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Cylinder liner and associated cylinder block

A cylinder sheathing and sheathing technology, applied in the directions of cylinders, cylinder heads, engine components, etc., can solve problems such as poor contact

Inactive Publication Date: 2015-07-15
PEZHO SITROEN AUTOMOBILS SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The resulting deformation of the cylinder jacket is detrimental to the contact between the inner wall of the jacket and the corresponding piston

Method used

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  • Cylinder liner and associated cylinder block
  • Cylinder liner and associated cylinder block
  • Cylinder liner and associated cylinder block

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] The cylinder jacket 2 according to the first embodiment of the present invention is used to cover the cylindrical wall 1 of the cylinder of the cylinder assembly C of the internal combustion engine. The sheath 2 comprises an inner wall 3 for guiding the translation of the piston and an outer wall 4 for abutting against the cylindrical wall of the cylinder. The inner wall 3 and the outer wall 4 of the cylinder jacket are substantially concylindrical and delimit therebetween an upper edge 5 of the cylinder jacket for receiving at least part of a cylinder head gasket sandwiched between the cylinder assembly and the cylinder head. The outer wall 4 of the cylinder jacket 2 comprises an upper portion 6 that flares towards the upper edge 5 of the jacket 2 . according to figure 1 In the first embodiment of the invention shown, the outer wall 4 of the cylinder jacket 2 comprises a substantially conical upper portion 6 .

[0048] In the present invention, the outer wall 4 of th...

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PUM

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Abstract

The invention relates to a cylinder liner (2) for lining the cylindrical wall of a cylinder of an internal combustion engine, the liner (2) having an interior wall (3) intended to guide the translational movement of a piston and an exterior wall (4) intended to rest against the cylindrical wall of the cylinder, the interior (3) and exterior (4) walls of the cylinder liner being substantially co-cylindrical and between them delimiting an upper rim (5) of the liner which is intended to accept at least part of a cylinder head gasket, the exterior wall (4) of the cylinder liner (2) comprising a flared upper part (6), characterized in that the exterior wall (4) is covered, over all or part of its surface area but not over the flared upper part (6) which is bare, with a coating (8) able to encourage mechanical connection between the exterior wall and a metal component cast around said exterior wall. Associated cylinder block and associated motor vehicle.

Description

[0001] This application claims priority from French application serial number 1254594, filed May 21, 2012, the disclosure of which (text, drawings and claims) is hereby incorporated by reference in its entirety. technical field [0002] The present invention relates to the field of internal combustion engines in which cylinder assemblies are fitted with added jackets. More precisely, the present invention relates to a cylinder jacket for covering the cylindrical wall of a cylinder of an internal combustion engine, and to a cylinder assembly for an internal combustion engine comprising at least one cylinder covered with such a jacket. Background technique [0003] In its usual form, an internal combustion or heat engine comprises an engine assembly in which is formed at least one cylinder on which is movably mounted a piston coupled to a crankshaft by a connecting element such as a connecting rod. An engine assembly generally consists of three main parts, one of which is call...

Claims

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Application Information

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IPC IPC(8): F02F1/00
CPCF02F1/004F02F2001/008
Inventor A·舍瓦利耶
Owner PEZHO SITROEN AUTOMOBILS SA