A passenger car variable mass crankshaft is here reported. This particular device consists of an auxiliary flywheel with a high moment of inertia. it spins freely at above 1500 (rpm), thanks to centrifugal masses which disengage it from the crankshaft. The flywheel is connected once again to the crankshaft, when the engine speed reduces to under 1400 (rpm). In this way, the mass of the crankshaft is increased at low engine speed (e.g. idle condition) and the magnitude of rotational fluctuations are consequently lowered. On the contrary, the extra mass is unnecessary and undesirable above a certain engine speed and is therefore reduced, so improving both the vehicle acceleration, engine braking performance and fuel economy. The variable mass crankshaft device has been mounted onto a passenger car, in order to determine fuel consumption and acceleration performance, both through theoretical investigations and by means of experimental tests on a roller-type bench.
Variable mass crankshaft for general car performance improvement: Acceleration, fuel economy and emissions
Eine Kurbelwelle mit variabler Masse zur allgemeinen Leistungssteigerung von Pkw's: Beschleunigung, Kraftstoffersparnis und Schadstoffemissionen
1993
15 Seiten, 10 Bilder, 5 Tabellen, 6 Quellen
Aufsatz (Konferenz)
Englisch
Automobilbau , Fahrzeugmotor , Personenkraftwagen , technische Entwicklung , Betriebsverhalten , Leistungssteigerung , Kurbelwelle , Drehmasse , Steuerungs- und Regelungssystem , Drehzahlbereich , Prozessoptimierung , Kraftstoffeinsparung , Motorleistung , Beschleunigung , experimentelle Untersuchung , Versuchsstand , Leistungsbewertung , Schadstoffemission , Emissionsminderung
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