Engine M104 E32

Mercedes Benz M104 – 6-cylinder in-line engine with a cast-iron block, volume (respectively) 3.0 liters. and 3.2 l with a variable valve timing system. Replaced a motor marked M103. On engines without an ignition distributor, the intake camshaft was equipped with an electro-hydraulic clutch to change the valve timing. The phase change took place without smooth adjustment – only two extreme positions (“earlier” – “later”).
Continue reading Engine M104 E32

Engine 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 M113 E50

Engine 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 It was intended to replace the completely outdated M102 E23 engine technology.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. In fact, this is the same 2-liter E20 engine, but slightly modernized. Cylinder head, 2 camshafts, 4 valves per cylinder, hydraulic lifters, timing chain drive, ECU from Bosch ME2.1 – all these are the same components as on the E20. Even the compressor version of the E23ML had the same Eaton M62 compressor with a mechanical supercharger, which was driven by a drive belt through an electromagnetic clutch.
Continue reading Engine M111 E23 / E23 ML