Browse Publications Technical Papers 2005-01-0718
2005-04-11

Hardfaced Valve and P/M Valve Seat System for CNG and LPG Fuel Engines 2005-01-0718

When adapted for use in automotive engines, CNG and LPG are considered environmentally friendly compared to gasoline or diesel fuel. However, when these gaseous fuels are used, wear of the valve seat insert and valve face increases if materials meant for use with gasoline are adopted. In comparison to a gasoline engine, the oxide membrane that is formed on the sliding surfaces of the valve face and valve seat insert is limited. As a consequence, adhesion occurs and increased wear of these components is the result. Based on analysis materials that are more compatible with these gaseous fuels were developed.

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