Mercedes-Benz OM 611 / OM 612 / OM 613

Mercedes Benz
OM 611, OM 612, OM 613
Manufacturer:	Mercedes Benz
Production period:	1997-2006
Design:	Inline four cylinder OM 611 Inline five cylinder OM 612 Inline six cylinder OM 613
Engines:	2.1 liters (2148 cm³) 2.2 liters (2151 cm³) 2.7 liters (2685 cm³) 3.0 liters (2950 cm³) 3.2 liters (3222 cm³)
Previous model:	OM 604 (4-cylinder) OM 605 (5-cylinder) OM 606 (6-cylinder)
Successor:	OM 646 (4-cylinder) OM 647 (5-cylinder) OM 648 (6-cylinder)

The OM 611 by Mercedes-Benz is a four cylinder - diesel engine with common-rail direct injection . It was presented in 1997 in the C 220 CDI model. Vehicles with this engine type mostly have "200 CDI" and "220 CDI" in their sales designation.

The article also deals with engines OM 612 and OM 613 with five or six cylinders, also in- line engines that are technically closely related to the OM 611. Vehicles with five cylinders of this engine type mostly have "270 CDI" in their sales designation, with six-cylinder engines mostly "320 CDI".

These engines were used from 1997 to 2005 mainly in the C-Class W202 , the E-Class W210 , as a six-cylinder also in the S-Class W220 , and in vans (" Sprinters ").

technology

General

The Mercedes-Benz OM 611 is a four-cylinder diesel engine with two overhead camshafts that operate the 16 valves via bucket tappets . The OM 611 was first sold in September 1997 in the C-Class under the designation C 220 CDI. Compared to the predecessor model OM 604, the OM 611 has 30% more power, 50% more torque and 10% less consumption. An oxidation catalytic converter is used for exhaust gas cleaning. Since the efficiency of the new generation of engines has been increased, there is not enough heat available for sufficient interior heating when the outside temperature is low. This problem was countered in the CDI series II by installing an electric auxiliary heater and in the CDI series I with a diesel-powered auxiliary heater. The camshaft is driven by a duplex roller chain.

injection

A special feature is the first-time use of common rail direct injection from Bosch in a Mercedes-Benz engine model. The fuel is distributed to the injection nozzles via a common line (common rail) in which the fuel pressure is kept evenly high (up to 1350 bar) by a high-pressure pump. The solenoid valve-controlled injection nozzles inject it into the combustion chamber through six holes. In the pilot injection, a small amount of fuel is introduced into the cylinder before the actual combustion, after which the nozzle closes again until the main injection. As a result, the amount of fuel in the combustion chamber at the time of self-ignition (after ignition delay ) is low, which ensures significantly improved smoothness. In the CDI series II, the injection system was supplemented by a high-pressure control system using a pressure control valve, a quantity control valve, a mechanical fuel feed pump and a fuel temperature sensor.

Charging

The engine is ventilated via a turbocharger with a bypass valve (so-called wastegate ). Since the turbocharger is driven more and more with increasing engine speed due to the higher amount of exhaust gas, the compressor itself pumps more and more air. This in turn leads to an even stronger exhaust gas flow, which in turn drives the turbine even more. In order to avoid damage from mechanical or thermal overloading, the charge must be limited ( boost pressure control ). A bypass valve was used for this in the CDI series I, which is opened at a certain boost pressure and diverts the exhaust gases past the charger into the exhaust tract. A further increase in the turbine speed is thus prevented. In the CDI series II, the turbocharger was replaced by a VNT charger . VNT stands for Variable Nozzle Turbocharger (German: Variable Turbine Geometry Charger) and means that adjustable guide vanes are attached to the exhaust side . It is controlled by means of negative pressure. This technology leads to a faster build-up of the boost pressure in the lower speed range. This is noticeable through better cylinder filling and thus higher torque. A charge air cooler was installed to cool the hot charge air to an optimal temperature .

Intake tract

The EKAS (intake duct shutdown) is used in the intake tract of the OM 611 . One of the two inlet ports per cylinder can be switched off at low engine speeds (tangential port). The sucked in air now flows completely through the specially shaped 2nd channel (swirl channel). The resulting swirl leads to a better mixture formation, whereby a better combustion is achieved. In the CDI series I, the EKAS is pneumatically controlled, while the CDI series II has an electronically controlled and steplessly working EKAS. Another innovation in the CDI series II is the pneumatically controlled exhaust gas recirculation valve . It reduces excess air and lowers temperature peaks by adding exhaust gases to the fresh air that is drawn in. This reduces nitrogen oxide emissions and combustion noises. To regulate the exhaust gas recirculation, a hot-film air mass meter is installed, which enables an exact determination of the intake air mass.

