32results about How to "Reduce torque disturbance" patented technology

The invention discloses a system and a method for improving the operation of a hybrid vehicle. In one embodiment, the retention of the vehicle stopping on the slope is adjusted according to the gradient of the slope.

The invention provides a system and a method for obtaining torque estimation faults and updating a torque estimation model. In one embodiment, the torque estimation faults are obtained during flame-out of the engine after a disengaging clutch connected between an engine and an electric machine is released. In the following engine operation period, the updated torque estimation module is used for controlling the torque and thus improving the driving feeling and vehicle performance.

The invention provides a system and a method for improving the operation of a hybrid vehicle. In one embodiment, compensation for a power train disconnect-type clutch is provided. The method can reduce torque interference of a power train.

The invention discloses a system and a method for improving operation of a hybrid vehicle. In one embodiment, a disconnect-type clutch of a power train is adjusted to operate in response to the quality of wheels, so that the vehicle can run similarly when the quality of wheels is relatively low and relatively high.

The invention relates to a space optics double-camera continuous imaging uniform-speed swinging movement device, belongs to the device involved in the technical field of space optic imaging, and aims at solving the technical problem of providing the double-camera continuous imaging uniform-speed swinging movement device. According to the technical scheme for solving the problem, the device comprises a swinging drive motor, a worm, a worm wheel, a reversing spring, a reversing cam, a reversing motor, a reversing platform, five rotating shafts, four swinging cams, two swinging springs, two push rods, two cameras and the like. Through the swinging drive motor, the worm wheel and the worm are driven to rotate to bring the swinging cams into rotation, and the swinging cam rotates, and through the push rods, drives the two cameras into constant speed reverse swinging movement. The device has the beneficial effect that through driving the two sets of swinging cams by one motor, uniform-speed and symmetrical swinging imaging of the two cameras with the same speed and in opposite directions is realized, thereby avoiding disturbing moment effect during switching of motor forward and reverse rotation and greatly reducing moment disturbance to a satellite platform.

The invention relates to methods and system for shifting a hybrid vehicle. Systems and methods for shifting a transmission of a hybrid driveline that include a torque converter with a lockup clutch are presented. The systems and methods may adjust a feedforward motor torque command to match application of motor torque to a time that a gear clutch closes so that shifting may be improved and so that driveline torque disturbances may be less noticeable.

The invention discloses a system and a method for improving operation of a hybrid vehicle. In one embodiment, an engine is coupled with a gear box in response to upshifting of the gear box so that the output shaft torque interference of the gear box is reduced.

The invention relates to automatic transmission shift control based on a transmission input shaft torque signal, and a system and a method for minimizing torque disturbances during a shift event for an automatic transmission control actual transmission input shaft torque using a transmission input shaft signal produced by an input shaft torque sensor. The torque sensor provides a signal to a controller that monitors the measured transmission input torque. The torque sensor may be implemented by a strain gauge, a piezoelectric load cell, or a magneto-elastic torque sensor. The system may include a vehicle powertrain having an engine, a transmission coupled to the engine via a torque converter, an input torque sensor coupled to the input shaft of the transmission and a controller configured to control engine torque to cause the measured transmission input shaft torque to achieve a target transmission input shaft torque during the shift event.

Systems and methods for improving hybrid vehicle shifting are presented. Specifically, torque supplied to an input shaft of a transmission may be adjusted during torque and inertia phases of a transmission gear shift. The torque supplied to the transmission input shaft may be increased or decreased based on the shift and the shift phase.

A system and method for controlling electromechanical valves operating in a transmission is presented. According to the method, transmission operation can be improved by heating the valves, at least during some conditions.

