132results about "Road transport" patented technology

The invention relates to the field of vehicle control, in particular to an intelligent oil-saving sliding control method and system for an AMT commercial vehicle and the commercial vehicle, and the method comprises the steps: obtaining a gradient threshold interval and hysteresis width corresponding to a current state based on the total load of the vehicle, the real-time vehicle speed and the real-time road gradient; whether the engine water temperature and the accelerator opening degree signal meet preset fuel-saving sliding admission conditions or not is judged in real time; when all the access conditions are met and the real-time gradient and the vehicle speed are within the threshold interval, gear combination of the AMT gearbox is maintained, an engine is controlled to enter a fuel cut-off mode, and the vehicle enters an intelligent fuel-saving sliding state based on engine reverse towing; and if the real-time gradient exceeds the safety range, engine fuel oil supply is immediately recovered, and the in-cylinder braking or exhaust braking function of the engine can be cooperatively activated, so that the fuel-saving sliding state is stably quitted. And on the premise of ensuring compliance and safety of the whole process, the fuel economy is effectively improved.

A computer system for controlling a powertrain system of a vehicle, the powertrain system comprising an internal combustion engine connectable to one or more drive wheels, the computer system comprising processing circuitry configured to selectively operate the powertrain system in: a first freewheeling mode; a second freewheeling mode; a coasting mode; and an engine braking mode; wherein the processing circuitry is further configured to: determine vehicle target speed; determine that freewheeling mode condition is fulfilled based on any one of topography data and vehicle data; determine that the powertrain system is operating in either first freewheeling mode or second freewheeling mode; if the powertrain system is operating in first freewheeling mode and an acceleration level fulfills an acceleration level condition, control the powertrain system from first freewheeling mode to the coasting mode; and if the powertrain system is operating in second freewheeling mode, further determine to maintain second freewheeling mode.

The driving force control device includes: a requested driving force calculation unit configured to calculate requested driving force requested to the vehicle, in a coasting state where neither an accelerator operation nor a brake operation is performed by a driver; a power train control unit configured to control a gear ratio of the power train on the basis of the requested driving force and driving force that is achieved by the power train in the coasting state; a braking force calculation unit configured to calculate braking force required for achieving the requested driving force, when the requested driving force is smaller than driving force that is achieved by the power train at a gear ratio set by the power train control unit; and a brake control unit configured to cause the brake to generate the braking force calculated by the braking force calculation unit.

The present application discloses a vehicle shift control method, device, electronic device and storage medium, belonging to the field of vehicle technology. The method includes: judging whether the vehicle meets the basic conditions of calculating the target shift point speed and the vehicle's traction capacity after shifting using only a basic shift map, and whether the vehicle is in a coasting state in gear, to generate a first judgment result; determining the target shift point speed and the vehicle's traction capacity after shifting based on driving environment parameters, internal system parameters, target shift mode and the first judgment result; judging whether the vehicle meets the shift conditions based on the internal system parameters, the target shift point speed and the vehicle's traction capacity after shifting, to generate a second judgment result and perform an automatic shift operation based on the second judgment result. The present application can propose a set of gear switching control logic that takes into account both vehicle driving dynamics and fuel economy on the basis of reducing calibration tables, which is conducive to improving the user's driving experience.

This invention provides a control method and apparatus for a dual-clutch transmission. During vehicle coasting, it detects in real-time whether there is a need for braking downshifting. If a braking downshifting need is detected, it determines whether the need is for multiple gear downshifts. If it is, it collects current operating condition information and, based on this information and the target gear, controls the torque of the target clutch in the dual-clutch transmission to maintain the target torque until the vehicle downshifts from the current gear to the target gear. If the need is for a single gear downshift, it uses a coasting-without-throttle downshifting method to downshift from the current gear to the target gear. Based on this invention, it not only solves the problems of jerking caused by untimely downshifting and frequent clutch interaction when braking hard during coasting, but also addresses the issue of weak throttle response after braking during coasting.

