Count method for engine oil atomizer endurance test

A counting method and fuel injector technology, which can be used in engine testing, machine/structural component testing, engine components, etc., can solve problems such as inaccurate counting, and achieve the effect of accurate counting and accurate measurement methods.

Inactive Publication Date: 2014-08-06
WUXI VOCATIONAL & TECHN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Practical experience shows that the above methods will cause inaccurate counting problems in the actual operation process, especially the number of inj

Method used

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  • Count method for engine oil atomizer endurance test
  • Count method for engine oil atomizer endurance test
  • Count method for engine oil atomizer endurance test

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Embodiment Construction

[0015] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0016] exist figure 1 In , the system composition of the engine injector durability test of the present invention is given in schematic form, including: the tested injector, the hydraulic system of the test bench, the acceleration sensor and the test control system, etc. During actual operation, an acceleration sensor is arranged on each injector to be tested. The acceleration sensor is rigidly fixed on the fuel injector or a fixture rigidly connected with the fuel injector.

[0017] The hydraulic system of the test bench provides the required test conditions for the tested injector, such as fuel oil, pressure, etc., and ensures the accuracy and stability of the test conditions under the joint action of pressure sensors and a series of actuators. The injector under test executes the injection command under the control of the test control s...

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Abstract

The invention discloses a count method for an engine oil atomizer endurance test. The count method comprises the following steps that an acceleration sensor is arranged on an oil atomizer, the oil atomizer is in rigid connection with the acceleration sensor, vibration signals in the start process of the oil atomizer are sensed by the acceleration sensor and transmitted to a control unit of a test system, and the number of times of the vibration signals is monitored and counted so that the atomization processes of the oil atomizer can be counted. A test method can directly and accurately count the number of times of atomization, measurement is accurate, the method is easy to implement, and operation is easy.

Description

technical field [0001] The invention relates to a test and measurement method, in particular to a method for measuring the injection times of the fuel injector in the durability test of the engine fuel injector. Background technique [0002] In the existing durability test of engine fuel injector, the method of indirect counting is usually used to count the injection times of the tested fuel injector. Indirect counting counts the number of control commands issued by the control unit or the number of power-on times of the fuel injector as the basis for measuring the injection times of the fuel injector. The actual situation is that when the system has occasional abnormalities or the durability test is about to end, the control unit issues a control command or the system completes the power supply for the injector, but the injector does not inject; at this time, the above injection times are used The measurement method has the problem that the count is too large. In the engi...

Claims

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Application Information

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IPC IPC(8): F02M65/00
Inventor 张美娟
Owner WUXI VOCATIONAL & TECHN COLLEGE
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