| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel injection device of an internal combustion engine, which prevents the occurrence of defective injection by suppressing the drive change of a first fuel injection valve when the acceleration state from a first engine operational range exceeds the predetermined value. <P>SOLUTION: The fuel injection device includes an in-cylinder direct-injection valve 17, an air intake passage injection valve 18, a fuel injection amount calculator A1, acceleration state detectors A1-A4, and a control unit ECU performing the control so that the total fuel injection amount at which the engine operating range is within the PI only injection range K1 is injected via the air intake passage injection valve, each divided fuel amount of a first fuel injection valve and a second fuel injection valve divided by the predetermined ratio α when the engine operating range is within DI+MPI injection range K2 is obtained, and the fuels of the respective divided fuel amounts are injected via a DI valve 17 and an MPI valve 18, respectively. The control unit performs the control so as to perform the injection via the DI valve 17 and the MPI valve 18 in the DI+MPI injection range K2 after the elapse of the predetermined waiting time tw when the acceleration state from the PI only injection range K1 to the DI+MPI injection range K2 exceeds the predetermined value, and enters the timer zone Et. <P>COPYRIGHT: (C)2012,JPO&INPIT |