The invention aims at providing a novel topological structure of a motor, which generally has the structural characteristics of a radial motor and an axial motor, not only utilizes the electromagnetic space inside the motor to maximum extent, eliminates the bottleneck of the radial motor and realizes the high torque density and the high power density of the rotating motor, but also can provide more space for controlling the motor, so that the disturbance on the torque of the motor is reduced to minimum extent. The technical scheme of the invention is that permanent magnetic steel of the motor is sequentially extended along the circumferential line and is arrayed in a V shape, that is to say, two pairs of V-shaped homopolar permanent steel are arrayed along the circumferential line and adjacent pairs of magnetic steel have opposite polarities; two pairs of homolar permanent magnetic steel groups are arranged in the axial direction, that is to say, at the upper part and the lower part of a rotating shaft; and two pairs of magnetic steel have opposite polarity to the above pairs of homopolar V-shaped permanent steel. A corresponding coil winding pair group is respectively arranged opposite to two pairs of V-shaped magnetic steel.

The method involves releasing a disengaging clutch connected between an engine (10) and an electric motor in a vehicle drive train, in the motor switching off conditions, and estimating a torque after the release of disengaging clutch, based on deviation of one or more engine torque, engine speed and engine braking of the commanded values for release of the clutch. A crankshaft integrated starter / generator (CISG) is arranged to connect the motor to a transmission and the wheels of vehicle drive train mechanically.

The invention relates to methods and system for downshifting a transmission. Systems and methods for operating a driveline of a hybrid vehicle are disclosed. In one example, an engine may enter or stay in one of two cylinder deactivation modes or enter or stay in a combustion mode in response to a request to downshift a transmission while a vehicle in which the engine resides is coasting.

Methods and systems are provided for operating a driveline of a hybrid vehicle that includes an internal combustion engine, a rear drive unit electric machine, an integrated starter / generator, and a transmission are described. In one example, inertia torque compensation is provided to counter inertia torque during a power-on upshift.

The invention discloses a permanent magnet type stepping motor subdivision driving method, which comprises the following steps that 1, according to a stroke, a maximum speed, an acceleration speed and system parameters, a step number N1 and an acceleration stroke D1 required for accelerating the stepping motor to the maximum speed and the upper and lower limits of a driving command clock period of the stepping motor are calculated according to a trapezoidal acceleration and deceleration model; 2, subdivision driving is carried out on the starting stage and the stopping stage of the stepping motor in an operation mode of keeping the same time interval; 3, subdivision driving is conducted in the acceleration stage and the deceleration stage in the operation mode of keeping the same angle interval; 4, the subdivision number of the stepping motor in the acceleration stage is gradually reduced, and the subdivision number of the stepping motor in the deceleration stage is gradually increased. The torque disturbance of the stepping motor to the load system at the starting, accelerating, decelerating and stopping stages can be reduced under the condition that the performance requirement of the motor driving system is relatively low, so that the permanent magnet type stepping motor can be more widely applied to various high-precision system control scenes.

The method involves coupling an engine (10) with a gear box over a powertrain separation clutch in response to a request for upshifting of the gear box during an inertia phase of the upshifting of the gear box, where the separation clutch is positioned in a powertrain between the engine and a torque converter. The engine is started when engine rotation speed reaches a threshold speed. An input torque to the gear box is reduced in response to the request for upshifting the gear box over a targeted coupling of the engine to an input shaft of the gear box. An independent claim is also included for a hybrid vehicle system.

The method involves releasing a disengaging clutch connected between an engine (10) and an electric motor in a vehicle drive train, in the motor switching off conditions, and estimating a torque after the release of disengaging clutch, based on deviation of one or more engine torque, engine speed and engine braking of the commanded values for release of the clutch. A crankshaft integrated starter / generator (CISG) is arranged to connect the motor to a transmission and the wheels of vehicle drive train mechanically.

The present disclosure provides a method for operating a vehicle having a driveline disconnect clutch. A method for operating a vehicle that includes a driveline disconnect clutch is described. In one example, the method adjusts torque of an electric machine in response to a estimated torque capacity of the driveline disconnect clutch. The estimated torque capacity of the driveline disconnect clutch is based on a combined inertia of a dual mass flywheel and the driveline disconnect clutch.

