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Four-cylinder OM 611

In 1997, a 4-cylinder diesel model with common rail direct fuel injection appeared. OM 611 DE 22 LA was the first unit using this technology in passenger cars. OM 611 Engine was sold for the first time in September 1997 in the first generation of the popular C-Class under name C 220 CDI (W202).

In comparison with the previous model of the engine, OM 611 increased its common rail power by 30%, torque by 50%, and reduced fuel consumption by 10%. A catalytic converter was used for exhaust gas treatment. As in the new generation of the engine, efficiency increased; it did not generate a sufficient amount of heat at low external temperatures to warm the inside of the car. The problem was solved with a heating element which resembled a radiator.

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