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Method for testing laser heat load of cylinder cover

A test method and cylinder head 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 overall temperature distribution on the top surface of components, and achieve low cost and simulation reliability High and efficient effect

Active Publication Date: 2015-04-29
INST OF MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

[0006] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art that cannot simulate the overall temperature distribution of the top surface of parts under actual working conditions, and provide a laser thermal load test method for cylinder heads using laser as a heat source, which can simulate the cylinder head under actual working conditions. Cover the overall temperature distribution of the fire surface

Method used

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  • Method for testing laser heat load of cylinder cover
  • Method for testing laser heat load of cylinder cover
  • Method for testing laser heat load of cylinder cover

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Embodiment Construction

[0055] Taking the 132 cylinder head as an example, the present invention will be further described in detail in conjunction with the accompanying drawings and examples. The present invention provides a laser thermal load test method for the cylinder head, which can simulate the overall temperature distribution of the fire surface of the cylinder head under actual working conditions. .

[0056] 1. Calculation of the light intensity distribution of the required loading beam

[0057] 1. When the 132 cylinder head is working in the actual working condition, the thermocouple is used to measure the temperature value of multiple points on the fire surface of the 132 cylinder head. The measurement points are mainly distributed in the nose bridge area. The location diagram is as follows figure 1 As shown, this multi-point temperature value can reflect the temperature distribution of the fire surface of the cylinder head, such as figure 2 shown;

[0058] 2. 132 cylinder head structur...

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Abstract

The invention discloses a method for testing laser heat load of a cylinder cover. According to the method, original laser beams are shaped into non-uniform beams with specific light intensity distribution by adopting a beam shaper, the non-uniform beams are loaded to the fire surface of the cylinder cover to simulate the overall temperature distribution condition of the fire surface of the cylinder cover under the actual working condition, and laser heat load test can be implemented by means of a cooling device and a temperature measuring system. The method and the specification have the characteristics of low cost, high efficiency and high simulation reliability.

Description

technical field [0001] The invention relates to a thermal load test method of a cylinder head using a laser as a heat source. Background technique [0002] At present, the research on the thermal load test of the cylinder head is mainly the component test of the thermal simulation system, which has the advantages of good economy, short period and strong pertinence. At present, thermal simulation systems at home and abroad mainly include infrared heating systems, gas heating systems, high-frequency induction heating systems, quartz lamp heating systems, and laser heating systems. Infrared heating systems, gas heating systems, high-frequency induction heating systems, etc., cannot effectively simulate the temperature distribution of the cylinder head fire surface. The laser has the characteristics of high power density and good controllability of time and space distribution, which has obvious advantages in thermal load test. [0003] Lasers have also been used at home and ab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/00
Inventor 虞钢聂树真郑彩云宁伟健何秀丽
Owner INST OF MECHANICS CHINESE ACAD OF SCI
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