197 results about "Power split" patented technology

A Level IV fuel-saving robot system for ACE HDTs of the present disclosure focuses on the minimization of actual fuel consumption (L / 100 km) for long-haul freight at first based on an electrical power split device (ePSD) and a mixed hybrid powertrain architecture. A basic model Level I fuel-saving robot realizes a longitudinal L1 automatic driving function through a predictive adaptive cruise (PACC) technology within an Operational Design Domain (ODD) for highways and reduces the actual fuel consumption of an ACE HDT by more than 20% compared with modern diesel HDTs, and the energy-saving and emission-reducing effect of the basic model Level I fuel-saving robot is decoupled from both the technical level of a vehicle engine and the driving level of a driver; an advanced Level IV fuel-saving robot has a L4 automatic driving function within the ODD for highways, operates in a “shadow mode” or “detached mode”, automatically generates a discrepancy report or detachment report, completes the “3R” batch validation for an L4 system on a billion mile scale quickly with high cost effectiveness on the premise of ensuring the traffic safety of existing road users and reduces the total validation expense by more than 65% compared with the modern HDT with internal combustion engine equipped with the L4 system, promoting the early commercialization of the Level IV fuel-saving robot.

A Level IV fuel-saving robot system for heavy-duty trucks (HDT) focuses on the minimization of actual fuel consumption (L / 100 km) for long-haul freight based on an electrical power split device and a mixed hybrid powertrain architecture. The Level IV fuel-saving robot has an L4 autonomous driving function within the Operational Design Domain (ODD) of expressways, operates in a “shadow mode” or “Disengagement Mode,” automatically generates a discrepancy report or detachment report, completes the “3R” (Real Vehicle, Real Road, Real Payload) batch validation for an L4 system on a billion mile scale quickly with high performance to cost ratio under the condition of ensuring the traffic safety of existing road users and reduces the total validation expense by more than 65% compared with the modern HDT with internal combustion engine equipped with the L4 system, promoting the early commercialization of the fuel-saving robot.

The invention provides a power dividing type hybrid power tractor driving system. The power dividing type hybrid power tractor driving system comprises a power source and a power dividing type multi-mode switching mechanical transmission system, wherein the power source is composed of an engine, a P3 motor and a PS motor. The invention further provides a control method of the power split type hybrid power tractor driving system. Through the arrangement of the P3 motor, the PS motor, the power coupling mechanism, the clutch and the brake, energy distribution and efficient work of the engine are achieved. The device is compact in structure and good in dynamic property and economical efficiency, can realize multi-mode driving operation according to complex working conditions of the tractor, and has the advantages of interval stepless speed change, accurate control and the like.

The utility model relates to the technical field of power split hybrid transmissions, in particular to an electromagnetic brake device for locking a generator shaft, which comprises a cylindrical brake sleeve seat capable of movably sleeving an input shaft of an engine, and an electromagnetic coil assembly mounting position, a push disc mounting position and a driven disc mounting position are arranged on the surface of the brake sleeve seat. The electromagnetic coil assembly mounting position is sleeved with an electromagnetic coil assembly, the driven disc mounting position is sleeved with a driven disc, and a push disc is movably arranged on the push disc mounting position; a disc spring is arranged on the side, facing the driven disc, of the push disc, and an iron core in the electromagnetic coil assembly can act on the push disc to enable the push disc to move towards the driven disc and be connected with the driven disc in a clamped mode. The outer end face of the driven disc is provided with an output disc capable of being connected with a generator shaft in a sleeved mode. Compared with other types of locking mechanisms, the electromagnetic braking device has the advantages that the change amount of the vehicle is small, the structure is simple and compact, the control logic is simple, and the control effect is good.

A system including a engine having a low spool and a high spool, a first hybrid electric motor connected to the low spool and a second hybrid electric motor connected to the high spool. An auto-throttle controls an amount of power provided to the engine responsive to at least one aircraft parameter. A power splitting algorithm implemented between the auto-throttle and at least one of the first and second hybrid electric motors determines a power split dividing the total engine power into the power produced by burning fuel and electrical power provided to the at least one of the first and second hybrid electric motors responsive to control signals from the auto-throttle.

