A rotational position sensor arrangement having first and second sensors positioned adjacent to an axial face of a target disc. The target disc has the axial face either one wave profile or radially spaced apart first and second wave profiles, having respectively, a first plurality of segments and a second plurality of segments, with each of the segments being formed with axially offset peaks and valleys which extend along radial lines. The valleys separate the segments, and the number of the first plurality of segments is different than the number of the second plurality of segments. The first and second sensors are located at different radial distances from the axis and signal a controller with data on a field variance due to a difference in at least one of a size or location of the one wave profile or the first and second wave profiles as they pass the first and second sensors in order to determine a rotational speed and/or position.

A transmission system includes a transmission housing and a countershaft having no less than two gears, with the gears defining a plurality of gear ratios. The transmission system also includes a module housing, a first output shaft rotatably coupled to the countershaft, and a second output shaft rotatably coupled to the countershaft. The transmission system further includes a first clutch configured to selectively rotatably couple the first output shaft to the countershaft. The transmission system also includes a second clutch configured to selectively rotatably couple the second output shaft to the countershaft. The transmission system further includes an electric machine configured to deliver rotational power to at least one of the first and second output shafts to deliver rotational power to the countershaft. The countershaft is rotatably coupled to either of the first and second output shafts for all of the gear ratios.

A transmission system includes a transmission housing and a countershaft having no less than two gears, with the gears defining a plurality of gear ratios. The transmission system also includes a module housing, a first output shaft rotatably coupled to the countershaft, and a second output shaft rotatably coupled to the countershaft. The transmission system further includes a first clutch configured to selectively rotatably couple the first output shaft to the countershaft. The transmission system also includes a second clutch configured to selectively rotatably couple the second output shaft to the countershaft. The transmission system further includes an electric machine configured to deliver rotational power to at least one of the first and second output shafts to deliver rotational power to the countershaft. The countershaft is rotatably coupled to either of the first and second output shafts for all of the gear ratios.

A magnet temperature estimating device for a motor provided with a rotor having magnets and configured to output a rotational motive force, and a stator having a plurality of coils opposing the rotor with an aperture therebetween, is provided. The device includes a sensor configured to detect an induced voltage induced by rotation of the rotor, and a controller configured to control the motor by supplying power to the plurality of coils in response to an input of a detection signal from the sensor. The controller estimates a temperature of one of the magnets based on an amplitude of a frequency spectrum corresponding to a given frequency, among frequency components constituting the induced voltage.

A magnet temperature estimating device for a motor provided with a rotor having magnets and configured to output a rotational motive force, and a stator having a plurality of coils opposing the rotor with an aperture therebetween, is provided. The device includes a sensor configured to detect an induced voltage induced by rotation of the rotor, and a controller configured to control the motor by supplying power to the plurality of coils in response to an input of a detection signal from the sensor. The controller estimates a temperature of one of the magnets based on an amplitude of a frequency spectrum corresponding to a given frequency, among frequency components constituting the induced voltage.

A powertrain has an internal combustion engine provided with an accessory transmission that includes a first pulley connected to a crankshaft of the engine, a second pulley connected to a shaft of an electric machine, and a belt connecting the first and the second pulleys to each other to rotate in the same direction of rotation (R). The electric machine is operated to supply an active torque to the second pulley during start-up of the internal combustion engine by means of a starter motor.

A powertrain has an internal combustion engine provided with an accessory transmission that includes a first pulley connected to a crankshaft of the engine, a second pulley connected to a shaft of an electric machine, and a belt connecting the first and the second pulleys to each other to rotate in the same direction of rotation (R). The electric machine is operated to supply an active torque to the second pulley during start-up of the internal combustion engine by means of a starter motor.

A system and method are disclosed for retrofitting mechanical workover rigs with electric motors to create a hybrid mechanical and electric drive. The process involves the replacement of the combustion engine with one or more electric motors to drive various components of the rig. The retrofit design allows for cleaner, more precise, and more efficient operations while eliminating the need for hydrocarbons as fuel and thus reducing associated greenhouse gas emissions. It also enables the installation of a computer control which, among other benefits, allows more precise control of the rig's operations than is possible with a mechanical transmission. The electric motors may be driven by a battery energy storage system.

A system and method are disclosed for retrofitting mechanical workover rigs with electric motors to create a hybrid mechanical and electric drive. The process involves the replacement of the combustion engine with one or more electric motors to drive various components of the rig. The retrofit design allows for cleaner, more precise, and more efficient operations while eliminating the need for hydrocarbons as fuel and thus reducing associated greenhouse gas emissions. It also enables the installation of a computer control which, among other benefits, allows more precise control of the rig's operations than is possible with a mechanical transmission. The electric motors may be driven by a battery energy storage system.

A drive arrangement for a motor vehicle comprises an electric driving engine, an internal combustion engine, and a shift transmission having several gears and a multiple clutch. A first transmission element of the shift transmission is coupled in a torque-tight manner to a first rotational part of the multiple clutch and a second transmission element of shift transmission is coupled in a torque-tight manner to a second rotational part of the multiple clutch. A rotor of the electric driving engine is coupled in a torque-tight manner to a third rotational part of the multiple clutch, wherein the internal combustion engine is coupled in a torque-tight manner to a third transmission element of the shift transmission.