mercedes-benz om668

The Mercedes-Benz OM668 engine is a 1. 7-litre diesel inline-four engine manufactured by the Mercedes-Benz division of Daimler AG. It was used in the Mercedes-Benz W168 from 1997 to 2004 and the Mercedes-Benz W414 from 2001 to 2005.
The OM 668 makes use of the common rail system. Compared to the otto engine M 166 it has 4 valves per cylinder instead of two. Two chain driven overhead camshafts are used. The intake camshaft is driven by a chain, the exhaust camshaft is connected to the intake camshaft with a gear. Another chain drives the oil pump from the crankshaft. All engines have a turbocharger and all engines with more than 44 kW also have an intercooler. In 1997 the OM 668 was the smallest diesel engine by Mercedes-Benz....