39results about How to "Taking into account the power" patented technology

The invention relates to an electro-hydraulic automatic shift transmission case control device and method in engineering machinery. The device comprises an engine speed sensor, a torque converter turbine speed sensor, an engine throttle opening sensor, a vehicle speed sensor, a vehicle master controller, an engine throttle execution mechanism, an automatic shift transmission case and an electronic controller. The engine speed sensor, the torque converter turbine speed sensor, the engine throttle opening sensor and the vehicle speed sensor input signals to the electronic controller. The electronic controller is communicated with the vehicle master controller. The vehicle master controller inputs control signals to the engine throttle execution mechanism. The electronic controller inputs the control signals to the automatic shift transmission case. The invention uses different shift modes according to the intention of a driver, realizes the transmission shift of hydraulic engineering machinery in proper time, and ensures the economical efficiency, power efficiency and practicability of the vehicle. During the shifting process, the invention can ensure good gear shifting performance by controlling the engine and improve the comfort of passengers.

The invention relates to a hydraulic mechanical transmission engineering machine automatic gear shifting device and a control method, comprising an electrohydraulic gear shifting device, a microcomputer controller, an engine rotation speed sensor, and a gearbox output rotation speed sensor, a gear shifting handle switch, a gear shifting mode selection switch, an electric control gun position potentiometer and an automatic mode direction switch; the engine rotation speed sensor, the gearbox output rotation speed sensor, the gear shifting handle, the gear shifting mode selection switch, the electric control gun position potentiometer and the automatic mode direction switch input signals to an input port of the microcomputer controller which controls the signals to be output to a gearbox control module through an output port. The invention adopts two gear shift combination, has economics, power and practicability, and reaches the object of saving energy; the automatic gear shifting leads the engineering machine to improve the working efficiency, save the working time, reduce the labor intensity of the drivers, and be suitable for different working conditions.

The invention discloses a preparation method for a quasi-vertical-structured GaN-based schottky diode, and belongs to the technical field of a semiconductor device. A highly-doped N-type GaN layer is grown on a growth substrate in an epitaxial way; a highly-doped N+ GaN layer is grown on the N-type GaN layer in an epitaxial way; ohmic contact is formed on the N+ GaN layer; and schottky contact is formed on an N- layer, and schottky contact is led to a positive electrode through an air bridge. By virtue of the preparation method, the series resistance of the device can be lowered, working frequency can be improved, and the problem of current crowding can be solved.

The invention discloses an automatic starting control method of a hybrid electric vehicle. The automatic starting control method comprises the following steps: S1, when t is greater than t1 and less than t2, a control system does not receive a brake or accelerator signal, the vehicle is driven by a motor separately; S2, when t is equal to or greater than t2 and equal to or less than t3, a driver steps on the accelerator, the control system controls a clutch to a peristalsis point from the opening state after receiving the accelerator stepping signal, the torque Tc(t) of the clutch is enlargedto pull and start an engine, at the same time, the control system controls the output torque Tm(t) of the motor to increase, the actual torque is Ts (t) and keeps unchanged, and the control system adjusts the revolving speed of the engine to the starting revolving speed vq; and S3, when t is equal to or greater than t3 and equal to or less than t4, the clutch is closed from the peristalsis point,the actual torque Ts(t) of the vehicle keeps unchanged, the control system simultaneously gives out a command for adjusting the revolving speed of the engine to enable the revolving speed growth rateof the engine to be consistent with the growth rate of the vehicle speed. With adoption of the automatic starting control method, the automatic starting control of the engine of the hybrid electric vehicle is finished, and the starting process is steady and fast.

The invention relates to a hybrid electric vehicle transmission device. The hybrid electric vehicle transmission device comprises a planetary gear coupling mechanism, wherein the planetary gear coupling mechanism comprises a single-planetary row and a double-planetary row, the single-planetary row comprises a first sun wheel, a first planet gear, a first planet carrier and a first gear ring, and the double-planetary row comprises a second sun wheel, an inner planet wheel, an outer planet wheel, a second planet carrier and a second gear ring. An input shaft is used as the first transmission shaft, the two sun wheels are connected with each other and then connected with a rotor shaft of a second motor, and a second transmission shaft is constituted. The two planet carriers are connected to constitute a third transmission shaft, the first gear ring is connected with a rotor shaft of a first motor to constitute a fourth transmission shaft, and the second gear ring constitute an output shaft. The input shaft is connected to the output end of an engine through a torsional shock absorber. The first motor is connected to one end of a first brake, and a transmission housing is connected tothe other end of the first brake. The second motor is connected to one end of a second brake, and the transmission housing is connected to the other end of the second brake. By using the embodiments of the hybrid electric vehicle transmission device, the device structure can be optimized, and the transmission efficiency is improved.

