Mercedes-Benz OM642 engine
Reciprocating internal combustion engine
Mercedes-Benz OM642 engine
The Mercedes-Benz OM642 engine is a 3.0 litres (2,987 cc), 24-valve, aluminium/aluminium block and heads diesel 72° V6 engine manufactured by the Mercedes-Benz division of Daimler AG as a replacement for the Mercedes straight-5 and straight-6 cylinder engines. By 2010 a BlueTEC version of the Mercedes Sprinter OM642 was released. The BlueTEC systems allowed the elimination of much of the EGR in that vehicle's engine, which as a result gave 188 horsepower (140 kilowatts) compared to the non-BlueTec engine's 154 horsepower (115 kilowatts). The engine features common rail Direct injection and a variable nozzle turbocharger. The injection system operates at 1,600 bar (23,000 psi), while the compression ratio is 18.0:1. The engine features a counter-rotating balance shaft mounted between the cylinder banks to cancel the vibrations inherent to the 72 degree V6 design, and the crankpins are offset by 48 degrees to achieve even 120 degree firing intervals. In some heavy vehicle applications, Mercedes...
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