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Exhaust gas recirculation valve and cooler combined test device

An exhaust gas recirculation valve and exhaust gas recirculation technology are applied in the direction of measuring devices, testing of machines/structural components, instruments, etc., which can solve problems such as lack of core technologies, avoid repeated disassembly and assembly, reduce the number of valves, install and test and The effect of easy removal

Inactive Publication Date: 2008-12-17
ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, domestic EGR valves and EGR coolers are mainly produced in imitation, lacking their own core technology

Method used

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  • Exhaust gas recirculation valve and cooler combined test device
  • Exhaust gas recirculation valve and cooler combined test device
  • Exhaust gas recirculation valve and cooler combined test device

Examples

Experimental program
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Effect test

Embodiment Construction

[0021] Such as figure 1 As shown, the outlet of the vacuum degree generating and adjusting device 1 in the exhaust gas recirculation valve and cooler combined test device is connected to the vacuum inlet of the exhaust gas recirculation valve 4 to be tested, and the inlet 5 of the first three-way valve is connected to the high-temperature exhaust gas The outlets of the generating and regulating device 2 are connected, the first outlet 6 of the first three-way valve is connected to the first inlet 8 of the second three-way valve, and the outlet 9 of the second three-way valve is connected to the inlet of the exhaust gas recirculation valve 4 to be tested. The outlet of the exhaust gas recirculation valve 4 is connected to the inlet 11 of the third three-way valve, the second outlet 13 of the third three-way valve is connected to the first inlet 14 of the first four-way valve, and the second outlet 16 of the first four-way valve is connected to The inlet of the exhaust gas recir...

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Abstract

The invention discloses a test device for combining an exhaust gas recirculation valve with a cooler. Through a first three-way valve, a second three-way valve and a first four-way valve, a high-temperature gas device not only can be singly connected with a recirculation valve for exhaust gas to be tested, but also can be separately connected with a recirculation cooler for the exhaust gas to be tested, or can be jointly connected with the recirculation valve for the exhaust gas to be tested and the recirculation cooler for the exhaust gas to be tested; then through a second four-way valve and a fourth three-way valve, a high-temperature gas device is connected to a flow meter for measuring the flow. Meanwhile, two additional switch valves are installed in a pipeline, so as to control the precedence sequence during the combination measurement of the recirculation valve for the exhaust gas to be tested and the recirculation cooler for the exhaust gas to be tested. The test device can be used for not only separately testing the flow characteristic of the recirculation valve for the exhaust gas to be tested, but also separately testing the flow characteristic of the recirculation cooler for the exhaust gas to be tested, and meanwhile jointly testing the recirculation valve for the exhaust gas to be tested and the recirculation cooler for the exhaust gas to be tested.

Description

technical field [0001] The invention relates to a test device for a vehicle internal combustion engine component, in particular to a combined test device for an exhaust gas recirculation valve and a cooler. Background technique [0002] With the world's emphasis on environmental issues and the increasingly stringent emission standards for motor vehicles at home and abroad, exhaust gas recirculation (EGR) is used to control NO x An effective measure of emissions, more and more attention has been paid. The exhaust gas recirculation valve is the most critical actuator in this technology, while the exhaust gas recirculation cooler is an important technology to improve the efficiency of exhaust gas circulation. [0003] Exhaust gas recirculation technology has become an important internal purification measure for foreign automobile engines to meet emission standards. However, in China, the exhaust gas recirculation technology started relatively late, and it can only be expanded...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M15/04G01M19/00G01M99/00
Inventor 韩松武亚娇张宇黄瑞俞小莉陆国栋陈子强夏立峰张守都安晓平
Owner ZHEJIANG UNIV
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