• The warm-up acceleration function accelerates engine warm-up by varying the engine’s idling speed in accordance with the engine’s coolant temperature. It can operate either…

• The fuel injection pressure is calculated from the fuel injection quantity and engine speed.  

(1) Main injection timing • The main injection timing is calculated from the fuel injection quantity and engine speed. (2) Pilot injection timing (pilot interval)…

(1) Fuel injection quantity during engine startup • During engine startup, the fuel injection quantity is determined in accordance with the engine speed and coolant…

(1) Pilot injection • Pilot injection entails the injection of an extremely small amount of fuel ahead of the main injection. • Pilot injection suppresses…

(1) Operation (1.1) Injection not taking place • With the magnet not energized, the armature plate is pushed up by the valve spring such that…

• The common rail distributes to the injectors high-pressure fuel that has been fed from the supply pump. • Each flow limiter prevents an abnormal…

(1) MPROP (rail pressure control valve) • The MPROP receives fuel from the feed pump and feeds fuel toward the plungers of the supply pump…

• In the common rail system, an electronic control unit monitors various aspects of the engine (engine speed, throttle opening, coolant temperature, etc.) using information…