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Compressed natural gas vehicle injector rail performance testing device and testing method thereof

A technology of compressed natural gas and injection rail, which is applied in the field of detection and can solve problems such as failure to work normally, unstable engine operation, and rare devices

Active Publication Date: 2014-04-16
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to the current relevant reports, there are not many devices for rail injection performance testing, which leads to unstable or even malfunctioning of the engine.

Method used

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  • Compressed natural gas vehicle injector rail performance testing device and testing method thereof

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Such as figure 1 As shown, the present invention includes three parts: a high-speed data measuring and controlling device 1 , a spray rail driver 2 , and a spray rail test unit 3 .

[0023] High-speed data controller includes communication interface 1-1, DC voltage regulator (DC / DC) 1-2, signal processing unit 1-3, digital output unit 1-4, digital input unit 1-5, analog output unit 1- 6. Analog input units 1-7. The output end of the communication interface is connected to the input end of the signal processing unit, the digital output end of the signal processing unit is connected to the input end of the digital output unit, the digital input end of the signal processing unit is connected to the digital input unit signal, and the analog output of the signal processing unit is The terminal is connected to the signal of the analog output unit, and the analog inp...

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Abstract

The invention relates to a compressed natural gas vehicle injector rail performance testing device and a testing method thereof. The testing device comprises a high-speed data measurement and control device, an injector rail driver and an injector rail test unit. The high-speed data measurement and control device comprises a communication port, a direct-current voltage regulator, a signal processing unit, a digital output unit, a digital input unit, an analog output unit, and an analog input unit. The injector rail driver comprises an injector rail drive unit, a coil resistance measuring unit and a coil voltage / current test unit. The injector rail test unit comprises an injector rail, four pressure transmitters, four temperature transmitters and four flow meters. By the compressed natural gas vehicle injector rail performance testing device and the testing method thereof, the pressure, temperature and flow of ports of the injector rail can be accurately measured and can be displayed by a computer in real time.

Description

technical field [0001] The invention belongs to the technical field of detection, and in particular relates to a test device and a test method for rail injection performance of compressed natural gas vehicles. Background technique [0002] The problem of urban air pollution caused by automobile exhaust is becoming more and more serious. The main source of pollution in the ten most polluted cities in the world is vehicle exhaust. In my country, urban air pollution is very serious, and the exhaust pollution of ordinary gasoline and diesel vehicles accounts for more than 70% of urban air pollution, which is one of the main sources of air pollution. Therefore, advocating and promoting environmentally friendly vehicles is of great significance to protecting the environment, and it is also an important measure to respond to the national "energy saving and emission reduction" policy. In recent years, compressed natural gas (CNG) vehicles have developed rapidly around the world, a...

Claims

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Application Information

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IPC IPC(8): F02M65/00
Inventor 谢代梁许鹏刘铁军徐志鹏梁晓瑜
Owner CHINA JILIANG UNIV