30results about How to "Increase the maximum torque" patented technology

The invention discloses a three-phase motor stator structure and motor. The stator comprises an annular stator core and stator windings arranged on the stator core; The inner wall of the stator core is provided with a plurality of slots; the stator windings comprise two winding elements connected in a parallel mode, and each winding element comprises three branches windings connected in a star-shaped mode; each branch winding comprises an outgoing line, a plurality of conducting bars and a neutral line, which are connected in order; the conducting bars are formed by two legs and a transition part connected between the two legs in an integrated mode, and the transition part comprises two parallel straight arms part and a u-shape part connected between the straight arms part in an integrated mode; each branch winding is provided with six circles of windings along the circumferential direction of the stator core, and each circle of winding forms three turns of active winding. Optimizing the stator structure makes it low of the motor no-loads opposite potential harmonic and the electromagnetic noise, and insures the torque of the motor large enough under the condition of the maximum torque and the maximum velocity, and it is suitable for drive motor of electric vehicle.

The invention provides a stator for an axial clearance type motor and the axial clearance type motor. Stator teeth stator windings are symmetrically arranged on the two end faces of the stator to support the axial clearance type motor to adopt a dual-rotor mode which can make the stress of a rotating shaft balanced, so that improvement in the bearable maximum torque and rotating speed of the axial clearance type motor is facilitated. In addition, a stator slot formed on the stator replaces a collector ring and a cooling shell, so that the structure of the axial clearance type motor can be simplified. Moreover, clearance slots of the stator are equal in width along a radial direction, so that the utilization of air clearances is improved; and chambers are formed at the end part edges of the stator teeth of the stator, so that the dispersion of lines of magnetic force can be suppressed. Therefore, the specific power of the axial clearance type motor can be improved.

The invention provides a hybrid supercharging system, a control method of the hybrid supercharging system, and a vehicle. The system comprises an electronic supercharger, an exhaust gas turbosupercharger and a controller, wherein the controller is separately connected with the electronic supercharger and the exhaust gas turbosupercharger, and is used for obtaining the accelerator pedal change rate of the vehicle; when the accelerator pedal change rate is larger than a first preset change rate and the allowed start-up conditions of the electronic supercharger are met, the electronic supercharger is controlled by the controller to start up, and an engine is supercharged at the same time by the electronic supercharger and the exhaust gas turbosupercharger; and when the accelerator pedal change rate is smaller than the first preset change rate, the electronic supercharger is controlled by the controller to shut down, and the engine is supercharged by the exhaust gas turbosupercharger. Through the adoption of the hybrid supercharging system disclosed by the invention, the coupling problem of the electronic supercharger and the exhaust gas turbosupercharger is solved, and the maximum torque and the acceleration response of the engine are increased, so that the acceleration property of the whole vehicle is improved.

The invention relates to large-discharge electric submerged screw pump oil extracting equipment. Compared with the traditional electric submerged screw pump oil extracting equipment which belongs to a large-discharge series and also mainly comprises an underground motor, an underground rotating type mechanical drive device, an underground screw pump, and the like, the large-discharge electric submerged screw pump oil extracting equipment has the technical scheme key that the underground screw pump is connected with an underground multistage motor by the underground rotating type mechanical drive device; the screw pump is rigidly fixed on the sleeve pipe wall of an oil well by adopting the underground multistage motor with high torque output and vibration resistance, a drum-gear coupling with high torque output, vibration resistance and an opening type structure, a series combined stopping type bear joint and an underground rotating type mechanical drive device of a compensating type lubricating oil tank through an anchoring device; the problem of oil leakage of an oil pipe of a large-gradient well or a horizontal well is solved by adopting a hydraulic type oil pipe oil drainer; and the large discharge of the electric submerged screw pump is realized by the technical measures, and thus the invention can be used for the oil well with large-discharge (more than 200m<3>/d) on the electric submerged screw pump.

