Volvo Penta’s 4-cylinder D4-300 is developed from the latest design in modern diesel technology. The engine has common rail fuel injection system, double overhead camshafts, 4 valves per cylinder, turbocharger and aftercooler. Together with a large swept volume and the EVC system (Electronic Vessel Control), this results in world-class diesel performance, combined with low emissions. The engine is extremely compact for its high output.

World-class performance

The common rail fuel injection system, controlled by EVC, in combination with a large swept volume, ensures outstanding torque during acceleration, with virtually no sign of smoke. This matched with the engine’s high load carrying capability creates a sporty feeling and power, when needed.

Compact and robust

The engine is extremely compact for its large swept volume and high output. With the rear end transmission, driving the high-pressure injection pump and the camshafts, a high degree of integrated systems, a high-efficiency after cooler, a marinization performed with very few hoses, and a fully symmetric engine, the package simply gets that compact.

The common rail injection system in combination with electronics and an advanced combustion system are setting new standards in minimizing noxious emissions and particulates. The engine complies with IMO NOx limits and the comprehensive emission requirements EU RCD and US EPA Tier 2.
Technical Specification
Spec    Value
Crankshaft power, kW (hp)    221 (300)
Propeller shaft power, kW (hp)    212 (288)
Engine speed rpm    3500
Displacement, l (in^3)    3.7 (224)
Number of cylinders    4
Bore / stroke, mm (in)    103 / 110 (4.06/4.33)
Compression ratio    17.5:1
Dry weight with HS63AE, kg (lb)    559 (1232)