Resonator for internal combustion engines
AssigneeNippondenso Co., Ltd.
InventorsYasuhiko Fukami, Toshiichi Sawada, Shuzo Kinkori
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Abstract
A resonator for internal combustion engines having intake and exhaust pipes connected with a cylinder of said internal combustion engines comprising resonator means for absorbing resonant noises generated in said engines, a plurality of tubular connecting members disposed between said resonator means and one of said pipes for forming a continuous passage from said one pipe to said resonator means, and switch means connected with said tubular connecting means for changing said tubular connecting members in accordance with operational conditions of said engines to absorb said noises from said engines.
Claims13
A resonator for an internal combustion engine having intake and exhaust pipes connected with a cylinder of said internal combustion engine, said resonator comprising:
- resonator means defining a predetermined closed volume for absorbing resonant noises generated in said engine,
- a tubular connecting member means disposed between said resonator means and one of said pipes for forming a continuous passage from said one pipe to said resonator means, said tubular connecting member means including a tubular stem connecting to said one pipe at an opening thereof and a plurality of tubular branches extending from an outer surface of said tubular stem internally of said resonator means, the lengths of said tubular branches being different from each other, and
- switch means connected with said tubular connecting member means for changing as between said different length tubular branches in accordance with operational conditions of said engine to absorb said noises from said engine.
A resonator for an internal combustion engine having intake and exhaust pipes connected with a cylinder of said internal combustion engine, said resonator comprising:
- resonator means defining a predetermined closed volume for absorbing resonate noises generated in said engine,
- a plurality of tubular connecting members disposed between said resonator means and at least the intake pipe of one of said pipes for forming a plurality of selectably open continuous passages from said one pipe to said resonator means, and
- swtich means connected with said tubular connecting members for changing which of said continuous passages is open, in accordance with operational conditions of said engine to absorb said noises from said engine.
Dependencies are inferred from the claim text.