| 摘要 |
PURPOSE: A starting control method of FFV engine is provided to enable to start an engine even though starting a normal engine is hard, thereby improving the reliability and the productivity of a vehicle. CONSTITUTION: A starting control method of FFV engine comprises: an emergency determining step(S10) for determining whether an emergency starting is necessary or not based on the number of starting trials; a criterion determining step(S20) for determining a current ethanol concentration learning value is a predetermined concentration value or not when determined that emergency starting is necessary or not; a concentration swing step(S30) for trying to start an engine according to a result of performing the criterion determining step; and a starting determining step(S40) for determining the engine is started or not by a result of performing the concentration swing step. [Reference numerals] (AA) Start; (CC) Set an ethanol concentration in a range of concentration less than 75% and try to start an engine; (DD) Set an ethanol concentration in a range of concentration over 75% and try to start an engine; (EE) End; (S10) Engine fails to start during three times of attempts?; (S20) Current ethanol concentration learning value >= 75% ?; (S40) Engine started?; (S51) Reset the ethanol concentration in the range of concentration over 75% and try to start the engine; (S52) Reset the ethanol concentration in the range of concentration less than 75% and try to start the engine; (S60) Learn the ethanol concentration |
