| 摘要 |
<p>A fuel delivery system for purging air from the reservoir of a diaphragm carburetor (32) on an internal combustion engine and for supplying priming fuel to the carburetor air intake (44). A pump (12, 82) is responsive to electrical signals from priming control circuitry to draw fuel through the carburetor reservoir and to feed fuel under pressure to a nozzle (42) positioned at the carburetor air intake. The electronic control circuitry (30) is responsive to an operator (58) for initiating a priming operation and includes a temperature sensor (50) coupled to the engine for controlling duration of the priming operation, and thus the quantity of engine priming fuel, as a function of engine temperature. A second timer (56) is responsive to operator initiation of a priming operation for preventing regeneration of the priming control signal to the pump, and thereby preventing attempting repriming in the event of failure of the engine to start.</p> |
