Green Car Congress

JULY 18, 2022

The California Air Resources Board (CARB) has released the results of a multiyear study evaluating exhaust emissions from the use of California Reformulated Gasoline (CaRFG) that contains 15 volume percent ethanol (E15). The study used two fuels—an E10 and E15.

Fuel Economy 186

Fuel Economy Economy Fuel Ozone 186

Green Car Congress

JUNE 1, 2017

Using statistical methods, the scientists infer emissions from these data within a radius of about one kilometer of the measurement location. This has been hard to achieve for diesel powered cars, which nowadays mostly rely on selective catalytic reduction due to the high air to fuel ratio during combustion. —Thomas Karl.

Europe 150

Europe Diesel Emissions Pollution 150

Green Car Congress

MAY 12, 2017

Gasoline direct-injection (GDI) engines have higher fuel economy compared to the more widely used port fuel injection (PFI) engines. We estimate ozone and SOA formation potential. Therefore, the secondary organic aerosol and ozone formation potential of the exhaust does not depend on engine technology.

Fleet 207

Fleet Engine Global Fuel Economy 207