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A method for adjusting the output pressure of a load-sensing valve during automobile braking

A technology of output pressure and automobile braking, applied in the directions of brakes, brake components, control valves and air release valves, etc., can solve the problems of limited adjustment length and ineffectiveness, and achieve a clear algorithm process, improve calculation accuracy, and facilitate The effect of modeling and simulation

Active Publication Date: 2021-02-19
NANJING NAVECO AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limited adjustment length, this method still cannot work in many cases, and it is necessary to go back and modify the design parameters

Method used

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  • A method for adjusting the output pressure of a load-sensing valve during automobile braking
  • A method for adjusting the output pressure of a load-sensing valve during automobile braking

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In the method for adjusting the output pressure of the load-sensing valve during the braking process of the automobile provided by this embodiment, the structure of the load-sensing valve involved is as follows: figure 1 As shown, including the valve body 6, the pin shaft 1 placed in the valve body 6, the torsion bar 2, the spool valve piston 3, the spool valve spring 4, the sealing ring 5 sleeved on the spool valve piston 3, and the valve body 6 End caps 7 on the output side.

[0028] The method for testing the load-sensing valve by simulating the braking process of the automobile provided in this embodiment, the finishing process is as follows figure 2 As shown, follow the steps below:

[0029] a. Load-sensing valve self-inspection, measuring the diameters d and D of the input and output ends of the spool valve piston, calculating the slope of the static characteristic curve, and calculating the initial static characteristic ratio of the load-sensing valve according...

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PUM

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Abstract

The invention discloses a method for adjusting the output pressure of a load sensing valve during automobile braking. The load sensing valve comprises a valve body, a pin shaft, a torsion rod, a sliding valve piston, a sliding valve spring, a sealing ring and an end cover, wherein the pin shaft, the torsion rod, the sliding valve piston and the sliding valve spring are arranged in the valve body, the sliding valve piston is connected to the sealing ring in a sleeving manner, and the end cover is arranged at the output end of the valve body; according to the method, continuous increasing of the input pressure during constant-speed brake is simulated to study changes of the output pressure so as to test the performance of the load sensing valve; and in the whole process, an experimenter can monitor and judges the mode conversion condition in real time, and therefore the whole experiment calculation precision can be necessarily and directly improved.

Description

technical field [0001] The invention relates to a method for adjusting a load-sensing valve, in particular to a method for adjusting the output pressure of a load-sensing valve during automobile braking, and belongs to the technical field of automobile braking. Background technique [0002] For trucks, the load-sensing valve is a very common pressure adjustment component. The load-sensing proportional valve is connected in series in the rear actuation pipeline of the hydraulic brake circuit. Dead, after the front and rear actuation pipeline pressures increase synchronously to a certain value, the growth of the rear actuation pipeline pressure will be automatically controlled, that is, even if the increase of the rear actuation pipeline pressure is smaller than the front actuation pipeline pressure increment. The output pressure of the load-sensing proportional valve is its most important performance index, and its performance plays a decisive role in the braking performance...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T15/18
CPCB60T15/18
Inventor 杨祥利郭福祥
Owner NANJING NAVECO AUTOMOBILE CO LTD
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