92results about How to "Reduced drag torque" patented technology

The invention provides an automatic transmission. Due to reasonable layout, the automatic transmission can be provided with six forward gears and one reverse gear by controlling two brakes and three clutches. Only the two brakes are used by directly fixing a third sun gear on a box body, and therefore, on one hand, the structure of the automatic transmission is more compact, and on the other hand, the impact of the brakes to the box body in a gear shifting process is reduced, and the loaded condition of the box body is improved. Relatively speaking, the amount of the brakes is reduced, the amount of the clutches is increased, and therefore, on one hand, the automatic transmission can be more compact by nesting layout, and on the other hand, the utilization ratio of the clutches can be increased, an idle transfer line is disconnected or shortened, furthermore, the drag torque of an idle planet row is reduced, the churning loss of a belt row is reduced, and the transmission efficiency is increased.

The invention relates to a brake caliper assembly. The brake caliper assembly comprises a brake caliper body, a caliper body support, an inner friction plate, an outer friction plate, a brake disc, return springs fixed to the inner friction plate and the outer friction plate, and sliding springs arranged on the front side and the rear side of the caliper body support. The front side and the rear side of the inner friction plate are slidably connected to the inner sides of the sliding springs. The front side and the rear side of the outer friction plate are slidably connected to the outer sides of the sliding springs. The return springs generate deformation force of which the direction is opposite to the moving direction of the inner friction plate and the outer friction plate when the inner friction plate and the outer friction plate moves in the brake disc clamping direction. According to the brake caliper assembly, when braking is completed, the brake caliper body returns to the initial position, the inner friction plate and the outer friction plate return to the initial positions through the deformation force, and active return of the inner friction plate and the outer friction plate is achieved, so that dragging moment between the brake disc, the inner friction plate and the outer friction plate is lowered, the oil consumption and the CO2 emission of a complete car are lowered, and the atmospheric pollution is reduced.

The invention relates to an automatic transmission which has ten forward gears and one reverse gear through reasonable arrangement of four planetary gear sets and six clutches. Through control of three clutches, power transmission under the gear can be guaranteed; on the premise that the transmission efficiency and the planet wheel rotating speed of the automatic transmission are guaranteed, a first gear ring is directly fixed to a box without using a brake; on one hand, the structure of the automatic transmission is more compact; and on the other hand, impact of the brake on the box in the gear shifting process is reduced, and the loading condition of the box is improved. Comparatively speaking, the brake is not used, the number of the clutches is increased, on one hand, the automatic transmission is more compact through the nested arrangement, and on the other hand, the using rate of the clutches can be increased, the idle shortening transmission line is disconnected, idle planetary gear set dragging torque is reduced, drag torque oil stirring losses are reduced, and the transmission efficiency is improved.

The invention discloses a vehicle braking type brake caliper. The vehicle braking type brake caliper comprises a shell, a piston and a friction plate. The piston can slide in the shell and is used for pushing the friction plate. The piston is internally provided with an adjusting nut, an adjusting threaded rod and a braking tray. The adjusting nut is in threaded connection with the adjusting threaded rod. The braking tray is arranged outside the positioning end of the adjusting threaded rod in a sleeving manner. The braking tray is fixedly connected with the shell. A drive spacer is also arranged in the braking tray and arranged outside the positioning end in a sleeving manner. A drive spring is arranged between the drive spacer and the braking tray in the axial direction. A return spring is arranged between the positioning end and the braking tray in the axial direction. The piston of the vehicle braking type brake caliper achieves mechanical returning through the drive spring and the return spring. After braking is relieved, the dragging moment between the friction plate and a brake disc is reduced. Moreover, the cost is low, and the effect is small.

