| 摘要 |
[Problem] To provide a control device with which the values for multiple combustion parameters for changing the combustion state of an internal combustion engine can be set appropriately, and with which the fuel consumption rate can be improved regardless of the operating state. [Solution] An engine ECU (70) sets combustion parameters (a main injection timing, a pilot injection timing, a fuel injection pressure, a supercharging pressure, and the like) such that the center of gravity position of the heat generation rate achieves a fixed target crank angle regardless of the load on the engine (10). Furthermore, the ECU (70) estimates the center of gravity position of the heat generation rate on the basis of the output from an in-cylinder pressure sensor (64), and performs feedback control of the combustion parameters such that the estimated center of gravity position of the heat generation rate is identical to the target crank angle. |