Shift control method for a vehicle with a dual clutch transmission, comprising the shift control method: a disengagement start process (S10) of the, when a power-on downshift is initiated, causing a control device to initiate the disengagement of a disengagement-side clutch, so that an engine speed increases to above a speed of the disengagement-side clutch, a first initialization process (S40) of causing the control device to set a torque of the release-side clutch calculated by means of a torque model of the release-side clutch as the pilot torque and causing the torque of the release-side clutch to converge to the pilot torque during a first reference period, a first control process (S50) of which, when the first reference time has elapsed, causes the control device to calculate a feedback torque as a function of a clutch slip change rate and to control the torque of the disengaging clutch using the sum of the feedforward torque and the feedback torque, and a first torque transfer operation (S60) of the, when the control device determines that a preparation for carrying out a torque phase during the execution of the first control operation (S50) is completed, causing the control device to disengage the disengaging clutch for a predetermined second reference time period, so that the torque of an engaging clutch increases in accordance with the torque of the motor.

The present disclosure relates to a computer system (100) for controlling a powertrain system (11) of a vehicle (10), the powertrain system comprising an internal combustion engine (12) connectable to one or more drive wheels, the computer system comprising processing circuitry (102) configured to selectively operate the powertrain system in: a first freewheeling mode (FM1); a second freewheeling mode (FM2); a coasting mode (CM); and an engine braking mode (EBM); wherein the processing circuitry (102) is further configured to: determine a vehicle target speed; determine that a freewheeling mode condition is fulfilled based on any one of topography data and vehicle data; determine that the powertrain system is operating in either the first freewheeling mode or the second freewheeling mode; if the powertrain system is operating in the first freewheeling mode and an acceleration level fulfills an acceleration level condition, control the powertrain system from the first freewheeling mode to the coasting mode; and if the powertrain system is operating in the second freewheeling mode, further determine to maintain the second freewheeling mode.

The embodiment of the invention relates to a clutch control method and device based on an automatic transmission vehicle and the vehicle. The method comprises the steps that whether the vehicle is in a preset neutral gear sliding working condition or not is detected; when the vehicle is in the preset neutral-gear sliding entering working condition, whether the vehicle meets a preset neutral-gear sliding forbidding condition or not is determined, and the preset neutral-gear sliding forbidding condition is used for forbidding neutral-gear sliding of the vehicle; and when the preset neutral gear sliding forbidding condition is met, the fourth clutch is controlled to be switched from the closed state to the open state, and when the fourth clutch is in the open state, the vehicle does not conduct neutral gear sliding. According to the technical scheme, on the basis that the control cost is not increased, the problem of neutral gear sliding of the vehicle is avoided, and the driving experience of a user is improved.

Method for setting the driving mode of a vehicle (4) powered by at least one electric machine (6), wherein several stages of recuperation operation and a coasting mode are provided for the driving mode, wherein a first operating step or a second operating step is performed with a control element (12, 12a, 12b), wherein each single execution of the first operating step with the control element (12, 12a, 12b) increases the stage of recuperation operation, wherein repeated execution of the first operating step with the control element (12, 12a, 12b) sets a stage of recuperation operation that is higher than a lowest stage of recuperation operation, wherein a first movement is performed when the first operating step is carried out and a second movement is carried out when the second operating step is carried out, wherein the two movements are opposite to each other, characterized in thatthat when performing the second operating step with the control element (12, 12a, 12b) starting from the set higher level of recuperation operation, the sailing operation is directly stopped.

This invention provides a method, apparatus, device, and readable storage medium for generating accelerator pedal maps. The method includes: dividing an initial acceleration response map with no acceleration data into regions corresponding to various preset operating conditions; obtaining and writing the acceleration at each position in each region according to the design scheme corresponding to each preset operating condition to obtain a complete acceleration response map; converting the acceleration in the complete acceleration response map into wheel-side driving torque to obtain a wheel-side driving torque response map; and obtaining an accelerator pedal map for each gear based on the wheel-side driving torque response map and a shift map, wherein the shift map is used to characterize the gear corresponding to different vehicle speeds and different accelerator pedal openings. This invention improves the efficiency of accelerator pedal map generation and facilitates the implementation of a unified power performance style for automobile manufacturers.

