Dedicated EGR Vehicle Demonstration
Copyright policy )Dedicated EGR Vehicle Demonstration
<div class="section abstract"><div class="htmlview paragraph">Dedicated EGR (D-EGR) is an EGR strategy that uses in-cylinder reformation to improve fuel economy and reduce emissions. The entire exhaust of a sub-group of power cylinders (dedicated cylinders) is routed directly into the intake. These cylinders are run fuel-rich, producing H<sub>2</sub> and CO (reformate), with the potential to improve combustion stability, knock tolerance and burn duration.</div><div class="htmlview paragraph">A 2.0 L turbocharged D-EGR engine was packaged into a 2012 Buick Regal and evaluated on drive cycle performance. City and highway fuel consumption were reduced by 13% and 9%, respectively. NO<sub>x</sub> + NMOG were 31 mg/mile, well below the Tier 2 Bin 5 limit and just outside the Tier 3 Bin 30 limit (30 mg/mile).</div></div>
- Southwest Research Institute United States
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