Five-cylinder OM 612 and six-cylinder OM 613

In parallel to the OM 611, the OM 612 (five-cylinder) and OM 613 (six-cylinder) series were developed, which form an engine family with the four-cylinder brother OM 611. These engines have the same cubic capacity per cylinder and are in-line engines. Their pistons, connecting rods, injection nozzles, valves, glow plugs and other components are identical parts, with corresponding advantages in terms of procurement costs and storage. All engines of the OM 612 and OM 613 series are based on the CDI series II.

The OM 612 DE 30 LA is a special feature. This engine is based on the OM 612 DE 27 LA, but AMG increased the stroke in order to achieve a larger displacement. Due to the increased engine power and torque, numerous components had to be redesigned and adapted to the increased load. The crankshaft drive was strengthened, the cylinder head screw connections optimized, an oil pump with a larger delivery capacity was used and reinforced pistons with oil spray cooling were installed in the piston crowns. The glow system has been redesigned and ensures a shorter pre-glow time thanks to the higher glow temperature. The idling behavior could be optimized through improved control of the afterglow behavior.

In order to ensure maximum power and torque output even at high outside temperatures, an unusual design was used for the charge air cooling : the charge air cooler is arranged directly next to the engine and equipped with an air-water heat exchanger. The heat is transferred via a separate low-temperature water circuit to two coolers in the front that are separate from the actual engine cooler.

In contrast to the regular OM 612 engines, the guide vanes of the VNT turbocharger are adjusted by the engine electronics; the adjustment process is therefore faster than with pneumatic control. The exhaust gas recirculation valve was modified and also received an electronic control. Together with the close-coupled thin-walled front wall catalyst it provides for improved emission control. The exhaust system has a pipe diameter of 76 mm and thus contributes to increased performance.

Data

Sales description	Engine type *	Model	Power at (1 / min)	Torque at (1 / min)	CDI generation	construction time
4 cylinder
Displacement: 2.1 L 2148 cm³, bore × stroke: 88 × 88.3 mm
Sprinter 208 CDI, 308 CDI, 408 CDI ( W 901–904 )	OM 611 DE 22 LA	611.987	60 kW (82 hp) at 3800	200 Nm at 1400-2600	CDI I	2000-2006
Sprinter 211 CDI, 311 CDI, 411 CDI ( W 901–904 )		611.981	80 kW (109 PS) at 3800	270 Nm at 1400-2400	CDI II	2000-2006
Sprinter 213 CDI, 313 CDI, 413 CDI ( W 901–904 )			95 kW (129 hp) at 3800	300 Nm at 1600–2400	CDI II	2000-2006
C 200 CDI ( W / S 202 )	OM 611 DE 22 LA red.	611.960 red.	75 kW (102 PS) at 4200	235 Nm at 1500-2600	CDI I	1999-2001
C 220 CDI ( W / S 202 )	OM 611 DE 22 LA	611.960	92 kW (125 PS) at 4200	300 Nm at 1800-2600	CDI I	1999-2001
C 200 CDI ( W / S 203 )	OM 611 DE 22 LA red.	611.962 red.	85 kW (115 PS) at 4200	250 Nm at 1400-2600	CDI II	2000-2003
C 220 CDI ( W / S / CL 203 )	OM 611 DE 22 LA	611,962	105 kW (143 hp) at 4200	315 Nm at 1800-2600	CDI II	2000-2003
E 200 CDI ( W / S 210 )	OM 611 DE 22 LA red.	611.961 red.	85 kW (115 PS) at 4200	250 Nm at 1400-2600	CDI II	1999-2003
E 220 CDI ( W / S / VF 210 )	OM 611 DE 22 LA	611.961	105 kW (143 hp) at 4200	315 Nm at 1800-2600	CDI II	1999-2003
Displacement: 2.2 L 2151 cm³, bore × stroke: 88 × 88.4 mm
Vito 108 CDI ( W 638 )	OM 611 DE 22 LA red.	611.980 red.	60 kW (82 hp) at 3800	200 Nm at 1400-2600	CDI I	1999-2003
Vito 110 CDI, V 200 CDI ( W 638 )			75 kW (102 PS) at 3800	250 Nm at 1600–2400	CDI I	1999-2003
Vito 112 CDI, V 220 CDI ( W 638 )	OM 611 DE 22 LA	611.980	90 kW (122 hp) at 3800	300 Nm at 1800-2500	CDI I	1999-2003
C 200 CDI ( W / S 202 )	OM 611 DE 22 LA red.	611.960 red.	75 kW (102 PS) at 4200	235 Nm at 1500-2600	CDI I	1998-1999
C 220 CDI ( W / S 202 )	OM 611 DE 22 LA	611.960	92 kW (125 PS) at 4200	300 Nm at 1800-2600	CDI I	1997-1999
E 200 CDI ( W / S 210 )	OM 611 DE 22 LA red.	611.961 red.	75 kW (102 PS) at 4200	235 Nm at 1500-2600	CDI I	1998-1999
E 220 CDI ( W / S 210 )	OM 611 DE 22 LA	611.961	92 kW (125 PS) at 4200	300 Nm at 1800-2600	CDI I	1997-1999
5 cylinder
Displacement: 2.7 L 2685 cm³, bore × stroke: 88 × 88.3 mm
Sprinter 216 CDI, 316 CDI, 416 CDI, 616 CDI ( W 901–905 )	OM 612 DE 27 LA	612.981	115 kW (156 hp) at 3800	330 Nm at 1400-2400	CDI II	2000-2006
G 270 CDI ( W 463 )		612.965	115 kW (156 hp) at 3800	400 Nm at 1800–2400	CDI II	2002-2006
ML 270 CDI ( W 163 )		612.963	120 kW (163 hp) at 4200	370 Nm at 1600–2800 (with manual transmission)	CDI II	1999-2005
				400 Nm at 1800–2600 (with automatic transmission)	CDI II	1999-2005
C 270 CDI ( W / S 203 )		612,962	125 kW (170 hp) at 4200	370 Nm at 1600–2800 (with manual transmission)	CDI II	2000-2003
				400 Nm at 1800–2600 (with automatic transmission)	CDI II	2000-2003
				400 Nm at 1800-2800	CDI II	2003-2005
CLK 270 CDI ( C 209 )		612.967	125 kW (170 hp) at 4200	400 Nm at 1800–2800 (with manual transmission)	CDI II	2002-2005
				400 Nm at 1800–2600 (automatic transmission)	CDI II	2002-2005
E 270 CDI ( W / S / VF 210 )		612.961	125 kW (170 hp) at 4200	370 Nm at 1600–2800 (with manual transmission)	CDI II	1999-2003
				400 Nm at 1800–2800 (with automatic transmission)	CDI II	1999-2003
Displacement: 3.0 L 2950 cm³, bore × stroke: 88 × 97 mm
C 30 CDI AMG ( W / S / CL 203 )	OM 612 DE 30 LA	612.990	170 kW (231 hp) at 3800	540 Nm at 2000	CDI II	2002-2004
6 cylinder
Displacement: 3.2 L 3222 cm³, bore × stroke: 88 × 88.3 mm
E 320 CDI ( W / S 210 )	OM 613 DE 32 LA	613.961	145 kW (197 hp) at 4200	470 Nm at 1800-2600	CDI II	1999-2003
S 320 CDI ( W / V 220 )		613.960			CDI II	1999-2003

 * Engine designation is encoded as follows: OM = oil engine (diesel), series = 3 digits, DE = direct injection, displacement = deciliters (rounded), A = exhaust gas turbocharger, L = charge air cooling, red. = reduced power

Web links

Commons : Mercedes-Benz OM 611  - collection of pictures, videos and audio files

Commons : Mercedes-Benz OM 612  - collection of pictures, videos and audio files

Individual evidence

1. ↑ http://mercedes-typen.de/blog/om-611-612-613.html  ( page no longer available , search in web archives )  Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.  
2. ↑ http://media.daimler.com/nc/dcmedia/0-921-614820-49-1014331-1-0-0-1014321-0-1-12759-614216-0-0-0-0-0 -0-0.html? TS = 1271087273632  ( Page no longer available , search in web archives )  Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.  
3. ↑ http://media.daimler.com/nc/dcmedia/0-921-865331-49-828223-1-0-0-828229-0-1-12759-614216-0-0-0-0-0 -0-0.html? TS = 1271087278154  ( Page no longer available , search in web archives )  Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.  
4. ↑ http://home.datacomm.ch/pborgschulte/Mercedes-Benz_Baureihen_ab_1960.pdf
5. ↑ http://media.daimler.com/dcmedia/0-921-658894-49-784086-1-0-0-0-0-1-11694-854934-0-1-0-0-0-0 -0.html  ( page no longer available , search in web archives )  Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.  
6. ↑ http://media.daimler.com/nc/dcmedia/0-921-658717-49-799587-1-0-0-799592-0-1-12759-614216-0-0-0-31-0 -0-0.html? TS = 1271095828794  ( Page no longer available , search in web archives )  Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.  
7. ↑ Archived copy ( Memento of the original dated February 22, 2014 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. 
8. ↑ 2000 Mercedes-Benz C 200 CDI Estate S 202 car specifications, auto technical data - performance, fuel economy, emissions, dimensions 86427. Retrieved on March 24, 2019 . 
9. ↑ Mercedes C-Class. March 4, 2016, accessed March 24, 2019 . 
10. ↑ Mercedes Benz W203 Class C 200 CDI Technical Specs, Dimensions. Retrieved March 24, 2019 . 
11. ↑ Mercedes Benz W203 Class C 220 CDI Technical Specs, Dimensions. Retrieved March 24, 2019 . 
12. ↑ Mercedes Benz E Class (W210) 200 CDI Technical Specs, Dimensions. Retrieved March 24, 2019 . 
13. ↑ Mercedes Benz E Class (W210) 220 CDI Technical Specs, Dimensions. Retrieved March 24, 2019 . 
14. ↑ Mercedes Benz V Class (W638) 200 CDI Technical Specs, Dimensions. Retrieved March 24, 2019 . 
15. ↑ Mercedes Benz W202 Class C 200 CDI Technical Specs, Dimensions. Retrieved March 24, 2019 . 
16. ↑ Mercedes Benz W202 Class C 220 CDI Technical Specs, Dimensions. Retrieved March 24, 2019 . 
17. ↑ Mercedes Benz E Class (W210) 200 CDI Technical Specs, Dimensions. Retrieved March 24, 2019 . 
18. ↑ Mercedes Benz E Class (W210) 220 CDI Technical Specs, Dimensions. Retrieved March 24, 2019 . 
19. ↑ Archived copy ( Memento of the original dated February 22, 2014 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. 
20. ↑ 2006 Mercedes-Benz G 270 CDI G 463 car specifications, auto technical data - performance, fuel economy, emissions, dimensions 168795. Retrieved on March 24, 2019 . 
21. ↑ 2001 Mercedes-Benz ML 270 CDI W 163 car specifications, auto technical data - performance, fuel economy, emissions, dimensions 128018. Retrieved on March 24, 2019 . 
22. ↑ 2001 Mercedes-Benz ML 270 CDI Automatic W 163 car specifications, auto technical data - performance, fuel economy, emissions, dimensions 128304. Retrieved on March 24, 2019 . 
23. ↑ Mercedes Benz W203 Class C 220 CDI Technical Specs, Dimensions. Retrieved March 24, 2019 . 
24. ↑ Archived copy ( memento of the original from January 8, 2013 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. 
25. ↑ 2004 Mercedes-Benz C 270 CDI W 203 car specifications, auto technical data - performance, fuel economy, emissions, dimensions 118382. Accessed March 24, 2019 . 
26. ↑ 2002 Mercedes-Benz CLK 270 CDI C 209 car specifications, auto technical data - performance, fuel economy, emissions, dimensions 96613. Retrieved on March 24, 2019 . 
27. ↑ 2002 Mercedes-Benz CLK 270 CDI Automatic C 209 car specifications, auto technical data - performance, fuel economy, emissions, dimensions 96514. Accessed March 24, 2019 . 
28. ↑ Mercedes Benz E Class (W210) 270 CDI Technical Specs, Dimensions. Retrieved March 24, 2019 . 
29. ↑ Mercedes E-Class. March 4, 2016, accessed March 24, 2019 . 
30. ↑ Mercedes Benz C (W203) Sport Coupe 30 CDI AMG Technical Specs, Dimensions. Retrieved March 24, 2019 . 
31. ↑ Mercedes Benz E Class (W210) 320 CDI Technical Specs, Dimensions. Retrieved March 24, 2019 . 
32. ↑ Mercedes Benz W220 Class S 320 CDI Technical Specs, Dimensions. Retrieved March 24, 2019 .