ABSTRACT
During combustion, when the engine is operating at full throttle, the maximum temperature reached by the burning gases may be as high as 1500-2000 °C. The expansion of the gases during the power stroke lowers their temperature considerably, but during the exhaust stroke the gas temperature may still be approximately 800 °C. All the engine components with which these hot gases come into contact will absorb heat from them in proportion to:
● the gas temperature ● the area of surface exposed to the gas ● the duration of the exposure
Engine operating temperatures are shown in Fig. 2.1.
