New marine diesel engines by Cummins are now available in its Quantum series, Tier 3 certified by the US Environmental Protection Agency (EPA). To sell an engine or vehicle within the United States manufacturers must demonstrate compliance with the Clean Air Act and all applicable EPA regulations. Hence Cummins has now upgraded its popular Tier 2 certified QSK19 and QSK60 engines to comply with the more stringent Tier 3 standard.
Marine Diesel Engine: Cummins QSK19: Photo credit Cummins
A Tier 3 engine requires 50% reduction in particulate matter and a 20% reduction in nitrogen oxides compared to Tier 2 standards, which Cummins achieved through the application of advanced combustion technology without any need for after-treatment of engine exhaust gas emissions.The Tier 3-certified QSK19 and QSK60 feature the same premium base engine hardware and footprint as the existing MCRS product. Furthermore, the lubrication, cooling, air handling, fuel and exhaust systems are the same de... [More]
After a period of cooperation lasting about nine years, the joint venture between Cummins and Brunswick’s Mercury Marine division is to end. CumminsMerCruiser (CMD) was set up in 2002 as a 50/50 joint venture between Cummins and Brunswick’s Mercury Marine division to supply integrated diesel propulsion systems worldwide to commercial and recreational markets. Cummins supplied their engines below 15 liters and Mercury their MerCruiser diesels sourced from various engine builders including Isuzu/GM and Detroit Diesel’s VM engines. MerCruiser also provided their range of sterndrives. CMD , with offices in Charleston and Pessac, France, will be dissolved and the changeover of responsibilities will continue into 2012. Mercury and Cummins will work together to ensure a smooth orderly transition. [More]
Cummins is introducing a new high power diesel engine series comprising a V12, V16 and V20 engines of 71, 95 and 120 liter displacement respectively. Launch model is the V16 QSK 95 rated at 4,000 hp (2,985 kW) at 1,800 rpm. The second engine in the series to reach production will be the V20 cylinder QSK120 with an output of 5,000 hp (3,728 kW): the V12, as yet not defined, possibly QSK71, will have a power in the region of 3,000 hp (2,237 kW). The series has a high specification for reliability durability, economy and low emission delivering low through life cost for the engine. The new series is compliant with present and future emissions regulations, including EPA Tier 4, taking effect in 2015 using a Selective Catalytic Reduction (SCR) aftertreatment designed by Cummins to replace the exhaust muffler; is capable of achieving fuel savings of 5 to 10 percent, together with a significant reduction in carbon dioxide (CO2) emissions. [More]