Analyses comparing emissions between Liebherr cranes and heavy duty commercial trucks reportedly found that cranes emitted CO2 at levels comparable to commercial trucks, and actually emitted less in the category of hydrocarbons.
As Cranes Today reports, mobile cranes are held to off-road emissions standards, whether they are being operated on the road or on a construction site. This means that, beginning in 2019, new diesel engines installed in mobile cranes licensed in certain EU countries have to meet the Euro V emissions standards.
Dr. Ulrich Hamme, technical director at Liebherr-Werk Ehingen, said the company has spent considerable money finding ways to reduce emissions, with promising results.
“We have been conducting research for over 20 years and a significant part of our development budget is spent on reducing emissions,” Dr. Hamme said. “During this time, we have managed to reduce nitrogen oxide and soot particles, in other words fine dust, in stages by around 97 percent. Before our fleet was converted to emissions level V, we conducted a field test with crane hire company ESB based in Biberach over a period of many months to observe and improve the diesel particulate filter and urea dosage system in real-world conditions.”
“The results of these measurements, even by comparison with modern trucks from renowned German manufacturers, are another pioneering, forward-looking milestone in our steady development of engines and gearboxes for our cranes.”
In one study, researchers from TÜV NORD measured emissions from a laden 40t Mercedes Actros 1842 truck against emissions from the 60t Liebherr LTM 1160-5.2 crane. They concluded that crane emissions were well within the parameters set by EU regulations.
“Both the nitrogen dioxide emitted by the crane and the carbon monoxide are in the comparable range to the emissions of the truck while the hydrocarbons were even lower than those measured in the truck,” said TÜV NORD project manager Dr. Martin Goschütz.
Dr. Hamme was encouraged by these results.
“The PEMS test shows the fact that our mobile cranes can definitely stand up against the emissions from long distance trucks, that’s extremely pleasing,” he said. “It shows us that we are doing the right thing by ensuring that we use the very latest engine and gearbox technology despite the short distances travelled per year. Combined with a sophisticated, efficient emissions treatment system, our mobile cranes have now achieved this tested status which means that we are setting pioneering standards in terms of cleanliness and environmental.”