Electromagnetic only vane coordination of a cat and mouse engine

A method for achieving coordinated rotation of shafts of a rotary-vane machine (of the cat-and-mouse type) which has two coaxial shafts with attached vanes creating between themselves chambers of variable volume, in which the strokes of intake, compression, power, and exhaust occur, with shaft position sensors, with reversible electrical machines on each shaft, with an electronic system for controlling the currents in the reversible electrical machines, with an energy storage unit, and with an electrical load, the method comprising:

• determining by calculation or empirically total work done by gases WT during the power and compression strokes,
• determining by calculation or empirically time of one stroke ts during which the reversible electrical machine applies to the trailing shaft an accelerating torque which at angle θ+φ1 performs a work equal to:
• WT(θ+φ1)/(φ2−φ1),
• wherein θ is the angular width of a vane, φ1 is the angular size of a chamber at the end of compression, φ2 is the angular size of a chamber at the start of compression, whereas the reversible electrical machine applies to the leading shaft an decelerating torque which at angle θ+φ2 performs a work equal to:
• −WT(θ+φ2)/(φ2−φ1),
• calculating the initial speed of the shafts ω0 for continuous, uniform rotation:
• ω
• o
• =
• π
• N
• t
• s
• wherein N is number of vanes attached to each shaft,
• providing the shafts with this initial speed ω0 for continuous, uniform rotation, during which the direction of torques applied by the reversible electrical machines alternates such that, during each stroke, an accelerating torque is applied to the trailing shaft which performs work equal to WT(θ+φ1)/(φ2−φ1), whereas a decelerating torque is applied to the leading shaft which performs work equal to −WT(θ+φ2)/(φ2−φ1),
• moreover the method does not contain any mechanical linkages which can influence rotation of the shafts.

A method of coordination of rotation of shafts of a rotary vane machine, of the cat-and-mouse type, in the stationary mode of operation, which has two coaxial shafts, shaft 1 and shaft 2, with attached vanes creating between themselves chambers of variable volume where the strokes of an internal combustion engine occur, said machine which has shaft position sensors, a reversible computer controlled electrical machine at least on one of the shafts, an electrical energy storage unit and an electrical load, the method comprising:

• applying electromagnetic torques to shaft 1, if there is an electric machine on shaft 1, in such a way that when a pressure in the power chamber decelerates the shaft 1, the accelerating torque τ1 is applied and when a pressure in the power chamber accelerates the shaft 1, the decelerating torque −τ1 is applied,
• applying electromagnetic torques to shaft 2, if there is an electric machine on shaft 2, in such a way that when a pressure in the power chamber decelerates the shaft 2, the accelerating torque τ2 is applied and when a pressure in the power chamber accelerates the shaft 2, the decelerating torque −τ2 is applied,
• providing that the sum of the works performed by above mentioned electromagnetic torques and gases during two consecutive strokes is zero,
• complete absence of any mechanical linkages or devices that could affect the nature of the rotation of the shafts.