Air cleaner for internal combustion engine
AssigneeMahle Filter Systems Japan Corporation
InventorsKatsuhisa Ohta, Yuichi Kato, Takafumi Shibata
Life of this patent
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Abstract
An air cleaner for an internal combustion engine is arranged to reduce intake noise. The air cleaner includes an air cleaner element for cleaning an intake air, and an elastic member for reducing intake noise by utilizing an inside space of the air cleaner. An inside space of the elastic member is in communication with the inside space of the air cleaner through a communication passage. Preferably, a surrounding space formed between the elastic member and a case portion for receiving the elastic member is opened to the outside.
Claims11
An air cleaner for an internal combustion engine, the air cleaner comprising:
- an air cleaner case of synthetic resin;
- an air cleaner filter disposed in the air cleaner case and arranged to partition an inside space of the air cleaner case into a dirty side space and a clean side space, and
- an intake noise reducing device disposed in the air cleaner case, the intake noise reducing device comprising
- a case portion formed integrally with the air cleaner case and structured as a tube extending from a first end opening into the inside space of the air cleaner case to a second end formed with a communication hole opening to an outside of the air cleaner case,
- an elastic member which is received in the case portion and which includes a bellows-shaped circumferential wall extending from a base end which is open to a forward end which is closed;
- a base plate covering the first end of the case portion and holding the base end of the elastic member, and
- a communication pipe extending through the base plate and connecting a volume chamber formed inside the elastic member to the inside space of the air cleaner case.
Dependencies are inferred from the claim text.