The invention belongs to the technical field of automobile disc brakes, and particularly relates to a friction plate active return mechanism of a fixed caliper. The friction plate active return mechanism includes two friction plates, a piston is arranged on the back of each friction plate, and two return elastic parts are arranged between the two friction plates; the two return elastic parts are symmetrically arranged at the two ends of the upper parts of the friction plates; the elastic force of an initial compression state of the return elastic parts is greater than the sliding resistance ofthe friction plates; when the friction plates are fully worn, the maximum elastic force of the return elastic parts is less than the sliding resistance of the pistons; and the bottoms of the pistonsare fixedly connected with the friction plates. The active return mechanism is additionally arranged on the basis of the fixed caliper, and the problem that friction plates in the prior art cannot bereturned automatically is solved. Through the active return, the friction plate can be returned faster and more in place, so that the drag torque is reduced, the unexpected wear of a brake disc and the friction plates is reduced, the fuel utilization rate and the service life of the friction plates are improved, and the occurrence rate of jittering is reduced

The invention belongs to the technical field of hybrid power, and relates to a hybrid power driving system and a vehicle. The hybrid power driving system comprises an engine, a first motor, a second motor, a connection and disconnection unit and a transmission, the first motor and the engine are coaxially arranged, and the second motor and the engine are arranged side by side; and the transmissioncomprises a first shaft, a second shaft, a third shaft, a first synchronizer, a second synchronizer, a first motor first gear driving gear, a first motor second gear driving gear, a second motor first gear driving gear, a second motor second gear driving gear, a first gear driven gear, a second gear driven gear, a main reduction driving gear and a main reduction driven gear. According to the hybrid power driving system and the vehicle, when the system shifts gears, the rotating speed of the first motor or the second motor is controlled to be close to the same as the rotating speed of the target gear, then the first synchronizer or the second synchronizer is connected with the target gear, and the impact feeling in the gear shifting process is relieved.

The invention discloses a tractor load reversing clutch device. The device mainly comprises a clutch shaft, a left input gear, a clutch hub, a clutch pressure plate, a clutch friction plate, a release spring, an antifriction block, a clutch piston, a clutch shell and a right input gear. The left input gear, the clutch hub and the clutch piston are sequentially arranged on the left half part of the clutch shaft to form a clutch F, wherein the left input gear and the clutch piston are sleeved by a clutch shaft sleeve; and the clutch hub is fixedly connected with the clutch shaft. The clutch piston, the clutch hub and the right input gear are sequentially arranged on the right half part of the clutch shaft to form a right clutch R, wherein the right input gear and the clutch piston are sleeved by the clutch shaft sleeve; and the clutch hub is fixedly connected with the clutch shaft. The device is a left clutch and a right clutch. Because pressure oil paths are differently controlled, the service life of the clutch is prolonged. Under the action of the release spring, two oblique planes of the clutch shaft and the piston are closely attached, so that the device is automatically sealed and the dragging moment of the clutch is reduced.

The invention relates to the technical field of automobiles, and discloses a starting system and a control method. The starting system comprises an engine, a generator, a control unit, a gas storage tank, a suction pipeline and an electromagnetic valve. The generator can drive the engine to rotate. The engine comprises a cylinder, a piston and a throttle valve, the cylinder is provided with a gas intake manifold, and the throttle valve is arranged on the gas intake manifold. The two ends of the suction pipeline can communicate with the gas storage tank and the gas inlet manifold correspondingly, and the throttle valve and the suction pipeline are sequentially arranged in the flowing direction of gas in the gas inlet manifold. And the electromagnetic valve is arranged on the suction pipeline. In the shutdown process, the throttle valve is closed, the electromagnetic valve is opened, the piston sucks air in the gas storage tank through the gas inlet manifold, and the pressure of the gas storage tank is reduced. In the starting process, the pressure of the gas storage tank is smaller than the maximum allowable pressure of the gas storage tank, the throttle valve is closed, the electromagnetic valve is opened, and the gas storage tank extracts air of the gas inlet manifold, so that the compression reaction force of the piston is reduced, the starting efficiency is improved, and the NVH performance of the engine is improved.

