Failure analysis of ductile iron crankshaft in compact pickup truck diesel engine

Crankshaft is a key transmission part in single-cylinder diesel engine, but its mass casting production is a problem. Based on the traditional shell molding process of ductile iron castings, this study did lots of techniques optimization for the crankshaft castings of single-cylinder diesel engine. Through increasing the multi-block or a combination of chill iron at sector-plate and upper spindle neck, increasing the pressure head of blind risers and the cross section of sprue, improving the fill compaction of iron pills, and other improvements, produces qualified ductile iron crankshaft castings without or almost without the shrinkage and other casting defects.

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Failure Analysis of Early Fracture for Diesel Engine Cylinder Liner

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.461.177 ◽

2012 ◽

Vol 461 ◽

pp. 177-181

Author(s):

Jun Gu ◽

Yuan Qiang Xu ◽

Jing Jing Zhou

Keyword(s):

Diesel Engine ◽

Failure Analysis ◽

Early Time ◽

Cylinder Liner ◽

Acute Angle ◽

Engine Cylinder ◽

Regulatory Measures ◽

Engine Cylinder Liner

This article, through the cylinder jacket break phenomenon which occurs to the diesel engine early time carries on the failure analysis, suggests that the cylinder jacket material ingredient control is lax, causes the cylinder jacket material brittleness to be oversized, the tool escape acute angle is the cylinder jacket break primary cause, and proposes corresponding regulatory measures prevent the cylinder jacket early tithe break.

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Failure analysis of diesel engine rocker arms

Engineering Failure Analysis ◽

10.1016/j.engfailanal.2004.12.039 ◽

2006 ◽

Vol 13 (4) ◽

pp. 598-605 ◽

Cited By ~ 3

Author(s):

Z.W. Yu ◽

X.L. Xu

Keyword(s):

Diesel Engine ◽

Failure Analysis

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Failure analysis of a diesel engine cylinder head

Engineering Failure Analysis ◽

10.1016/j.engfailanal.2005.07.016 ◽

2006 ◽

Vol 13 (7) ◽

pp. 1101-1107 ◽

Cited By ~ 10

Author(s):

Xiaolei Xu ◽

Zhiwei Yu

Keyword(s):

Diesel Engine ◽

Failure Analysis ◽

Cylinder Head ◽

Engine Cylinder

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Paper 2: Safety and Failure Analysis of Large Diesel Engine Pistons

Proceedings of the Institution of Mechanical Engineers Conference Proceedings ◽

10.1243/pime_conf_1969_184_034_02 ◽

1969 ◽

Vol 184 (2) ◽

pp. 8-16 ◽

Cited By ~ 1

Author(s):

D. J. White ◽

L. R. Enderby

Keyword(s):

Cast Iron ◽

Diesel Engine ◽

Failure Analysis ◽

Diesel Engines ◽

Fatigue Testing ◽

Fatigue Tests ◽

Safety Factors ◽

Design For Safety ◽

Theoretical Stress ◽

Fatigue Failures

This paper describes investigations that were undertaken to identify the reasons for fatigue failures in cast iron and aluminium pistons of large diesel engines. The work involved experimental and theoretical stress analyses, and fatigue tests were made on specimens cut from actual pistons. It was found that four pistons which suffered fatigue failures had safety factors of 0·60, 0·68, 0·94, and 0·96, while three modified designs which performed satisfactorily were assessed to have safety factors of 1·1, 1·24, and 1·57. Special attention is drawn to the method of fatigue testing in which features typical of the piston are retained. While it is considered prudent to design for safety factors substantially in excess of unity, the results presented should promote confidence that this approach to the design of components is valid not only in this case but more generally.

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