Sauer-Danfoss Website Assists OEMs with Pending Tier 4 Regulations

Sauer-Danfoss Inc., Ames, Iowa, has introduced a dedicated emissions solutions section of its website as a resource for OEMs to address the challenges that come with Tier 4/Stage IV compliance. The new emissions solutions section features research articles, tools, white papers, and industry publication features, all resulting from Sauer-Danfoss research. It also serves as a repository to links that are relevant to global emissions regulations and engine technology information.

“For off-road vehicle manufacturers, it’s no secret that lower emission requirements for new engines will have a significant impact on future generations of machines,” said Rick Sporrer, Sauer-Danfoss’s sales quality and technical services director. “By our estimates, over 10,000 different machines will need to be redesigned. This is much more than an engine issue—machine design is taking a quantum leap in complexity right now.”

The Sauer-Danfoss Global Emissions Team, which was introduced in 2008, has been working on both technologies and performance variables related to power losses, heat rejection, and space constraints associated with the new regulations. The goal is to assist OEMs in designing machines for greater productivity, using less energy.

In order to meet the required emission regulations, a number of engine characteristics will be affected. For example, engine application operating speeds and speed bands will be reduced. Engine power levels and torque will change. Along with all this, there will be greater system heat rejection. What does this mean for vehicle performance? According to the Sauer-Danfoss team, several things, including available hydraulic flow will be reduced; net vehicle power output will be reduced; heat rejected to the environment will increase; and available installation space around the engine will be reduced.

“All this will change components and the way power is distributed in the machine,” Sporrer said. “How we determine the most viable solutions is dependent on any of number of technologies which may be employed.”

Sauer-Danfoss is performing lab tests, conducting dynamic simulations, evaluating proof of concepts, validating, and documenting how best to recover horsepower losses so customers produce more efficient, productive machines. Focused on providing solutions for propel, work, control, and vehicle management functions, Sauer-Danfoss is positioned to integrate products to meet the significant challenges posed by the arrival of Tier 4/Stage IV.

“The best solutions help customer identify the most efficient way to design more productivity into their machines while consuming less energy to get the work done,” Sporrer said. “The best approach is to match the right solutions with the right applications.”


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