The invention discloses a transfer case device and a vehicle, and belongs to the technical field of transfer cases. The transfer case device comprises an input shaft assembly, a first connecting shaft assembly, an intermediate shaft assembly, a second connecting shaft assembly and an output shaft assembly which are sequentially in transmission connection through gears; the input end of the input shaft assembly is connected with an output shaft of a transmission; the backward output end of the input shaft assembly is connected with a rear drive axle; the forward output end of the output shaft assembly is connected with a front drive axle; a clutch is arranged in the intermediate shaft assembly; and the diameter of a gear in the intermediate shaft assembly is smaller than the diameters of gears in other shaft assemblies. Through adjustment of the speed ratio, the requirement for the torque capacity of the clutch is lowered, the number and the size of the clutch are reduced, the dragging torque is reduced accordingly, the arrangement difficulty and the manufacturing cost of the transfer case on the whole vehicle are lowered, and model selection of an execution motor is facilitated.

The invention relates to the field of automobiles, and discloses an three-planet-row automatic transmission and a vehicle. The transmission comprises an input component, an output component, a first planet row, a second planet row, a third planet row, a first clutch, a second clutch, a third clutch, a first brake, a second brake and a third brake, wherein the input component is fixedly connected with a second sun gear, and the output component is fixedly connected with a third planet carrier; and a second planet carrier is fixedly connected with a third gear ring, a first gear ring is fixedlyconnected with the third planet carrier, and a third sun gear is fixed. According to the three-planet-row automatic transmission, the first brake is closed to brake a first rear sun gear, the second brake is closed to brake a first front sun gear, and the third brake is closed to simultaneously brake the first planet carrier and a second gear ring; and the first rear sun gear is connected with theinput component through the first clutch, the first planet carrier is connected with the second sun gear through the second clutch, and the first planet carrier is connected with the second gear ringthrough the third clutch.

The invention provides a brake clearance estimation method for an electric caliper, which comprises the following steps that S1, an EPB electronic parking brake system is controlled to normally work in a corresponding environment; S2, an operator sends a clamping or releasing control signal to an EPB electronic parking brake system controller through an EPB electronic parking brake system key, ancontroller judges whether the current control requirement is met or not according to received external information, and the control process is achieved; in the control execution process, the estimation model of the motor rotating speed performs estimation in real time, the release gap of the electric calipers is calculated in real time, and accurate control is achieved; and S3, ending, and stopping monitoring are performed. In the motor starting process, the internal resistance of the motor is estimated by utilizing the voltage and current of the motor, so that the current working environmenttemperature of the motor can be identified. An estimation model of a motor is corrected, so that the estimation of electric caliper rotating speed is more accurate.

The invention belongs to the technical field of mechanical braking, and relates to a device for reducing dragging force of calipers, particularly to a spring piece device capable of enabling a friction piece to automatically return. The spring piece device comprises a friction piece assembly, a spring piece, a bracket, a caliper body and a piston, wherein the piston is mounted in a cylinder hole of the caliper body; the bracket is fixedly connected with the caliper body; the spring piece is fixedly mounted on the bracket; the friction piece assembly is mounted on the spring piece; clamping grooves and buckles are arranged on the bracket; the spring piece is connected between the clamping grooves and the buckles in a clamping manner; an automatic return mechanism is arranged on the spring piece; and one end of the automatic return mechanism and one end of the spring piece are in circular arc transition connection. According to the spring piece device, the spring piece is changed into split type, and the automatic return mechanism is added on the spring piece, so that the problems that the spring piece cannot be utilized in common and the friction piece cannot timely return in projects of brake discs with different thicknesses.

The invention relates to the field of cars and discloses a four-planetary-line automatic transmission and a vehicle. The four-planetary-line automatic transmission comprises an input component, an output component, first-to-fourth planetary lines and first-to-sixth clutches. Each planetary line comprises a sun wheel, a gear ring, a planetary frame and a planetary wheel set which are matched. The first gear ring is fixed, the first sun wheel and the second sun wheel are connected, and the second gear ring is connected with the third sun wheel. The third planetary frame is connected with the fourth planetary frame, the input component is connected with the second planetary frame, and the output component is connected with the fourth planetary frame. The first planetary frame is connected with the fourth gear ring through the first clutch, the first planetary frame is connected with the fourth gear ring through the second clutch, and the second gear ring is connected with the fourth gear ring through the third clutch. The second planetary frame is connected with the fourth sun wheel through the fourth clutch, the third sun wheel is connected with the fourth sun wheel through the fifth clutch, and the third gear ring is connected with the fourth sun wheel through the sixth clutch.

