Green Car Congress
NOVEMBER 6, 2014
In a newly published SAE paper, a team from Ford, General Motors and AVL argues that the exclusive use of a match blending approach to prepare ethanol-gasoline blends for regulatory emissions testing “has fundamental flaws”. 2014) “Issues with T50 and T90 as Match Criteria for Ethanol-Gasoline Blends,” SAE Int. Earlier post.).
Green Car Congress
NOVEMBER 11, 2013
A study by a team at the Propulsion Systems Research Labs, GM R&D has concluded that the combustion instability of homogeneous charge compression ignition (HCCI) at the low-load range is caused by lack of oxygen concentration rather than lower in-cylinder mixture temperature. Earlier post.). Earlier post.).
Green Car Congress
NOVEMBER 8, 2015
Gasoline direct injection (GDI) is a strategy to improve fuel efficiency that is rapidly gaining market acceptance. Several OEMs are working on combustion optimization and injection technologies that reduce particulate emissions in engines rather than through exhaust after-treatment. Ford and GM, will account for 11.5–13.5%
Green Car Congress
OCTOBER 16, 2012
Opel revealed more details about its new mid-size gasoline engine family at the Aachen Colloquium in Germany. For mass reduction the midsize gasoline engine features a two-piece crankcase design, supported at the lower end by a die-cast aluminum bedplate. The engine retains the proven concept of a turbine-integrated exhaust manifold.
Green Car Congress
JANUARY 9, 2012
GM says the ATS will be able to deliver peak highway fuel economy of more than 30 mpg. GM is offering a choice of three power-dense engines, including two new four-cylinder units—a standard 2.5L GM is offering a choice of three power-dense engines, including two new four-cylinder units—a standard 2.5L Earlier post.)
Green Car Congress
JUNE 17, 2015
GM will premiere the new 1.4 Both engines are members of the small gasoline engine family—a group of high-tech engines with three or four cylinders and a displacement below 1.6 liters of gasoline per 100 kilometers (48 mpg US) in the combined cycle (114 g/km CO 2 ). Earlier post.) Earlier post.)
Green Car Congress
JANUARY 28, 2016
The automotive catalytic converter, developed in the early 1970s primarily by General Motors and BASF/Engelhard and first deployed in 1975, changes exhaust pollutants into CO 2 , water vapor and nitrogen. Today, a typical original equipment automotive catalytic converter in a gasoline engine contains about $100 in precious metal.
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