MAN D2156 – engine of joint Hungarian-German production on diesel fuel with direct injection of a combustible mixture and water cooling.
This engine is widely used on Ikarus 250 buses. RABA-MAN D 2156 are water-cooled and have a combined forced lubrication system. Fuel system operation is provided by a Bosch fuel pump, STA injection regulator and injectors. The air is cleaned by an oil bath air cleaner and a cyclone pre-filter.
|Configuration||Horizontal diesel 6-cylinder naturally aspirated engine|
|Number of cylinders||6|
|Firing order||1 – 5 – 3 – 6 – 2 – 4|
|Piston stroke, mm||150|
|Cylinder bore, mm||121|
|Power output, hp||192 / 2100|
|Torque output, Nm / rpm||695,5 / 1300|
The RABA-MAN D 2156 engine provides acceptable dynamics (100 km / h), but weak acceleration due to low power. This motor has good maintainability, is quite reliable and simple. Its disadvantages, in addition to insufficient power, include a small resource, which is also a consequence of the low power of the motor and, as a result, constant operation at high speeds. Over the years, transport on such engines becomes more and more noisy due to a burnout of the muffler or improper operation of the engine, and also very smoky.
Main engine elements
- Crankcase ventilation pipe;
- Alternator V-belt tensioner;
- Power steering pump V-belt tensioner;
- Equalizing air cylinder;
- Oil cooler;
- Air compressor;
- Location of engine number and type designation.
- Water pump;
- Tachometer sensor;
- Power steering pump;
- Fuel pump;
- Oil filter;
- Cylinder head cover;
- Place of connection of the starting device;
- Oil filler neck;
- Flywheel housing;
- Cooling water manifold;
- Oil dipstick;
- Timing gear cover.
MAN D2156 engine reference data
|Speed controller||dual mode|
|Air Filter||dry, with removable paper element and clogging indicator|
Explanation of marking MAN D 2156
|D||The fuel that the engine runs on is diesel|
|21||Cylinder diameter, mm – 121mm|
|5||Piston stroke, mm – 150mm|
|6||Number of working cylinders|