Fuel increase system for engine
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsGenjiro Hamakawa, Kenji Naito
Life of this patent
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Abstract
An acceleration pump delivers additional fuel to both the main intake passage and the auxiliary intake passage of an internal combustion engine, to facilitate cold starting. In such an engine, each main combustion chamber is in communication with an auxiliary combustion chamber, respectively. Coordinated means are provided for operating said acceleration pump and throttle valves in said intake passages. Communication between the acceleration pump and the main intake passage remains open at all times, but a passageway connecting the acceleration pump and the auxiliary intake passage is closed except when the ambient temperature is low. Closure of the connecting passageway is effected automatically or in coordination with operation of the choke valve for the main intake passage.
Claims6
For use with an internal combustion engine having an auxiliary combustion chamber in communication with each main combustion chamber, respectively, and having a main carburetor intake passage for supplying a lean mixture to each main combustion chamber and an auxiliary carburetor intake passage for supplying a rich mixture to each auxiliary combustion chamber, the improvement comprising, in combination:
- an acceleration pump, acceleration nozzles, one opening into each carburetor intake passage, respectively, passageways connecting the pump to each nozzle, a control valve in the passageway connecting the pump to the nozzle in the auxiliary carburetor intake passage, the other passageway being open and unrestricted, and means for opening said control valve when the ambient temperature is low and for closing said control valve when the ambient temperature is high.
Dependencies are inferred from the claim text.