Methods and systems for a two speed accessory transmission for an engine are provided. Methods and systems are provided for engaging and disengaging an electromagnetic clutch of a two-speed accessory transmission of an engine of a vehicle. In one example, a method includes, in response to an electrical demand above a threshold electrical demand, operating an electric machine of the vehicle in motor mode to reduce a speed of a ground gear of a planetary gear set of a two speed accessory transmission (TSAD) of the vehicle; and engaging an electromagnetic clutch in response to the speed of the ground gear reaching a clutch engagement threshold speed.

The invention aims at providing a novel topological structure of a motor, which generally has the structural characteristics of a radial motor and an axial motor, not only utilizes the electromagnetic space inside the motor to maximum extent, eliminates the bottleneck of the radial motor and realizes the high torque density and the high power density of the rotating motor, but also can provide more space for controlling the motor, so that the disturbance on the torque of the motor is reduced to minimum extent. The technical scheme of the invention is that permanent magnetic steel of the motor is sequentially extended along the circumferential line and is arrayed in a V shape, that is to say, two pairs of V-shaped homopolar permanent steel are arrayed along the circumferential line and adjacent pairs of magnetic steel have opposite polarities; two pairs of homolar permanent magnetic steel groups are arranged in the axial direction, that is to say, at the upper part and the lower part of a rotating shaft; and two pairs of magnetic steel have opposite polarity to the above pairs of homopolar V-shaped permanent steel. A corresponding coil winding pair group is respectively arranged opposite to two pairs of V-shaped magnetic steel.

The invention relates to a space optics double-camera continuous imaging uniform-speed swinging movement device, belongs to the device involved in the technical field of space optic imaging, and aims at solving the technical problem of providing the double-camera continuous imaging uniform-speed swinging movement device. According to the technical scheme for solving the problem, the device comprises a swinging drive motor, a worm, a worm wheel, a reversing spring, a reversing cam, a reversing motor, a reversing platform, five rotating shafts, four swinging cams, two swinging springs, two push rods, two cameras and the like. Through the swinging drive motor, the worm wheel and the worm are driven to rotate to bring the swinging cams into rotation, and the swinging cam rotates, and through the push rods, drives the two cameras into constant speed reverse swinging movement. The device has the beneficial effect that through driving the two sets of swinging cams by one motor, uniform-speed and symmetrical swinging imaging of the two cameras with the same speed and in opposite directions is realized, thereby avoiding disturbing moment effect during switching of motor forward and reverse rotation and greatly reducing moment disturbance to a satellite platform.

An inkjet offset printer includes an imaging drum and a transfix roller skewed with respect to and defining a continuously applied or an uninterrupted nip with the imaging drum to reduce torque disturbances and media wrinkling issues. Acoustic and physical disturbances resulting from a sheet of recording media entering and leaving the nip are reduced or eliminated.

The present invention relates to automatic transmission shift control based on a transmission input shaft torque signal, and a system and method for minimizing torque disturbances during a shift event in an automatic transmission by using transmission input shaft torque generated by an input shaft torque sensor signal to control the actual transmission input shaft torque. The torque sensor provides a signal to a controller to monitor measured transmission input torque. The torque sensor can be implemented by strain gauges, piezoelectric load cells or magnetoelastic torque sensors. The system may include a vehicle powertrain having an engine, a transmission coupled to the engine through a torque converter, an input torque sensor coupled to an input shaft of the transmission, configured to control engine torque such that during a shift event A controller causes the measured transmission input shaft torque to achieve a target transmission input shaft torque.

Systems and methods for improving hybrid vehicle operation are disclosed. In one example, the holding force of a vehicle parked on a ramp is adjusted based on the gradient of the ramp.

The method involves adjusting an actuator in response to a speed and torque difference in a dual mass flywheel (DMF), which is positioned in hybrid-vehicle drive train between an engine and a drive line clutch. The dual mass flywheel is a drive train component that is positioned between engine and drive train clutch. The actuator is torque converter clutch, drive train in integrated starter / generator, and clutch drive train. An independent claim is included for hybrid vehicle system.