8/4/2023 0 Comments Mercedes om 441 engine timing![]() ![]() 2 and 3 connecting rods are deformed, liners wear out. Frequent problems of the Mercedes 2.2 CDI OM646 Engine are badass.Updated all pressure and temperature regulators.Increased the size of the intercooler heat exchanger.The EGR valve was replaced on OM646, a new DPF and catalyst were installed.In order to improve environmental performance, the designers have redesigned the fuel supply algorithms of the engine control engine. To improve engine starting, ceramic glow plugs began to be used.Ĭompliance with Euro-5 environmental standards is the first characteristic feature of this engine. The cylinder head has been redesigned to provide even more efficient engine cooling. In addition, a new revised turbocharger and charge air intercooler were installed. ![]() Higher pistons and short connecting rods were used. The diesel compression ratio was lowered from 18.0 to 17.5. ![]() The updated OM646 EVO has 90 parts replaced. In 2006, Mercedes-Benz upgraded the OM646 diesel. ![]()
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