White Paper: Automotive

Diesel Engine Cylinder Deactivation for Improved System Performance over Transient Real-World Drive Cycles

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Eaton’s Vehicle Group, was part of a team that authored “Diesel Engine Cylinder Deactivation for Improved System Performance over Transient Real-World Drive Cycles” which received the 2018 SAE John Johnson Award for Outstanding Research in Diesel Engines from the Society of Automotive Engineers.

This award-winning research paper illustrates how cylinder deactivation (CDA) is a fuel-efficient strategy to maintain desirable diesel aftertreatment temperatures for idle and low-load operation drive cycles, while at the same time producing a four to 35 percent reduction in fuel consumption.

The theory was proven by producing a real-world drive cycle summary using a half-engine CDA model and data from the Orange County Bus Cycle, which is based on the driving patterns of urban transit buses in the Los Angeles area.

The paper also showed that implementing this CDA strategy on the Orange County Bus Cycle resulted in a 5.6 percent fuel savings for the first run of the day while a greater savings of 8.7 percent could be realized following warmup.

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