14 results about "Starter generator" patented technology

The embodiments described herein provide a system and method for using an integrated starter generator (ISG) for electric torque assistance in specific strokes of a 2-stroke or 4-stroke internal combustion (IC) engine (300) with reduced inertial mass compared to a conventional IC engine with inertial mass loading. This is intended to overcome a speed variation problem caused by the engine's lower inertia at low speeds and idle, thus compensating for the crankshaft's lower speed. Furthermore, allowing the 2-stroke and 4-stroke engines to operate with a lean fuel-air mixture improves emissions at low speeds and idle, leading to better control of IC engine emissions.

A method for starting a motorcycle engine is performed through an engine starting control system including a controller, a power supply apparatus coupled to the controller, and an integrated starter and generator coupled to the controller, the power supply apparatus, and the motorcycle engine. The method includes driving the integrated starter and generator to perform reverse operation at a reverse operation constant torque value within a reverse operation time until the reverse operation time ends; controlling the power supply apparatus to output a forward operation constant current to the integrated starter and generator after the integrated starter and generator stops the reverse operation, to perform forward operation; and starting the motorcycle engine through the integrated starter and generator when a forward operation angular velocity value is greater than or equal to an expected value. The method starts the motorcycle engine effectively. Furthermore, a corresponding system is also provided.

The application discloses a three-stage starting generator rotor position estimation method suitable for a single-phase exciter, and belongs to the field of motor control. The method estimates the rotor d-axis current and extracts its outer envelope by applying an alternating voltage on the exciter stator side and collecting the stator current. The outer envelope crest and trough are detected to generate the discrete position state of the exciter. The discrete state of the main motor is generated according to the pole pair ratio and the duration is recorded. The discrete rotor position of the main motor and the interval average speed are calculated accordingly. The continuous rotor angle is obtained by using the previous interval speed compensation, and the real-time rotor position is obtained by combining the initial position. The application can realize high-precision estimation of the rotor position of the main motor by using only the electrical signal characteristics of the single-phase exciter itself, without the need for a mechanical position sensor. The application solves the problem that the existing method cannot be applied to the single-phase exciter structure, and has good stability and robustness in severe environments such as aviation high temperature and high pressure, strong electromagnetic interference and the like.

1. Name of the design product: integrated starter generator (air cooling). 2. Use of the design product: used as an integrated starter generator of an aero-engine. 3. Design points of the design product: in shape. 4. Picture or photo best indicating the design points: perspective view 1.

Aspects of the present invention relate to a control system for controlling torque distribution between a first axle (110) and a second axle (120) in a vehicle (100), the control system including one or more controllers. The control system is configured to detect whether the vehicle is operating over limit and to detect the vehicle speed. When the vehicle is operating over limit and the vehicle speed is below a first speed threshold, the torque distribution is controlled to reduce the over-limit operating torque to the first axle and increase the over-limit operating torque to the second axle. The vehicle may be a hybrid vehicle including an internal combustion engine (ICE) (201), a belt integrated starter generator (B-ISG) (205), and an electric rear axle drive (ERAD) (204).

The utility model relates to high -power turbo shaft engine test board electrical system belongs to engine test technical field, including alternating current source, test board controller, first alternating current direct current converter, second alternating current direct current converter, direct current direct current conversion unit, alternating current source connects respectively dynamometer, emergency power supply, still through first alternating current direct current converter connection fuel oil electric governing pump distribution input end, through second alternating current direct current converter connection starting generator distribution input end, emergency power supply passes through direct current direct current conversion unit and connects engine electronic controller, test board controller respectively, the system still includes distributed data acquisition module and sensor signal isolation unit. The existing turbo shaft engine test board electrical device electrical wiring complex, control precision low, system reliability poor problem is solved.

The title of this application is "Method for identifying belt slip in a starting system comprising a BISG". The invention relates to a method for identifying belt slip in a starting system (1) for starting an internal combustion engine of a motor vehicle, the starting system (1) having a belt-driven integrated starter-generator (2) and having a positive tensioner (5) which can actuate a belt (6) between a low tension position (N) and a high tension position (H). A threshold value is defined above which the positive tensioner (5) switches from the low tension position (N) to the high tension position (H) over a continuous period of time, after which a period of time the threshold value for belt slip (6) is reduced.

