Technical Paper
Application of an Electric Boosting System to a Small, Four-Cylinder S.I. Engine
2003-09-16
2003-32-0039
The consequences of global warming have forced the governments of developed economies to impose strict regulations on the emission of so called ‘green house gases’. Carbon dioxide, a by-product of fossil fuel combustion, is a major contributor to global warming. The focus of government treaties, in the face of continued globalization and third world development, has been to stabilize contributions of carbon dioxide to the atmosphere. Vehicle manufacturers and suppliers have tackled legislation and consumer pressures in a variety of ways. One of the most effective ways to reduce fuel consumption of passenger vehicles, consequently reducing their CO2 emissions, is so-called “engine downsizing”. This involves the improvement of the torque of a smaller displacement engine with respect to (w.r.t.) a given engine installed in a vehicle, and the use of longer gear ratios in the transmission.