A vehicle (1), comprising: a torque generating machine (4); one or more driven wheels (W D ); a drive train (6) for transmitting torque from the torque generating machine (4) to the one or more driven wheels, the drive train (6) comprising torque transmission means (8); a first decoupling mechanism (11) that is operable to decouple the torque transmission means (8) from the torque generating machine (4), wherein the first decoupling mechanism (11) is closed to couple the torque transmission means (8) to the torque generating machine (4) and open to decouple the torque transmission means (8) from the torque generating machine (4); a second decoupling mechanism (12) that is operable to decouple the torque transmission means (8) from the one or more driven wheels, wherein the second decoupling mechanism (12) is closed to couple the torque transmission means (8) to the one or more driven wheels and open to decouple the torque transmission means (8) from the one or more driven wheels; and a controller (2) with at least one electronic processor (P) for controlling the operation of the first and second decoupling mechanism (11, 12), wherein at least one electronic processor (P) is configured to: to determine a target operating speed of the torque generating machine (4); to control the working speed of the torque generating machine (4) depending on the determined target operating speed; to close the first decoupling mechanism (11) when the operating speed of the torque-generating machine (4) corresponds at least substantially to the determined target operating speed; and to close the second decoupling mechanism (12) after closing the first decoupling mechanism (11).

Disclosed are a method and device for controlling the state switching of a fluid torque converter, a vehicle and a storage medium, the method comprising: obtaining a target instruction when the torque converter of the vehicle is in a locked state, the target instruction triggering a change in the torque transmission direction of a transmission system of the vehicle; obtaining a state parameter, and determining whether the current vehicle is in a target operating condition according to the state parameter; and if the current vehicle is in the target operating condition, switching the fluid torque converter to an open state, and switching the torque converter back to the locked state after maintaining the open state for a preset period of time. The present disclosure accurately recognizes a target operating condition, controls the hydraulic torque converter to open quickly and briefly under the target operating condition, absorbs the shock caused by the impact of a transmission component when the torque transmission direction of the transmission system is switched, and reduces the vibration of the vehicle. By controlling the fluid torque converter to close again after briefly opening, the fuel consumption is reduced and on the basis of ensuring fuel economy, the driving experience of the user is improved.

The invention discloses a vehicle stability control method, a controller, a dragging control system controller, a storage medium and a program product. The vehicle stability control method comprises the steps that a first signal related to insufficient steering and a second signal related to excessive steering are obtained; when the vehicle is subjected to sliding recovery, according to the first signal and the second signal, whether an intervention condition for intervening sliding recovery is met or not is judged; in response to the intervention condition being satisfied, intervening the glide reclaim; wherein the intervention condition is set according to the driving working condition of the vehicle. Examples of the present application may provide a better taxiing energy recovery intervention strategy.

The invention relates to a method for operating the drivetrain of a motor vehicle, wherein a sailing mode is described in which, during travel of the motor vehicle, an internal combustion engine in the drivetrain is disconnected and switched off via an intermediate starting element from at least one drive wheel. To end the sailing mode, the internal combustion engine is started as a tow start, during which the starting element transmits torque between the internal combustion engine and the at least one drive wheel, and the internal combustion engine is subsequently towed by the at least one drive wheel.During the tow start procedure, any slippage of at least one drive wheel occurring during the towing of the internal combustion engine is determined, whereby a blocking notice is generated depending on the determined slippage occurring, with the presence of which further tow starts are prevented during a current driving cycle of the motor vehicle to terminate further sailing operations.

The present invention proposes a dual-clutch transmission hill start control method, system, electronic device and storage medium with an automatic parking system. The method includes: adding a torque control path during parking, considering closing the PID control torque path, and calculating the torque and engine speed change rate correction coefficient in combination with the engine torque change to improve the comfort of hill start parking and avoid stalling. The solution proposed by the present invention achieves fast clutch separation through the optimization of the transmission control strategy without changing the transmission hardware structure, thereby preventing the problems of stalling and stalling and improving the product's drivability and comfort.

The present application relates to the field of vehicle control, and provides a vehicle with-gear coasting control method, device and equipment, the method comprises the following steps: in the vehicle state of loose throttle and loose brake and non-empty gear, it is judged whether the gear is the lowest limit gear of coasting; if it is not the lowest limit gear of coasting, the vehicle enters the gear shift mode after triggering the gear shift point in the coasting process; if it is the lowest limit gear of coasting, it is judged whether the clutch is separated; if the clutch is separated, the first coasting mode with gear is entered; if the clutch is combined, the second coasting mode with gear is entered. The present application solves the problem of abnormal wear of the clutch and impact of the vehicle caused by frequent separation and combination of the clutch during coasting with gear in the prior art, and improves the adaptability and driving comfort of the vehicle in complex scenarios.

