Cummins Engine Achives Near-Zero Emissions

Cummins Inc. revealed the latest generation of the QSL9 engine, capable of meeting near-zero emissions levels, at CONEXPO-CON/AGG 2011. This 9-liter engine achieves 2014 EPA Tier 4 Final and EU Stage IV standards with an ultra-clean aftertreatment system, combining the Cummins Compact Catalyst with Selective Catalytic Reduction (CCC-SCR). 

With up to 400-hp (298 kW) output, the QSL9 makes no performance compromises in order to meet near-zero emissions, retaining the higher output and faster engine response demonstrated by the Tier 4 Interim QSL9. Fuel efficiency at Tier 4 Final will be further improved over that achieved for the Tier 4 Interim engine.

The CCC-SCR ultra-clean aftertreatment system is specifically configured to provide a more compact and flexible equipment installation for Tier 4 Final. The Cummins Compact Catalyst, previously used for ratings below 174 hp (130 kW), is scaled-up in size for the 9-liter platform. Combined with SCR, the aftertreatment system achieves near-zero emissions with fully passive, flow-through operation.

In addition to the QSL9, the CCC-SCR system will be utilized by the QSB6.7, QSB4.5 and QSB3.3 engines to offer a common aftertreatment solution from 75 hp to 400 hp (56 kW to 298 kW). The scalability of the CCC-SCR system enables sizing to be configured for specific power outputs across the 3.3-liter to 9-liter engine range.

“We listened to equipment manufacturers before developing our Tier 4 Final architecture for the QSB3.3 to QSL9 product line, and the clear message we heard was to focus on reducing installation complexity as much as possible – while also retaining the high power output and performance offered by our Tier 4 Interim products,” said Jeff Weikert, Vice President – Cummins MidRange Engineering.

“I am very pleased to say that with the CCC-SCR ultra-clean aftertreatment system, we are able to meet and exceed our customer expectations for Tier 4 Final. With the addition of SCR, we now have the ability to precisely balance NOx reduction between aftertreatment and cooled Exhaust Gas Recirculation on the engine – giving us more control over the combustion formula than ever before.

“This means we are able to retain the impressive power output and transient response of the Tier 4 Interim products, with fuel consumption reduced even further. Importantly, we have been able to reduce engine-out PM to a level low enough to extend the use of the Cummins Compact Catalyst right across our QSB6.7 and QSL9 ratings to provide a fully passive aftertreatment solution,” explained Weikert.

As the CCC is significantly smaller than a Particulate Filter, it offers a substantial benefit for increasingly space-constrained installations. At Tier 4 Interim, this space-saving advantage has been especially important for four-cylinder applications – but looking ahead to Tier 4 Final, the need to minimize space claim moves beyond this to the 6.7-liter and 9-liter six-cylinder platforms up to 400 hp (298 kW).

At Tier 4 Interim 2011 emissions levels, the QSB6.7 and QSL9 engines are capable of achieving up to 5 percent improved fuel efficiency compared to Tier 3, depending on duty cycle and machine optimization. Fuel efficiency will be further increased for Tier 4 Final 2014 by an additional 2 percent to 3 percent.

CCC-SCR Ultra-Clean Aftertreatment
To meet Tier 4 Final in 2014, particulate matter (PM) reduces to 0.02 g/kW-hr and oxides of nitrogen (NOx) reduce to 0.40 g/kW-hr. Compared to Tier 3 emissions levels, this represents a 90 percent reduction for both PM and NOx.

The SCR system developed by Cummins for Tier 4 Final is a next-generation design that moves beyond the SCR technology currently in use for Tier 4 Interim. The system incorporates a copper zeolite-based catalyst capable of up to 95 percent NOx conversion and able to operate more efficiently at lower temperatures. The system features advanced sensors to provide full closed-loop control. Diesel Exhaust Fluid (DEF) dosing levels are minimized with enhanced mixing in the decomposition pipe.

The CCC is positioned in front of the SCR in the exhaust stream, and provides easier and more flexible installation options. Efficient PM reduction is achieved with a catalytic coating, substrate and sizing that are uniquely tailored for the Cummins engine platform.

By passively oxidizing PM from the exhaust stream, the CCC is a maintenance-free “fit and forget” device offering an inherent operational simplicity ideally suited for rental equipment applications.

