Combustion chamber of an internal combustion engine
Patent 4296720 Issued on October 27, 1981. Estimated Expiration Date: 
May 30, 1999. 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.
May 30, 1999. 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 2843103 3154061 3776212 3809042 Internal combustion engine with combustion chambers which create a squish and swirl of an air-fuel mixture Combustion chamber of an internal combustion engine Patent #: 4182279 InventorsAssigneeApplicationNo. 06/043670 filed on 05/30/1979US Classes:123/309, Specific spark plug location123/638, System fires multiple spark plugs per cylinder123/661Having squish areaExaminersPrimary: Feinberg, Craig R.Attorney, Agent or FirmInternational ClassesF02F 1/24 (20060101)F02B 23/08 (20060101) F02B 1/00 (20060101) F02B 1/04 (20060101) Foreign Application Priority Data1978-07-20 JPAbstractAn internal combustion engine comprising a first raised portion formed on the inner wall of the cylinder head, a second raised portion formed on the top face of the piston at a position opposite to the first raised portion with respect to the axis of the piston, and a third raised portion formed on the inner wall of the cylinder head above the second raised portion. A first flat squish area is formed between the flat peripheral top face of the piston and flat bottom face of the first raised portion. A second spherical shell shaped squish area is formed between the spherical bottom wall of the third raised portion and the spherical rear face of the second raised portion. A pair of spark plugs is arranged on the top face of the combustion chamber. One of the spark plugs is arranged in the vicinity of said first raised portion, and the other spark plug is arranged in the vicinity of said third raised portion. | |
