A car engine adapting kerosene as a fuel, comprising a heater (40, 40a), positioned within an absorption manifold (32) and operated by controlling signal, which supplies the vaporized high temperature mixture with air and kerosene into the combustion chamber to be ignited therein while maintaining a controlled temperature such as to control heating by the control unit if the temperature goes beyond 450 DEG C since starting switch is turned on in the case of below 400 DEG C and the heating process continues until the switch is turned off, and also the space of combustion is made larger than prior art automobile to avoid the possibility of knocking.