| 摘要 |
PROBLEM TO BE SOLVED: To provide an engine capable of extending a useful life of a fuel injection device.SOLUTION: This invention relates to an engine comprising a control device and a fuel injection device in which a fuel pre-injection 3 and a main injection 4 are carried out by the fuel injection device under a control of the control device. The control operation of the control device does not perform the pre-injection but perform the main injection 4 in a rated operation region D1, and perform both pre-injection 3 and the main injection 4 in other operation regions D2, D3, and D4. An interval 7 ranging from a finish of the pre-injection 3 to a starting of the main injection 4 is set longer in both the maximum torque operation region D2 and a middle load operation region D3 than that in the light load region D4 under control of control means. |
