Mercedes-Benz OM904 engine
The Mercedes-Benz OM904 is a 4.2 liter (4,249cc) Inline-four engine (I4) Overhead camshaft (SOHC) Diesel engine with 3 valves per cylinder.[1]. It is related to the OM906 Straight-six engine which has two extra cylinders, while the bore and stroke remain unchanged[2].
It launched in 1996 and had a Unit injector system to deliver fuel to every cylinder. It used a twin-scroll Turbocharger that was giving ~0.5-1.4atm of boost[3].
| Power: | 75-130kW (101-174hp) @ 2,200 rpm | Height: | 930mm (36.6in) |
|---|---|---|---|
| Torque: | 400-670Nm (295-494lb.ft) @ 1,200-1,600 rpm | Weight: | 405kg (893lbs) |
| Aspiration: | Twin-scroll turbocharger, intercooler | Injection: | Direct injection |
| Compression Ratio: | 18:1 | Boost: | 0.5-1.4atm |
| Bore: | 102mm (4in) | Launch Year: | 1996 |
| Stroke: | 130mm (5.1in) | ||
| Displacement: | 4,249cc (259.3CI) | ||
| Redline: | 2,300 | ||
| Length: | 944mm (37.2in) | ||
| Width: | 610mm (24in) |
Torque Curve
See also
References
- "Diesel Engine OM 904". www.idem.ir. Retrieved 2019-09-13.
- "Mercedes OM904 - OM906 engine specs, bolt torques, manuals". barringtondieselclub.co.za. Retrieved 2019-09-13.
- "The history of medium-duty engines at Mercedes-Benz". www.fleetnews.co.uk. Retrieved 2019-09-14.
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