The CCC-SCR aftertreatment will be available in multiple configurations, including switchback, horizontal and vertical. Optimization work will continue to refine aftertreatment packaging and evaluate innovative solutions to further enhance installation flexibility.
Cummins experience with SCR technology is unrivaled in the industry, dating to 2005. Today, around 75,000 EPA 2010 on-highway engines with SCR are operating in North America, meeting near-zero emissions standards similar to those of Tier 4 Final. This enables Cummins to deliver the right emissions solution by leveraging preceding on-highway technology and then optimizing for off-highway customers.

Pre-Designed For Final
The QSL9 engine revealed at CONEXPO-CON/AGG for Tier 4 Final 2014 is almost identical to the engine introduced to meet Tier 4 Interim 2011. This ability to move forward to meet the near-zero emissions standards is pre-designed into the existing engine platform, with no significant change required for engine systems or installation profile.

With performance-enhancing systems such as Cummins Variable Geometry Turbocharger (VGT™) and Xtra-High Pressure Injection (XPI) fuel system, the QSL9 continues to equal the power productivity of higher-displacement engines.

Cummins Direct Flow air cleaner technology brings a further installation advantage with a smaller profile than typical cylindrical cleaners, together with the benefit of extended service change intervals.

Cummins Inc.
 

Company Info

Latest News

Tags
Portable Power & Compressors

Chicago Pneumatic 850 CFM Compressor Works Range of Applications With Variable Flow and Pressure Control

Chicago Pneumatic Construction Equipment has released the CPS 850 portable diesel compressor to the North American marketplace. The compressor can work a range of applications with variable flow and pressure control, making it an incredibly versatile solution on the jobsite. The 850 CFM compressor also features easy operation, simplified maintenance, and a maximum amount of uptime.

Equipped with a 25-hp, 6-cylinder John Deere T4F engine, the CPS 850 compressor weighs 7,980 pounds and measures 203-inches long, 80-inches wide, and 86-inches tall. With an easily adjustable working pressure between 58 and 150 psi, the compressor offers a maximum unloading pressure of 175 psi, and features an 88-gallon fuel tank that consumes fuel at 10.7 gallons per hour.

Read More

Alliance Tire Launches Galaxy Multi-Purpose Construction Tire

The Alliance Tire Group has introduced a new, economical multi-purpose construction (MPC) tire. With reinforced sidewalls and a wide, flat tread for lateral stability, the versatile Galaxy MPC G-2/L-2 tire is optimized for graders, loaders and telehandlers, says Steve Vandegrift, Product Manager for Alliance Tire Americas.

The Galaxy MPC also features an optimum lug-to-void ratio for better traction and heat dissipation; centre lug blocks for a smooth ride; and deep, open shoulders for lateral stability and better self-cleaning. The tire design and compound also ensure better cut resistance and more efficient heat dissipation for longer tire life.

Read More

Komatsu Parallel Link Undercarriage System for the D155AX-8 Crawler Dozer is Ideal for Rocky and Sandy Conditions

Komatsu America Corp. has added the highly successful PLUS (Parallel Link Undercarriage System) rotating bushing undercarriage option to the D155AX-8 dozer.

“Applications for PLUS undercarriage range from high-impact, rocky ground conditions to low-impact, abrasive sandy worksites,” said Chuck Murawski, product manager, Komatsu America. “This has enabled PLUS to become standard equipment on other Komatsu dozer models,” Murawski said.

Read More

Tags
Portable Power & Compressors

VMAC to Make RAPTAIR-MF Fully Customizable

VMAC's RAPTAIR-MF diesel engine–driven multifunction system has become fully customizable and adaptable to fit various business needs of mobile service technicians. The company made a significant step towards product customization in the mobile power industry, allowing their customers to build personalized power systems.

"Our customers only want to pay for the components they use so we wanted to give them the option to build a multifunction system that fits their needs." said Dan Hutchinson, Vice President of Sales and Marketing at VMAC Global Technology Inc.

Read More

Join our mailing list

Latest headlines
delivered to you weekly

Heavy Equipment Guide
Tags
Industry News

Detroit Connect to Transition Branding of Visibility Fleet Software and On-Board Tablet to Zonar

Detroit Connect has announced that it is deepening its telematics strategy by re-aligning its offerings in collaboration with Zonar Systems, Inc.

