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Cylinder head assembly for an internal combustion engine and method of making the same

A technology of cylinder head and internal combustion engine, applied in the direction of cylinder head, engine components, cylinder, etc., can solve problems such as pollution

Inactive Publication Date: 2010-11-10
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such materials can present potential contamination issues for devices such as oxygen sensors or other sensors if mistakenly applied to other parts of the engine or valves during application or burnt during engine operation, and thus are used in cylinder head assembly manufacturing. must be applied with great care and carefulness or should be avoided during

Method used

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  • Cylinder head assembly for an internal combustion engine and method of making the same
  • Cylinder head assembly for an internal combustion engine and method of making the same
  • Cylinder head assembly for an internal combustion engine and method of making the same

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Embodiment Construction

[0043] According to an exemplary embodiment of the present invention, as figure 1 As shown, a cylinder head assembly 8 for an internal combustion engine (not shown) includes a cylinder head 12 having a combustion chamber 10 . Depending largely on the specific engine and / or fuel system configuration, the combustor may include a number of various configurations and will be referred to as combustor / face 10 for descriptive purposes. The cylinder head includes one or more intake ports 14 through which a fuel / air mixture enters the combustion chambers during engine operation. The fuel / air mixture is compressed by a reciprocating piston (not shown) and combusted in the combustion chamber / face 10 . The combustion event drives reciprocating motion of the piston, thereby driving the engine. An exhaust port 16 is provided for the exhaust of combustion products from the combustion chamber / face 10 .

[0044] refer to figure 2 , poppet valve 18 is movably disposed in each intake port 1...

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PUM

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Abstract

A cylinder head for an internal combustion engine comprises a combustion chamber / face, a port opening into the combustion chamber / face and an insert pocket circumferentially disposed about the port and configured to receive a valve seat insert therein. A carbon layer is disposed between the insert pocket and the valve seat insert and is configured to prevent corrosion of the insert pocket caused by exposure to alcohol based fuels such as ethanol.

Description

technical field [0001] The present invention relates to a cylinder head assembly for an internal combustion engine having a valve seat insert, and more particularly, the present invention relates to a cylinder head assembly having a corrosion resistant valve seat insert and a method of manufacturing the same. Background technique [0002] A valve seat insert may be installed in the cylinder head of an internal combustion engine to improve durability. Such inserts are typically used in cylinder heads made of softer and lighter alloys that may not have the robust strength, hardness, wear, and other material properties required for high temperature, high wear environments. The valve seat is usually press fit into an insert slot in the cylinder head and is usually made of a relatively hard, wear and heat resistant material such as cast or sintered metal. When installed in the cylinder head, the valve seat insert effectively provides a seating surface for the engine's reciprocat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F1/24F01L3/02
CPCF01L3/22F01L2101/00F01L2103/00F01L2303/00F01L2301/00
Inventor P-K·袁D·L·穆尔
Owner GM GLOBAL TECH OPERATIONS LLC