Patent ID: 8202066
Filing Date: 2012-06-19
Classification: F16D,Y10T

Abstract:
1. A piston engine comprising one or more air/gas-compressing cylinder/piston units, a crank mechanism connected to a piston in the one or more air/gas-compressing cylinder/piston units for movement of the piston, a flywheel connected to the crank mechanism; wherein the crank mechanism is drivingly connected to a rotor in an electric motor through a flexible coupling between the rotor and the crank mechanism, wherein the mass of the rotor is part of the mass of the flywheel; wherein the flexible coupling is torsionally rigid but otherwise flexible, thus taking up one or more of axial and/or angular differences of distances and angular difference, the flexible coupling comprising a sleeve body with a sleeve wall; wherein the shape of the sleeve wall results from the sleeve wall being provided with one or more radial slots distributed in relation to one another over the periphery and placed behind one another in the sleeve's longitudinal direction, the slots being distributed over the periphery; wherein the flexible coupling, the motor and the crank mechanism are constructed and assembled together to enable the rotor in the electric motor to serve as a flywheel for the crank mechanism.