The invention relates to the field of automobiles, and discloses a four-planetary-gear-set automatic transmission and a vehicle. The four-planetary-gear-set automatic transmission comprises an input component, an output component, a first planetary gear set, a second planetary gear set, a third planetary gear set, a fourth planetary gear set, a first clutch, a second clutch, a third clutch, a fourth clutch, a fifth clutch and a brake, wherein the first planetary gear set, the second planetary gear set, the third planetary gear set and the fourth planetary gear set are sequentially arranged along the same rotating shaft; the input component is fixedly connected to a second planetary frame and a fourth planetary frame at the same time, and the output component is fixedly connected to a thirdplanetary frame; a first sun gear is fixed, a second sun gear is connected to a fourth sun gear through the first clutch, and a second gear ring is connected to a third gear ring through the second clutch, and the second gear ring is connected to the fourth sun gear through the fifth clutch; and the third clutch is arranged between the third planetary gear set and the fourth planetary gear set, the fourth clutch is arranged between the first planetary gear set and the second planetary gear set, and the fourth clutch is selectively closed so as to transmit power input from the input componentto the first planetary gear set and the second planetary gear set; and the brake is selectively closed so as to brake the third gear ring.

The invention relates to the technical field of automobiles, and discloses a starting system and a control method. The starting system comprises an engine, a generator, a control unit, a gas storage tank, a suction pipeline and an electromagnetic valve. The generator can drive the engine to rotate. The engine comprises a cylinder, a piston and a throttle valve, the cylinder is provided with a gas intake manifold, and the throttle valve is arranged on the gas intake manifold. The two ends of the suction pipeline can communicate with the gas storage tank and the gas inlet manifold correspondingly, and the throttle valve and the suction pipeline are sequentially arranged in the flowing direction of gas in the gas inlet manifold. And the electromagnetic valve is arranged on the suction pipeline. In the shutdown process, the throttle valve is closed, the electromagnetic valve is opened, the piston sucks air in the gas storage tank through the gas inlet manifold, and the pressure of the gas storage tank is reduced. In the starting process, the throttle valve is closed, the electromagnetic valve is opened, and the gas storage tank extracts air of the gas inlet manifold, so that the compression reaction force of the piston is reduced, the dragging torque of the generator is reduced, the starting efficiency is improved, and the NVH performance of the engine is improved.

The invention discloses a coaxial electric drive axle power assembly with a disconnecting mechanism. The assembly comprises a motor, a sun gear, a fixed outer gear ring, a planetary gear, a differential mechanism shell, a differential gear train and a power disconnection mechanism. The sun gear is mounted on a rotor shaft of the motor; the planetary gear is installed on the differential mechanismshell in a self-rotating mode; the planet gear can drive the differential mechanism shell to synchronously rotate by taking a rotating shaft of the sun gear as a center; the sun gear, the planetary gear, the differential mechanism shell and the fixed outer gear ring form a planetary gear train, and power provided by the motor is input into the planetary gear train through the sun gear and output by the differential mechanism shell; and a power input end of the power disconnection mechanism is connected with the differential mechanism shell, a power output end of the power disconnection mechanism is connected with the differential gear train, and the power disconnection mechanism can cut off or be connected with power transmission between the differential mechanism shell and the differential gear train.

The invention relates to a control method and system for optimizing the stroke of a brake pedal and a storage medium. The method comprises the following steps: acquiring a real-time accelerator pedal position reduction value and a real-time vehicle speed value of a vehicle; when it is detected that a driver loosens an accelerator pedal, the real-time accelerator pedal position reduction value reaches the preset pedal position reduction value, and the real-time vehicle speed value is larger than the preset vehicle speed value, the vehicle body electronic stability control system is controlled to conduct active pre-pressurization; when it is detected that the real-time pressure value of active pre-pressurization reaches the preset pressure value, the vehicle body electronic stability control system is controlled to keep the current pressure value; and when it is detected that the driver intends to brake, the vehicle body electronic stability control system controls the vehicle to brake on the basis of the preset pressure value. The low dragging requirements of the wheel side calipers for good brake pedal feeling and power economy under the safety performance of a user can be met at the same time.

