1965-02-01

Factors Influencing Valve Temperatures in Passenger Car Engines 650484

Passenger car engine poppet valves operate in a critical temperature range by virtue of their function and environment. Certain engine design parameters such as the shape of the valve head, cylinder head valve layout, stem-guide relationship, fuel-air ratio, and compression ratio exert a direct influence on their temperature and performance. In operation, abnormal combustion phenomena may further increase the normally high valve temperature. This paper describes the effect of these factors on valve temperature.

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