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Gearbox hydraulic control system and vehicle

A technology of hydraulic control system and gearbox, which is applied in the field of vehicles, can solve problems such as insufficient control precision, and achieve the effect of improving control precision, high efficiency, and fast response time

Inactive Publication Date: 2020-04-07
YIWU GEELY AUTOMATIC TRANSMISSION CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The transmission hydraulic system in the prior art is mostly a low-pressure system, which is used in conjunction with a mechanical oil pump, and there are deficiencies in response time, system leakage, and control accuracy

Method used

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  • Gearbox hydraulic control system and vehicle
  • Gearbox hydraulic control system and vehicle
  • Gearbox hydraulic control system and vehicle

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Embodiment Construction

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0034] figure 1 is a schematic structural diagram of a gearbox hydraulic control system according to an embodiment of the present invention, figure 2 yes figure 1 The schematic flow diagram of the high-pressure oil circuit in the transmission hydraulic control system shown, image 3 yes figure 1 A schematic flow diagram of the low-pressure oil circuit in the hydraulic control system of the transmission shown. Such as Figure 1-3 As shown, among them, figure 2 and image 3 The direction of the arrow in the figure indicate...

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Abstract

The invention provides a gearbox hydraulic control system and a vehicle, and relates to the field of the vehicle. The gearbox hydraulic control system comprises a high-pressure main oil way formed bysequentially connecting an oil tank, a suction filter, an electronic double pump, a high-pressure press filter and an energy accumulator, a first high-pressure branch oil way and a second high-pressure branch oil way which are formed by connecting a first pressure proportional electromagnetic valve and a second pressure proportional electromagnetic valve with the energy accumulator respectively, alow-pressure oil way formed by connecting an oil cooler with the electronic double pump, and a control unit, wherein the first high-pressure branch oil way is connected with a parking system, the second high-pressure branch oil path is connected with a clutch, the control unit is used for controlling the oil outlet amount of the first pressure proportional electromagnetic valve so as to adjust the oil pressure of the first high-pressure branch oil way to achieve parking in or parking out of a parking system and controlling the oil outlet amount of the second pressure proportional electromagnetic valve so as to adjust the oil pressure of the second high-pressure branch oil way to achieve engagement or disengagement of the clutch. The hydraulic system has the advantages that high-precisioncontrol can be achieved, and overall working efficiency of the hydraulic system is improved.

Description

technical field [0001] The invention relates to the field of vehicles, in particular to a transmission hydraulic control system and a vehicle. Background technique [0002] The hydraulic control system is a system that uses oil to drive hydraulic components to perform different functional operations by adjusting the flow and pressure of hydraulic oil through control valves. The control valves of the hydraulic system are structurally divided into two categories: solenoid valves and mechanical valves, and functionally divided into two categories: pilot valves and direct drive valves. Through the cooperation of the pilot valve and the direct drive valve, the hydraulic system can eliminate the pressure fluctuation of the oil pumped by the oil pump, so as to realize the stable control of the transmission system, and also have the advantages of high control precision and fast response time. In addition, the hydraulic system can also realize the lubrication / cooling of hydraulic co...

Claims

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Application Information

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IPC IPC(8): F16H63/08F16H63/30F16H63/34F16H61/00F16D48/02
CPCF16D48/02F16D2048/0203F16D2048/0221F16D2048/0245F16D2048/0287F16D2500/1026F16D2500/3024F16D2500/70406F16H61/0025F16H63/08F16H63/3023F16H63/3483F16H2061/0037
Inventor 贺琦马文星许正功林霄喆
Owner YIWU GEELY AUTOMATIC TRANSMISSION CO LTD
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