European Engineering Directive

Raising public awareness of solutions and problems associated with science and technology also becomes more pressing as engineering artefacts pervade more and more into our daily lives. A fine example of this linked into the recent European Union directive on managing waste associated with electronic and electrical equipment (WEEE). The legal aspects of this directive are profound making manufacturers responsible for the eventual disposal of... 

The vast majority of propane fuel systems used on light-duty vehicles to date have been of the mechanical-control type that meter propane in proportion to the amount of air used by the engine (air-valve and venturi-type mixers ). While these systems work well, their capabilities have been overshadowed by gasoline fuel injection systems and often lag behind gasoline systems in terms of acceleration, driveability, and cold-start performance. Chrysler Canada and one European equipment manufacturer offer liquid propane injection systems that are direct analogs to gasoline port fuel injection systems. These systems should have inherent performance advantages compared to the vaporized propane fuel systems. 

At the beginning, European regulations concerning diesel engine emissions were only effective for three classic pollutants for light duty vehicles (Directive 70/220/EEC modified by Directive 83/351/EEC) and on black smoke emissions (Directive 72/306/EEC). 

The term (EC) is legally defined in the Council Directive of 20 December 1979, Council of the European Communities (now the European Union, EU). The therm (U.S.) is legally defined in the Federal Register of July 27, 1968. Although the therm (EC), which is based on the International Table Btu, is frequently used by engineers in the United States, the therm (U.S.) is the legal unit used by the U.S. natural gas industry. 

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