Engine Mercedes OM612

The Mercedes Benz OM612 engine is a 5-cylinder diesel engine with 2 overhead camshafts that drive 20 valves through pushrods. Compared to its predecessor OM604, it has 30% more power, 50% more torque and 10% less fuel consumption. An oxidation catalyst is used to clean the outlet gases. As the efficiency of the new generation engines was increased, there was not enough heat to heat the passenger compartment at low temperatures. Continue reading Engine Mercedes OM612

Engine Mercedes M272 KE/DE 35

The M272 E 35 power unit was the evolution of the Mercedes V6 and was supposed to replace the M112 E32 and M112 E37. In addition to the 3.5-liter engine, the lineup includes the 2.5-liter M272 E25 and the 3.0-liter M272 E30. The development of the 272 series was carried out on the basis of the M112, which includes an aluminum BC with a camber of 90 degrees and 106 mm between the cylinders. Silumin steel piston liners with a diameter of 92.6 mm. And the new crankshaft received 86 mm of travel. The pistons and forged connecting rods are somewhat lighter. Continue reading Engine Mercedes M272 KE/DE 35

Engine Mercedes M273 E55/E46

The Mercedes M273 engine debuted in the S-class car in the fall of 2005 and was subsequently installed on the E-, S-, CLS-, R-, CL-, SL- and CLK-class models, as well as off-road vehicles of the ML, GL and G series. family of gasoline V-shaped 8-cylinder internal combustion engines from Mercedes-Benz. It is the heir to the M113 series. When creating the M273 E55 engine, the six-cylinder M272 E35 was taken as a basis, the cylinder block of which was modified for the V8 configuration, the cylinders increased in diameter, a long-stroke crankshaft was installed, the inter-cylinder distance remained the same – 106 mm. Continue reading Engine Mercedes M273 E55/E46

Engine Mercedes M113 E50

The M113 E50 engine is an unusually lightweight, compact engine (unlike its predecessor M119) was a continuation of the line of three-valve M112 engines. The engineers added two more to the six cylinders and got the M113. Due to its compactness, it was installed on all rear- and all-wheel drive Mercedes models. Each cylinder has three valves (two inlet and one outlet), and in the M113 engine, the area of ​​the outlet valve is 30% less than the total area of ​​the two outlet valves in its predecessor, in addition, it has less weight (the rod is filled with sodium). Continue reading Engine Mercedes M113 E50

Engine Mercedes M111 E23/E23 ML

In 1995, the last and most voluminous engine in the M111 line of engines came out – this is a 2.3-liter M111 E23 engine. It was intended to replace the completely outdated M102 E23 engine technology. At the heart of the E23 is a cast iron cylinder block, with a bore of 90.9 mm, the piston stroke was increased to 88.4 mm, which is 7.9 mm more than in the 2.0-liter version. Continue reading Engine Mercedes M111 E23/E23 ML

Engine Mercedes M112 E37

In 2002, another version of the M112 engine appeared – the E37 with a volume of 3.7 liters. This option is recognized as the largest in the series. To increase the volume, the BC was changed for a piston with a large diameter. The cylinder head does not differ from the base M112: it has one camshaft and 3 valves per cylinder. The head uses the IFGR system, hydraulic lifters and an intake manifold with an adjustable length. The average resource of the timing chain drive reaches 200,000 km, which is an undoubted plus. The disadvantages include excessive oil consumption, oil leaks, delamination of the crankshaft pulley damper. As with all engines, high-quality consumables and gentle driving style are relevant for the M112 E37. Continue reading Engine Mercedes M112 E37

Engine Mercedes M112 E32

In 1997, the new M112 E32 engine replaced the old E32 engine from the M104 series. The main difference between the new series and the old one was that now the motors became V-shaped with a breakup angle of 90 degrees. The move away from the in-line arrangement of the cylinders allowed the engine to be made more compact and to unify 6- and 8-cylinder engines as much as possible, which, in turn, made it possible to install both series of engines in the same car models. Continue reading Engine Mercedes M112 E32