Cummins Inc. and Tula Technology, Inc., a leader in propulsion efficiency, announced at SAE International’s WCX the results of their collaborative study on the effectiveness of Tula’s diesel Dynamic Skip Fire (dDSF) in reducing nitrogen oxides (NOx) and carbon dioxide (CO2) emissions on a Cummins X15 HD Efficiency Series diesel.
Cummins, Tula Demonstrate Emission-Reducing Diesel Technology
April 13, 2021
Cummins Inc., a corporation of business segments that design, manufacture, distribute and service power solutions, and Tula Technology Inc., a company that specializes in propulsion efficiency, have unveiled the results of their collaborative study on the effectiveness of Tula’s diesel Dynamic Skip Fire (dDSF) in reducing nitrogen oxides (NOx) and carbon dioxide (CO2) emissions on a Cummins X15 HD Efficiency Series diesel engine.
Low-load cycle performance was estimated with a well-calibrated powertrain simulation tool to accurately capture the low-load system operation and emissions. This system showed a 74% reduction in NOx and a 5% reduction in CO2 compared with today’s clean diesel technologies. In comparison with current engine technologies and modifications to the thermal management techniques, dDSF saved 20% in fuel – validating dDSF as a more fuel-efficient means of reducing NOx.
Cummins and Tula Study of Diesel Dynamic Skip Fire (dDSF™) Shows 74% Reduction in NOx Emissions apnews.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from apnews.com Daily Mail and Mail on Sunday newspapers.
The clock is ticking for trucking manufacturers to meet challenging new emissions requirements in 2024 and 2027.
On those two horizons are reductions of NOx by up to 90 percent, CO2 by up to 25 to 30 percent plus new low load cycle and in-use specifications, as Eaton makes clear in a video on diesel cylinder deactivation (CDA). This emerging technology holds real promise in reducing emissions while improving fuel economy, but it’s the emissions battle that’s really taken center stage and driven the formation of various partnerships.
Eaton has worked with Cummins to test CDA in a Cummins Efficiency Series X15 engine. Cummins has also worked with Jacobs Vehicle Systems and Tula on cylinder deactivation. They all have the same goal of getting diesel engines up to the job of meeting new low-load requirements, like when the engine’s at idle or running at low RPMs. By shutting down half of the cylinders and decreasing air flow, CDA leads to increased exhaust temperature