The M111 engine family is a straight-4 automobile engine from Mercedes-Benz, produced from 1992 to 2003. Debuted in the 1992 Mercedes-Benz E-Class (W124), this engine family is relatively oversquare and uses 4 valves per cylinder. All engines in the family use a cast iron engine block and aluminum alloy cylinder head.
Video Mercedes-Benz M111 engine
M111.920
The M111.920 is a 1.8 L (1799 cc) 16 valve engine. It produces 90 kW (122 hp) of power at 5500 rpm, and 170 Nm at 4200 rpm. It has a variant called the M111.921 which has a MAF (Mass Air Flow)-sensor instead of MAP-sensor on the first one, and using ECU instead of PMS. Applications: 1997-2000 C180 W202.
Applications:
- 1993-2000 C180 (W202)
Maps Mercedes-Benz M111 engine
M111.940
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 Nm of torque.
Applications:
- 1992-1995 E200 (W124)
- 1997-2002 CLK200 (C208)
- 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.
M111.942
Similar to the M111.940 engine, used in the years following. It produces 100 kW (134 hp, 136PS) of power and 190 Nm (140 lb·ft) of torque.
Applications:
- 1995-2000 E200 (W210)
- 1993-2000 C200 (W202)
M111.944
The M111.944 is a 2.0 L (1998 cc) 16-valve engine utilizing a supercharger similar to the 2.3L M111.973 engine. It produces 141 kW (192 hp) of power and 270 Nm of torque. This engine was built especially for SLK 170 and CLK 208 exported to Italy, The Netherlands, Portugal and Greece for tax reasons. The 'executive cars' tax limit was based in engine's capacity bigger than 2000 cc, so Mercedes in order to hit these markets made a mixture of the M111.940 with the supercharger of M111.973 for high performance at low engine capacity.
Applications:
- 1997-2001
M111.946
It produces 100 kW (136 hp) of power.
Applications:
- Mercedes-Benz SLK (R170.435)
M111.951
EVO engine ((M 111 E 20 EVO). Naturally aspirated. compression ratio is 10.6, the power is 129 hp, torque - 140 ft lb. Improvement includes reinforced cylinder block, new cylinder head, individual coils and new sparkplugs, connecting rods and pistons for higher compression ratio, fuel injection improvements.
Applications:
- 2000-2002 Mercedes-Benz C Class (W 203) C180
M111.955
It produces 120 kW (163 hp) of power.
Applications:
- 2000-2002 Mercedes-Benz C Class (W 203) Kompressor
- 2001 Mercedes-Benz SportCoupe (CL203) Kompressor
M111.957
This is a 2.0L Kompressor engine utilizing a supercharger similar to the 2.3L M111.974 engine, but with a lower power output of 120 kW (161 hp, 163PS) and torque of 230 Nm (170 lb·ft) @ 2500 rpm.
Applications:
- 1998 E200K
- 2000-2002 E200K
M111.960 / M111.961
The M111.960 is a 2.2 L (2199 cc) 16-valve engine with bore and stroke of 89.9 x 86.6 mm and compression ratio of 10:1. It produces 110 kW (150 hp) of power and 210 Nm of torque.
Applications:
- 1992-1995 E220
- 1994 - 1996 Mercedes-Benz W202 C220
M111.970 and M111.974
The M111.970 is a 2.3 L (2295 cc) 16-valve engine with bore and stroke of 90.9 x 88.4 mm and compression ratio of 10.4:1. It produces 110 kW (150 hp) of power and 220 Nm of torque.
Applications:
- 1995-1997 E230
- 1997-1998 C230
- 1993-2003 Ssangyong Musso 4 cylinder.
- 1993-2003 Ssangyong Korando 4 cylinder.
- 2005-... Ssangyong Kyron 4 cylinder.
M111.974
Similar to the 2.3L M111.970 engine, except the usage of a supercharger (kompressor), boosting its power output to 142 kW (193 hp).
Applications:
- 1995-2003 E200 Kompressor
- 1997-2002 CLK230 Kompressor (C208)
- 1999-2002 C230 Kompressor (W202)
- 1998-2004 SLK230 Kompressor
M111.973
Similar to the 2.3L M111.974 engine.
Applications:
- 1997-2000 SLK230 Kompressor
M111.981
Similar to the 2.3L M111.974 engine.
Power 143 kW (194 PS; 192 hp).
Applications:
- 2002 C230 Kompressor
M111.984
Power 105 kW (143 PS; 141 hp).
Applications:
- 1995-2006 Sprinter 214 / 314 / 414
- 1996-2001 Volkswagen LT 2.3
- 1996-1998 Ssangyong Musso 2.3
See also
- List of Mercedes-Benz engines
References
- Mercedes Benz E-Class - from Mercedes Club.cz (Czech Republic)
Source of the article : Wikipedia
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