METHOD FOR ESTIMATING AMOUNT OF HEAT RECEIVED BY REFRIGERANT AND CONTROLLER

摘要

A method for estimating the amount of heat received by refrigerant by an ECU (1) comprises a step for detecting an estimation factor including the intake air amount (GA) of an internal combustion engine (50), and a step for estimating the amount of heat received from exhaust gas by cooling water (W) of the internal combustion engine (50) in a water-cooled exhaust manifold (20) based on a detected estimation factor. Preferably, the estimation factor further includes at least any one of the cooling water temperature (ethw), the intake air temperature (etha) of the internal combustion engine (50), or the number of revolutions (NE) of the internal combustion engine (50).