Methods and systems for starting an engine of a hybrid vehicle are provided. Systems and methods for operating an internal combustion engine coupled to a power split transmission are described. In one example, the internal combustion engine is started via generator rotation, and a torque output of the generator is adjusted to reduce noise that may be generated by completing gear clearance crossing.

Disclosed is a hybrid power transmission system including an engine, a power split device, a first electric machine, a second electric machine, a power controller, an energy storage module, and a wheel. The power split device is connected to the engine. The first electric machine is connected to the power split device. The second electric machine is connected to the power split device. The power controller is coupled to the first electric machine and the second electric machine. The energy storage module is coupled to the power controller. The wheel is connected to the second electric machine.

The invention discloses a heavy truck power split hybrid system assembly and a control method thereof.The heavy truck power split hybrid system assembly is provided with an engine, an engine input shaft is axially arranged on the engine, and a clutch is connected to the engine input shaft; the planet row is provided with a sun gear, a gear ring and a planet carrier, and an engine input shaft is connected to the planet carrier connected with the planet row; the generator is connected with the sun gear of the planet row; the motor is connected to a gear ring of the planet row, and the output of the gear ring is connected with the gearbox; according to the heavy truck power split hybrid power system assembly and the control method thereof, dual motors, a planet row and a few-gear AMT gearbox are integrated, and according to a power split mode, the power of an engine drives a vehicle through mechanical transmission and electric transmission paths; compared with a traditional commercial vehicle power assembly framework, the new energy power assembly framework has the advantages of being high in comfort, less in power interruption, efficient and oil-saving.

A vehicle mode switching method, apparatus, and system, a vehicle, a computer program, and a readable medium, relating to the technical field of vehicle control. When a vehicle meets a mode switching condition of switching from a power split mode to a direct drive mode, a clutch (102) is kept in an engaged state, and torque adjustment is performed on an engine (101) and a first motor (103), so that when a first synchronizer (105) meets a torque condition, rotation speed adjustment can be performed on the first motor (103), and when the first synchronizer (105) meets a rotation speed condition, the first synchronizer (105) can be controlled to switch from a power split gear to a combined gear, so as to switch the vehicle from the power split mode to the direct drive mode. A gear shifting operation of the first synchronizer (105) is smoothly completed without disengaging or engaging the clutch (102), so that the engine (101) can quickly output torque while the duration of mode switching is shortened, thereby improving the power response performance of the vehicle during mode switching.

A power split hybrid transmission for a vehicle includes an internal combustion engine (ICE), a first electric motor, a second electric motor, a disconnect element and a controller. The ICE drives an output shaft that is rotatably coupled to a planetary carrier of a planetary gear set. The first electric motor is rotatably coupled to a sun gear of the planetary gear set and provides a first rotatable input to a transmission output shaft. The second electric motor is rotatably coupled to a counter gear that provides a second rotatable input to the transmission output shaft. The disconnect element selectively disconnects rotatable motion from the transmission output shaft to drive wheels. The controller determines whether the ICE, the first electric motor and the second electric motor are disconnected from the drive wheels and commands torque to the first and second electric motors to cooperatively rotate the transmission output shaft.

The invention discloses a power split type hybrid power tractor control method, system, equipment and medium, and relates to the technical field of mechanical equipment.The system comprises a continuously variable transmission, a power device, an auxiliary device and a transmission device, and the power device, the auxiliary device and the transmission device are connected with the continuously variable transmission; the continuously variable transmission comprises a planetary gear set, a first motor and a second motor; the power device comprises an internal combustion engine and a first clutch. The auxiliary device comprises a hydraulic pump, a PTO device and a third clutch. The transmission device comprises a second clutch and a transmission shaft. The planetary gear set and the dual-motor design of the continuously variable transmission are combined with the internal combustion engine and the clutch in the power device, so that the engine can always run in a high-efficiency interval, the fuel economy is remarkably improved, and the energy consumption is reduced.

