article thumbnail

DTF: Diesel dominates commercial truck, transit and school bus fleets in US

Green Car Congress

Diesel is the predominant technology in commercial trucking, school, and transit bus sectors, according to the Diesel Technology Forum’s analysis of data sourced from S&P Global Mobility TIPNet data of vehicles in operation for Class 3-8 as of December 2021. Of the largest trucks (Class 8) in operation, 97% are diesels.

Diesel 468
article thumbnail

Diesel Technology Forum: 57% of all commercial diesel trucks on the roads in US are near-zero emissions models

Green Car Congress

Analysis of a study by S&P Global Mobility shows the number of new near-zero emission diesel trucks on the road in the US increased 10.2% between 2021 and 2022, according to the Diesel Technology Forum (DTF). Near-zero emission trucks are advanced diesel technology manufactured in the 2010 and later model years. are CNG, 0.3%

Diesel 284
article thumbnail

University of Wisconsin Researchers Investigating Dual-Fuel (Gasoline and Diesel) Partially Premixed Combustion for High-Efficiency, Ultra-Low Emission Combustion; 53% Thermal Efficiency

Green Car Congress

Researchers at the University of Wisconsin, led by Dr. Rolf Reitz, are investigating a blended dual-fuel (gasoline and diesel) concept to extend the operating range of partially premixed charge compression ignition combustion by using the varying fuel reactivity of the charge blend, which is determined in real time. SAE 2007-01-0191).

Wisconsin 225
article thumbnail

New split-cycle concept to control diesel HCCI combustion

Green Car Congress

A team from Universita degli Studi di Pisa (Italy) and Rolf Reitz at the University of Wisconsin-Madison are proposing a novel combustion concept—Homogenous Charge Progressive Combustion (HCPC)—based on a split-cycle principle to control HCCI combustion in diesel-fueled engines. ICEF2007-1743 (2007). Tamagna, D.,

Concept 318
article thumbnail

DOE renews funding for three Bioenergy Research Centers for 5 more years; $375M investment

Green Car Congress

Emphasis in the next five years will be on bringing new methods and discoveries to maturity, developing new lines of research, and accelerating the transformation of scientific breakthroughs into new technologies that can transition to the marketplace.

Renewable 225
article thumbnail

UW-Madison engineer collaborating with entrepreneur on 6-cycle, external combustion engine; could be up to 30% more efficient than standard diesel

Green Car Congress

Shedd said the engine could be up to about 30% more efficient than a standard diesel engine, depending on the engine load and speed. In contrast, he says, the K6 can be made by modifying existing diesel engines in a way that is both realistic and manufacturable. —Timothy Shedd. Kashmerick and Timothy A.

Engine 186
article thumbnail

US DOT Awards $100M in Recovery Act Funds to 43 Transit Projects to Reduce Energy Consumption and Greenhouse Gas Emissions

Green Car Congress

Stationary Fuel Cells and Hybrid Transit Buses Incremental Costs: The purchase of diesel-electric hybrid transit buses and stationary fuel cells for use in the statewide bus system in Connecticut. Composite body electric buses: Replace conventional diesel transit buses with 35-ft composite body electric transit buses.

Emissions 256