Pinnacle’s opposed-piston scooter engine can meet NOx target with lean operation and ignition delay; little fuel economy hit
Green Car Congress
NOVEMBER 1, 2013
For such small vehicle applications, manufacturers are seeking a fuel-efficient means of reducing engine-out NO x to avoid the cost of implementing a 3-way catalyst and closed-loop-controlled fuel injection system. —Willcox and Cleeves (2013). When the entire vehicle costs around $700, that’s a significant difference.
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