Suction system in an engine
AssigneesMitsubishi Denki Kabushiki Kaisha, Mitsubishi Jidosha Kogyo Kabushiki Kaisha
InventorsNorio Endo, Yoshiaki Asayama, Masami Kabuto
Life of this patent
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Abstract
A suction air volume detecting means to be provided in a suction system in an engine, in particular an automotive engine to electrically detect the air volume to be sucked into the engine is mounted within a suction air expansion chamber of the suction system provided to reduce the pulsation of the suctioned air for the purpose that the electrical circuit elements of the suction air volume detecting means, in particular, transistors, etc. are protected from being heated by heat radiated from the engine and from being caused to misoperate by external electrical waves.
Claims6
An air intake assembly for use with an internal combustion engine, which comprises:
- air inlet means comprising an air cleaner casing having an inlet port for receiving air into said assembly from the ambient space around said assembly;
- an expansion chamber completely enclosed within said air cleaner casing and having an inlet port opening directly into said air cleaner casing and an outlet port;
- a duct connected to said outlet port for discharging air from said assembly;
- and
- flow detector means disposed completely within said expansion chamber and having means for detecting the flow rate of air flowing through said expansion chamber inlet port and means connected to said detecting means for producing an electrical signal corresponding to said flow rate;
- said expansion chamber having therein a hollow circumferentially closed elongated segment having one end fitted around said inlet port of said expansion chamber said segment extending from said inlet port of said expansion chamber into the interior of the expansion chamber, whereby the air introduced from said inlet means is directed through said segment into said expansion chamber;
- and said flow rate detector means being an element disposed within said segment and said signal producing means being an electrical circuit means disposed within said expansion chamber for forming said electrical signal.
Dependencies are inferred from the claim text.