The invention discloses a novel cross-country forklift, which relates to the technical field of hydraulic hybrid power systems of engineering machinery and comprises the following modules: a power module for providing driving power of the whole forklift; the power division module is used for realizing double-flow power division and convergence and comprises an integrated mechanical gear speed change unit and a hydraulic stepless speed change unit; the mechanical transmission module is used for transmitting the power of the mechanical direct drive branch to the drive part; the hydraulic execution module is used for realizing a dynamic characteristic cooperative control technology and matching the flow of a hydraulic system with a mechanical gear speed ratio by establishing a speed-torque-pressure three-parameter coupling model; a composite speed change module; and a control and management module. By adopting double-flow power division and convergence, power division of 70% mechanical energy direct drive and 30% hydraulic energy speed regulation is achieved, and the traditional transmission efficiency bottleneck is effectively broken through. And under the rugged terrain and the variable-load working condition, the energy utilization rate can be increased, fuel consumption is reduced, and the whole machine has higher economical efficiency and durability.

The invention discloses an engine shutdown control method and device for a power split hybrid power system, and the method comprises the steps: determining a shutdown drag curve enabling the longitudinal impact degree of a vehicle to be minimum in the shutdown process of an engine according to a target crankshaft angle, the longitudinal impact degree of the vehicle in the shutdown process of the engine and the rotating speed of the engine; according to the difference value between the rotating speed of the engine in the kth second in the shutdown process and the target rotating speed of the engine in the kth second on the shutdown dragging curve, the output torque of the generator is determined, and the rotating speed of the engine in the kth second is controlled to reach the target rotating speed of the engine in the kth second on the shutdown dragging curve according to the output torque of the generator, the engine crank angle is adjusted to reach the target crank angle according to the generator output torque determined according to the shutdown drag curve, the adverse effect on vehicle driving smoothness caused by crank angle adjustment in the engine shutdown process is effectively reduced, the impact feeling in the engine shutdown process is reduced, and the vehicle driving smoothness is improved.

The invention provides a power split hybrid power transmission mechanism with four fixed transmission ratios, which relates to the technical field of automobile transmissions and comprises an input shaft, an output shaft, a planetary gear assembly and a torque transmission device. The first gear ring, the second planet carrier and the third planet carrier are fixedly connected in sequence to form a first connecting component, and the first sun gear and the second sun gear are fixedly connected to form a second connecting component; the first brake is connected with the third gear ring, the second brake is connected with the second sun gear, and the third brake is connected with the third sun gear. The first clutch is connected with the second gear ring and the third gear ring, the second clutch is connected with the first connecting component and the second connecting component, the input shaft is connected with the first planet carrier, and the output shaft is connected with the third planet carrier. The method has the beneficial effects that the driving requirements of different road conditions are met, all modes are reasonably switched, and the method is suitable for the new energy hybrid power vehicle.

The invention discloses a hybrid power system and a vehicle, and relates to the technical field of automobiles, and the hybrid power system comprises a power output shaft, a planet row structure, a power module, a coupling module and a locking module. Wherein the planet row structure comprises a first planet row and a second planet row, the first planet row and the second planet row are both coaxially arranged with the power output shaft, the first planet row comprises a first gear ring, a first planet carrier and a first sun gear, and the second planet row comprises a second gear ring, a second planet carrier and a second sun gear; according to the technical scheme, the hybrid power system with multiple modes is formed based on the double-planet-row structure and the corresponding coupling module and locking module. Wherein two pure electric modes, four motor direct drive modes, two power dividing modes and four hybrid power modes are mainly included. The two power dividing modes can serve as middle gears of direct-drive gear switching, and the smoothness of the vehicle in the gear shifting process and the smoothness of the vehicle in the starting process can be effectively improved.

