Turbocharging is one of the technologies that allows modern marine diesel engines to produce substantial power from relatively compact engine packages. A turbocharger uses energy contained in the engine’s exhaust…
A marine engine cooling system has one fundamental responsibility: remove the heat generated by combustion and keep the engine operating within its designed temperature range. Unlike an automotive engine that…
Marine diesel fuel consumption is determined by far more than the horsepower printed on an engine specification sheet. The actual amount of fuel a vessel burns depends on the relationship…
High-speed and medium-speed marine diesel engines are both established propulsion technologies, but they are engineered around different operating speeds, power characteristics and vessel requirements. In general marine-engine terminology, high-speed diesel…
Horsepower, torque and displacement are three of the most important specifications when comparing marine diesel engines, but they describe different characteristics of the same power-producing system. Horsepower expresses the rate…
Choosing a marine diesel engine is fundamentally a vessel-engine matching exercise. The correct engine is determined by the boat’s displacement, hull design, target speed, operating load, annual running hours, propulsion…
There is no single marine diesel engine brand that is objectively the best for every vessel. Yanmar, Volvo Penta, Cummins, Caterpillar, MAN and mtu occupy different positions across recreational boating,…
Choosing between a marine diesel and gasoline engine is ultimately a decision about how the boat will be used, how much power it needs, how many hours it will operate,…
Marine diesel engines are internal-combustion powerplants designed to convert the chemical energy in diesel fuel into mechanical power for marine propulsion or onboard power generation. In a conventional four-stroke diesel,…
Marine inboard engines are propulsion engines installed inside the vessel, with power transferred through a transmission or gearbox to a propeller shaft, pod, waterjet or other propulsion system. Unlike an…
