Field testing of the biggest generator set ever developed by Cummins will begin at an Australian mine site later this year.
The 3.5 MW C3000-series generator set incorporates Cummins’ new QSK95 engine, a 95-litre V16 that achieves higher output from 16 cylinders than competitors’ 20-cylinder engines.
The C3000-series marks the start of a new line of diesel and gas generator sets from Cummins.
A high-speed diesel (1200 to 1800 rpm) with an output of over 4000 hp, the QSK95 will eventually become available for a range of high-hour, high-load applications including power generation, mine trucks and excavators, oil and gas drilling modules, locomotives and marine vessels.
“The new C3000-series generator set will change expectations of what can be achieved by high-speed diesel technology, marrying industry-leading power density with increased durability,” says Tony Satterthwaite, president of Cummins’ power generation business.
“Designed as a global product platform, the C3000-series will be able to be used anywhere in the world for standby, prime or continuous duty applications.”
When the larger 120-litre, 20-cylinder QSK120 version of the QSK95 engine becomes available, Cummins’ generator set product line will extend beyond 4 MW.
“Our natural gas-powered generator set will be designed specifically for gas, not just a derivative of the diesel product line,” says Satterthwaite.
The 3.5 MW C3000-series leverages Cummins’ ‘Power of One’ capability, with single-company design and manufacture of all key systems. The QSK95 engine, alternator and controls have all been developed simultaneously with the C3000-series with the goal of creating a fully integrated and optimised generator set.
The 95-litre engine enables fast ramp-up to maximum power, taking advantage of faster transient response from four compact turbochargers.
The modular common rail fuel system with up to 2200 bar (32,000 psi) high-pressure injection also results in smoother, quieter and more fuel efficient operation.
The high power density of the QSK95 is achieved with a hardened power cylinder and single-piece forged steel piston. The increased strength also contributes to extended life-to-overhaul with minimum mid-life intervention.