The application relates to an energy distribution method, device, controller and storage medium. The method comprises the following steps: acquiring driving modes and operation parameters of a vehicle in each unit time in a preset historical time period, combining a pre-constructed longitudinal dynamics model, a power split dynamics model, a battery model and an engine universal characteristic curve, determining a battery power consumption rate optimal sequence in a pure electric mode, and determining a candidate working point of a hybrid mode satisfying a combination minimum of fuel consumption rate and battery power consumption rate; then, a more balanced target working point is obtained by screening the candidate working point; based on the battery power consumption rate optimal sequence and the multiple target working points, each optimal driving mode and a global optimal control sequence for the preset historical time period are obtained through a dynamic programming algorithm; and then, system-level performance index parameters of the vehicle are optimized based on the optimal driving mode and the global optimal control sequence, so that the optimization of energy distribution in the running process of the vehicle is realized, and the economy of the vehicle is improved.

A power split hybrid power drive system comprises an engine, motors and a power transmission mechanism enabling the engine and the motors to be in transmission connection, the motors comprise the first motor, and the power transmission mechanism comprises a planet row enabling the engine and the first motor to achieve power coupling; the coupler is connected between the planet row and the first motor so as to allow and cut off power transmission between the planet row and the first motor; the differential mechanism is in transmission connection with the gear ring of the planet row and can receive the power transmitted by the gear ring to enable the vehicle to move forwards; and the locking mechanism is connected to the planet row and can lock a gear ring of the planet row. Due to the fact that the gear ring of the planet row is provided with the locking mechanism, the gear ring can be completely locked to the shell in the parking starting mode and the parking charging mode, and therefore the phenomenon that due to the action of fluctuation torque, the gear ring transmits knocking vibration to a gear in the power transmission mechanism, and consequently a vehicle vibrates, towns and the like is avoided.

The utility model relates to the field of vehicle parts, in particular to an electric sub-drive type gear packet and a vehicle, which comprises an input shaft, a synchronizing ring, an electric driving source and a driving unit for moving the synchronizing ring, the electric driving source is connected with the driving unit, and the synchronous ring is rotationally connected to the driving unit; the input shaft comprises a first input shaft body and a second input shaft body used for stretching into the tooth bag shell, and the first input shaft body and the second input shaft body are coaxially arranged. The synchronizing ring simultaneously acts on the first input shaft and the second input shaft, and at the moment, the first input shaft is in power connection with the second input shaft; the synchronizing ring only acts on one of the first input shaft and the second input shaft, and at the moment, power transmission of the first input shaft and the second input shaft is cut off. According to the scheme, switching of power input cutting and power connection transmission of the tooth bag is achieved in an electric mode, and switching of vehicle driving modes is achieved.

The invention discloses a hybrid electric vehicle driving transmission system and a transmission method thereof, and belongs to the technical field of automobile transmission. An engine is connected with an input shaft, a C2 clutch, a C1 clutch and a driving gear are arranged outside the input shaft, the C2 clutch is connected with a planet carrier, the planet carrier is provided with two planet wheels, the two planet wheels are both in meshed connection with a sun wheel and are in meshed linkage with a gear ring, and the gear ring is fixedly connected with the C2 clutch and the C1 clutch. The sun gear is connected with a rotor shaft of the second motor, a brake B1 is arranged outside the rotor shaft of the second motor, and the brake B1 is connected with the shell; the C1 clutch is connected with the driving gear, a rotor shaft of the first motor is connected with the motor gear, and the driving gear and the motor gear are both in meshed connection with the output unit. A multi-mode power system of pure electricity, series connection and parallel connection double gears, series-parallel power dividing, parking power generation and the like is constructed, and all-working-condition oil consumption optimization is achieved in cooperation with the planet row power dividing characteristic and motor speed regulation compensation.

The invention provides a vehicle control method and device, a controller and a vehicle. The method comprises the steps that when it is monitored that a vehicle is in a power split driving mode and in a driving working condition, a rear axle torque limit value can be determined according to current driving data of the vehicle; and then the larger value in the rear axle torque demand value and the rear axle torque limit value is selected as the target rear axle torque, so that the rear axle motor is limited to output the overlarge negative torque, the situation that the vehicle is unstable due to the fact that the front axle outputs the positive torque and the rear axle outputs the overlarge negative torque is avoided, and safe and stable operation of the vehicle is guaranteed.

