| 摘要 |
An internal combustion engine having a combustion heater is capable of enhancing an engine starting characteristic by improving warm-up of the engine and ensuring a sufficient oxygen content in intake air of the engine. The engine includes the combustion heater for raising a temperature of the intake air by introducing a combustion gas into an intake passageway, a combustion gas introducing passageway, through which a combustion gas discharge port of the combustion heater is connected to the intake passageway, for introducing the combustion gas into the intake passageway, an air blow fan for supplying oxygen to the engine intake air, which has become the engine intake air containing the combustion gas, by introducing the combustion gas into the intake passageway via the combustion gas introducing passageway, and an ECU for controlling the quantity of oxygen supplied by the air blow fan. The ECU executes, at the engine starting time, an augmentation control of augmenting the oxygen content in the engine intake air by the air blow fan. Under this augmentation control, the engine intake air is supplemented with the oxygen, and, with this supplement, the engine intake air becomes the intake air with oxygen content that is effective enough for starting the engine. <IMAGE> |