Method for starting an internal combustion engine by means of a belt drive with a belt starter generator in a vehicle, in which the belt starter generator (2) is energized to drive a belt (3) of the belt drive (1) and a torque of the belt (3) is transmitted to a crankshaft (10) coupled to the internal combustion engine (7), characterized in that at least one parameter (P) of the belt starter generator (2) is set as a function of temperature for starting the internal combustion engine (7), characterized in that the at least one parameter (P) of the belt starter generator (2) is set as a function of the temperature (Tv) of the internal combustion engine (7) when a difference between the temperature (Tv) of the internal combustion engine (7) and an ambient temperature (TA) of the vehicle exceeds a predetermined difference threshold.

A vehicle engine commissioning system includes the following: a cold start module configured to selectively generate a cold start instruction when the ambient air temperature is lower than a predetermined temperature; a starter control module configured, in response to the generation of the cold start instruction, to engage a starter motor with the crankshaft of an engine and to apply power from a first battery to the starter motor; and a belt-driven starter generator control module (BSG control module) configured to: not apply power from a second battery to an BSG after the generation of the cold start instruction until the engine speed is greater than a first predetermined speed;and in response to a determination that the engine speed of the engine is greater than the first predetermined speed, applying power from the second battery to the RSG and further increasing the engine speed of the engine.

A rotary machine assembly includes a rotary machine having a cover defining an outer surface of the rotary machine and a stator disposed within the cover. The stator is fixed relative to the cover. The rotary machine further includes a shaft rotatably disposed at least partially within the cover to define a rotational axis. The shaft includes a first end connectable to an aircraft engine and a second end opposite the first end. The rotary machine further includes a rotor attached to the shaft, the rotor being movable relative to the stator, and a power module including at least one MOSFET that periodically reverses a current direction of the rotor. The power module includes the at least one MOSFET disposed within the cover.

The embodiment of the application discloses an internal high-voltage direct-current power generation system and a parallel control method thereof, relates to the technical field of starting power generation, and can improve the utilization rate of the internal space of an engine and improve reliability. The application comprises a double-rotor electrically excited doubly salient motor installed in the internal space of the engine and an external parallel power supply system. A magnetic isolation material is installed in a stator core, the stator core and an outer rotor core constitute a starter generator installed on a high-pressure shaft of the engine, and the stator core and an inner rotor core constitute a generator installed on a low-pressure shaft of the engine. The starter generator and the generator are combined into a double-rotor electrically excited doubly salient motor, the power density and the utilization rate of the internal space of the engine are improved, parallel control is performed through the external parallel power supply system, the power generation operation of the system is more reliable, and the dynamic performance and the working efficiency of the engine are improved.

This invention discloses a control device and integrated control method for a high-speed switched reluctance starter generator. The control device includes a main power circuit and a control circuit. The main power circuit includes a starter soft-start circuit, a permanent magnet generator rectifier circuit, a dual three-phase unbalanced half-bridge circuit, a bleeder circuit, and a drive circuit. The starter soft-start circuit is connected to the dual three-phase unbalanced half-bridge circuit via the bleeder circuit. The permanent magnet generator rectifier circuit is connected to the dual three-phase unbalanced half-bridge circuit via the permanent magnet generator soft-start circuit and the bleeder circuit. The drive circuit... The input terminal is connected to the control circuit, and the output terminal is connected to each IGBT transistor in the dual three-phase asymmetrical half-bridge circuit. The control circuit is also connected to the contactors and relays in the starting soft-start circuit, permanent magnet motor rectifier circuit, permanent magnet motor soft-start circuit, and discharge circuit in the main power circuit. The control device for the switched reluctance starter generator is used to control the connection and disconnection of each contactor and relay in the main power circuit, as well as the control of the dual three-phase asymmetrical half-bridge circuit, to achieve integrated control of the starting and power generation of the switched reluctance starter generator. The technical solution of this invention solves the problem that existing research on switched reluctance motors is generally focused on low speed and small to medium power, while research and engineering application practice of high-power, high-speed switched reluctance generators are still lacking.

A method for identifying belt slip in a starting system for starting an internal combustion engine of a motor vehicle. The starting system has a belt-driven integrated starter-generator (BISG) and an active tensioner that can actuate a belt between a position for low tension and a position for high tension. The method includes defining a first threshold value of the belt-driven integrated starter-generator, determining a torque value of the BISG, switching the active tensioner from the position for low tension to the position for high tension for a first predetermined period of time if the determined torque value is above the first threshold value, and reducing the first threshold value to a second threshold value for a second predetermined period of time following the first predetermined period of time.