Green Car Congress
JUNE 23, 2014
At the US Department of Energy’s (DOE’s) Annual Merit Review meeting in Washington, DC last week, Michael Ruth from Cummins noted that the DOE program target for the project is a fuel economy (CAFE) target of 26 mpg (9.05 Resources (DOE will publish Merit Review presentations on its website.). Earlier post.). Weigert, E.,
Green Car Congress
JULY 11, 2017
Diesel vehicles have had a rough time penetrating the US light-duty vehicle market, reflecting outdated negative perceptions, higher fuel prices for diesel than for gasoline, the cost of complying with stringent US emission standards, and rapidly improving gasoline engines. A mid-term review will be conducted this year. Background.
Green Car Congress
AUGUST 25, 2015
A team of engineers from GM Powertrain, Ford and FCA have published a detailed review of how to estimate the engine efficiency benefits of higher octane fuel—e.g., fuel with higher ethanol content—for part- and full-load operation for different engine types and fuel assumptions. In their study, Leone et al.
Green Car Congress
MAY 18, 2015
Conflicting evidence does not support making a firm conclusion on the fuel consumption benefit of catalysed Exhaust Gas Recirculation (EGR), according to a review of current studies by a team at the University of Bath (UK). According to the review, the conversion of HCs, CO, and NO in the exhaust gas by the catalyst can result in up to a 4.5%
Green Car Congress
NOVEMBER 1, 2016
In its new report on downsized and boosted gasoline engine technologies ( earlier post ) the ICCT highlighted Ricardo’s work on an “extreme” Miller cycle concept with high (13:1) compression ratio (CR) and central direct injection in a downsized boosted engine. Ricardo continues to develop the concept. Resources.
Green Car Congress
JUNE 23, 2016
Although gasoline direct injection (GDI) enables downsizing with its increased power and lower fuel consumption, it also results in higher particulate emissions. These are regulated by particle number (PN) in Europe; the limit value for GDI PN emissions will be the same as for light-duty diesel cars in 2017 under Euro 6c. Johnson, T.,
EV Central
MARCH 10, 2024
Despite sounding expensive for a light SUV, Lexus says its cheapest genuine rival from fellow premium brands cost much more. “The LBX will attract affluent younger customers to the brand as well as provide another option for existing Lexus customers wanting to either downsize or have a second Lexus vehicle for casual weekend fun.”
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