CYLINDER BORE SURFACE PROFILE AND PROCESS

An engine block has a cylinder bore wall comprising a first portion having a first diameter and a second portion axially adjacent to the first portion having a second diameter greater than the first diameter. A series of parallel, circumferentially-extending grooves is formed in the second portion t...

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Bibliographic Details
Main Authors BEYER TIMOTHY GEORGE, STEPHENSON DAVID ALAN, BARTLE KEITH RAYMOND, VAN LOON MACKENZIE THOMAS
Format Patent
LanguageEnglish
Published 15.10.2015
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Summary:An engine block has a cylinder bore wall comprising a first portion having a first diameter and a second portion axially adjacent to the first portion having a second diameter greater than the first diameter. A series of parallel, circumferentially-extending grooves is formed in the second portion to roughen the surface and enhance adhesion of a later-applied, sprayed-on metallic coating. A non-masking section is formed between the first and the second portions to provide for a less-abrupt corner between the larger diameter and smaller diameter portions and eliminate any spray-masking that may otherwise. The non-masking section may be a flat or a curved chamfer. The non-masking section may be a non-grooved section of constant diameter.
Bibliography:Application Number: US201414251732