Detroit Connect will transition the branding of its Visibility Fleet Software and On-Board Tablet to Zonar. With this change, Visibility will take on Zonar’s Ground Traffic Control fleet tracking application product name, and the Tablet will assume the 2020 tablet branding. Current Visibility and Tablet customers will experience no changes in product capabilities or pricing.

Read More

Tags
Industry News

International Truck to Introduce New Line of Premium Vocational Trucks as Navistar, Caterpillar Conclude Agreement

Navistar, Inc. has announced that it will launch a new line of premium vocational trucks for the severe service segment beginning in early 2016, leveraging shared technology and intellectual property from its venture with Caterpillar. In addition, the company will transition to Caterpillar the production and engineering of the Cat-branded severe service trucks. The company has been supplying to Caterpillar since 2011. Navistar will continue to manufacture trucks for Caterpillar through December 31, 2016.

While specific terms of the transition will not be disclosed, both companies will have the opportunity to leverage certain joint intellectual property, collaborate with suppliers and utilize licensing agreements moving forward.

Read More

Tags
Equipment Management & Maintenance

JCB Rolls Out Master Technician Program to North American Dealerships

JCB has recently introduced the ‘Master Technician’ program to all dealerships in the North American network. The Master Technician program is designed to continue to build the skills of JCB Service Technicians and recognize technicians that are at the top of their class.

To be considered for the program, service personnel must be nominated by their dealership and pass an entry exam. Once those qualifications have been met, participants must pass a series of training programs and hands-on skill challenges at 100%, as well as all distance learning classes, JCB systems efficiency testing, Core Product Component Testing and other service-based tests to earn the designation of Master Technician.

Read More

Tags
Excavators

Volvo EC160E Boosts Fuel Efficiency and Power

The EC160E is the newest E-Series crawler excavator from Volvo Construction Equipment, and incorporates a powerful Tier 4 Final engine into a durable design, providing excellent fuel efficiency and a robust performance in tough applications.

The new EC160E crawler excavator from Volvo Construction Equipment is designed with a range of new features that boost fuel efficiency without sacrificing power. Incorporating a Volvo Tier 4 Final D4 engine, the EC160E boasts an 8 percent improvement in fuel efficiency, and 5 percent improvements in tractive force and engine power compared to previous-generation models.

Read More

Tags
Trucks & Trailers

Caterpillar to Manufacture and Design Vocational Truck Products in Victoria, Texas

Cat CT680 Vocational Truck
Cat CT680 Vocational Truck

Caterpillar Inc. will begin independently designing and manufacturing its vocational truck product family at its plant in Victoria, Texas. The plant, which opened in 2012, currently produces hydraulic excavators.

“The on-highway vocational truck product family is important to our product line; customers like our trucks and want to include them in their fleets in a variety of heavy-duty applications such as dump trucks, mixers, haulers or one of the other configurations we offer,” said Chris Chadwick, Caterpillar’s director of the Global On-Highway Truck Group. “To continue to provide the best solution for our customers, we will bring the design and manufacturing of this product into Caterpillar, and the production specifically to Victoria. Our updated strategy reaffirms our commitment to grow and develop our presence in the vocational truck industry moving forward.”

Read More

Tags
Aggregates Equipment

Haver & Boecker Becomes Exclusive Source of Flex-Mat in Western Canada

Flex-Mat 3, which is now available through Haver & Boecker Rocky Mountains, provides both modular and tensioned screen options. It reduces downtime and increases production by as much as 40 percent.
Flex-Mat 3, which is now available through Haver & Boecker Rocky Mountains, provides both modular and tensioned screen options. It reduces downtime and increases production by as much as 40 percent.

Haver & Boecker Canada now serves as the exclusive source for Flex-Mat 3 High-Performance Screen Media in Alberta and British Columbia. For nearly 20 years, producers and contractors have relied on Flex-Mat 3 self-cleaning screens for mining, aggregate, sand and gravel, coal, industrial minerals, asphalt and other applications.

“Flex-Mat is a well-known and respected name in the screening industry,” said Karen Thompson, president of Haver & Boecker Canada. “Adding this product to our portfolio will not only present new customer opportunities, but it will provide additional high-performance, self-cleaning screening solutions to our existing customers.”

Read More