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Gearbox hydraulic system

A hydraulic system and gearbox technology, applied in fluid pressure actuation system components, fluid pressure actuation devices, transmission control, etc., can solve the problem of increasing the filter load of the oil outlet filter, excessive work of the oil pump, oil rush, etc. problems, achieve the effect of reducing oil consumption, prolonging service life and improving cooling efficiency

Pending Publication Date: 2021-07-16
KUNTAI VEHICLE SYST CHANGZHOU CO LTD
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] However, with the increasingly stringent national regulations on fuel consumption and emissions of automobiles, special hybrid transmissions are facing higher energy consumption requirements, and the design of the oil supply system in the prior art is not reasonable enough. The oil pump in the oil circuit will grab oil when it is working, which increases the filter load of the oil outlet filter; the unreasonable setting of the structural design of the hydraulic system between the various system functions leads to excessive work of the oil pump, resulting in unnecessary energy consumption , and excessive emissions will eventually affect the use of the gearbox, affecting the performance and service life of each component in the gearbox

Method used

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Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and structural, method, or functional changes made by those skilled in the art according to these embodiments are included within the protection scope of the present invention.

[0026] In the description of the scheme, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", " The orientation or positional relationship indicated by "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of description and simplification of description, rather than indicating or implying that the device or element referred to must have a specific orientation , constructed and operated in a particular orientation and therefore should not be construed...

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Abstract

The invention discloses a gearbox hydraulic system. The gearbox hydraulic system comprises an oil supply subsystem, a main oil pressure control subsystem, a clutch control subsystem, a gear shifting control subsystem and a lubricating and cooling subsystem, the oil supply subsystem is in communication with the lubricating and cooling subsystem through a lubricating oil way, an oil cooler communicated with the lubricating oil way is arranged in the lubricating and cooling subsystem, the output end of the lubricating and cooling subsystem is provided with three branches which are in communication with a first flow control valve, a second flow control valve and a set of throttling holes correspondingly, the first flow control valve is in communication with a first motor, the second flow control valve is in communication with a second motor, and the group of throttling holes are correspondingly communicated with a bearing, a clutch, a gear and a synchronizer. According to the gearbox hydraulic system, lubricating oil is divided into three paths after being cooled by the oil cooler, so that the lubricating and cooling subsystem can accurately supply cooling lubricating oil according to different working conditions and cooling requirements of different parts of the gearbox, the cooling efficiency is improved, and unnecessary oil consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of automobile gearboxes, in particular to a gearbox hydraulic system. Background technique [0002] The so-called hybrid system usually refers to the gasoline-electric hybrid system. A transmission system that can couple the power of the engine and the drive motor in a certain way and realize variable speed and torque is called a hybrid gearbox. Hybrid transmissions can generally be divided into dedicated hybrid transmissions and improved hybrid transmissions based on traditional transmissions integrating hybrid units (drive motors and corresponding control systems). [0003] In the hybrid system, the working mode of the drive motor is extremely flexible: it can drive the vehicle alone to achieve pure electric driving; it can be used as a starting device for the engine to assist the engine to start; it can provide boost to the engine and improve the acceleration ability of the vehicle; When the engine driv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/04F16D48/02F15B21/041F16H57/04
CPCF15B21/041F16D48/02F16D2048/0203F16D2048/0257F16D2048/0287F16H57/0402F16H57/0413F16H61/04
Inventor 朱顺利卞国胜李卫强解建于晓春韩启锋
Owner KUNTAI VEHICLE SYST CHANGZHOU CO LTD
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