An internal combustion engine (10) is provided with a port injector (28) and an in-cylinder injector (22). Before a port injection is started, the total amount of fuel to be injected is calculated (at an injection amount calculation timing). The port injec...

A fuel injector for an internal combustion engine (2) including an in-cylinder fuel injection valve (4a,6a,8a,10a,12a,14a) and an intake port fuel injection valve (4b,6b,8b,10b,12b,14b). An ECU (56) controls an electromagnetic valve (42b) to keep a fuel in...

A bypass air intake passage includes a vaporized fuel branch section (42) which channels vaporized fuel to each cylinder. A vaporized fuel distribution passage (43) extends from the vaporized fuel branch section to an opening (44) located in each air intak...

Problem to be Solved: There will be provided a fuel injection system for an internal combustion engine capable of supplying, in structure in which fuel injection valves are arranged on the upstream side and on the downstream side of the throttle valve resp...

Problem to be Solved: In a fuel injection system for an internal combustion engine in which fuel injection valves are arranged on the upstream side and on the downstream side of the throttle valve respectively, the throttle valve will be prevented from fre...