Green Car Congress
JULY 14, 2016
The upside of gasoline direct injection (GDI) engines is widely seen as being improved fuel economy coupled with an increase in specific power (especially with turbocharging), enabling significant downsizing. A new study by a team at the University of Toronto has made a preliminary assessment of the climate trade-off (i.e., 6b01800.
Green Car Congress
MARCH 19, 2018
But gasoline engines are gaining ground against diesel engines thanks to a suite of efficiency technologies, such as direct injection, turbocharging and downsizing, cooled EGR, and variable valve timing. For instance, hybrid electric vehicles and diesel cars in the small (e.g., Renault Clio) and lower medium (e.g.,
Green Car Congress
AUGUST 10, 2009
Tom Cackette, Chief Deputy Executive Office of the California Air Resources Board, spent the bulk of his talk during the opening panel discussing the response to climate change, which he called “ the defining environmental challenge of this century. Differentiated Analysis of Downsizing Concepts”). smog and particulates. John Kirwan.
Green Car Congress
JULY 7, 2014
liter turbocharged gasoline engine has a combination water-cooled cylinder head, integrated exhaust manifold and twin-scroll turbocharger. To minimize turbo lag, the four-into-two exhaust manifold system pairs cylinders according to their expansion or compression stroke to reduce pumping losses and eliminate exhaust gas interference.
Green Car Congress
MAY 12, 2017
A new study quantifying emissions from a fleet of gasoline direct injection (GDI) engines and port fuel injection (PFI) engines finds that the measured decrease in CO 2 emissions from GDIs is much greater than the potential climate forcing associated with higher black carbon emissions from GDI engines. —Saliba et al.
Green Car Congress
NOVEMBER 22, 2016
However, although a CO 2 target of 70 g/km could be met without significant deployment of electric vehicles, the study found that exhausting all the potential gains from combustion engine technology improvements before transitioning to electric drive would be a relatively costly approach for vehicle manufacturers. Earlier post.).
Cars That Think
MARCH 29, 2022
Call it Peak ICE—the last hurrah of a technology that governments are ushering off the stage to combat climate change. Automakers are finding it difficult to challenge those boldface numbers with internal combustion alone, especially as engines are relentlessly downsized to meet regulations. And don’t forget sound.
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