Abstract: A driving control device of a vehicle including an automatic transmission with a hydraulic control device which hydraulically controls an engagement of the frictional engagement element, a mechanical oil pump which is driven by the engine and supplies hydraulic pressure to the hydraulic control device and an electric oil pump which supplies hydraulic pressure to the hydraulic control device and a motor connected to the mechanical oil pump and transmitting the driving force to the automatic transmission, wherein the electric oil pump supplies oil to the hydraulic control device at an engine automatic stopping control time at which the driving of the engine is automatically stopped after the vehicle stops and a predetermined condition is established and the motor is driven so that said mechanical oil pump supplies the oil to the hydraulic control device during the engine automatic stopping control at a time when the electric oil pump can not be driven.

Abstract: A vehicle control apparatus including an engine, an automatic transmission, a hydraulic servo, a mechanical oil pump, an electric oil pump and a controller that controls driving of the electric oil pump and generates a standby pressure supplied to the hydraulic servo based upon a driving state of the mechanical oil pump, wherein the standby pressure is set less than a line pressure generated based upon driving the mechanical oil pump during idling and equal to or greater than an engagement starting pressure by which the friction engagement element starts transmitting a torque.

Abstract: A driving control device of a vehicle including an automatic transmission with a hydraulic control device which hydraulically controls an engagement of the frictional engagement element, a mechanical oil pump which is driven by the engine and supplies hydraulic pressure to the hydraulic control device and an electric oil pump which supplies hydraulic pressure to the hydraulic control device and a motor connected to the mechanical oil pump and transmitting the driving force to the automatic transmission, wherein the electric oil pump supplies oil to the hydraulic control device at an engine automatic stopping control time at which the driving of the engine is automatically stopped after the vehicle stops and a predetermined condition is established and the motor is driven so that said mechanical oil pump supplies the oil to the hydraulic control device during the engine automatic stopping control at a time when the electric oil pump can not be driven.

Abstract: The clutch oil pressure (PC1) supplied to a hydraulic controller of an automatic transmission is detected. If it is detected that the clutch oil pressure (PC1) is less than or equal to a first threshold value PA when a first oil pump cooperative with a drive power source is to stop, the second oil pump is driven. Therefore, after the oil pressure (for example, PY) remaining from the first oil pump has decreased, the second oil pump is driven, and an oil pressure (PX) needed for the hydraulic control of friction engagement elements is maintained. If it is detected that the clutch oil pressure (PC1) is greater than or equal to a second threshold value (PB) when the first oil pump is to be driven, the second oil pump is stopped. Therefore, the second oil pump is stopped when the oil pressure provided by the first oil pump rises to such a level that the oil pressure (PX) can be secured. Thus, the load on the second oil pump is reduced so as to allow it to be reduced in size.

Abstract: The present invention provides a drive control apparatus for driving an electric oil pump by supplying it with a predetermined operating voltage so as to decrease a load on the electric oil pump. The drive control apparatus detects a clutch hydraulic pressure supplied to the hydraulic control apparatus for the automatic transmission and drives the electric oil pump so that a required hydraulic pressure is maintained. In this case, the drive control apparatus detects an oil temperature of the hydraulic control apparatus for the automatic transmission, controls the operating voltage of the electric oil pump based on the oil temperature, and supplies the operating voltage to th electric oil pump. Accordingly, the hydraulic pressure supplied from the electric oil pump maintains the hydraulic pressure required for the hydraulic control of the automatic transmission and prevents supply of a greater hydraulic pressure than is required.