Internal combustion engine with improved exhaust valve arrangement
Patent 4116180 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 2576851 3164143 3219019 3885535 3901203 Low emission combustion system for internal combustion engine using multiple spark InventorsAssigneeApplicationNo. 05/765771 filed on 02/04/1977US Classes:123/310, COMBUSTION CHAMBER HAVING MULTIPLE SPARK GAPS123/315Multiple exhaustExaminersPrimary: Burns, Wendell E.Attorney, Agent or FirmInternational ClassesF02B 29/00 (20060101)F02F 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 JPAbstractExhaust gases, which are slightly cooler than normal due to NOx suppressing ignition of the charge containing a large amount of recirculated gas by dual spark plugs, are exhausted via a large diameter exhaust valve to reduce the time for which they exceed the speed of sound and transfer heat to the cylinder head to maintain a high CO and HC oxidizing temperature. The exhaust valve is diametrically opposed to the inlet valve and has a cross sectional area of 19 to 24% of the cylinder bore.Field of SearchOverhead camshaft | |
