F - Mech Eng,Light,Heat,Weapons – 02 – B
Patent
F - Mech Eng,Light,Heat,Weapons
02
B
123/244, 123/98
F02B 19/18 (2006.01) F02B 19/12 (2006.01) F02P 9/00 (2006.01)
Patent
CA 1054004
ABSTRACT OF THE DISCLOSURE: A spark ignition internal combustion engine comprising a cylinder; a reciprocating piston in the cylinder; a cylinder head closing one end of the cylinder; a main section of a com- bustion chamber formed in the cylinder between the piston and cylinder head; an auxiliary section of the combustion chamber communicating only with the main section through a connecting passage; the cylinder head formed with an intake passage opening to the main section and with an exhaust passage opening to the main section; an intake valve to open and close the intake pas- sage; an exhaust valve to open and close the exhaust passage; means for supplying an air fuel mixture to the intake passage; means for supplying a portion of exhaust gas discharged from the exhaust valve through the exhaust passage to the intake passage. The volume of the auxiliary section is from 3 percent to 20 per- cent of the volume of the main section and the cross-sectional area of the connecting passage being from 0.1cm2 to 2.0cm2 so that in operation of the engine a proportion of the amount of residual gas within the auxiliary section to the volume of the auxiliary section is higher than a proportion of the amount of residual gas within the main section to the volume of the main section; and that during the compression cycle part of the com- bustible charge within the main section is forced through the connecting passage into the auxiliary section. A spark plug is provided to produce a spark within the auxiliary section.
259449
Ito Yoji
Kunii Kazuya
Miyazaki Hiroaki
Sakai Yasuo
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