外文文献翻译

Mechanism of diesel engine cylinder liner wear and

preventive measures

GHIsaac1*,JThompson1,SWilliams2,andJFisher2

1DePuyInternationalLtd,Leeds,UK

2InstituteofMedicalandBiologicalEngineering,University of

Leeds,Leeds,UK

Abstract: Diesel engine cylinder liner wear is the most common

failure modes, their

causes proper understanding of hazards and take active preventive measures

beneficial to improve efficiency in the use of the whole life of diesel

engines and mechanical equipment. To this end, the law discusses the formation of a diesel engine cylinder liner wear, analyzes the mechanism

and the harm produced diesel engine cylinder liner wear is proposed to reduce

the diesel engine cylinder liner wear should be noted in the use and warranty

several problems for diesel engines the normal use of reference.

Keywords: Energy and Power Engineering; cylinder liner; review;

diesel engine;

wear; prevention

CLC: TK428 Document code: B Article ID: 1OO3-188X (2007) 07 - 0194

an O2 0

Introduction

Cylinder liner is one of the important parts of the diesel engine, because the inner wall of the harsh working conditions, are prone to wear and tear, and in severe lower sealing between the cylinder wall and piston rings, making the diesel engine appears

difficult to start, power reduction, fuel and oil consumption increases, as well as

shorten the life of

the exhaust black smoke and so on.

1 cylinder liner wear and law

Due to the different working conditions piston cylinder located at different locations, cylinder liner wear is very uneven, the general

rule is to wear: 1) piston to the crank angle at the ending point, the contact area of the

first piston ring and cylinder liner wear of the inner wall of the large

amount of maximum radial wear up 0.2-0.3mm. Down here by the

amount of wear was significantly reduced, showing the tapered inner wall of the cylinder in special cases, such as impurities in the oil with the

oil not Ji jian filtration to an inner wall of the cylinder liner wear of the

abrasive surface, the wear was similar to the drum type.

2) in the wall of the cylinder liner and the piston ring does not contact

portion, almost no wear of the shoulder to form a cylinder known as

a

step.

3) As the liner side of the high cooling efficiency, piston side pressure, so

that the inner wall of the cylinder liner wear is greater than the transverse vertical abrasion caused by out of round. Multi-cylinder engine wear volume of each cylinder is not uniform, the cooling intensity

is generally high and the cylinder liner wear their large amount .

2 wear mechanism and hazards arising

2.1 cylinder liner wear mechanism produced

2.1.1 wear form

1) adhesive wear. The inner wall of the cylinder and piston rings

are set in the high temperature, high pressure conditions, or elevated temperature to reduce viscosity oil burning, difficult to form a high pressure film; while changing the relative velocity between a piston

ring and cylinder liner both large (0-30m / s). Therefore, the use of slightly negligent maintenance process, it will make the cylinder wall

and piston ring friction or dry friction semi formed so that both direct contact with the metal surface to produce adhesive to form adhesive wear.