Computer optimization of camshaft lift profiles for a NASCAR V-8 engine restrictor plate
Computer optimization of camshaft lift profiles for a NASCAR V-8 engine restrictor plate
- New search for: Novak, J.M.
- New search for: Kach, R.A.
- New search for: Novak, J.M.
- New search for: Kach, R.A.
The introduction of carburetor restrictor plates in NASCAR racing in 1988 necessitated the redesign of some engine components, such as the camshaft and exhaust headers, to re-optimize engine performance. This paper describes how an engine performance computer simulation code was used to quickly study the effects of the restrictor plate on the 'breathing' process of the Ford NASCAR V8 engine and determine the optimal intake and exhaust cam lobe profiles to maximize wide-open throttle torque and horsepower and greater average torque over the useful engine speed range for super speedways. The interaction between exhaust wavedynamics (i.E.'tuning') and cam events was investigated and shown to be of critical importance to the optimization of the engine's trapping efficiency. Details of the optimization study are presented and the physical mechanisms leading to significant improvements in engine performance are explained and discussed.
Document information
Computer optimization of camshaft lift profiles for a NASCAR V-8 engine restrictor plate
Rechneroptimierung von Nockenwellenerhebungskurven für einen NASCAR V8-Motor mit Drosselblende
1996
7 Seiten, 6 Bilder, 5 Tabellen, 2 Quellen
Conference paper
English
Nockenwelle , Nocken , Profil (Kontur) , Vergaser (Motor) , Simulationsprogramm , Rechnersimulation , Prozessoptimierung , Motorleistung , Motoreinstellung , Kraftfahrzeugmotor , Leistungssteigerung , Drehmoment , Einlassventil , Auslassventil , dynamische Eigenschaft , Wellenausbreitung , Verdichten , Drosselquerschnitt
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