37results about How to "Improved torque control" patented technology

A vehicle system is disclosed. The system include a engine capable of disabling and enabling at least one cylinder; a motor coupled to said engine capable of absorbing torque and providing torque; and a controller for disabling and enabling said at least one cylinder, and during at least one of disabling and enabling, varying torque of said motor to compensate for transient changes in engine output torque caused by said one of disabling and enabling.

The invention discloses a microcatheter of a tubular structure. The microcatheter comprises a catheter body and a tip end at the far end of the catheter body. The catheter body comprises an inner layer with a hollow tube cavity, a tubular middle layer wrapping the outer side of the inner layer, and a tubular outer layer wrapping the outer side of the middle layer, wherein the middle layer comprises a spring layer and a woven fabric, the woven fabric longitudinally extends on one part of the spring layer, and the portion, not wrapped by the woven fabric, of the spring layer is bent by a certaindegree along the longitudinal axis of the catheter body. The catheter body of the microcatheter is of a multi-layer structure, the woven fabric only wraps the near end of the spring layer, and the portion, not wrapped by the woven fabric, of the spring layer can be bent by a corresponding degree so as to meet the angle between a coronary artery branch and a main branch, so it is ensured that themicrocatheter reaches the lesion of the coronary artery branch.

Systems and methods for improving hybrid vehicle torque control are presented. The system and methods included may estimate driveline torque via springs of a dual mass flywheel. The estimated driveline torque may provide feedback for adjusting operation of a driveline disconnect clutch and / or engine torque.

A vehicle power train system includes an engine, a transmission, and a centrifugal clutch assembly that selectively couples an engine output shaft to a transmission input shaft in response to an operator input. An operator selects a desired vehicle-operating mode by actuating a shift lever or shift switch from a gear selection device. The gear selection device indicates many different operating modes and includes a low-speed maneuvering mode that is selected for low-speed operations such as coupling a truck to a trailer, or positioning a truck and / or trailer in relation to a loading dock area. Once the low-speed maneuvering mode is selected, a control unit controls at least one of engine speed and engine torque to indirectly effect clutch slippage, which results in improved vehicle speed control at low-speed operations.

Systems and methods of driving a compressor are provided. The compressor can be driven by multiple electric motors, which can be controlled by an adjustable speed drive (ASD) to increase efficiency. A torque controller may also be included.

There is provided a electric power steering device which can perform torque control through a simple arithmetic process using a synchronous reluctance motor having a nonlinear current / torque characteristic. A target torque is transmitted from an EPS control unit 41 to a motor control unit 51. The motor control unit 51 calculates a target-current effective value I and a target-current phase θ from the input target torque. Based on the calculated target-current effective value I and target-current phase θ, calculation is changed whether to perform calculation so that the maximum torque (the maximum torque obtainable at the minimum current effective value) can be obtained, or to perform calculation so that the maximum output (the maximum output obtainable at the minimum current effective value) can be obtained in accordance with a duty ratio of an output by a PWM converting unit 57 comprising a three-phase inverter. Next, a three-phase biaxial converting unit 53 calculates a target q-axis current Iq and a target d-axis current Id from the target-current effective value I and the target-current phase θ, and the PWM converting unit 57 performs duty control in order to control the torque of a motor 58.

A headlamp assembly includes a simplified adjusting mechanism for adjusting the aim of a headlamp. The mechanism includes a gear screw that is snap fit into the headlamp housing, a grommet that positioned around the gear screw and snap-fit into the headlamp reflector, and an O-ring to ensure a good seal.

The present invention is a proposal relating to cooperative manipulation of an actuator which actively changes a supercharging pressure and a throttle in the case of application of torque demand control to an internal combustion engine with a supercharger. A control device provided by the present invention separately determines a target air quantity for manipulation of the throttle, and a target air quantity for manipulation of the actuator. In more detail, driver required torque which is included in required torque is converted into an air quantity in accordance with a predetermined conversion rule, and the air quantity which is obtained by the conversion is determined by calculation as a reference target air quantity. The reference target air quantity is used as a target air quantity for throttle manipulation, and is also used as a target air quantity for actuator manipulation at a normal time. When a change occurs to the required torque, and the change cannot be realized under the reference target air quantity, a correction target air quantity capable of realizing the change is determined by calculation, and is used as the target air quantity for throttle manipulation.

The present invention relates to a hydraulic drive which comprises a hydraulic motor having a first hydraulic connector and a second hydraulic connector, wherein the pressure applied at the first hydraulic connector of the hydraulic motor and the pressure applied at the second hydraulic connector of the hydraulic motor are each separately adjustable.

The present invention provides a control method for a dual-clutch transmission of a hybrid electric vehicle, comprising: determining whether the vehicle enters a powerless downshift state through a transmission controller; when the first determining step determines that the vehicle has entered a powerless downshift state , it is determined by the transmission controller whether the transmission including the first input shaft, the second input shaft and the output shaft enters the torque phase; when it is determined that the transmission has entered the torque phase, the calculation is used to compensate the gear ratio based on the completion percentage of the torque phase varying compensation torque for varying regenerative braking force; and, compensating for regenerative torque of the electric motor by applying compensation torque.

Systems and methods for improving hybrid vehicle torque control are presented. The system and methods included may estimate driveline torque via springs of a dual mass flywheel. The estimated driveline torque may provide feedback for adjusting operation of a driveline disconnect clutch and / or engine torque.

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.

A vessel hull stabilization system includes a housing having a rotatable shaft mounted thereto, the shaft configured to connect to a fin such that the fin is located on an outside of the vessel hull and the housing is located on an inside of the vessel hull. A drive system is mounted to the housing and includes a motor and a drive element. The motor is connected to a central shaft of the drive element and an outer element of the drive element is connected to the fin shaft. The drive element includes a plurality of teeth positioned between the outer element and the central shaft such that when the motor rotates the central shaft, the plurality of teeth oscillate in a direction perpendicular to an axis of the central shaft to interact with and rotate the outer element. A controller receives sensor readings to determine control signals to send to the motor(s) to impart rotation of the fin.