Information on the 4 Cylinder Inline Engine OM 626 Generation

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Engine OM 626 D16 SCR is a newly developed 4-cylinder
inline diesel engine with common rail direct injection and a
turbocharger. The engine is available in two power variants
(85 and 100 kW), each with a displacement of 1.6 liters, and
will be introduced from September 2014 in model series 205.
An overview of the main features of engine OM626:
• Special two-mass flywheel
• Variable oil pump
• Two intake and exhaust valves per cylinder
• Camshaft drive via timing chain
• Turbocharger with variable turbine geometry (VTG)
• Two-stage, water-cooled exhaust gas recirculation
• Optimized thermal management
• ECO start/stop function
• Exhaust treatment by the injection of urea (AdBlue®) into
the exhaust tract
Engine OM626 incorporates a crankcase made of cast iron.
The ventilation bores between the cylinders are cast in. With-
several transverse and longitudinal struts, it has extremely-
high rigidity.
Engine oil pan
The vehicle is fitted with a two-piece engine oil pan made
of aluminum alloy. The ribbing on the oil pan is designed to
reduced noise emissions and guarantee the required strength
for the attachment of the ancillaries.
Oil level check switch
The engine oil levels in the oil level check switch and in the
engine oil pan equalize via a feed bore and a drain bore. The
float is deflected in relation to the oil level. The reed contact
is open at engine oil levels below “Min.”, and is closed by the
magnetic field of the ring magnet at engine oil levels above
“Min.”.
Crank assembly, general
The crank assembly provides an almost square ratio of stroke
to bore. This ratio permits a large valve diameter and thus
optimum filling of the combustion chamber.
Pistons
The pistons installed are made of steel with special oil scra-
per rings. The oil scraper rings are U-shaped and thus highly
flexible. This flexibility allows the rings to conform to the
distortions of the cylinder barrels which result from the influ-
ences of temperature and pressure. This reduces friction and
energy expenditure.

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29 сен 2024

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Комментарии : 22

@overtaxed3628 4 года назад

The OM 622 and OM 626 engines are four-cylinder - diesel engines for Daimler AG and come from a strategic collaboration with Renault-Nissan. The OM 626 was first used in autumn 2014 in two C-Class models (205 series). The basic engine is identical to Renault's R9M engine, and is produced by Renault at its factory in Cléon (France). The engine was then completed at the Mercedes factory in Bremen. Mercedes-specific parts include a start-stop function, auxiliary units (compressor and air conditioning generator), a special double-mass flywheel, a modified engine control unit with additional functions and exhaust after-treatment. The OM 626 and Renault R9M are among the world's first diesel engines to have steel pistons instead of aluminum pistons. Steel pistons with reduced stress piston rings from the supplier Mahle are used. [1] Steel pistons are said to offer advantages in terms of consumption and power compared to aluminum pistons due to lower friction and better thermal behavior.

@abdullahturkoglu5657 4 года назад

Bu videonun türkçesi yokmu acaba

@armandofaranda4597 2 года назад

Ouna macchina che a questo motore è a 90000km e .i consu.a troppo olio mi sapreste dirmi che può essere grazie

@armandofaranda4597 2 года назад

Se vorrei comprarlo nuovo a chi mi dovre rivolgere grazie

@Daniel-jv5yr Год назад

I want to change my coolant. Does anybody know if there are bleeder ports or it just flushes the air by itself?

@MBOwnersClub Год назад

To change the coolant on the OM 626 engine, you will need to follow these steps: First, ensure that the engine is cool to the touch before you begin work. Locate the coolant drain plug, which is typically located on the bottom of the radiator. If you are unsure where the drain plug is located, consult your owner's manual or a professional mechanic. Place a container under the drain plug to catch the old coolant. Open the drain plug and allow the old coolant to drain into the container. Once all the coolant has drained out, close the drain plug. Fill the engine with distilled water until the coolant overflow tank is full. Start the engine and let it run for about 5-10 minutes, allowing the water to circulate through the engine and flush out any remaining old coolant. Turn off the engine and allow it to cool. Drain the water from the engine using the same process as before. Refill the engine with a 50/50 mix of antifreeze and distilled water. Check your owner's manual for the recommended coolant type and amount. Start the engine and let it run for a few minutes to ensure that the new coolant is circulating properly. Check the coolant level in the overflow tank and add more as necessary. Dispose of the old coolant properly, as it can be hazardous to the environment. It is recommended to consult a professional mechanic if you are unsure about any steps or have never changed the coolant before.

@Daniel-jv5yr Год назад

@@MBOwnersClub Thanks! I have changed the coolant in other engines. For example, on a Dacia with similar engine made by renault it had 2 bleeder valves. On om626 (renault engine tweaked by mercedes) I was not sure.