Volvo Penta of the Americas today revealed the availability of a keel cooling option with D4 and D6 marine diesel engines to meet customer demands in the North American marine commercial market.
Volvo Penta is now offering factory-built keel-cooled engines for the entire line of marine commercial inboard and sterndrive D4 3.7-liter and D6 5.5-liter engines. The D4/D6 keel-cooled version uses a twin circuit design, with keel coolers for both the high-temperature engine block circuit and low-temperature charge air cooler circuit.
'Keel cooling provides unique advantages for commercial marine vessels,' said Jens Bering, manager product management for Volvo Penta North America. 'By eliminating the need for the seawater pump, these engines are ideal for vessels operating in water containing high amounts of sand, silt or other debris that can clog up open-circuit cooling systems. The result is reduced maintenance costs and minimized downtime.'
'The D4 and D6 engines are proven workhorses for the most demanding commercial marine applications,' said Bering. 'The keel-cooled versions are fully backed by Volvo Penta’s industry-leading warranty and service programs.'