How Mazda Reinvented the Diesel Engine By Lawrence Ulrich, popsci.com The company’s new diesel engine will get 44 mpg plus meet strict emission standards. Diesel-engine design­ers have long grap­pled with a dilem­ma: Reduc­ing emis­sions meant either cut­ting effi­cien­cy or adding expen­sive equip­ment. With the… RT @PopSci: How Mazda engineers reduced pollution, boosted mileage, and nixed…

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