2015 Cleaner Diesel Exhaust 
Green Car Congress
JANUARY 27, 2015
The first study to conduct a comprehensive evaluation of lifetime exposure to new technology diesel exhaust (NTDE)—i.e., exhaust from heavy-duty diesel engines meeting EPA 2007 and later emissions requirements—has found no evidence of carcinogenic lung tumors. Earlier post.) Earlier post.)
The Truth About Cars
DECEMBER 22, 2023
The United States Department of Justice has accused Cummins of installing emissions defeating devices on diesel motors and decided to fine the company $1.67 Another 330,000 taboo emissions controlling devices were also said to have been installed on newer diesel pickups built through 2023. billion for violating the Clean Air Act.
Green Car Congress
OCTOBER 24, 2012
liter natural gas engine, currently in development and expected to be available in 2015. diesel engine and will use Cummins Westport’s proven, spark-ignited, stoichiometric-cooled exhaust gas recirculation (SEGR) technology. The company plans to utilize the Cummins Westport ISB6.7 G, a mid-range 6.7 The ISB6.7 The ISB6.7
Green Car Congress
AUGUST 4, 2011
However, while Mazda plans to offer hybrid vehicles in the medium-term, its engineers are pushing hard to increase the efficiencies of both the gasoline and diesel platforms, moving toward what they call “the ideal Internal Combustion Engine.” This corresponds to a 23% reduction in fuel consumption and, therefore, CO 2 output.).
Green Car Congress
AUGUST 8, 2017
This new proprietary combustion engine combines the advantages of gasoline and diesel engines to optimize environmental performance, power and acceleration performance. SKYACTIV-X even equals or exceeds the latest SKYACTIV-D diesel engine in fuel efficiency. Earlier post.). Earlier post.). Yamasaki, Y., Umahashi, S., Uesugi, Y.,
Green Car Congress
SEPTEMBER 5, 2016
This contrasted with the trends for the preceding five year period (2005–2009) when a wider upward tendency was observed in ΔNO 2 concentrations; this can be attributed in part to a 3% rise in the number of diesel buses and coaches between 2005 and 2009 and to the failure of tighter Euro class emissions standards. between the two periods.
Green Car Congress
APRIL 14, 2017
The proposed emission standards would cut toxic and smog-causing emissions by 85% for diesel particulate matter (PM) and 66% for oxides of nitrogen (NO x ) below current Tier 4 levels. The key technologies used to achieve these reductions in NO x and PM emissions are exhaust gas recirculation and improvements to the cooling system.
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