A drive system of a hybrid vehicle including an internal combustion engine, a first and second motor-generators, a mode change mechanism, a valve unit, an oil pump driven by electric power, and a microprocessor. The microprocessor is configured to control the valve unit and driving electric power for the oil pump in drive mode including the EV mode and not including the HV mode, so as to stop to supply the hydraulic oil to the mode change mechanism and drive the oil pump by a first driving electric power when first travel mode is selected, while so as to supply the hydraulic oil of a hydraulic pressure lower than the predetermined hydraulic pressure to the mode change mechanism and drive the oil pump by a second driving electric power greater than the first driving electric power when second travel mode is selected.
Hybrid vehicle drive system
2020-03-31
Patent
Electronic Resource
English
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES |