Allen Schaeffer

Allen Schaeffer is an OEM Off-Highway Editorial Advisory Board member and Executive Director of Diesel Technology Forum.

From the Author
Trends
Diesel Will Remain, Without Hesitation
Diesel Technology Forum
A diversity of demands for reliable and durable power will keep diesel relevant.
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Equipment Market Outlook
A Pivot from Clean Air to Efficiency
Diesel Technology Forum
The Diesel Technology Forum (DTF) has studied and analyzed the perception and impacts of the VW situation on the diesel industry at large.
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Engines
A race to the starting line
Diesel Technology Forum
Part one of the emissions reduction strategy may be completed with system implementation underway, but the reduction expectations of the government are far from over.
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Engines
Cleaner than clean
Diesel Technology Forum
As air monitoring technology becomes more portable and accessible, and clean air requirements continue to get stricter, the industry of clean air continues to be top of mind to equipment manufacturers and contractors alike.
The EPA's current Ozone Regulations: Green indicates the county meets standards, red does not meet standards, and gray areas are not currently monitored.
Engines
Clean Diesel 2.0
Diesel Technology Forum
A brief look into the world of diesel power in both on- and off-highway vehicle applications, emissions reduction tactics and the future of clean diesel technology solutions.
The John Deere 644K Hybrid wheel loader uses a diesel engine running at steady state to turn an electric generator.
Engines
Clean Diesel Emissions and Equipment Update: Tier 4 Standards, Update and Future Considerations
Diesel Technology Forum
The advances in engine combustion, fuel injection, turbocharging and engine control systems and new emissions control options using reformulated and low-sulfur diesel fuels were the right formula.
U.S. EPA's off-road diesel emissions limits are phased in using the eight horsepower groups shown across the top line of this table. Under-75-hp engines had to meet Tier 4 final limits as of the first of 2013, and all engines must comply with Tier 4 final by 2015.
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