Dual spark-ignition internal combustion engine
Patent 4116179 Issued on September 26, 1978. Estimated Expiration Date: 
February 4, 1997. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 4, 1997. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1171211 1459630 1722145 2257631 2576819 3164143 3219019 3885538 3901203 Low emission combustion system for internal combustion engine using multiple spark InventorsAssigneeApplicationNo. 05/765770 filed on 02/04/1977US Classes:123/310COMBUSTION CHAMBER HAVING MULTIPLE SPARK GAPSExaminersPrimary: Burns, Wendell E.Attorney, Agent or FirmInternational ClassesF02F 1/24 (20060101)F02B 23/08 (20060101) F02M 25/07 (20060101) F02P 15/00 (20060101) F02P 15/02 (20060101) F02B 1/04 (20060101) F02B 1/00 (20060101) Foreign Application Priority Data1976-02-06 JPAbstractEach combustion chamber of an internal combustion engine is divided into four generally equal imaginary parts by a longitudinal vertical imaginary plane parallel with the longitudinal axis of the cylinder head of the engine and a lateral vertical imaginary plane perpendicular to the longitudinal vertical imaginary plane. Two spark plugs, and intake and exhaust valves are disposed on the cylinder head wall surface defining the upper part of the combustion chamber, and located at the four generally equal imaginary parts, respectively.Field of SearchOverhead camshaft | |