A longitudinal coaxial gear-shiftable electrically driven bridge reduction gearbox assembly comprises a motor, a first shaft assembly (1), an intermediate shaft assembly (2), a main conical shaft assembly (3) and a differential mechanism assembly (4), wherein the intermediate shaft assembly (2) comprises an intermediate shaft (15), an intermediate shaft normally engaged gear (12) and an intermediate shaft low-speed gear (13); the main conical shaft assembly (3) comprises a driving bevel gear (10), a main conical shaft low-speed gear (14) and a fixing gear holder (9); the motor is connected with the first shaft assembly (1); the first shaft assembly (1) is engaged with the intermediate shaft normally engaged gear (12); the intermediate shaft low-speed gear (13) is engaged with the main conical shaft low-speed gear (14); the main conical shaft assembly (3) is connected with the first shaft assembly (1) through a sliding engaging sleeve (8); and the driving bevel gear (10) is engaged witha driven bevel gear (11) of the differential mechanism assembly (4). Small gears of AMT are realized, and the system cost is reduced while dynamic performance is considered.

The invention relates to a method and a device for controlling the abnormal combustion of a hydrogen-fueled engine. The method of the invention for controlling the abnormal combustion of the hydrogen-fueled engine comprises the following steps: judging whether the hydrogen-fueled engine is pre-ignited and tempered or not according to acquired pre-ignition and tempering signals; when the hydrogen-fueled engine is pre-ignited, adopting a mode of regulating ignition timing to suppress the pre-ignition; and when the hydrogen-fueled engine is tempered or is pre-ignited and tempered, adopting the mode of regulating the ignition timing or the mode of regulating the ignition timing and the working water jet capacity of an intake pipe synchronously and in steps respectively according to different tempering strengths to suppress the tempering. Through the method, the hydrogen-fueled engine primarily ensures high economical efficiency when working under the working condition of low and moderate load and primarily ensures dynamic performance indexes when working under the working condition of large full-load; and the method has the advantages of effectively suppressing the abnormal combustion, such as the pre-ignition, the tempering and the like, fully developing the maximal advantages of the ignition timing and the water jet of the intake pipe and simultaneously taking the performance ofthe engine into account.

The invention discloses an advanced commercial vehicle gear shifting reminding control method, belongs to the technical field of gear shifting control. The advanced commercial vehicle gear shifting reminding control method mainly solves the technical problem that an existing gear shifting reminding method frequently reminds of gear increase and decrease, and the method comprises the following steps that S1, when the vehicle speed is smaller than a threshold value, the rotating speed of an engine and the maximum torque of the engine after gear increasing are calculated, and if the rotating speed of the engine and the maximum torque of the engine meet requirements, a driver is reminded to conduct gear increase; and S2, when the vehicle speed is not smaller than the threshold value, the rotating speed of the engine, the maximum torque of the engine and the specific fuel consumption at each gear are calculated, and a first small-specific-fuel-consumption gear, a second small-specific-fuel-consumption gear and a third small-specific-fuel-consumption gear are obtained, wherein an optimal gear is selected from the first small-specific-fuel-consumption gear, the second small-specific-fuel-consumption gear and the third small-specific-fuel-consumption gear, and the driver is reminded to switch to the optimal gear. The invention also discloses a control system for realizing the method. The advanced commercial vehicle gear shifting reminding control method and system can give consideration to power performance and fuel economy, and frequent reminding of gear increase and decrease is avoided.

The invention discloses a hybrid power system and a control method thereof. The hybrid power system comprises a first motor, a second motor, a battery pack, a first planet row, a second planet row, a first gear pair, a second gear pair, a first input shaft, a second input shaft, a third input shaft, a first engaging sleeve, a second engaging sleeve and the like. By sequentially connecting and controlling combination and withdrawing of the first engaging sleeve and the second engaging sleeve, the hybrid power system has various working modes which include a pure electric driving mode, two parallel driving modes, a series-parallel driving mode and an energy recycling mode, the defects that the working efficiency of an engine is low in a pure torque coupling mode, and the power performance is insufficient in the pure rotation speed coupling mode are overcome, and the economical efficiency of fuel and the power performance are ensured at the same time. According to the hybrid power system, the engaging sleeves which are simple in structure are adopted, compared with adoption of a friction clutch, the hybrid power system is more compact in overall structure, meanwhile slide-friction energy loss generated by the friction clutch can be avoided, and the overall efficiency of the system can be improved.