The invention provides a gear selection method, device and equipment for a hybrid electric vehicle and a computer medium. The method comprises the steps that torque required by a driver and allowable discharging power of a battery are determined; obtaining the current rotating speed of the driving motor, and determining a high-efficiency working interval of the driving motor in the efficiency characteristics of the driving motor based on the equipower line corresponding to the allowable discharge power of the battery and the current rotating speed of the driving motor; determining a power boundary required to be provided by an engine based on the torque required by the driver and the torque upper and lower limits of the efficient working interval of the driving motor; determining an engine feasible region in the working characteristics of the engine by combining the power boundary; executing an equivalent fuel consumption minimum algorithm in the feasible region of the engine and the efficient working region of the driving motor, and determining optimal working points of the engine and the driving motor; and the wheel end rotating speed is obtained, and the synchronizer gear of the power dividing mechanism is controlled according to the relation between the engine rotating speed corresponding to the optimal working point and the wheel end rotating speed.

The present invention relates to an ultra-compact, power-splitting, detachable wind turbine main drive system, comprising a primary planetary gear train, a secondary planetary gear train, a supporting main structure, a generator, and a hub. The hub is supported on the supporting main structure via a main shaft bearing, the right side of the hub connected to a primary planetary carrier, which is connected to an input system. The primary planetary carrier is floatingly connected to a secondary ring gear via a floating spline sleeve, and the secondary ring gear is disposed on the secondary planetary carrier. The hub simultaneously drives the primary planetary carrier and the secondary ring gear, with the primary planetary carrier rotating the primary planetary gears, and the secondary ring gear rotating the secondary planetary gears, thereby achieving power splitting. The present invention significantly reduces the overall size of the wind turbine transmission chain, achieves high power density, is compact in structure, lightweight, and low in cost, and each level of components can be independently detached, making maintenance and replacement easy and cost-effective.

Modular drive arrangement for driving a drive axle of a motor vehicle, comprising: an input shaft (10), a power split unit (1) for driving a first output shaft (7) and a second output shaft (8), wherein the power split unit has a drive (4) for transmitting rotary motion and a module interface, a first transmission module (2), wherein the first transmission module has a first input part (20) connectable to the input shaft (10), and wherein the first transmission module has an output part (5) connectable to the drive (4), a second transmission module (3), wherein the second transmission module has a second input part (30) connectable to the input shaft (10), and wherein the second transmission module has an output part (5) connectable to the drive (4), wherein either the first transmission module (2) is connected to the module interface,or the second translation module (3) is connected to the module interface, wherein the first translation module (2) has a fixed translation ratio between the input shaft (10) and the drive (4), wherein the second translation module (3) has a variable translation ratio between the input shaft (10) and the drive (4), and wherein the first translation module (2) and the second translation module (3) are interchangeable.

The scheme relates to the field of rail transit locomotive braking, and discloses a rail transit mechanical, electrical and hydraulic three-stage combined braking control method and a control system. The control method steps are as follows: a power split motor train unit including two or more than two power sources of internal combustion and electricity is used, one or several brakes of mechanical braking, electrical braking and hydraulic braking are selected according to the opening degree of the brake handle on the motor train unit, and the selected brake is used for braking. The control system includes a hydraulic retarder, a traction motor, a traction inverter, a mechanical transmission box, a clutch, an axle gear box, mechanical brake shoes, an energy storage device and a controller. Through the mechanical, electrical and hydraulic three-stage combined braking mode, the risk of braking failure caused by mechanical braking wear is further reduced, and the reliability and comfort of the braking system are improved.

