Patent ID: 6881170

Claim:
A vehicle with an automatic engine stop/restart function, comprising: an engine; an automatic transmission having an oil pump driven in synchronism with the engine to supply an oil pressure to the automatic transmission; an oil pressure controller to hold the oil pressure in the automatic transmission during an automatic stop of the engine; and a control system configured to: stop the engine automatically when an automatic engine stop condition is satisfied; restart the engine automatically in a first mode when an automatic engine restart condition is satisfied; determine whether the oil pressure in the automatic transmission becomes lower than a predetermined value during the automatic stop of the engine; shift the automatic transmission into a neutral state when the oil pressure in the automatic transmission becomes lower than a predetermined value during the automatic stop of the engine; restart the engine in a second mode after the automatic transmission is shifted to the neutral state; and shift the automatic transmission into a drive state after the oil pressure in the automatic transmission is increased to the predetermined value by the oil pump driven in synchronism with the engine.