The invention relates to a method for controlling a friction clutch (3) in a vehicular drive line further provided with an engine (1), a friction-type continuously variable transmission (2) and a driven wheel (5), which method comprises the steps of controlling a slip value (Cs) of the clutch (3), of detecting the occurrence of a torque jolt (block A) and, if no such torque jolt is detected, of performing the clutch slip (Cs) control closed-loop (block B), or, if a torque jolt is detected, of performing the clutch slip (Cs) control open-loop (block C).

The invention relates to a one-way clutch retainer, which comprises two circular flanged disks (1,2; 11,12); the flanged disks are connected with each other and arranged with an axial gap; action bodies (4; 14) are disposed there between; the action bodies can be arranged in the retainer by a swinging way and is pre-tightened on the joint direction by a spiral torsion spring; the action bodies perform the acting swinging motion on the separation direction against the spring under the effect of centrifugal force; at least two guiding surfaces (5c,5d; 15) are arranged for each action body in its axial extension; a guiding surface is joined on the regions on the end peripheries of the action bodies, can guide the action body at least on the circumferential direction of the flanged disk and has a fracture on at least the radial inner side; the action body is passed throught the fracture and is extended towards an action surface on the radial inner side; the axial length of the action surface on the radial inner side of the action body is equal to the total length of the action body. According to the invention, The guiding surfaces are each formed integrally by recesses on opposite end faces of the flanged disks.

The invention discloses a double-VGT two-stage supercharged diesel engine variable altitude simulation test system and method. The double-VGT two-stage adjustable supercharged diesel engine variable altitude simulation test system comprises an environment pressure simulation system, an engine power measuring system, a combustion analysis system, a calibration system, a high-pressure stage VGT, namely, an HVGT, a low-pressure stage VGT, namely, an LVGT, a diesel engine control unit ECU and a supercharger control unit TCU, the ECU controls the oil injection quantity, the oil injection advance angle and the common rail pressure in real time, and the TCU controls the blade opening degree of the high-pressure stage VGT and the blade opening degree of the low-pressure stage VGT. According to the method, under the conditions of variable altitudes and variable working conditions, based on the optimal MAP of oil injection parameters and pressurization control parameters obtained through coupling optimization of a neural network and a genetic algorithm, an eight-factor and three-level orthogonal test is designed, and a two-stage pressurization and oil injection parameter variable-altitude collaborative calibration test is carried out. Oil-gas-chamber optimal matching of a 0-5500 m diesel engine is achieved, and the variable altitude and variable working condition dynamic property and economical efficiency of the diesel engine are greatly improved.

The invention discloses an excitation control method of a wide plate roller type straightening machine, and relates to the technical field of aluminum alloy plate straightening. The invention aims torealize the straightening of a wide plate. The excitation control method of the wide plate roller type straightening machine comprises the following steps of: collecting an actual rotating speed v ofa bottom straightening roller driving motor in the straightening machine, obtaining an adjusting magnetic flux phi1 according to the actual rotating speed v and a given rotating speed v1, obtaining anadjusting speed v2 according to the adjusting magnetic flux phi1, obtaining an adjusting torque according to the adjusting speed v2 and a given torque T, feeding back (1.4-1.5) phi to the straightening roller driving motor as an excitation control signal when T1 is greater than or equal to 1.4T, and feeding back phi to the straightening roller driving motor as an excitation control signal when T1is less than T. The excitation control method is suitable for the straightening of the wide plate.

The electric machine (1) has a drive shaft (2) on which a rotor (3) and a connector (4) are arranged. A partial actuated torque transmission connection between the rotor and the connector is formed in drive shaft. An attachment element (6) is provided for axially defining the connector into the direction turned away from the rotor. The drive shaft and the connector are made in active connection with a connector (18). An external teeth (19) of connector is engaged with an internal gear (10). An independent claim is included for assembly method of electric machine.

