Ultrasonic Measurement of Wall Thickness in Diesel Cylinder Liners

1947 ◽  
Vol 19 (2) ◽  
pp. 368-371 ◽  
Author(s):  
Francis W. Struthers ◽  
Horace M. Trent
1970 ◽  
Vol 43 (511) ◽  
pp. 458-461 ◽  
Author(s):  
S. M. Jackson ◽  
G. P. Naylor ◽  
I. J. Kerby

Author(s):  
Edney Deschauer Rejowski ◽  
Edmo Soares ◽  
Ingo Roth ◽  
Steffen Rudolph

With the increase of combustion loading and the trend to reduce engine size, there is a need for thinner but stronger wet cylinder liners. While most of the current cylinder liners are made of gray cast iron, due to its good tribological behavior, machinability performance and competitive price, alternative casting materials like compact graphite iron, ductile iron and even steel are being considered to cover the future engine demands. In this paper, a new ductile iron (DI) cast material for wet cylinder liners is presented. The material has about 60 and 70% higher limits respectively for tensile stress and fatigue resistance as compared to conventional gray cast irons, but without penalty on the tribological properties. There is also a potential improvement to avoid cavitation on the outside surface due to its higher young modulus, which also equates to a higher stiffness. The tested cylinder liners were induction hardened on the running surface and a slide hone process was used to improve wear and scuffing resistance. The liners were tested in a HDD engine with PCP of 245 bar and showed similar wear as observed with conventional cylinder liners of gray cast iron material. The DI cylinder liners were also tested in an abusive scuffing engine test without any concern. The improved mechanical properties of the described new DI material introduce possibilities to reduce liner wall thickness or increase specific output. The preliminary evaluation in this paper showed that this new material is feasible for HDD diesel engines with PCP up to 250 bar. In cases that the customer needs to increase the bore diameter for output reasons there is the potential to reduce the liner wall thickness up to 25% based on high mechanical properties (UTS, Young Modulus and fatigue strength). In both cases, it’s recommended a FEA analysis to support the new component design.


2007 ◽  
Vol 47 (11) ◽  
pp. 1730-1739 ◽  
Author(s):  
E.C. Brown ◽  
L. Mulvaney-Johnson ◽  
P.D. Coates

Author(s):  
Julio C. Adamowski ◽  
Flavio Buiochi ◽  
Marcos Tsuzuki ◽  
Nicolas Perez ◽  
Claudio S. Camerini ◽  
...  

1990 ◽  
Vol 32 (12) ◽  
pp. 931-934
Author(s):  
B. M. Astashkevich ◽  
O. M. Eparkhin ◽  
G. A. Maznova

1989 ◽  
Vol 15 (8) ◽  
pp. 723-728 ◽  
Author(s):  
Kirk W. Beach ◽  
Carol A. Isaac ◽  
David J. Phillips ◽  
D.Eugene Strandness

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