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Causes Analysis of Wear and Failure of Engine Valve Guide
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Fujian Guo1, 2, Guangyi Lu2, Wenle Liu2, 3, Xuelin Wang2, 3, Chengjia Shang2, 3
Automobile Technology & Material | 2024, (7) : 45 - 48
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Automobile Technology & Material | 2024, (7): 45-48
Causes Analysis of Wear and Failure of Engine Valve Guide
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Fujian Guo1, 2, Guangyi Lu2, Wenle Liu2, 3, Xuelin Wang2, 3, Chengjia Shang2, 3
Affiliations
  • 1 Materials Science and Engineering, Guangdong Ocean University, Yangjiang 529500
  • 2 Yangjiang Alloy Materials Laboratory, Yangjiang 529500
  • 3 State Key Laboratory of New Metals, University of Science and Technology Beijing, Beijing 100083
Published: 2024-07-20 doi: 10.19710/J.cnki.1003-8817.20230364
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Currently, with the continuous improvement of engine performance, the working environment of the valve guide has become more harsh, so the failure problem of the valve guide has become more and more common. A comparative analysis of the durable and failed components of the engine exhaust valve guide is conducted to identify the causes of material failure. The wear resistance, microstructure, and porosity of the valve guide are studied. The results show that the wear test results of the 2 specimens are consistent with the bench test results, and the failed specimen experiences wear serious. The microstructure of both is consistent with a small amount of pearlite and a large amount of irregular pearlite and alloy phase and pores. The porosity results indicate that the durable specimen has a higher porosity ratio, storing more oil and with a density meeting the standard. However, the failed specimen has a large hole with a diameter of 100 μm, which reduces its wear resistance. Therefore, the cause of wear failure is identified as lower porosity and the existence of larger pores.

Valve guide  /  Wear failure  /  Microstructure  /  Pore
Fujian Guo, Guangyi Lu, Wenle Liu, Xuelin Wang, Chengjia Shang. Causes Analysis of Wear and Failure of Engine Valve Guide[J]. Automobile Technology & Material, 2024 , (7) : 45 -48 . DOI: 10.19710/J.cnki.1003-8817.20230364
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doi: 10.19710/J.cnki.1003-8817.20230364
  • Online Date：2025-12-19
  • Published：2024-07-20
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Affiliations
    1 Materials Science and Engineering, Guangdong Ocean University, Yangjiang 529500
    2 Yangjiang Alloy Materials Laboratory, Yangjiang 529500
    3 State Key Laboratory of New Metals, University of Science and Technology Beijing, Beijing 100083
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https://castjournals.cast.org.cn/joweb/qcgyycl/EN/10.19710/J.cnki.1003-8817.20230364
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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