The invention relates to a power driving device of double motors and a torque distribution control method thereof. Motor working points are adjusted according to the power needed by a vehicle, energymanagement is reasonably executed, meanwhile single-motor braking energy recovery and double-more braking energy recovery can be achieved under different braking power, and the economic efficiency ofthe vehicle is improved. The minimum power evaluation index is proposed according to double-motor coupling characteristics to serve as an evaluation criterion of vehicle mode switching, and the two motors work at the best working points according to vehicle-needed power adjusting working modes and give consideration to the power and economic efficiency of the vehicle. The corresponding process isaccelerated in the whole vehicle control process, the corresponding powers in all modes and the rotation speeds and torques of the motors are calculated according to the characteristics of the main motor and the auxiliary motor, the data is stored in a storage unit in a form way, the corresponding working modes are quickly identified in a table lookup way in actual operation of the vehicle, and the response speed of the whole vehicle is improved.

The invention relates to a tempering prevention and abnormal combustion restraining method of a hydrogen fuel combustion engine, a prevention method uses at least two ways of hydrogen spraying devices to spray hydrogen, and the hydrogen spraying devices adopt a sectional operating mode to spray hydrogen; when the hydrogen spraying devices spray hydrogen at the early stage, an intake valve is opened to delay some time to spray n; and the terminal time of the hydrogen spraying is fixed on the moment of starting closing the intake valve. The tempering prevention method decay time spraying hydrogen of the hydrogen fuel combustion engine provided by the invention has the advantages of avoiding hydrogen spraying from happening in a valve overlap at the air inflow starting moment, reducing the residence time of the hydrogen in an intake tube as far as possible, and reducing the litten probability of a gas mixture and reducing the probability of the tempering through an air inflow cooling inlet manifold internal hot point; fixing the hydrogen spraying manner of each way of most length hydrogen spraying extended period no matter what load size, and ensuring not to close to the overlap partat the open front end of the inlet valve at the starting moment of each way of hydrogen spraying; and effectively preventing the tempering, combining the adjusting ignition, and effectively restraining abnormal combustion.

The invention aims at providing a control method of air inletting vortex of a diesel engine; the method can control the vortex intensity fast and accurately so as to meet the requirement of the diesel engine under various working conditions; the control method of the invention essentially comprises the following steps: the control amount of open-loop and the control amount of closed-loop of the vortex are determined according to the operating working condition of the engine and the control mode of the vortex is selected; if the open-loop control mode is adopted, the control amount of the open-loop is directly used for adjusting a vortex valve; if the control modes of the open-loop and the closed-loop are adopted, the control amount of the open-loop and the control amount of the closed-loop are added to adjust the vortex valve. The method combines the control mode of the open-loop and the control mode of the closed-loop; and a self-adapting calculating method is adopted in the control modes of the open-loop and the closed-loop, thus leading the vortex intensity to response the requirement of mixed fuel gas burning fast and accurately being compatible with the power, economic efficiency and environmental protection requirement of the engine, and guaranteeing good comfortableness of driving and being applicable to the requirement of the modern automobile.

The invention discloses a dual-motor integrated driving system of an electric vehicle, and belongs to the technical field of driving systems of electric vehicles. The driving system comprises a casing, a dual-motor assembly and a control assembly; the dual-motor assembly includes a motor I and a motor II connected through a synchronizer; the motor I is relatively big in size; the control assemblyis arranged at the top parts of the motor I and the motor II; the control assembly comprises an insulated gate bipolar translator (IGBT) power unit I and an IGBT power unit II correspondingly used forsupplying power for the motor I and the motor II; the IGBT power unit I is arranged above the motor II; and the IGBT power unit II is arranged above the motor I. The driving system has the beneficialeffects that the dual-motor assembly and the control assembly are integrated in the casing, and the structural difference of the dual-motor assembly is fully utilized to arrange the control assembly,so that the space is fully utilized, and the whole vehicle layout is facilitated; and heat emission can be performed simultaneously on the dual-motor assembly and the control assembly through a designed water cooling assembly, so that the integral heat emission efficiency is increased.

