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

Level Pro System Simplifies Milling of Streets

A large cold mill typically is the grinder of choice for big dual-lane highway projects but an asphalt contractor in Ontario is finding that it’s perfect for milling suburban residential streets as well.

“We’re very much a hands-on company,” said Vic Araujo, project supervisor and operator, Lisbon Paving Co., Ltd., Bradford. “We’ve had our W 250 almost a year and we use it for both small and large jobs.”

Read More

Tags
Industry News

Another Year Older But No Wiser – Sixth Anniversary of Keystone XL Delay

Brian McGuire, president & CEO of Associated Equipment Distributors (AED), issued the following statement highlighting the sixth anniversary of TransCanada’s first application (Sept. 19, 2008) to the U.S. State Department for approval to build the Keystone XL pipeline.

“It’s becoming an unfortunate, yearly tradition for the construction equipment industry to mark the passing of this date. We’ve been stuck in idle for six long years while the Obama administration has found one reason after another to avoid approving a project that should be a no-brainer.

Read More

Sponsored Content

Precision Scale

This short 90 second video showcases the new direction and vision of Precision Scale. Focusing on a new truck scale manufacturing facility and revamped service department, this video will give you a quick glimpse of the exciting things that are happening at Precision Scale.

Read More

Tags
Industry News

Cummins Recognized with the 2014 Robert W. Campbell Award by the National Safety Council

Cummins Inc. has received the 2014 Robert W. Campbell Award from the National Safety Council. Campbell Award nominees are evaluated on the organization’s Environmental, Health & Safety (EHS) management system and its incorporation into business practices. According to the Campbell Award executive review committee, Cummins scored highly because its leaders commit to safety through the company’s “Live It, Lead It” program. Cummins actively engages its employees in meaningful and impactful projects in the places they live and work.”

“Our work in safety is about caring for our people who work every day to help our Company succeed,” said Tom Linebarger, chairman and CEO of Cummins. “The Campbell Award is terrific recognition for the Cummins employees who have made tremendous progress in the area of safety at our company. However, we know that when it comes to safety, our work is never done. There is much more to do and we will continue to be guided by our Company's mission to demand that everything we do leads to a cleaner, healthier and safer environment."

Read More

Tags
Industry News

BuildForce Canada Celebrates National Tradesmen Day Across the Generations

In recognition of the changing face of Canada's construction industry, BuildForce Canada is acknowledging the contributions of tradespeople across the generations, on National Tradesmen Day. Over the next decade, Canada's construction workforce will change dramatically, with up to one-quarter of its skilled baby boomers retiring."Today is a great opportunity to show our appreciation for those who've made construction their life's work, and to welcome a new generation," said Rosemary Sparks, Executive Director of BuildForce Canada.

John Tomes, a 68-year-old Superintendent of Manpower with McCain Electric Ltd. in Winnipeg, was 17 when he began his career as an electrician.

Read More

Join our mailing list

Latest headlines
delivered to you weekly

Heavy Equipment Guide
Tags
Trucks & Trailers

Edmonton Kenworth Moves Fort McMurray Dealership and Doubles Remote Service Capacity

Edmonton Kenworth - Fort McMurray dealership.
Edmonton Kenworth - Fort McMurray dealership.

Edmonton Kenworth recently moved its Fort McMurray dealership to a 13,000 square-foot facility with a larger parts department and a four-service bay service department.

Edmonton Kenworth also doubled the capacity of its Fort McMurray remote service fleet by adding two Kenworth T370 mobile service trucks. Edmonton Kenworth-Fort McMurray now has four remote service trucks.

Read More

Tags
Trucks & Trailers

Komatsu America Corp. Introduces the HM300-5 Articulated Dump Truck

Komatsu America Corp. has introduced its HM300-5 articulated dump truck. The HM300 Tier 4 Final was exhibited earlier this year at CONEXPO-CON/AGG 2014.

Featuring a net 324HP (242 kW), the HM300-5 is powered by a Komatsu SAA6D125E-7 engine that is EPA Tier 4 Final emissions certified. Komatsu’s Tier 4 Final engines are built on the solid foundation inaugurated in 1996 with the introduction of Komatsu’s Tier 1 engines. This new articulated dump truck leverages Komatsu’s leadership in technology and innovation by delivering a more environmentally friendly engine that provides high levels of performance while reducing fuel consumption and operating costs.

Read More

Tags
Industry News

Detroit Virtual Technician Achieves 100,000th Installation

Daimler Trucks North America (DTNA) has marked the 100,000th installation of its proprietary Detroit Virtual Technician remote diagnostic system. Since its launch in 2011, Detroit’s Customer Support Center has personally assisted more than 13,000 customers with actionable and detailed service recommendations.

Virtual Technician reduces downtime and decreases maintenance costs by providing a technical snapshot of the powertrain’s status as soon as the Check Engine light comes on. Specially trained technicians at the Detroit Customer Support Center (CSC) immediately evaluate the fault codes to determine the exact issue, provide service recommendations and identify the parts needed for the repairs. To expedite service, CSC technicians can then identify and alert the closest authorized Detroit, Freightliner or Western Star service location in advance of the customer’s arrival.

Read More

Tags
Industry News

Jack Doheny Companies Form Specialty Equipment Division

Jack Doheny Companies, environmental equipment dealer organizations, selling, renting and servicing a broad portfolio of vacuum trucks and infrastructure inspection equipment. With 17 locations in the US and Canada, and further expansion plans identified, Jack Doheny Companies is well positioned to provide a unique value proposition to their clients.

Although current business is strong and growing rapidly, JDC continually seeks synergistic opportunities, and the rental or sale of Bronto Skylifts provides such an opportunity. JDC was an early establisher of a heavy equipment rent to purchase program that also provides significant value to this particular market.

Read More

Tags
Portable Power

Light and Power In One Tower

L20 Light Tower
L20 Light Tower

Doosan Portable Power offers a combination light tower and mobile generator with the Doosan L20. This model anchors the Doosan Portable Power lighting systems portfolio and provides a single solution for two important jobsite needs, power and light.

The L20 is ideal for mining, oil and gas exploration and a multitude of other environments where there is no reliable power source present. Traditional light towers only provide enough power for the light source. However, the L20’s 32-horsepower Mitsubishi diesel engine and 20-kilowatt generator make it the most flexible and powerful light tower in the Doosan line, with enough power to light a wide area while simultaneously providing up to 16 kilowatts of energy to power jobsite trailers, power tools, heaters and more.

Read More

Tags
Lifting Equipment

Genie Opens Doors to New Oklahoma City Training Center

Terex Aerial Work Platforms (AWP) is pleased to announce that the new Genie Oklahoma City Training Center is open and operational. The new 18,000 sq ft facility is centrally located for ease of travel from either U.S. coast. Genie will also continue to offer training at its Redmond, Wash. campus.

“It comes down to this: Properly trained technicians means greater uptime for your equipment resulting in greater ROIC,” said Bob Bartley, Director of Product Support, Terex AWP. “Training your team is an investment which repays in the long run, especially in the rental industry.”

Read More