Cummins extend power capability at MINExpo
Manufacturer to show extensive ‘smallest-to-largest’ off-highway engine display in Las Vegas
CUMMINS Inc. will be displaying a 49hp to 4,000hp (37kW to 2,983kW) engine line-up at MINExpo in Las Vegas from 24–26 September 2012.
The line-up will represent the most extensive ‘smallest-to-largest’ range the company has ever put on display, from the 2.8-litre, 4-cylinder QSF2.8 – suitable for compact underground loaders – up to the 95-litre, 16-cylinder QSK95, designed for ultra-high-class haul trucks and excavators, both of which will be making their North American debut.
According to Cummins, the 16-cylinder QSK95 reaches mining power output previously available only from 20-cylinder engines. High power density is achieved with a hardened power cylinder featuring the strongest single-piece forged-steel piston available in the industry, while deep structural strength is provided by an all-new ductile iron-skirted block.
This increased strength, say Cummins, will contribute to higher engine uptime availability, extended life to overhaul and more cost-effective rebuilds.
The QSK95 will be available as a global mining engine platform capable meeting all emissions standards, including Tier 4 Final in North America, using Cummins’ proven Selective Catalytic Reduction (SCR) after-treatment.
Cummins Tier 4 Final technology will be a key focus on the Cummins stand at MINExpo 2012. On display for the first time for the mining market will be the Cummins SCR clean-exhaust system for diesel engines over 751hp (560kW).
The QSK engine family will meet EPA Tier 4 Final off-highway 2015 emissions standards with a combination of clean in-cylinder combustion and a new SCR clean-exhaust system. The SCR system is modular in design and scalable for the complete QSK engine line-up.
For applications below 1,500hp (1,119kW), a single-assembly SCR system will be used in varying lengths sized to engine output. A twin-assembly SCR system will be used for applications above 1,500 hp, each aligned with a cylinder bank and matched to engine power output.
Meanwhile, the QSF2.8 – the smallest engine to be introduced by Cummins for the off-highway industry – with full-authority electronic controls driving a high-pressure common rail (HPCR) fuel system, brings the premium performance characteristics associated with larger Cummins engines to compact equipment below 75hp (56kW) for the first time.
Although the architecture of the QSF2.8 has many aspects in common with that of a higher-displacement engine, it weighs just 230kg and has an installation envelope comparable in size to engines smaller than 2.8-litre displacement.Manufacturer to show extensive ‘smallest-to-largest’ off-highway engine display in Las Vegas.