The invention relates to a partition-type engine cover outer plate, in particular to a bionic partition-type engine cover outer plate with an olecranon characteristic for a sportscar. The engine cover outer plate adopts a bionic design idea; an olecranon with favorable air adhesion decreasing and resistance reducing characteristic is used for a sportscar engine cover design, i.e., the outline curve of the engine cover outer plate is of a longitudinal-section outline bionic characteristic curve shape of the olecranon. The partition-type engine cover outer plate is capable of better achieving an enveloping effect on an engine and other parts in an engine compartment, is relatively good in heat insulation and sound insulation effects, and is simple in structure, streamline in modeling, beautiful in appearance and low in wind resistance coefficient.

The invention discloses a hydraulic tappet mechanism with an engine valve lift being continuously variable. The hydraulic tappet mechanism comprises a control wheel, a one-way valve, a return spring,a control valve rod and a shell. The shell is installed on the outer portion of the control wheel in a sleeving mode, an oil drainage channel is formed in the shell, the control wheel is arranged on the control valve rod in a sleeving mode, the one-way valve is arranged at the bottom end of the control valve rod, and a piston is arranged on the outer portion of the one-way valve; and the piston isin contact with the return spring, a control area is formed on the piston, when the control valve rod is at different angles, the positions of the control area are different, adjustment of differentpressure relief heights can be achieved, and the engine valve lift is finally changed. According to the hydraulic tappet mechanism, the oil drainage lift of a hydraulic tappet is adjusted through a mechanical mode, so that the situation that the engine valve lift is continuously variable is achieved, the structure is simple, and arrangement in an engine cylinder head is easy.

The invention relates to a six-gear hybrid transmission for a hybrid electric vehicle and an application method thereof, which belong to the technical field of hybrid electric vehicle transmissions. The technical scheme is that the six-gear hybrid transmission for the hybrid electric vehicle comprises a No. 2 driving gear (12) and a No. 3 driving gear (11), a No. 1 driving gear (21), a M1 gear driven gear (34), a G1 gear driven gear (33), a G3 gear driven gear (32), a main speed reduction driving gear (31), a No. 2 synchronizer S2 and a No. 4 synchronizer S4, an M2 gear driven gear (44), a G2 gear driven gear (43), a G4 gear driven gear (42), a main speed reduction driving gear (41), a No. 1 synchronizer S1 and a No. 3 synchronizer S3 as well as a driving gear, wherein the No. 2 driving gear (12) and the No. 3 driving gear (11) are placed on an engine input shaft (10); the No. 1 driving gear (21) is placed on a motor EM1 input shaft (20); the M1 gear driven gear (34), the G1 gear driven gear (33), the G3 gear driven gear (32), the main speed reduction driving gear (31), the No. 2 synchronizer S2 and the No. 4 synchronizer S4 are placed on an output shaft I (30); the M2 gear driven gear (44), the G2 gear driven gear (43), the G4 gear driven gear (42), the main speed reduction driving gear (41), the No. 1 synchronizer S1 and the No. 3 synchronizer S3 are placed on an output shaft II (40); and the driving gear is placed on a motor EM2 input shaft (60). The six-gear hybrid transmission for the hybrid electric vehicle is advantaged in that the driving comfort and dynamic property are improved, the oil consumption of the hybrid vehicle is reduced and the exhaust emission is reduced.

The invention relates to the field of pure electric vehicles, and in particular relates to an electric driving system and an electric vehicle. The electric driving system comprises a first motor, a second motor and a speed change mechanism. The speed change mechanism comprises a differential mechanism, a gear shifting mechanism and a planetary speed reducing mechanism. A first motor shaft of the first motor is connected with a sun gear of the planetary speed reducing mechanism, and a front gear ring of the planetary speed reducing mechanism is connected with the input end of the differential mechanism. A second motor shaft of the second motor is connected with the input end of the differential mechanism through the gear shifting mechanism; the two output ends of the differential mechanismdrive wheels to rotate through a left half shaft and a right half shaft respectively. A planet carrier of the planetary speed reducing mechanism is provided with a locking clutch so as to achieve locking and unlocking of the planet carrier. When the electric driving system is used on the vehicle, the requirement for motor power is low, cost is reduced, one motor can provide torque compensation forthe other motor during gear shifting, and power interruption is avoided; and the switching of working modes can be realized through the locking clutch.

