| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel injection control device and a fuel injection method of an internal combustion engine capable of generating cavitation for stably removing a deposit.SOLUTION: A fuel injection control device of an internal combustion engine includes a fuel injection valve including a housing having a fuel passage and having a sac and a nozzle hole communicating with the fuel passage at a tip, a needle valve reciprocally arranged in the housing and abutting on a valve seat positioned in a base of the sac, and a driving device for driving the needle valve for opening and closing, and includes an injection control means for controlling the driving device for performing, a plurality of times, the injection of at least first injection by valve opening in an intermediate lift quantity of the needle valve and second injection by valve opening of the whole lift quantity started in the middle of closing a valve thereafter. |
