Lean-burn internal combustion system
Patent
·
OSTI ID:6212177
A lean-burn internal combustion system is described comprising: a main combustion chamber to which a lean mixture of fuel and air is supplied; an ignition plug operably associated with the main combustion chamber; a piston including a piston body having a toroidal chamber formed in the piston body and a flow restriction located in the piston body between the chamber and a top orifice of the piston body; means for supplying a highly concentrated mixture of fuel and air to the vicinity of the ignition plug; means for supplying a lean fuel/air mixture into the combustion chamber; and means for firing the ignition plug to burn the highly concentrated mixture and, subsequently, burning the lean mixture whereby combustion gas is jetted out of the toroidal chamber into the main combustion chamber at a later stage of combustion period of the lean mixture to mix with the lean mixture thereby increasing burning efficiency in the main combustion chamber.
- Assignee:
- Osaka Gas Co., Ltd. (Japan)
- Patent Number(s):
- A; US 5224449
- Application Number:
- PPN: US 7-786041
- OSTI ID:
- 6212177
- Country of Publication:
- United States
- Language:
- English
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