Fuel supply system for engine warm-up
AssigneeWalbro Corporation
InventorsHiroki Ogasawara, Tsuyoshi Watanabe
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Abstract
In at least one implementation, a method of operating a combustion engine, includes determining a temperature equal or related to a temperature of an engine at an engine start and comparing the determined temperature to a temperature threshold, determining if an engine operating condition exceeds an engine threshold within a threshold time after the engine was started, and if the determined temperature is below the threshold temperature and the engine operating condition remains above the engine threshold and the threshold time has not passed, providing an enriched fuel and air mixture to the engine.
Claims20
A method of operating a combustion engine, comprising:
- determining a temperature equal or related to a temperature of an engine at an engine start and comparing the determined temperature to a temperature threshold;
- determining if an engine operating condition exceeds an engine threshold within a threshold time after the engine was started;
- and
- if the determined temperature is below the threshold temperature and the engine operating condition remains above the engine threshold and the threshold time has not passed, providing an enriched fuel and air mixture to the engine.
A method of operating a combustion engine, comprising:
- determining a temperature equal to or related to a temperature of an engine at an engine start and comparing the determined temperature to a temperature threshold;
- determining if an engine speed exceeds an engine speed threshold within a threshold time after the engine was started;
- and
- if the determined temperature is below the threshold temperature and the engine speed is above the engine speed threshold and the threshold time has not passed, providing an enriched fuel and air mixture to the engine.
Dependencies are inferred from the claim text.