Transmission hydraulic system, control method and vehicle

A technology of hydraulic system and control method, applied in transmission control, components with teeth, belts/chains/gears, etc., can solve the problems of low efficiency, unreachable pressure, large energy waste, etc. Economical, energy waste reduction, displacement reduction effect

Active Publication Date: 2018-05-11
GREAT WALL MOTOR CO LTD
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  • Description
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AI Technical Summary

Problems solved by technology

In order to meet the pressure and flow requirements of the hydraulic system, the designed mechanical pump has a relatively large displacement, relatively large energy waste, and low efficiency; (2) only electronic pumps without mechanical pumps
It can only provide small pressure and small flow requirements for the hydraulic system, and some extreme conditions lead to insufficient pressure or insufficient flow
(3) In most automatic transmissions, simple control is achieved through transmission oil temperature and sliding friction power, lacking control precision

Method used

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  • Transmission hydraulic system, control method and vehicle
  • Transmission hydraulic system, control method and vehicle
  • Transmission hydraulic system, control method and vehicle

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Embodiment Construction

[0037] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0038] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0039] figure 1 is a flow chart of a control method of a transmission hydraulic system according to an embodiment of the present invention.

[0040] Such as figure 1 shown, combined with figure 2 , the method for controlling a transmission hydraulic system according to an embodiment of the present invention, wherein the transmission hydraulic system is driven by an electronic pump to supply oil, and the transmission refers to an automatic transmission. Therefore, the transmission hydraulic system is an automatic transmission hydraulic system, also known as an automatic transmission hydraulic control system. Control methods include:

[0041] S101: Obtain the demand of total pressure...

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Abstract

The invention provides a transmission hydraulic system, a control method and a vehicle. The control method comprises the steps of obtaining the requirement of total pressure for the flow and the requirement of total cooling lubricating for the flow in the hydraulic system; judging whether the requirement of total pressure for the flow is larger than zero or not; if yes, controlling an electronic pressure to supply oil to a pressure loop, and if not, controlling the electronic pump to supply oil to the lubricating loop; when the electronic pump supplies oil to the lubricating loop, according tothe clutch cooling lubricating needs, determining the flow, and according to a correction coefficient, correcting the flow. The method has the beneficial effects of being low in energy consumption and high in fuel economy, safety and reliability are achieved, and the vehicle taking comfort is improved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a transmission hydraulic system, a control method and a vehicle. Background technique [0002] At present, there are three situations in automatic transmissions: (1) Most of them do not have electronic pumps, but only mechanical pumps. In order to meet the pressure and flow requirements of the hydraulic system, the designed mechanical pump has a relatively large displacement, a relatively large energy waste, and low efficiency; (2) There are only electronic pumps but no mechanical pumps. Only small pressure and small flow requirements can be provided to the hydraulic system, and some extreme conditions lead to insufficient pressure or insufficient flow. (3) In most automatic transmissions, the simple control is realized through transmission oil temperature and sliding friction power, which lacks control precision. Contents of the invention [0003] In view of this, the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/00F16H61/02
CPCF16H61/0028F16H61/0267F16H2061/0037
Inventor 王建华曹永宏刘化雪王超赵运珠戴良顺刘婧张立浦曲海军
Owner GREAT WALL MOTOR CO LTD
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