driven by a first cam 210 the second high pressure fuel pump 300 is drive by a second cam 310 having different discharge phases from the first cam 210 the high pressure delivery pipes 112 are provided to the respective left and right banks to provide high pressure fuel to the in cylinder injectors 110 the in cylinder injectors 110 are provided to the high pressure delivery pipes 112 and four in cylinder injectors 110 are provided for each of the left and right banks the low pressure delivery pipes 122 are provided to the respective left and right banks to supply fuel to the intake passage injectors 120 the intake passage injectors 120 are provided to the low pressure delivery pipes 122 and four intake passage injectors 120 are provided for each of the left and right banks the engine including the fuel supply system 10 is controlled by an engine ecu electronic control unit although not shown in the drawing the engine ecu includes a cpu central processing unit as a computation device and a memory as a storage device the cpu executes a program to be described later and the memory stores a map to be described later the discharge port of the feed pump 100 of the fuel tank is connected to a low pressure supply pipe 400.