A toroidal continuously variable transmission includes: input and output discs; a power roller sandwiched between the input disc and the output disc so as to be tiltable; a trunnion supporting the power roller and configured to be tiltable about a tilt axis of the power roller and reciprocatable in a direction along the tilt axis; a piston attached to a shaft portion of the trunnion so as to be externally fitted to the shaft portion; and a cylinder forming a pressure chamber which makes the piston reciprocate in the direction along the tilt axis. An inside gap is formed between an outer peripheral surface of the shaft portion of the trunnion and an inner peripheral surface of the piston.

A stepless speed changer applied to a CVT gearbox is provided which comprises a speed changing mechanism, a clamping mechanism, and a speed regulating mechanism, and the speed changing mechanism is mounted on a shaft body and connected with a power input mechanism and a power output mechanism respectively along both sides of the shaft body; the clamping mechanism is distributed along an axial direction of the shaft body and located at both sides of the speed changing mechanism, and the clamping mechanism guarantees the speed changing mechanism transmits a torque normally by use of pressurization of a first hydraulic system; the speed regulating mechanism is located at a radial end of the shaft body and combined with the speed changing mechanism, and the speed regulating mechanism achieves speed change of the speed changing mechanism by use of acceleration and deceleration control of a second hydraulic system, which solves the structural problems of the existing CVT gearbox, for instance, low input torque, limited speed-change range, high cost and the like. With a steel-ring friction pair replacing a chain-steel belt drive friction pair, both cost and manufacture difficulty are greatly lowered.

A system and method for compensating for the changing power requirements of an electrical grid. A first generator is mechanically linked to a turbine and electrically linked to a power grid, such that the generator converts rotational energy into electrical energy to supply the power grid. The rotor of the generator is mechanically linked to the rotor of one or more additional generators, not connected to a turbine or the grid, via a continuously variable transmission. The turbine is maintained at optimal running speed. When the generator produces more electrical energy than required by the power grid, mechanical energy from the rotor is transmitted to the rotors of the additional generators. When the power grid requires more energy than generator produces, as the turbine runs at optimal efficiency, mechanical energy from the rotors of the additional generators is transmitted to the rotors of the first generator.

A system and method for compensating for the changing power requirements of an electrical grid. A first generator is mechanically linked to a turbine and electrically linked to a power grid, such that the generator converts rotational energy into electrical energy to supply the power grid. The rotor of the generator is mechanically linked to the rotor of one or more additional generators, not connected to a turbine or the grid, via a continuously variable transmission. The turbine is maintained at optimal running speed. When the generator produces more electrical energy than required by the power grid, mechanical energy from the rotor is transmitted to the rotors of the additional generators. When the power grid requires more energy than generator produces, as the turbine runs at optimal efficiency, mechanical energy from the rotors of the additional generators is transmitted to the rotors of the first generator.

A toroidal continuously variable transmission includes: first and second pistons attached to a shaft portion of a trunnion so as to be externally fitted to the shaft portion, the first and second pistons being arranged so as to be lined up in a direction along a tilt axis; and a cylinder forming a first pressure chamber which makes the first piston move toward a first side in the direction along the tilt axis and a second pressure chamber which makes the second piston move toward a second side in the direction along the tilt axis. The cylinder includes a first lubricating oil passage, and the shaft portion of the trunnion includes a second lubricating oil passage. A third lubricating oil passage through which the first lubricating oil passage communicates with the second lubricating oil passage is formed between the first piston and the second piston.

A toroidal continuously variable transmission includes: first and second pistons attached to a shaft portion of a trunnion so as to be externally fitted to the shaft portion, the first and second pistons being arranged so as to be lined up in a direction along a tilt axis; and a cylinder forming a first pressure chamber which makes the first piston move toward a first side in the direction along the tilt axis and a second pressure chamber which makes the second piston move toward a second side in the direction along the tilt axis. The cylinder includes a first lubricating oil passage, and the shaft portion of the trunnion includes a second lubricating oil passage. A third lubricating oil passage through which the first lubricating oil passage communicates with the second lubricating oil passage is formed between the first piston and the second piston.

An electric power generation controller for use in an aircraft is a controller of an electric power generating apparatus including a manual transmission configured to change speed of rotational power of an aircraft engine, transmit the rotational power to an electric power generator, and switch a gear stage by a friction clutch pressed by an actuator. The electric power generation controller includes a manual transmission control section configured to control the manual transmission. The manual transmission control section includes: a shift command section configured to output a shift signal which switches the gear stage of the manual transmission; and a clutch control section configured to, when switching the gear stage of the manual transmission, control clutch pressure of the actuator such that the friction clutch becomes a half-engaged state.

An electric power generating apparatus for use in an aircraft is an electric power generating apparatus connected through an emergency cut-off device to a gear box such that the gear box can transmit power to the electric power generating apparatus, the gear box being configured to decrease speed of rotational power of an aircraft engine. The electric power generating apparatus includes: a manual transmission configured to change the speed of the rotational power transmitted from the emergency cut-off device and including a plurality of gear stages; and an electric power generator to which the rotational power which has been changed in speed by the manual transmission is transmitted.

A drive system comprising a rotatable input disc that receives an input rotational force and rotates about a longitudinal axis, where the input disc comprises driving features formed on its interior face. The drive system also comprises a rotatable output disc that rotates about the longitudinal axis and comprises driving features formed on its interior face, where the output disc provides an output rotational force. The drive system comprises a drive core between the interior face of the input disc and the interior face of the output disc to translate the input rotational force to the output rotational force. As the input disc is rotated by the input rotational force, engaging feature(s) of power disc(s) in the drive core engages the driving features of the input disc causing rotation of each power disc. As the power disc(s) is rotated, the engaging feature(s) of each power disc(s) engages the driving features of the output disc causing rotation of the output disc.

A drive system comprising a rotatable input disc that receives an input rotational force and rotates about a longitudinal axis, where the input disc comprises driving features formed on its interior face. The drive system also comprises a rotatable output disc that rotates about the longitudinal axis and comprises driving features formed on its interior face, where the output disc provides an output rotational force. The drive system comprises a drive core between the interior face of the input disc and the interior face of the output disc to translate the input rotational force to the output rotational force. As the input disc is rotated by the input rotational force, engaging feature(s) of power disc(s) in the drive core engages the driving features of the input disc causing rotation of each power disc. As the power disc(s) is rotated, the engaging feature(s) of each power disc(s) engages the driving features of the output disc causing rotation of the output disc.