Cummins to Reveal "4 More for Tier 4" at Bauma Show

Cummins Engines

Four New Engines To Make Debut.

Cummins Inc. (NYSE: CMI) will reveal four new engines for EPA Tier 4 Interim and EU Stage IIIB emissions regulations at the BAUMA 2010 show in Munich, Germany from April 19-25.

The “4 More For Tier 4” reveal will mark the debut of Cummins next generation of 4-cylinder QSB3.3 and QSB4.5 engines for compact equipment, together with a first showing of the all-new QSX11.9 and QSX15 Heavy-Duty engines.

New Tier 4 Engines

The four new Tier 4 Interim engines will be displayed at BAUMA as complete air-intake to exhaust aftertreatment systems, with all key technologies integrated by Cummins. The compact 3.3-liter and 4.5-liter QSB engines extend across the 75-hp to 160-hp (56 kW to 119 kW) power range, enabling OEMs to standardize their 4-cylinder installations with common Tier 4 Interim engine architecture.

The all-new 11.9-liter and 15-liter QSX engines cover a broad, 300-hp to 600-hp (224 kW to 447 kW) power band. The heavy-duty duo shares the same performance-enhancing technology for Tier 4 Interim, such as Cummins new XPI common-rail fuel system.

Cummins: Bauma Show

QSX11“BAUMA is one of the world’s biggest equipment shows and offers an ideal opportunity for Cummins to present our four latest Tier 4 Interim engines to the industry,” said Hugh Foden, Executive Director, Cummins Off-Highway Business.

“The 4-cylinder QSB engines and the Heavy-Duty QSX engines bring a new power capability to the equipment industry for Tier 4 that go beyond achieving very low emissions. They will realize up to 5 percent higher fuel efficiency and improve productivity with faster engine response.

“Additionally, our single-system approach, from air-intake to exhaust aftertreatment, enables easier machine integration for OEMs,” added Foden.

The four new engines will join the previously shown QSB6.7 and QSL9 MidRange family at the Cummins booth at BAUMA to complete a wide 75-hp to 600-hp (56 kW to 447 kW) power lineup for Tier 4 Interim. The low-emissions standards take effect in North America and the EU in January 2011 for engines above 173 hp (129 kW) and January 2012 for engines above 74 hp (55 kW).

Compact 4-Cylinder Technology

The QSB3.3 and QSB4.5 meet the need for 4-cylinder installation flexibility and simplified Tier 4 Interim technology across the 75-hp to 160-hp (56-kW to 119-kW) power band. The engines feature a scaled down cooled Exhaust Gas Recirculation (EGR) system and Cummins particulate exhaust aftertreatment ideally sized for compact equipment. Cummins new Direct FlowTMair cleaner reduces space claim by up to 35 percent compared with typical Tier 3 filters with equivalent or longer service intervals.

A key design focus for Cummins 4-cylinder engines has been to avoid over-engineering with complications such as dual turbocharging. Instead, the QSB3.3 and QSB4.5 utilize a much simpler variable-flow turbocharger across the complete power range.

New Heavy-Duty Capability

The all-new QSX11.9 and QSX15 share the same performance-enhancing technology all the way from 300-hp to 600-hp (224 to 447 kW) for very demanding duty cycles. Cummins new XPI fuel system, incorporated into the Tier 4 Interim QSX11.9 and QSX15, provides the most capable common-rail technology ever seen on a heavy-duty platform – able to inject a precise quantity of fuel at extra-high pressure up to 35,000 psi (2400 bar). Both power and torque delivery are significantly faster to boost machine productivity beyond that of Tier 3 engines.

The XPI system is complemented by a single Cummins VGTTM Variable Geometry Turbocharger that is able to continuously vary airflow boost to match engine rpm and load demands. Cummins new Direct FlowTMair cleaner includes an integrated sensor for monitoring temperature and pressure to ensure optimum airflow.

The QSX11.9 and QSX15 utilize proven Cummins emissions technology with cooled EGR to reduce Oxides of Nitrogen (NOx) emissions by 45 percent and a Cummins Particulate Filter to remove over 90% of Particulate Matter (PM) emissions.

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