Hybrid power gearbox hydraulic system and vehicle

Abstract

The invention discloses a hybrid power gearbox hydraulic system and a vehicle, and relates to the field of vehicles. In the hybrid power gearbox hydraulic system, a hydraulic power source unit comprises a first oil pump, a second oil pump and a motor, the first oil pump and the second oil pump are coaxially connected, and the motor is connected with the first oil pump or the second oil pump; and an oil outlet of the first oil pump is connected with a main oil way unit, and an oil outlet of the second oil pump is connected with a cooling lubrication flow adjusting unit. A clutch pressure adjusting unit and a gear shifting pressure adjusting unit are connected with the main oil way unit, the gear shifting pressure adjusting unit is connected with a gear shifting direction adjusting unit, andthe gear shifting direction adjusting unit is connected with a gear shifting executing element. Separation of a main oil way and a cooling lubricating oil way can be achieved, and energy loss causedby pressure increase and then pressure reduction of cooling lubricating oil and excessive waste of pump oil at a high rotating speed are avoided.

Description

technical field [0001] The invention relates to the field of vehicles, in particular to a hydraulic system of a hybrid transmission and a vehicle. Background technique [0002] In the prior art, the hydraulic power source system includes a mechanical pump and an electric pump. The mechanical pump is coupled with the engine or motor through the driving gear welded to the main hub of the double clutch. The speed is consistent with the engine or motor. When the engine or motor rotates, the mechanical pump is The main oil circuit supplies oil, builds up the main oil circuit pressure and provides cooling and lubricating flow. The electric pump is driven by the electric pump motor. When the motor is required to drive the engine to start and when the system temperature is high and the flow of cooling and lubrication needs to be supplemented, the electric pump will work. [0003] Since the cooling and lubricating flow in the prior art is mainly taken from the main oil circuit throu...

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Problems solved by technology

[0004] The purpose of the present invention includes, for example, to provide a hybrid transmission hydraulic system and vehicle, which can realize the separation of the main oil circuit and the cooling lubricating oil circuit, and solve the problem caused by the prior art that the cooling lubricating oil is first pressurized and then depressurized. The problem of energy loss; at the same time, the decoupling of the oil pump speed and the engine or motor speed is realized, which solves the problem of energy waste caused by excessive pumping oil of the mechanical pump at high speed

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