Cummins MerCruiser Diesel QSB5.9

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Cummins MerCruiser Diesel (CMD) has been fine-tuning its new Quantum series of diesels. For those unfamiliar with the QSB platform, it's populated by a  5.9L powerhouses ranging from 230 to 370 hp. Both recreational and commercial models of marine diesel are offered. The most recent addition is a potent new 425-hp version replete with turbocharger and a 24-valve cylinder head.

Truly a state-of-the-art creation, the new Cummins MerCruiser Diesel QSB5.9 features high-pressure, common-rail fuel injection. for those unfamiliar with the technology, it's renowned for the dividends it pays in improved fuel economy, instant starting and particularly low emissions On the aesthetic side of the balance sheet. Smoke and smell are virtually nonexistent. Plus the engine is easy on the ears, with noise levels at idle quieter by about  80 percent.

Predictably, engine operations are electronically controlled, with data communicated to the helm station by way of  the Mercury SmartCraft information pathway. Data includes the engine's vital signs (temperatures and pressures), and of course fuel flow. Self diagnostics is also part of the bundle with formation shown on CMD's digital Display View. An optional set of analog gauges speak SmartCraft. Throttle and shift controls are electronic, and the system accommodates either  single or dual engines linked to as many as six stations. Engine synchronization is part of the SmartCraft  package.

Cummins MerCruiser Diesel's QSB 5.9 is a common rail powerhouse that's easy on the ears.

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