153Jan, 1974Schwing60/282.
3827237Aug, 1974Linder60/274.

Other Refs:
Primary Examiner: Hart, Douglas
Assistant Examiner:
Attorney: