Mercedes-Benz OM 642
The built in Berlin and Untertürkheim OM 642 engine is a diesel engine type with six cylinders in V configuration, common-rail direct injection and turbocharger, developed and produced by Daimler for use primarily in the Mercedes- Benz vehicles. The engine has an untypical for V6 engines, cylinder bank angle of 72 degrees.
These engines are installed in multiple power levels in cars of all Series, SUVs, vans from Mercedes since March 2005 and are (as of 2010 ) in the current production program of Mercedes -Benz.
The abbreviation " OM " stands for " motor oil " (engine, which is operated with light oil / diesel) and referred to since the beginning ( 1920 ) until today, the diesel engines of Daimler AG.
History
In March 2005, the OM 642 was 320 CDI C-Class 203 series used in the Mercedes model C for the first time. As of July 2005, the new V-engines were installed in the models E 280 CDI and E 320 CDI in the E-Class 211 series. The engine is a more modern design compared to the previous five- and six-cylinder in-line engines OM 647 and OM 648
The recent strong CDI engines are available in types E 280 CDI ( same name as the predecessor with the throttled OM 648) and E 320 CDI ( same name as the previous OM 648) now V6. Their advantages lie in a higher torque, higher performance, better in emission levels and lower production costs. In addition, they now fit thanks to the shorter length in the C-Class and the ML.
With the advent of the new OM 651 of the 280 CDI became the medium replaced by the new 150 kW four -cylinder in many series, which not only has a higher performance but also lower fuel consumption. In early 2010, however, a throttled in the Power 300 CDI was similar to the 250 CDI in the E-Class presented. With 150 kW and 500 Nm, it is in terms of performance at the same level as the four- cylinder (OM 651 ).
In the fall of 2010, the S-Class, R-Class and the current E models received an upgraded version of the 350 CDI, the OM 642 LS is called. It provides 190-195 kW and 620 Nm. The previous 350 CDI with 170 kW is now offered as the 300, the previous 300 CDI with 150 kW omitted.
Prototypes
In 2005 there was an experiment with a tipped with three turbochargers OM 642 in the showcar SLK 320 CDI Triturbo. There he made 210 kW and 630 Nm. The V6 engines are expected to power so technically have enough air upwards to venture into the areas of the V8 diesel OM 629. More details on this is not yet known, but there is a trend to replace the large eight-cylinder, at least in the diesel range by dual-charged, lighter and more fuel-efficient six-cylinder. At BMW example, there is already a 3 -liter six- cylinder with 225 kW. By comparison, the 4 -liter Mercedes V8 diesel also has only 235 kW.
Modular manufacturing
The motors are produced in a consistently used a modular system. All engines are produced in manufacturing Berlin -Marie Felde on an assembly line at ThyssenKrupp Krause GmbH. On the same basis also builds the eight-cylinder CDI OM 629.
Use and performance differentiation of the OM 642
As with the four-cylinder engines in the C- and E-Class (180 CDI/200 CDI/220 CDI/250 CDI), all reference numbers (280, 300, 320 and 350) relate to the V6 with the same engine capacity of 3.0 liters. Except for the model E 300 CDI is wrong here, the engine name is not the actual engine capacity match. The most powerful version of the engine is currently providing 195 kW (265 hp).
The same displacement versions with different power type OM 642 DE 30 LA red. with 140 kW and type OM 642 DE 30 LA engine with 165 kW/173 kW differ only on their motor periphery, by turbocharger, common-rail injection system and the engine controls ( no component differences between E 280 CDI and E 320 CDI).
OM 642 DE 30 LA red.
OM 642 DE 30 LA
OM 642 DE 30 LA LS
In addition, the engine was used with slight modifications in some Chrysler vehicles, such as in the Chrysler 300C 3.0 CRD, and Jeep Grand Cherokee
Swell
- Auto Motor und Sport 12/2010 - power increase in 2010
- Mercedes -Benz sheet ( price list)
- Maintenance information on Mercedes- Benz.com