The invention discloses a control strategy of an engine with a low-pressure exhaust gas recirculation (EGR) system, and a vehicle. The control strategy at least comprises the following steps: the rotating speed and torque of the engine are detected; and the opening degree of an EGR valve is determined and adjusted according to the rotating speed and torque of the engine and the EGR rate map, the EGR rate map includes a plurality of areas, and each area corresponds to the specific EGR rate. Thus, when the engine is under different loads and torque, the EGR rate is reasonably adjusted, thus seamless switching among various EGR rate control strategies is achieved, and smooth driving is achieved on the basis of ensuring reducing of fuel consumption of the engine. Therefore, power performance of the vehicle is improved, and the power performance and smoothness of the vehicle are effectively taken into account.

The invention discloses a CVT speed reducer for a pure electric vehicle. The CVT speed reducer for the pure electric vehicle comprises an input shaft and an output shaft, and further comprises a driving wheel and a driven wheel; the driving wheel is connected with the input shaft; the driven wheel is connected with the output shaft; and the driving wheel and the driven wheel are connected througha transmission belt, and are diameter-variable transmission wheels. The CVT speed reducer for the pure electric vehicle is reasonable in structural design; a chain wheel is adjusted through a hydraulic torque converter to realize an adjustable transmission ratio; the overall vehicle dynamic property and economy can be both considered; the high-speed economy is improved; the internal structure of the speed reducer is simplified; and the vehicle advancement and retreating can be realized through forward and reverse rotation of a motor; and through enlargement of an efficient section of the driving motor, the overall vehicle endurance is improved.

The invention discloses a hybrid power system for a fixed-wing unmanned aerial vehicle and a propelling method. The system comprises a first propulsion motor, a first propeller, a first ISG motor, a first ISG motor clutch, a second propeller, a power controller, a battery pack, a transmission shaft, a third propeller, a second ISG motor clutch, a second ISG motor, a fourth propeller, a second propulsion motor, a first bevel pinion set, a transmission shaft bevel gear set, a second bevel pinion set, a main propeller, a main propeller clutch, a fuel engine and a transmission shaft clutch. The hybrid power system combines the advantages of fuel propulsion and pure electric propulsion, has multiple hybrid propulsion modes, and can effectively improve the whole voyage of the fixed-wing unmanned aerial vehicle.

The invention discloses a hybrid vehicle. The hybrid vehicle includes a drive device and a transmission device connected to the drive device, the transmission device receiving a driving force from the drive device and transmitting the driving force to at least one of a wheel and an accessory device of the hybrid vehicle. According to the hybrid vehicle, an accessory driving assembly with high output power can be arranged, and vehicle functions with various purposes can be achieved.

The invention provides a power control method and device and an electric drive vehicle. The power control method is applied to the electric drive vehicle and includes the steps that an available powerparameter sent by a battery management system of the vehicle is received; a basic need power parameter of an air conditioner of the vehicle is determined; the air conditioner is controlled accordingto the basic need power parameter; a first surplus power parameter is determined according to the available power parameter and the basic need power parameter; a dynamic power parameter required by amotor of the vehicle is determined; and the motor is controlled according to the first surplus power parameter and the dynamic power parameter. By the adoption of the power control method, on the basis that the basic temperature need of a driver is met, the dynamic need of the vehicle can be met to the maximum degree, and in other words, the comfort of the driver and the dynamic property of the vehicle are considered.

The invention discloses a control method and device of a dual-motor vehicle and electronic equipment. The method comprises the steps that on the basis of vehicle parameters and driving parameters which are obtained in advance, the vehicle acceleration, the road adhesion coefficient and the road slope are calculated, the driving parameters at least comprise the steering wheel rotation angle and the accelerator pedal opening degree, and the vehicle parameters at least comprise the current vehicle speed; calculating a driving stability factor based on the vehicle acceleration, the road adhesion coefficient, the steering wheel angle and the current vehicle speed; determining a target working mode based on the driving stability factor, the accelerator pedal opening degree, the current vehicle speed, the road slope and a control mode selected by a driver; and calculating a torque distribution parameter according to the target working mode and the vehicle state of the driving vehicle. The technical problem that the current electric vehicle lacks consideration on the power performance of the whole vehicle and the intention of a driver in the prior art, and the operation performance is affected is solved.