Cruise control method for a hybrid electric vehicle, comprising: Switching on a cruise control mode in the hybrid electric vehicle, the hybrid electric vehicle using an internal combustion engine (31) and a drive motor (32) as vehicle drive sources; Selecting a selected mode in a pulse and slide (PnG) mode in dependence on vehicle condition information, wherein the selected mode is selected between a first PnG mode and a second PnG mode; and Executing control of the hybrid electric vehicle with the selected mode, where: in the first PnG mode, driving of the hybrid electric vehicle is carried out in a sliding phase by inertia of the hybrid electric vehicle, wherein a pulse phase and the sliding phase are alternately repeated between a predetermined upper threshold value of a vehicle speed and a predetermined lower threshold value of the vehicle speed; and in the second PnG mode, acceleration of the hybrid electric vehicle is carried out in the pulse phase by the internal combustion engine (31) or both the internal combustion engine (31) and the drive motor (32), and deceleration of the hybrid electric vehicle is carried out in the slip phase by inertia of the hybrid electric vehicle and torque assistance of the drive motor, wherein the pulse phase and the slip phase are alternately repeated between the predetermined upper threshold value of the vehicle speed and the predetermined lower threshold value of the vehicle speed, wherein the vehicle state information is an absolute value of a vehicle acceleration, and, when the absolute value of the vehicle acceleration is greater than a predetermined threshold value in the first PnG mode, the first PnG mode switches to the second PnG mode, wherein the vehicle acceleration is an acceleration or deceleration degree of the hybrid electric vehicle.

The present invention relates to a control device (10) for a motor vehicle, the control device being designed to: read out the current position of an input element (16) that can be adjusted from its starting position to its end position, and output at least one control signal (18) to at least one vehicle component (20) of the motor vehicle if the control device (10) reads out that the input element (16) is adjusted into a sliding area, thereby controlling the at least one vehicle component (20) so that the motor vehicle can continue to move forward when idling; determine whether the current adjustment speed is lower than a predetermined comparison speed, and output at least one control signal (18) to at least one vehicle component (20) if the input element (16) is in a first intermediate area between a braking area and a sliding area or in a second intermediate area between a sliding area and an acceleration area, and the current adjustment speed is lower than the comparison speed.

The embodiment of the present disclosure discloses a vehicle control method, a vehicle and a computer readable storage medium. The method comprises: acquiring an accelerator pedal signal of a vehicle; in the case that the accelerator pedal signal indicates that the accelerator pedal is faulty, acquiring a brake pedal signal of the vehicle; in the case that the brake pedal signal indicates that the brake pedal is not faulty, starting a vehicle speed control mode to control the vehicle to travel according to the vehicle speed control mode; in the case that the brake pedal signal indicates that the brake pedal is faulty, controlling the current torque of the vehicle to reduce to a first value, so that the vehicle is in a coasting state.

This invention relates to an adaptive coasting control method and apparatus in cruise mode, belonging to the field of assisted driving technology. The adaptive coasting control method in cruise mode includes: acquiring multiple downhill sections within a map data coverage area that meet preset conditions; determining the target downhill section the vehicle is about to reach based on the vehicle's current position; and determining the starting point position for coasting in neutral mode based on the starting point position of the target downhill section, the vehicle's current speed, the target cruise speed, the lower limit of cruise speed fluctuation, and the vehicle's running resistance. This invention reduces the complexity and cost of coasting in neutral mode during cruise through simplified control steps and is applicable to complex roads with multiple downhill sections, improving the flexibility of the coasting control strategy.

Provided are a battery and a battery module. The battery includes a housing, a core, a first connection piece, and a plate. The core is disposed in the housing. The first connection piece is disposed on one end of the housing. The first connection piece is connected to the core. The plate is disposed on the side of the first connection piece facing away from the core. The side surface of the plate facing away from the first connection piece is provided with at least two concave arc-shaped grooves at intervals. All of the arc-shaped grooves are uniformly disposed annularly along the center of the plate. Groove bottoms of the arc-shaped grooves are welded to the first connection piece. According to the battery, the welding effect between the first connection piece and the plate is improved by disposing arc-shaped grooves on the plate.

