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air pressure regulator

A technology of air pressure adjustment and pressure difference, which is applied in the direction of measuring devices, machine/structural component testing, engine testing, etc., and can solve problems such as energy consumption, high test cost, and test time consumption

Active Publication Date: 2019-12-10
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Controlling the air pressure in the pipeline by manually controlling the opening of the valve has the following disadvantages: because the valve installation position must be close to the engine intake pipeline, oil, water, electricity, gas, high-speed rotating parts and high-temperature burns will threaten the operator's safety during engine operation. Personal safety; the efficiency of adjusting the valve in the shutdown state is low. Every time the adjustment is completed, it is necessary to run the engine and stabilize it for 30 minutes to confirm. If it is adjusted 5 times to reach the set value, it will take 150 minutes of test time; the test cost of manual adjustment is relatively high. Consumes energy and manpower

Method used

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Embodiment 1

[0025] figure 1 Shown is a schematic structural diagram of an air pressure adjustment device provided in Embodiment 1 of the present invention. The air pressure adjustment device provided in this embodiment is connected to the engine of a vehicle. The air pressure adjustment device includes:

[0026] The electric valve body 10 connected in the intake pipeline of the engine is used to control the intake passage cross-sectional area of ​​the intake pipeline; the position measurement module 20 arranged on the electric valve body 10 is used to measure the opening angle of the electric valve body 10 , and generate a position signal according to the opening angle of the electric valve body 10 and output it; the pressure difference measurement module 30 is used to measure the pressure difference before and after the gas in the intake pipeline passes through the electric valve body 10, and output the pressure difference information; the control module 40 , used to obtain the working c...

Embodiment 2

[0031] figure 2 Shown is a schematic structural diagram of an air pressure regulating device provided in Embodiment 2 of the present invention. This embodiment is based on the above-mentioned embodiment. Optionally, the air pressure regulating device further includes: a pulse width modulation PWM module 60, respectively processing The module 50 is electrically connected to the electric valve body 10 , and is used to generate a PWM signal to control the opening angle of the electric valve body 10 under the control of the processing module 50 .

[0032] The control method of PWM (Pulse Width Modulation, pulse width modulation) refers to the on-off control of the switching device of the inverter circuit, so that the output terminal obtains a series of pulses with equal amplitude, and these pulses are used to replace the sine wave or the required waveform. That is, multiple pulses are generated in half a cycle of the output waveform, so that the equivalent voltage of each pulse ...

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Abstract

The embodiment of the invention discloses a gas pressure regulation device which is connected with an engine of a vehicle. The device comprises: an electric valve body connected in a gas inlet pipeline of an engine and configured to control the gas inlet sectional area of the gas inlet pipeline; a position measurement module configured to measure the opening angle of the electric valve body and generate position signals for output; a pressure difference measurement module configured to measure pressure difference prior to and after gas flowing through the electric valve body in the gas inlet pipeline and output the pressure difference information; a control module configured to control work conditions of the engine to determine corresponding gas pressure information and generate a corresponding control instruction for output; and a processing module configured to receive and respond to a control command issued by the control module, and control the position of the electric valve body according to the position signals and the pressure difference information. The gas pressure regulation device achieves automatic regulation of gas pressure of the gas inlet pipeline of the engine to allow the device to be more intelligent so as to improve the economic efficiency, reduce the manpower and material waste and save the cost.

Description

technical field [0001] Embodiments of the present invention relate to engine control technology, and in particular to an air pressure regulating device. Background technique [0002] During the engine bench test, in order to simulate the boundary conditions of the vehicle operation, it is often necessary to control the air pressure of the engine pipeline. In the prior art, a manual throttling valve is usually installed in front of the pipeline, and the pipeline air pressure is controlled by manually controlling the opening of the valve. [0003] Manually controlling the opening of the valve to control the air pressure in the pipeline has the following disadvantages: because the valve must be installed close to the engine intake pipeline, oil, water, electricity, gas, high-speed rotating parts and high-temperature burns will threaten the operator's safety during engine operation. Personal safety; the efficiency of adjusting the valve in the shutdown state is low. Every time ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M15/02G05B11/42
CPCG01M15/02G05B11/42
Inventor 单海彭赵兴亮黄继轩张道程
Owner WEICHAI POWER CO LTD