An automatic aligning carrier roller set comprises a vertical roller (1), two side carrier rollers (2), a middle carrier roller (4), a rotary beam (5), a rotary seat (6), a lower transverse beam (7) and a supporting wheel frame (9). The rotary beam (5) and the lower transverse beam (7) are formed by hinging bolts through the rotary seat (6), ejection motion stopping mechanisms (10) capable of enabling the carrier rollers (2) to be braked are welded to the two ends of the rotary beam (5), and each ejection motion stopping mechanism (10) comprises a shifting fork (11) hinged to the vertical roller (1), a rotary shaft (12), a swing shaft (13), an outer supporting column (14), a pull pin (15) and a spring (16) arranged at the small end of the pull pin (15) in a sleeved mode. According to the automatic aligning carrier roller set, when a rubber belt deviates, the automatic aligning carrier roller set has enough driving torque to easily push and rotate a carrier roller set frame, the movement of the automatic aligning carrier roller set is sensitive, the automatic deviation correction function is fully achieved, the effect of preventing the operation of a conveying belt from deviating is obvious, and the ejection type braking mechanisms guarantee the product service life.

The invention relates to a torque control method for a hybrid power vehicle. The hybrid power vehicle comprises an engine, a double-clutch gearbox and a motor. The dual-clutch gearbox comprises a first clutch and a second clutch. The method comprises the following steps: whether a current vehicle outputs driving torque through the first clutch to drive the vehicle or not and whether the engine outputs charging torque through the second clutch to drive the motor or not are judged; if so, whether the current vehicle enters an idling sliding state or not and whether the gear of the current vehicle is located at the D gear or the R gear or not are judged; if so, the first clutch is controlled to be converted into a sliding friction state from a joint state; whether the speed of the current vehicle is reduced to zero or not is monitored; and if so, the first clutch is controlled to be converted into the opening state from the sliding friction state. The dragging torque of the clutches can be reduced, so that the oil consumption of the vehicle is reduced.

The invention relates to the technical field of hybrid electric vehicles, in particular to a motor assembly and a hybrid gearbox. The embodiment of the invention provides the motor assembly which is used for the hybrid power gearbox and comprises a motor water jacket and a motor shell, and the motor water jacket is assembled in the motor shell. The motor water jacket is provided with a first oil return hole, and the motor shell is provided with a second oil return hole and an oil return channel communicated with the second oil return hole; the first oil return hole is communicated with the second oil return hole to form an oil path for lubricating oil in the motor shell to flow. The motor assembly can effectively reduce the thermal load of the motor, thereby reducing a drag torque when a motor rotor rotates, and improving the operation efficiency of the motor.

The invention relates to a lubricant guiding device and a transmission device having the same.The lubricant guiding cover (22) includes a surface area (24) constructing at least one segment (28,30,32,34,36,38,40), a transmission device arranged in at least one segment, an outer meshing part (76) of the transmission device (6) in at least one segment and a rotary member (74). A groove (72) in the segment for containing the member (74) has an opening allowing the lubricant to pass through.The outer meshing part reliance on the rotary member (74) is used for constucting the shape and the size of the opening (66).

The invention relates to a method for operating a driver assistance system (28) in a motor vehicle (7), the powertrain of which can be operated in freewheel mode, in which a drive motor (34) is decoupled from the rest of the powertrain by a disconnect clutch (35). According to said method, if the driver assistance system (28) is activated, when the driver stops actuating the accelerator pedal andat least one coasting destination (9) requiring a deceleration of the motor vehicle (7) is determined, an action plan comprising at least one measure for a targeted deceleration of the motor vehicle (7) is determined, taking into account at least one efficiency criterion related to the energy balance of the motor vehicle (7), a time criterion related to the deceleration to the coasting destination(9), and predictive route data describing the route to the coasting destination (9), and said action plan is used for the longitudinal control of the motor vehicle (7), the measures being selected from a group of measures comprising at least operation in freewheel mode and operation in overrun mode. A stopping position (16) is determined as the coasting destination (9) and the action plan is determined in order to decelerate the motor vehicle (7) to a standstill at the stopping position (16).

