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US 5,515,825 AGranted
Control mechanism for engine throttle and choke valves
AssigneeSanshin Kogyo Kabushiki Kaisha
InventorsHideto Arai, Takio Ogasawara
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AssigneeSanshin Kogyo Kabushiki Kaisha
InventorsHideto Arai, Takio Ogasawara
Estimating the term…
An engine control mechanism cooperates with both a manual choke operator and a manual throttle operator. The manual throttle operator actuates a throttle control mechanism and a timing advance mechanism. A lost motion connection interconnects the manual throttle operator and the throttle control mechanism. The manual choke operator actuates a choke control mechanism to close the choke valves associated with the engine charge formers. The manual choke also operates the timing advance mechanism and the throttle control mechanism to advance the spark timing and to slightly open the throttle valves beyond an idle position when the choke valves are closed. Operation of the throttle control mechanism via the manual choke operator, however, does not affect the manual throttle operator due to the lost motion connection between the throttle operator and the throttle control mechanism.
A control mechanism of an engine for controlling the operation of a choke valve and a throttle valve of at least one charge former, said control mechanism comprising a throttle control mechanism coupled to the throttle valve and operated by a throttle operator, and a choke control mechanism coupled to the choke valve and operated by a choke operator, said choke operator also being coupled to said throttle control mechanism in a manner opening the throttle valve when closing the choke valve without affecting said throttle operator.
A control mechanism of an engine for controlling the operation of at least one valve of at least one charge former, said control mechanism comprising a valve control mechanism coupled to the valve, said valve control mechanism being operated by both a first operator and a second operator, a first lost motion connection coupling said first operator to said valve control mechanism such that said second operator operates said valve control mechanism without affecting said first operator, and a second lost motion connection coupling said second operator to said valve control mechanism such that said first operator operates said valve control mechanism without affecting said second operator.
A control mechanism of an engine for controlling the operation of a choke valve and a throttle valve of at least one charge former, said control mechanism comprising a choke control mechanism which opens and closes the choke valve, a choke operator actuating said choke control mechanism, a throttle control mechanism having a throttle control plate coupled to the throttle valve to open and close the throttle valve, a throttle operator actuating said throttle control mechanism to move said throttle control mechanism between an idle position and a wide open position, said throttle control mechanism being biased toward said idle position, and a rod extending between said choke control mechanism and said throttle control mechanism, said rod unilaterally transmitting movement of said choke operator to said throttle control mechanism, said throttle control plate and said throttle operator having engaging structures which engage when said throttle operator is moved such that said throttle control mechanism responds to movement of said throttle operator and disengages when said throttle control mechanism is moved by said rod so that said throttle operator is not affected by movement actuated by said rod.
Dependencies are inferred from the claim text.