The present application belongs to the technical field of vehicle gear shifting control, and specifically relates to a two-gear power split hybrid system gear shifting control strategy based on battery safety constraints, and specifically comprises the following steps: (1) introducing a power battery SOA boundary and an engine external characteristic to perform upper-layer target speed adaptive planning, and dynamically solving an engine target speed meeting a charge-discharge boundary; (2) based on the frequency domain response difference characteristics of multiple power sources, performing lower-layer active inertia damping control, using generator output reverse torque to suppress engine angular acceleration fluctuation, and realizing virtual decoupling of inertial torque; (3) based on the optimal matching principle of torque change rate, performing dynamic torque collaborative control, and inversely calculating and using motor action to compensate for torque loss; (4) performing multi-stage coordinated gear shifting according to the time sequence logic of a finite state machine. While effectively avoiding battery overcurrent risk and eliminating power interruption, the present application greatly reduces the longitudinal impact degree in the gear shifting process, and significantly improves the transient driving quality and smoothness of the vehicle.

The utility model relates to the technical field of vehicle driving devices, in particular to a novel hybrid power assembly driving device, which is characterized in that an engine device is fixedly connected with the input end of a torsion damper device, the output end of the torsion damper device is fixedly connected with a planet carrier component of a power dividing device, and a clutch device is arranged on a sun gear of the power dividing device; the clutch device is connected with a generator device; a gear ring output shaft of the power dividing device and a driving motor input shaft of the driving motor device are connected with a gear mechanism device; a main reduction driven gear and an output device are connected to the differential device, the main reduction driven gear is meshed with the gear mechanism device, and gear shifting adjustment is conducted on the gear mechanism device through the synchronizer power gear shifting device. The synchronizer power gear shifting device is located at the engine end so that gear shifting smoothness can be better achieved, and abrasion can be reduced due to the fact that the synchronizer power gear shifting device is arranged on the middle shaft; the whole structure is novel, the layout is compact, the occupied space is small, and the whole vehicle carrying performance is higher.

The present application relates to a kind of power split shaft vibration test methods, devices and equipment based on response control, it is related to aerospace field.The technical scheme will power split shaft and tool be installed in vibration table, different gradient tightening torque and multistage vibration load are applied, response value is collected to construct load and response curve family;When given input load and required response, traverse curve family with response as ordinate, select adjacent abscissa and corresponding curve, and the target tightening torque is calculated by linear interpolation;Load is applied after fastening with target torque, if the measured response error is out of range, based on measured response iterative calculation, until error is up to standard to determine final torque.In this case, the response on shaft can be accurately adjusted, and the response can be controlled within a reasonable range, which can avoid under-test and effectively reduce over-test phenomenon, ensure that the power split shaft is reasonably evaluated by vibration load, expose possible problems in design in advance, shorten development cycle and reduce research and development costs.

Provided is a vehicle drive device capable of suppressing the occurrence of shock when switching between a first power split mode and a second power split mode. A mode switching process for switching the driving mode between the first power division mode and the second power division mode is executed when the rotation speed of the second motor is within a predetermined rotation speed range of zero or near zero. Thus, in the first power division mode, when the rotation speed of the second motor is zero or near zero, it is difficult to generate power transfer between the second motor and the third motor. Furthermore, in the second power division mode, when the rotational speed of the second motor is zero or near zero, it is difficult to generate power transfer between the first motor and the second motor. By executing the mode switching process when the rotational speed of the second electric motor is zero or near zero, the amount of change in torque of each electric motor can be reduced, and a change in driving force of the vehicle can be suppressed.

The gearbox has a high-speed shaft (1) with a pinion (2), a low-speed shaft (6) with a low-speed gear (7), and at least two power split branches including a power split shaft (3). A support disc (9) is located within the gearbox, and this support disc is connected to shafts (1), (6) and / or pinion (2) and / or low-speed gear (7) via flexible members (10) or joints (11) to tilt the axis of the support disc (9). A sliding connection is formed between the support disc (9) and the power split branch shafts (3), and each of the power split branch shafts (3) is provided with a first sliding fit to capture axial forces, and the outer circumference of the support disc (9) is provided with a corresponding second sliding fit. When one branch is loaded with a greater load, the axial force generated by the gears increases. Such a force causes the branch receiving the greater load to shift axially, thereby tilting the support disc (9). As a result, the branch with the lower load is simultaneously drawn in the direction that meshes more closely, and consequently, the load on that branch increases.