I trust that most everyone will see this post as "on topic".
Efficient Utilitarian Truck Looks Good.............November 29, 2011
Efficient Utilitarian Truck Looks Good | New Energy and Fuel
Quote:
Mercedes has pushed for a working group of truck and trailer manufacturers under the umbrella of the German Association of the Automotive Industry, which has carried out further tests on the aerodynamics of semi-trailer tractors. Within the framework of the study, measurements in the wind tunnel at Mercedes-Benz concluded that modifications to the cab such as a supposedly aerodynamic extension result in merely minimal improvements where wind resistance is concerned.
They also learned there is much more potential in aerodynamic measures at the tail end of the trailer; a minor extension of the tail end in the form of a “boat tail” brings significant benefits. Four flaps measuring just 400 mm in length and positioned at an angle reduce the wind resistance of the entire semi-trailer tractor by nearly 10%. In arithmetical terms this corresponds to virtually 3% less fuel consumption or more than 1,000 liters of diesel a year. This is also shown by the simulations, which have been carried out for the aero trailer.
|
