Hydraulic control method and system of hybrid power gearbox

Abstract

The invention discloses a hydraulic control method and system of a hybrid power gearbox. The hydraulic control system of the hybrid power gearbox comprises a first hydraulic actuating mechanism, at least one second hydraulic actuating mechanism, oil pumps and driving systems thereof and a reversing valve, wherein the first hydraulic actuating mechanism is used for performing parking unlocking andparking actions; the oil pumps input hydraulic oil into the reversing valve; the reversing valve selectively transfers the hydraulic oil to the first hydraulic actuating mechanism to perform the parking unlocking action or the parking action, or selectively transfers the hydraulic oil to the second hydraulic actuating mechanisms. According to the hydraulic control method and system of the hybrid power gearbox, a parking actuating mechanism is integrated into a clutch actuating mechanism or a cooling actuating mechanism, and the oil pressure control unlocking of the parking actuating mechanismis carried out through the oil pump of the clutch actuating mechanism or the cooling actuating mechanism; and the structure is compact and high in integrated level, the required assembly space is small, the number of varieties of parts of the system is small, the hydraulic control method is simple, and the integrated level of the system is greatly improved.

Description

technical field [0001] The invention relates to the technical field of gearbox control systems, in particular to a hydraulic control method and system for a hybrid gearbox. Background technique [0002] Hydraulically controlled automatic parking control mechanism, such as CN2015207626478 records a hydraulic control system of a gearbox, which requires an oil supply system to deliver hydraulic oil to various subsystems including clutch, parking, etc., and then controls the hydraulic oil through valves To realize the actions of each branch in the subsystem, the structure is complex, the control system has many parts, the control strategy is complicated, the cost is high, and the integration is low; 201710373561X also records a hydraulic control system of the gearbox, which requires The oil supply system transports hydraulic oil to various subsystems including clutch, parking, etc., and selects the oil circuit through the reversing valve of the subsystem to realize the action of...

AI Technical Summary

Problems solved by technology

[0002] Hydraulically controlled automatic parking control mechanism, such as CN2015207626478 records a hydraulic control system of a gearbox, which requires an oil supply system to deliver hydraulic oil to various subsystems including clutch, parking, etc., and then controls the hydraulic oil through valves To realize the actions of each branch in the subsystem, the structure is complex, the control system has many parts, the control strategy is complicated, the cost is high, and the integration is low; 201710373561X also records a hydraulic control system of the gearbox, which requires The oil supply system transports hydraulic oil to various subsystems including clutch, parking, etc., and selects the oil circuit through the reversing valve of the subsystem to realize the action of each subsystem. It also faces complex structures, many parts, and complex control strategies. , the problem of high cost

[0003] Therefore, how to design a gearbox hydraulic control method and system with high integration, few components and simple control strategy is a problem at present.

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