Engine heat distribution test method

The invention relates to the field of engine test methods and particularly relates to an engine heat distribution test method. The engine heat distribution test method includes the following steps of step one, arranging measurement points and installing thermocouples on a main thrust line of a cylinder body, an auxiliary thrust line of the cylinder body, a cylinder cover spark plug hole, and a cylinder cover valve seat; step two, arranging temperature alarming ranges of a cylinder hole main thrust line, a cylinder hole auxiliary thrust line, a cylinder hole connection area, the cylinder cover valve seat, and the cylinder cover piston plug hole; step three, measuring sensitivity of temperatures on an operation condition, a cooling liquid temperature, a cooling liquid system pressure, and a cooling liquid flow. According to the engine heat distribution test method, by means an engine heat distribution test, the problem of engine valve ablation of a small cylinder body is solved; a cylinder cover, a cylinder bod