Patent ID: 8118705
Filing Date: 2012-02-21
Classification: B60K,B60W,B60Y,F16H,Y02T,Y10T

Abstract:
1. A control system of a vehicle including an engine, and an automatic transmission operable to establish a gear position selected from a plurality of gear positions, according to running conditions of the vehicle, by changing engaged or released states of friction devices using a hydraulic pressure supplied from a hydraulic pressure source, said automatic transmission including a fluid coupling having an input shaft coupled to the engine and a shifting mechanism having an input shaft coupled to the fluid coupling, said hydraulic pressure source including a reservoir in which a hydraulic fluid is stored, a supply device that supplies the hydraulic fluid stored in the reservoir to the friction devices, using power of the engine, and a flow path through which the hydraulic fluid stored in the reservoir flows into the supply device, said control system comprising: a rotational speed detector configured to detect a rotational speed of an input-side rotary shaft of the shifting mechanism; and a controller configured to control the vehicle so that, when an execution condition that a selected one of said plurality of gear positions set according to the running conditions of the vehicle is maintained, and the rotational speed of the input-side rotary shaft has increased to be higher than a rotational speed corresponding to the set gear position, is satisfied, the vehicle is brought from running conditions under which the execution condition is satisfied, into running conditions that will eliminate a state in which air is present in the hydraulic fluid supplied from the supply device.