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Composite oil injector oil injection law measuring device and measuring method

A fuel injection law and measuring device technology, which is applied in the field of measuring devices for testing the fuel injection law of engine injectors, can solve problems such as the distortion of the fuel injection law curve, and the measurement results are greatly affected by the vibration of the piston, and achieve the effect of accurate measurement

Active Publication Date: 2017-08-18
HARBIN ENG UNIV
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Problems solved by technology

The problem with this method is that the measurement results are greatly affected by the vibration of the piston, resulting in distortion of the fuel injection curve.

Method used

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  • Composite oil injector oil injection law measuring device and measuring method
  • Composite oil injector oil injection law measuring device and measuring method
  • Composite oil injector oil injection law measuring device and measuring method

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Embodiment Construction

[0033] The present invention will be described in detail below with examples in conjunction with the accompanying drawings.

[0034] The measuring device for the injection regularity of the compound injector of the present invention mainly comprises: a measuring instrument main body 1 and a temperature sensor 5 installed on the measuring instrument main body, a pressure sensor 6, an injector adapter 7, an injector 8, a constant volume Chamber drain solenoid valve 13, piston chamber drain solenoid valve 14, displacement sensor 21, etc. The main body of the measuring instrument also includes a constant volume chamber 2, a constant pressure gas source interface 3, a piston 4, a piston chamber, etc. The piston type is divided into a piston chamber upper chamber 11 and a piston chamber lower chamber 12 due to the piston barrier. The fuel injector is fixed on the constant volume chamber through the fuel injector adapter 7 and the fuel injector pressure plate 9, and the fuel injectio...

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Abstract

The invention provides a composite oil injector oil injection law measuring device and a measuring method. The measuring device mainly comprises an oil injector adapter, a volume fixing chamber, a volume fixing chamber oil drainage solenoid valve, a piston chamber, a piston, a piston chamber oil drainage solenoid valve, a pressure sensor, a temperature sensor, a displacement sensor and the like. The measuring device is further provided with an electronic control system, and the electronic control system comprises a controller, a data collecting card and a computer. According to the measuring method, an oil injection law curve is obtained through a volume method, accurate circulating oil injection mass is obtained through a displacement method, and therefore an oil injection law is corrected, and the oil injection law of an oil injector is obtained more accurately. Oil injection law testing can be carried out, the advantages of the volume method and the displacement method are combined, the oil injection law can be measured more accurately, and the composite oil injector oil injection law measuring device and the measuring method can be applied to the research and development work of engines.

Description

technical field [0001] The invention relates to a measuring device and a measuring method for testing the fuel injection regularity of an engine fuel injector. Background technique [0002] Fuel injection is an important topic in engine development. The amount of fuel injected and the regularity of fuel injection directly affect the overall performance of the engine. Appropriate fuel injection rules can improve the power, economy and reliability of the engine, prolong the life of the engine, and reduce the emission of pollutants. [0003] At present, there are many measurement methods for fuel injection regularity of engine injectors, such as honeycomb method, momentum method, displacement method, long tube method and volumetric method. [0004] An effective measurement method of fuel injection law can test the working performance of the fuel injector, and it is also an important link in the study of engine fuel injection strategy control. [0005] The principle of the vo...

Claims

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Application Information

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IPC IPC(8): F02M65/00
CPCF02M65/00
Inventor 董全陶锋宋恩哲姚崇范立云杨立平孙军
Owner HARBIN ENG UNIV
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