©ROMAN SIGAEV – STOCK.ADOBE.COM
ENGINE SYSTEM A concept for Libertine’s end product which brings together the electric components as well as control hardware and software into a platform engine developers can use to command compression ratios cycle by cycle.
oemoffhighway.com/21342647
ENGINE TECHNOLOGY to Meet Emissions Regulations and Beyond
LIBERTINE FPE
Advancements in engine systems will continue to focus on improving efficiency and reducing emissions. by Sara Jensen
L IB E
R T IN
Replacing crankshafts with software control allows every combustion event to run optimally using realtime compression ratio control.
E E FP
A
lthough there is a lot of focus these days on alternative power systems such as batteries and fuel cells, internal combustion engines will continue to play an important role in heavy-duty applications. As such, it will be necessary for manufacturers to keep evolving their designs to optimize performance and reduce emissions. “Almost every region of the world has air pollution regulations in place or is developing them,” says Gregory Pelton, Senior Manager – Sales and Application Engineering Construction, Industrial and Agriculture at MTU America Inc. “These ever more
24
stringent emissions regulations require the deployment of new or optimized technology.” MTU, like most engine manufacturers, has developed a platform of dual certified engines which meet EU Stage V and U.S. Tier 4 Final emissions regulations while also offering a solution for lesser regulated areas. Stage V is the most stringent regulation to date for the off-highway equipment industry; developing engines which meet it as well as other regional regulations eases installation and design costs for OEM customers by giving them the flexibility of using the same engine for various emissions regulations. Developing these dual certified
OEM Off-Highway | APRIL/MAY 2021
engines required optimization of the entire engine package, says Pelton. Continued optimization of the engine and aftertreatment system enabled reductions in fuel consumption as well as longer service intervals, providing customers with further benefits. These types of optimization efforts will also be necessary when new regulations are introduced to the industry, he says. Nick Block, Director, Worldwide Marketing & Sales, John Deere Power Systems (JDPS), says leveraging the company’s experience to refine the technologies it has developed over the years aids engine optimization. Areas he says JDPS is focusing its efforts include improvements in package
