| 摘要 |
<p>A compression ignition internal combustion engine, comprising a combustion chamber (16) allowing air and fuel supplied therein, an intake valve (19a) opening and closing a passage between an intake port (6) communicating with the combustion chamber and the combustion chamber, and an exhaust valve (19b) opening and closing a passage between an exhaust port (14) communicating with the combustion chamber and the combustion chamber, wherein the temperature and pressure inside the combustion chamber are increased by the compressive operation of a piston after the intake valve (19a) is closed so as to self-ignite air-fuel mixture, a fuel injection nozzle (11) injects pressurized air, forming an ignition trigger factor, directly into the combustion chamber so that the air-fuel mixture during the expansion stroke of the piston comes into an ignitable state, and an ECU1 controls the injection timing of the pressurized air according to an ignition timing, whereby the internal combustion engine can be controlled to an appropriate self-ignition timing in the wide engine operating range with respect to a load and a speed without changing the shape of the combustion chamber remarkably.</p> |
