ENGINE STARTING SYSTEM

摘要

PROBLEM TO BE SOLVED: To prevent an engine from entering into cranking impossibility after transition to idling stop when a battery comes short of capacity. SOLUTION: The terminal voltage of a battery is detected, and whether the battery makes cranking possible or not after engine stop is discriminated. In the case of cranking impossibility, corresponding warning is carried out. Possible or impossible cranking is discriminated after presuming discharge voltage during cranking by specifying any of a linear relationship group between current and voltage is accordance with current and voltage right before cranking while previously realizing linear relationships between current and voltage in various charged conditions in accordance with discharge voltage by preliminarily discharging at an optional current.