This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Internal Combustion Engine with Sinusoidal Cam Transmission without Crankshaft
Technical Paper
911270
Annotation ability available
Sector:
Event:
Language:
English
Abstract
A new and unique four-stroke i.c. engine without the conventional crankshaft is described. A lobe plate, which moves the piston according to predictable laws of motion, transforms reciprocating movements into rotative ones.
The idea derives from the observation of the structure and functioning of pumps with axial plunger whose units plungerod, moving, holds closely to a plate whose angle of inclination determins the motion characteristics and the value of the stroke itself. The new solution introduces a more efficient method of transferring power from a piston to a driveshaft. A peculiar configuration of engine block has been designed, in which pistons, purposely designed, transmit power to a purposely shaped disk. Each piston follows the shape of this disk during the revolutions. The cam provides a broad range of engine displacements using only one block, varying only the piston laws of motion according to the different disks used. A prototype has been planned, its characteristics are shown, and the theoretical analysis has been performed.
Authors
Citation
Laforgia, D., "Internal Combustion Engine with Sinusoidal Cam Transmission without Crankshaft," SAE Technical Paper 911270, 1991.Also In
References
- Laforgia D. Candeo M. “Analisi di fattibilità di un motore con trasmissione del moto a disco inclinato” PROGETTARE n. 88 sept 1987
- Dadone A. Napolitano M. “Calcolo dei fenomeni non stazionari nei condotti dei motori a c.i.” Atti dell' Istituto di Macchine 1981
- Laforgia D. Ricci D. “Two Stroke Engine Exhaust Manifolds: a Theoretical and Experimental Study of Unsteady Flow Phenomena” International Congress on Modelling of Internal Combustion - Engines Valencia, Spain 8-11 June 1987
- Laforgia D. “Two-Stroke Engine Manifolds: Theoretical and Experimental Study of Unsteady Flow Phenomena” 22nd Intersociety Energy Convertion Engineering Conference (IECEC) Philadelphia, PA - USA August 10-14 1987
- Danieli G. “Simulazione del ciclo reale di un motore Diesel ad iniezione diretta” 4° AIMETA 1978
- Fortunato B. Dadone A. Napolitano M. “Predicting the performances of marine two-stroke compression ignition engines” Proceedings of 14th IECEC, Paper n. 799228 1979
- Laforgia D. Ficarella A. “Poppet Valve Flow Characteristics in Internal Combustion Engines” XII Annual Energy Sources Conference Houston TX (USA) 1989
- Taylor C.F. “The Internal Combustion Engine in Theory and Practice” I and II M.I.T. Press 1968