High-temperature test box for EGR valves
A high-temperature test chamber, EGR valve technology, applied in the testing of mechanical components, testing of machine/structural components, measuring devices, etc., can solve problems such as the inability to simulate the high temperature environment of the engine, to ensure the high quality rate of the factory, easy to achieve , the effect of simple structure
Active Publication Date: 2015-05-20
WUXI LONGSHENG TECH
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Problems solved by technology
Existing experimental equipment for high-temperature tests on EGR valves can only simulate the operating environment of high-temperature exhaust gas, but cannot simulate the high-temperature environment during engine operation
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[0016] The present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings.
[0017] A kind of EGR valve high temperature test box, such as figure 1 As shown, it includes a box body 1 with a box door 2 and a control device. The internal structure of the box is as figure 2 As shown, the upper part is provided with a closed laboratory 16, and the bottom of the laboratory in the box is provided with a fan 10, and the air inlet of the fan 10 is provided with a coarse air filter 11, which is used to filter the air and prevent impurities in the air from entering the fan. Inside, affect the normal operation of the blower fan; the air outlet of the blower fan 10 communicates with the laboratory through the small air intake pipe 12 and the large air intake pipe 9 respectively.
[0018] Wherein: the position where the small air intake pipe 12 stretches into the laboratory is provided with a small heating device 13, which ...
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The invention discloses a high-temperature test box for EGR valves. The high-temperature test box for the EGR valves comprises a box body, wherein a laboratory is arranged on the upper portion of the interior of the box body, a fan is arranged below the laboratory and is arranged in the box body, an air outlet of the fan is communicated with the laboratory through a small air inlet pipe and a big air inlet pipe, a small heating device is arranged at the position, extending to the interior of the laboratory, of the small air inlet pipe, a big heating device is arranged at the position, extending to the interior of the laboratory, of the big air inlet pipe, the outlet end of the big air inlet pipe is communicated with an air inlet of an EGR valve to be detected, an exhaust pipe is further arranged in the box body, an exhaust gas temperature sensor is arranged at the outlet end of the big air inlet pipe, an environment temperature sensor is arranged on the side wall of the laboratory, the exhaust gas temperature sensor and the environment temperature sensor are connected with a control device, and the output end of the control device is connected with the big heating device and the small heating device. The high-temperature test box for the EGR valves can simultaneously simulate the engine high-temperature environment and the high-temperature exhaust gas operation environment of working of the EGR valves, and further ensures the factory merit factor of the EGR valves.
Description
technical field [0001] The invention relates to testing equipment in the technical field of engine exhaust emission control devices, in particular to equipment used for EGR valve testing. Background technique [0002] The engine exhaust gas recirculation system (EGR system for short) is used to reduce the emission of nitrogen oxides in the exhaust gas. Its operation mode is that when the engine is running under load, the EGR valve is opened, and a small amount of exhaust gas discharged from the engine is returned to the intake manifold. And enter the cylinder together with the fresh combustible mixture for re-combustion. The principle is to use the large amount of CO contained in the exhaust gas 2 , while CO 2 It cannot burn but can absorb a large amount of heat, reducing the combustion temperature of the mixture in the cylinder, thereby reducing the generation of NOx and reducing exhaust pollution. The EGR valve in the EGR system is mainly used to adjust and control the ...
Claims
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IPC IPC(8): G01M13/00
Inventor 邓树平
Owner WUXI LONGSHENG TECH