The invention provides a motor controller which can suppress the shortening of the power cycle life and the thermal cycle life of electrical semiconductor elements, and increase the maximum current of the motor controller and the maximum torque of the motor. The motor controller comprises a motor and a controller part which is used for controlling the motor. The controller part increases the maximum absolute value of the motor torque with the increasing of velocity absolute value when the absolute value of the motor velocity is lower than a specified value under instaneous driving of the motor.

Timepiece including: a spring housed in said barrel, an electric power generator coupled to said barrel, a rectifier circuit connected to said generator, and a regulator circuit supplied by the direct voltage from the rectifier circuit and intended to control the rotational speed of the generator. The rectifier circuit comprises: a voltage doubler rectifier connected to the output of the generator, a first capacitor and a first diode connected in series between said first output terminal of the rectifier and the first output terminal of the generator, a second capacitor and a second diode connected in series between the first output terminal of the generator and the second output terminal of the rectifier.

The invention discloses a permanent magnet synchronous motor rotor used for driving a new energy automobile. Permanent magnet magnetic steel (3) is placed in linear permanent magnet magnetic steel grooves (4) to compose V-shaped magnetic steel of a pole of a rotor (2); magnetism-isolating magnetic bridges (5) are arranged among the permanent magnet magnetic steel (3); big grooves (1) are closed triangular grooves; small grooves (2) are open triangular grooves; both the big grooves (1) and the small grooves (2) are in the shapes of isosceles triangles and 14-28 big grooves and 14-28 small grooves are provided; the big grooves (1) and the small grooves (2) are arranged at intervals and are uniformly distributed in the periphery of the rotor; the bisector of the top angle of each isosceles triangle shaped small groove (2) is overlapped with the radius of the rotor (2), and pointing direction of each top angle is opposite to the center (O) of the rotor; the bisector of the top angle of each isosceles triangle shaped big groove (1) is overlapped with the radius of the rotor (2), and each top angle points towards the center (O) of the rotor; and the polarity of the permanent magnet magnetic steel (3) is opposite to that of each permanent magnet magnetic steel groove (4).

The invention discloses a limit shock absorber structure which comprises a fixed cylinder, a spring and a fixed disc. The fixed cylinder is composed of an inner cylinder body and an outer cavity body,two ends of the bottom and the top of the fixed cylinder are respectively provided with a force column through a reserved groove, the force columns are positioned in the inner cylinder body, one endof each force column is connected with a movable plug, the inner side of each movable plug is provided with a buffer block, and a hollow cavity is arranged between the buffer blocks, top columns are arranged at the bottom and the top of the hollow cavity through sleeve holes, one end of each top column is connected with the corresponding buffer block, the other end of each top column is positionedin the hollow cavity and connected with a pressing plate, two ends of the hollow cavity are provided with infusion tubes, one end of each infusion tube is connected with the outer cavity, a fixing block is arranged outside the fixed cylinder, and a reinforcing layer is arranged on the outer surface layer of the fixed cylinder. According to the limit shock absorber structure, bidirectional shock absorption can be conveniently carried out, the length can be conveniently reduced, the feedback time can be conveniently adjusted, the integral strength is high, and the limit shock absorber structureis suitable for being widely popularized and used.

A motor has windings and a control device, which applies appropriately one-way current to each of the windings. Two full-pitch windings, which are located adjacently to both ends of an A-phase stator magnetic pole, and driving transistors are connected in series to each other to supply an A-phase current component, thereby exciting an A-phase magnetic flux component passing through the A-phase stator magnetic pole, resulting in generation of torque. This excitation is also applied to other phases. The respective stator magnetic poles can be excited selectively, and voltages across both ends of the serially connected windings become a voltage for corresponding magnetic flux components which should be provided by the windings, thus providing a more simplified motor structure and higher motor performance. The windings and transistors can be used commonly in two phases, providing an improved usage rate, thus making the motor more compact in size and reducing manufacturing cost.