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This John Deere D-Series Tier 2 motor grader has been retrofitted with a device that reduces NOx emissions by 40 percent and includes a level 3 diesel particulate filter. The device reduced the Tier 2-certified engine emissions to verified Tier 3 NOx levels and Interim Tier 4 PM levels. local legislation. If you’re in California, a non-attainment area or just want to go green, there are some options other than buying a new fleet. One option is retrofitting engines with a DPF that filters the exhaust gas to reduce PM. As the PM collects in the filter, the exhaust restriction will increase to a point where the filter must find a way to regenerate or burn off this PM. “Older Tier 0 and some Tier 1 engines output so much PM that, in some applications, DPFs are not a practical solution,” says Chruschiel. “Also, applications that are lightly loaded may also be bad applications for DPFs. It is very important for the after-treatment installer to review each application for not only operational considerations but also other important criteria such as line-of-sight and structural integrity. Some applications simply do not have the physical space to accommodate new technology. For example, some DPFs can be up to three times larger than the muffler they replace. “The fleet decision-maker must evaluate the capital cost of the emissions-reduction action versus the residual value and remaining life of the machine. Repowering or retrofitting may not always be the best emissions-reduction option. Sometimes machine replacement with the latest certified engine may make the most economic sense in the long run,” Chruschiel adds. 16 Utility Contractor | May 2009 Expanding the realm of retrofit options, Schroer points out that the EPA has said that on-highway solutions may be applied to off-highway applications. With a myriad of options, it makes off-highway retrofitting more complicated. “The cost of these retrofit products can vary based on the product, but these products range from $2,000 and up,” says Schroer. “[Cummins] strategy is to use its Tier 4 development experience to bring products to the off-highway market that will satisfy the BACT requirement and will encompass various after-treatment technologies.” Fueling the Green Flame What about alternative fuel I’ll tell you about alternative fuel. You’ve heard the biodiesel buzz words, but whether the renewable, oxygenated fuel, made from a variety of agricultural resources like soybeans, actually burns cleaner is still unclear. One thing is certain: While it may reduce PM and carbon monoxide, using a renewable, non-fossil fuel can reduce the carbon footprint of equipment. “It is likely that modern, high quality biofuel will play a role in future fuel supply, so Perkins is designing its engines to be compatible with B20 biofuel. That is 20 percent biofuel mix,” says Lythgoe. You may have also heard of ultralow sulfur fuel. As Laudick explains — prior to July 2007, sulfur content levels of typical off-highway diesel fuel were 1,000 to 3,000 parts per million (ppm). Sulfur content in off-highway fuel was reduced to 500 ppm (low sulfur diesel) in 2007 and will be further reduced to 15 ppm (ultra-low sulfur diesel) in 2010. “These new, cleaner fuels will enable the use of exhaust filters on new engines and reduce emissions from the existing diesel engines,” he says. It’s always a good idea to look toward the future, but you can’t lose sight of the present, especially now. Those engine Tiers that we started hearing about nearly 10 years ago (and thought were so far away) are here today. Putting them at work on the jobsite is going to keep the Earth green and you working. Even if you aren’t in an area or working a job with environmental regulations, knowing what you’re running in your fleet is still a good idea. If the black suits ever come a-knockin’ at your door, you’ll be ready for them. Jason Morgan is Associate Editor of Utility Contractor.
Catch the Growing Wave of Pipeline Construction in North America North American Pipelines – the premier publication covering the business of pipeline construction in North America. We are seeing unprecedented growth in pipeline development from the Rockies to the Northeast Corridor, from the Gulf Coast to the oil sands of Alberta, and all places in between. In fact, more than 20,000 miles of new natural gas transmission pipeline capable of carrying about 100 billion cubic feet per day were installed in the last decade in the United States alone, with many more miles of pipeline being planned. With an increased push for energy independence and clean-burning fuels, the long-term outlook for the North American pipeline market remains strong. We look forward to being there with you as we navigate these exciting times. Visit North American Pipelines online at www.napipelines.com for the latest news in the oil and gas pipeline industry and subscribe to our free bi-monthly magazine and bi-weekly e-newsletter. To get in on the exciting advertising options North American Pipelines offers to help your bottom line, contact Ryan Sneltzer, Regional Sales Manager, at (330) 467-7588 or rsneltzer@benjaminmedia.com
Page 4: MAY 2009 CONTENTS 12 Get Engine Sma
Page 8: GROUNDBREAKING NEWS Bobcat Lends a
Page 11 and 12: GROUNDBREAKING NEWS Cracking the Sa
Page 13 and 14: standards in 2011, with 75 to 174 h
Page 18 and 19: Wheel Loader Riddler Answering the
Page 20 and 21: Wheel loaders have traditionally be
Page 22 and 23: operate and provide excellent stabi
Page 25 and 26: Picture by Kaj Bjurman, Stockholm,
Page 27 and 28: 2009-2010 DIRECTORY The Voice of th
Page 31 and 32: 2009-2010 DIRECTORY A WORD ABOUT TH
Page 34 and 35: NUCA COMMITTEES 2009 Leadership Rol
Page 36 and 37: 2009-2010 CONTRACTORS As of April 3
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2009-2010 CONTRACTORS As of April 3
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2009-2010 ASSOCIATES As of April 3,
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2009-2010 PRODUCT INDEX As of April
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INSIDE WASHINGTON NUCA’s Legislat
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SAFETY MANAGEMENT What You Need to
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NUCA NEWS Tina Dillon Chairs Steeri
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INDUSTRY CALENDAR June 2009 11-14 -
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ADVERTISERS’ INDEX Al Asher & Son
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