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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

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