The new 16-liter engine, known as D16C, was introduced in the fall of 2003. The engine was a 6-cylinder direct injection diesel engine with an intercooler, turbocharger, and electronically controlled fuel injection that came in two power ratings: 550 horsepower and 610 horsepower. With a single cylinder head, overhead camshaft, pump injectors, and VEB retarder, the Volvo D16C550 engine has undergone a complete redesign. The engine complied with Euro 3 (EC01) emission standards.
The D16C 550 offers excellent engine adaptability by producing a high torque over a broad range of low crankshaft speeds. Only the top gears can produce a torque of 2800 Nm. Volvo’s electronic management system, or EMS (Engine Management System), regulates engine operation, which helps to reduce emissions and fuel consumption. Additionally, the system has a wide range of diagnostic and troubleshooting features.
Specifications
| Manufacturer | Volvo |
| Also called | D16C550 |
| Configuration | inline, diesel |
| Number of cylinders | 6 |
| Piston stroke, mm | 165 |
| Cylinder bore, mm | 144 |
| Displacement, cc | 16120 |
| Power output, hp | 550 |
| Torque output, Nm / rpm | 2800 |
| Euro standards | Euro 3 |
Heavy transport operations are the intended use for the D16C 550. It has a fully covered cylinder head, four valves per cylinder, and an overhead camshaft. This design offers quick gas exchange and a very low weight per unit of power. The air inlet’s shape and the positioning of the cylinder head’s valves minimize the incoming air’s rotational speed, which lowers the pressure drop and speeds up the filling of the combustible mixture. The combustion chamber is designed for an ideal combustion process.
High injection pressure is also produced mechanically by the D16C550 engine’s individual pump nozzles, which are powered by an overhead camshaft and a rocker arm with a roller. To produce a significant lift, the injection control cam’s profile is matched to the nozzle. The intake ports and valves are large in diameter to minimize pressure drop, and the cylinder head has a single common fuel supply line to the injectors.
The power steering pump, fuel and oil pumps, camshaft, and air compressor all have gear drives installed on the back side of the engine. Multi-V-belt drives power the coolant pump, fan, generator, and air conditioning compressor, all of which are situated in front of the engine. Such a practical solution offers good cooling, compactness, and low noise levels. Furthermore, the power take-off can be positioned on the back of the engine.
D16C550 marking explanation
| D | Motor fuel – diesel |
| 16 | Cylinder volume, l. |
| C | Engine Generation |
| 550 | Engine power – 550 HP |