1. Home
  2. Honda R&D Technical Review Vol.22 N...
  3. Prediction Method of Low-cycle Fati...

Technical Review e-Book: Summary

Prediction Method of Low-cycle Fatigue Breakdown in HSDI Diesel Cylinder Head

Article of Honda R&D Technical Review Vol.22 No.2

Summary

This paper introduces a method of predicting low-cycle fatigue breakdown that takes as its focus the area around the glow plug hole of the diesel engine cylinder head, where cracks frequently occur during operating modes in which hot and cold cycles are repeated. Because an understanding of the strain amplitude and temperature of the areas in which cracks originate is necessary in predicting fatigue breakdown, strain analyses were conducted using CAE, and at the same time a method of calculating temperature from hardness measurements was used to determine local temperatures. This made it possible to study the local conditions of the cylinder head combustion chamber, which had previously represented a challenge. In addition, a hot-and-cold cycle endurance test using a prototype engine demonstrated the validity of predictions of low-cycle fatigue breakdown using the new method. The project also proposes the incorporation of the method in the design process in order to employ it as a tool for the review of specifications in new engine development.

Reference

(1) Ikuno, H., Iwanaga, S., Awano, Y.: Evaluation of Thermal Fatigue Property for Aluminum Alloy Castings, Toyota Central R&D Labs R&D Review, Vol. 31, No. 2, p. 73-84 (1996)
(2) Koibuchi, K., Kokubo, K.: Seihin Kaihatsu no tameno Zairyou Rikigaku to Kyodo Sekkei Know-how, The Nikkan Kogyo Shimbun, p. 86-93 (2002) (in Japanese)
(3) Miyazaki, T., Kagaya, H., Nishino T., Murakami, N., Torigoe, Y., Ikeda, M.: Prediction of Cylinder Head Thermal Fatigue Life, 2005 JSAE Annual Congress Proceedings, No. 111-05, p. 23-26 (2005)
(4) Kubo, M., Imai, K., Tsubouchi, M., Nomura, Y., Ishiguro, T., Kaneko, H., Kondo, M.: Durability Evaluation Technique Using Thermal Analysis on Diesel Engine Cylinder Head, 2008 JSAE Annual Congress Proceedings, No. 90-08, p. 19-22 (2008)
(5) International Standard ISO/DIS 6507-1: 1995, Metallic materials-Vickers hardness test-Part 1: Test method
(6) Japanese Industrial Standards JIS H 2211: 1960, Aluminum alloy ingots for castings
(7) Japanese Industrial Standards JIS H 0001: 1972, Aluminum, magnesium and their alloys-Temper designation

Author (organization or company)

Shohei MIKAMI(Automobile R&D Center)、Koichi OGINO(Automobile R&D Center)、Mitsumasa SORAZAWA(Automobile R&D Center)

We would like to get your opinion on this research paper. (This is only applicable to registered members.)

The readers of this research paper have also selected these research papers.

Prediction Technology for Thermal Mechanical Fatigue Strength of Cylinder Head
Article of Honda R&D Technical Review Vol.31 No.2
Prediction of Fracture of Cylinder Block Main Bearing by Fretting Fatigue and Development of Verification Method
Article of Honda R&D Technical Review Vol.28 No.1
Proposal and Verification of Friction Coefficient Calculation Model by True Contact and Oil Film (Evaluation of Piston Ring and Sleeve)
Article of Honda R&D Technical Review Vol.33 No.1