Cylinder heads (100a to 100f are respectively provided with fuel injectors (101a to 101f). Each of the fuel injectors (101a to 101f) is connected to each of joints (105a to 105f) in a common rail (105) extending linearly through fuel injection pipes (103a to 103f). In this example, it can be achieved to allow all the fuel injection pipes (103a to 103f) to have the same length by crossing the injection pipes (103b, 103c, 103d and 103e) to connect. With this configuration, it is possible to reduce the irregularities in the amount of fuel injection and to enhance the engine performance.