Green Car Congress

JANUARY 5, 2015

Comparison of DSF fuel economy gains and costs with competing technologies, from Tula’s 2013 SAE paper. With intake or exhaust (or both) valve deactivation in place, inactive cylinders are prevented from pumping air through the engine, which enables effective use of three-way catalyst technology. Wilcutts et al. Click to enlarge.

GM 150

GM Engine Fuel Fuel Economy 150

Green Car Congress

OCTOBER 20, 2012

They found that the level of emissions of regulated and unregulated pollutants in diesel exhaust depends on fuel, load, engine calibration, and exhaust aftertreatment technology. Information pertaining to these emissions in diesel engine exhaust is much less complete than that for the regulated pollutants. —Chin et al.

Pollution 231

Pollution Diesel Emissions Engine 231

Green Car Congress

MAY 3, 2016

Its basic operating mechanism is to apply combinations of very early or late injection timing, high injection pressure, low compression ratio, and high exhaust gas recirculation (EGR) levels to achieve a separation between the end of injection and the start of combustion, so that a premixed charge can be achieved before ignition occurs.

Diesel 150

Diesel Renewable Emissions Fuel 150