The M111.940 is a 2.0 L (1998 cc) 16-valve engine with bore and stroke of 89.9 x 78.7 mm and compression ratio of 9.6:1. It produces 100 kW (136 hp) of power and 190 N-m of torque.
Applications:
- 1992-1995 E200
- 1993-2000 C200 (W202)
Unlike the 102, 103, and early 104 series engines, the engine did not use mechanical injection but the Siemens PEC/PMS (Pressure Engine Control) management system, which integrates fuel and spark management.
It is a speed-density type of system, as mixture formation is dependent on RPM, TPS angle, and manifold pressure (MAP).
Injectors work in pairs (idle, part load), or altogether (full-load).
It uses 2 ignition coils and no ignition distributor. Cylinders are fired in pairs (dual fire) - 1 and 4 together, and 2 and 3 together. The crankshaft position sensor is sensing the movement of two radially opposed position plates on the flywheel, one of which is magnetized, and the other is not. Thus, the engine management has precise information which group of cylinders to fire, and which group of injectors to spray.
Read more about this topic: Mercedes-Benz M111 Engine