The invention provides a pneumatic disc brake caliper assembly, and belongs to the technical field of vehicle accessories. By adoption of the pneumatic disc brake caliper assembly, the problems that an existing pneumatic disc brake caliper is poor in strength, inconvenient to machine and the like are solved. The pneumatic disc brake caliper assembly comprises a caliper body, a force-augmentation gap adjustment assembly and a support. The caliper body is of an integrated structure. A thrust support is provided with a cylindrical mounting base. A cover plate is provided with a guide groove, anda sliding bearing is arranged in the guide groove. A support reset spring is located in the mounting base and provides elastic force to make the thrust support tend to be away from the cover plate allthe time. The end, located outside a cavity, of the caliper body is provided with threaded holes which are bilaterally symmetrical. Supporting bases are connected into the two threaded holes. The inner ends of the two supporting bases protrude out of the inner wall of the cavity, and the inner end faces of the two supporting bases are located on the same plane. Positioning holes coaxial with thesupporting bases are formed in the inner ends of the supporting bases. A fixing rotary shaft is fixedly connected with positioning pins inserted into the corresponding positioning holes. The pneumaticdisc brake caliper assembly has the advantages of being good in strength, convenient to machine and position, and the like.

The invention relates to a noise reduction and active return structure of a friction plate. The noise reduction and active return structure mainly comprises a support and the friction plate. Convex blocks at the two ends of the back of the friction plate are embedded into grooves at corresponding positions of the support. A rubber part is arranged on each convex block. The convex blocks are in contact with the grooves through the rubber parts. The rubber parts are in interference fit with the grooves of the support. The friction plate is in contact with a brake disc through piston pushing. Thenoise reduction and active return structure has the beneficial effects that the rubber parts are additionally arranged, the function of active return of the friction plate is achieved, and thereforethe dragging torque of a brake is reduced, and oil consumption of an automobile is reduced; compared with other design, the friction plate has no extra return spring structure, mounting is convenient,and maintenance is easy; and the rubber parts and the support are in interference contact, and the problem of noise of the friction plate is solved.

The invention relates to a test method of a drag torque component of a double clutch automatic gearbox. The test method of the drag torque component of the double clutch automatic gearbox comprises the following steps that a standard test scheme is carried out on a standard double clutch, and a standard torque value is recorded; a friction plate of the standard double clutch is replaced with a special steel plate to obtain a rigid clutch which can transmit power without pressure provided by an oil pump, a plurality of rigid test schemes are carried out, and a rigid torque value group is recorded; a spline test is carried out, specifically, the standard double clutch is replaced with a spline sleeve to transmit power, a plurality of spline sleeve test schemes are carried out specifically, and a spline sleeve torque value group is recorded; and according to the standard torque value, the rigid torque value group and the spline sleeve torque value group, as well as the no-load resistancemoment of an oil pump unit, the drag torque component of the double clutch automatic gearbox is calculated. The test method of the drag torque component of the double clutch automatic gearbox is simple in principle and convenient to operate.

The invention discloses an active returning mechanism for a friction plate. The active returning mechanism for the friction plate comprises a support and the friction plate. The friction plate is fixedly installed in the support. A buckle is fixedly connected to one side of the friction plate. A spring is clamped to the support and matched with the buckle. According to the active returning mechanism for the friction plate, due to the fact that the buckle is connected to the friction plate in a riveted manner and the spring is clamped to the support, the spring returns after braking release, meanwhile the spring hooks the buckle and drives the friction plate to return as well, dragging moment is reduced, and therefore oil consumption of an automobile is reduced.