Auxiliary chamber type internal combustion engine
AssigneeDenso Corporation
InventorJun Osaka
Life of this patent
Estimating the term…
Abstract
Auxiliary chamber type internal combustion engine has a main combustion chamber and an auxiliary chamber having an injection port through which the main combustion chamber communicates. The auxiliary chamber has a passage sectional area which is smoothly decreased toward the injection port. Further, the engine has a fuel injector injecting a fuel into the auxiliary chamber; an ignition plug igniting the fuel in the auxiliary chamber; and a swirl generating portion swirling a gas in the auxiliary chamber. The swirl generating portion swirls only the gas flowing into the auxiliary chamber from the main combustion chamber.
Claims5
An auxiliary chamber type internal combustion engine, comprising:
- a main combustion chamber;
- an auxiliary chamber having an injection port through which the main combustion chamber communicates, the auxiliary chamber having a passage sectional area which is smoothly decreased toward the injection port;
- a fuel injection valve injecting a fuel into the auxiliary chamber;
- an ignition plug igniting the fuel in the auxiliary chamber;
- and
- a swirl generating portion disposed on an inner surface of the auxiliary chamber from which a gas flowing from the main combustion chamber to the auxiliary chamber separates, wherein
- the swirl generating portion extends spirally in such a manner as to swirl only the gas flowing into the auxiliary chamber from the combustion chamber, and to swirl no gas flowing from the main combustion chamber to the auxiliary chamber.
Dependencies are inferred from the claim text.