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Air-tight test system of cab of vehicle

A test system and cab technology, which is applied in the direction of liquid tightness measurement using liquid/vacuum degree, electrical program control, and by measuring the increase and deceleration rate of fluid, can solve the problems of lack of vehicle air tightness and achieve measurement Convenient communication speed, high measurement accuracy, simple adjustment effect

Inactive Publication Date: 2010-07-07
MILITARY TRANSPORTATION UNIV PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For vehicle manufacturers, there is still no condition for direct inspection of vehicle airtightness

Method used

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  • Air-tight test system of cab of vehicle
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  • Air-tight test system of cab of vehicle

Examples

Experimental program
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Embodiment Construction

[0011] As shown in the figure: a vehicle cab airtightness test system is composed of a control system, a voltage stabilization system, and test components; the control system is composed of an AWS-8248V industrial control computer, a solenoid valve V1, and an electric proportional valve V2; the voltage stabilization system It is composed of compressor, electric proportional valve V3, voltage stabilizing box, pressure sensor P2 and temperature sensor T1. The compressor, the electric proportional valve V2, the voltage stabilizing box and the electric proportional valve V3 are connected in sequence, and the temperature sensor and the pressure sensor are connected to the stabilizing box; the test element consists of an air flow meter F1 and a pressure sensor P1, and the air flow meter F1 is installed on the electric Between proportional valve V3 and solenoid valve V1. The input port of the single-chip microcomputer of the control system is connected with the output port of the tem...

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PUM

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Abstract

The invention relates to an air-tight test system of a cab of a vehicle, which comprises a control system, a pressure stabilizing system and a test element; the control system comprises a single chip computer, an electromagnetic valve V1 and an electric proportional valve V2; the pressure stabilizing system comprises a compressor, an electric proportional valve V3, a pressurizer tank, a pressure sensor P2 and a temperature sensor T1; and the test element comprises an air flowmeter F1 and a pressure sensor P1. The input port of the single chip computer of the control system is connected with the output ports of the temperature sensor, the pressure sensors and the air flowmeter and connected with the electromagnetic valves and the electric proportional valves in a two-way mode. The invention has the following advantages that: (1) the invention adopts two methods which are a constant pressure method and a pressure reduction method to measure the air tightness of the cab of the vehicle, the measurement is convenient and quick, and the measurement accuracy is high; (2) the control system is simple to regulate, and the control process is more accurate and reasonable; and (3) the adaptive vehicle type is extensive.

Description

Technical field: [0001] The invention belongs to an experiment system, in particular to an air tightness test system for a vehicle cab. Background technique: [0002] Airtightness is mainly used to measure the airtight performance of the vehicle cab or body. The vehicle airtight performance can not only be used as a reference for the improved design of the vehicle's local airtightness, but also provide a basis for the improvement of the overall performance of the vehicle. Excessively high airtightness requirements or too low airtightness requirements are unreasonable. High airtightness requirements will inevitably increase the manufacturing cost of the vehicle, and the requirements for the manufacturing process will be more stringent. If the technological level cannot be met, the airtightness test standard requirements will become empty. Conversely, too low air tightness requirements can cause large changes in the pressure inside the car, causing tinnitus of passengers and...

Claims

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Application Information

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IPC IPC(8): G01M3/26G05B19/418
CPCY02P90/02
Inventor 刘瑞林周广猛许翔刘刚董素荣
Owner MILITARY TRANSPORTATION UNIV PLA