The present invention discloses a method and device for determining a vehicle's glide mode. The method includes: upon detecting a vehicle downhill event, determining a first energy loss in a first glide mode based on downhill information; the first energy includes mechanical energy; determining a second energy loss in a second glide mode; the second energy includes mechanical energy and fuel consumption; and determining the vehicle's glide mode based on the first and second energies. By implementing the technical solutions provided in the embodiments of the present invention, energy loss during a vehicle's downhill journey can be reduced, thereby improving the vehicle's fuel economy.

The present disclosure relates to a device for controlling the coasting mode of a vehicle in the context of a distance control and / or speed control function of the vehicle. In one form, a device is designed to predict a distance and / or speed graph for the vehicle in the coasting mode on the basis of a current degree of advancement of the vehicle, and to compare the predicted distance and / or speed graph for the vehicle with a target distance and / or a target speed of the distance control and / or speed control function of the vehicle. The device is also designed to control the coasting mode depending on the comparison.

To provide a controller capable of suppressing wrong learning of engagement pressure of an engagement side hydraulic frictional engagement device, in a stepped transmission comprising a plurality of hydraulic frictional engagement devices.SOLUTION: When an inertia phase is started in a state in which an engagement pressure PRcb1 of an engagement side engagement device CB1 is a standby pressure PRconst, and a post-correction engagement pressure PRcb1 calculated based on a learning value S calculated after downshift changes to a pressure reduction side with respect to a pre-learning engagement pressure PRcb1, an electronic controller 90 prohibits correction of the engagement pressure PRcb1, so that it is possible to prevent the engagement pressure PRcb1 from being continuously corrected toward the pressure reduction side by the learning value S calculated under a condition that is not suitable for learning.SELECTED DRAWING: Figure 1

Methods, systems, and non-transitory computer readable media configured to perform operations comprise determining, by a computing system, speeds and stations of a plurality of leading vehicles traveling ahead of an ego vehicle; calculating, by the computing system, a coasting viability factor based on the speeds and stations of the plurality of leading vehicles and a speed and station of the ego vehicle; comparing, by the computing system, the coasting viability factor to a coasting viability threshold; and determining, by the computing system, whether the ego vehicle should coast based on the comparing.

A transmission (21) as a power transmission device for a vehicle comprises an input shaft (22), an output shaft (23), a planetary continuously variable transmission mechanism (31), a direct connecting mechanism (27), and an idler gear (29). The direct connecting mechanism (27) comprises a direct connecting clutch (30). The planetary continuously variable transmission mechanism (31) comprises a planetary gear mechanism (32), a pump side clutch (33), a hydraulic pump (36), a hydraulic motor (38), and a motor side clutch (40). The hydraulic pump (36) and the hydraulic motor (38) are connected via a pair of main lines (37A, 37B). An electromagnetic on-off valve (41) capable of switching between a communicating state and a blocking state between the pair of main lines (37A, 37B) is provided between the pair of main lines (37A, 37B).

The present application relates to the technical field of vehicle control, and specifically relates to a coasting energy recovery control method and control system. The method comprises: recognizing the terrain of the road surface on which a vehicle is traveling, and calculating a road surface energy recovery coefficient on the basis of the terrain of the road surface on which the vehicle is traveling; estimating the weight of the vehicle, and calculating a vehicle weight energy recovery coefficient on the basis of the current estimated vehicle weight; identifying the slope condition of the road on which the vehicle is traveling, and calculating a slope energy recovery coefficient on the basis of the slope condition of the road on which the vehicle is traveling; identifying a curve in the road on which the vehicle is traveling, and calculating a curve energy recovery coefficient on the basis of the traveling state of the vehicle at the curve; calculating an initial energy recovery coefficient at the current moment; calculating a corrected energy recovery coefficient at the current moment; and obtaining a corrected energy recovery torque at the current moment. By means of the present application, coasting energy can be recovered to the maximum extent, the driving comfort, stability and controllability can be ensured, and both the coasting energy recovery and driving and riding experience are taken into consideration.

This application provides a method and apparatus for determining torque during dual-clutch upshifting. The method includes: acquiring a first torque delivered by the engine before upshifting and an inertial torque when the engine speed is at a target acceleration before upshifting; determining a target required torque for the engaged clutch based on the first torque and the inertial torque; determining a target speed difference between the engaged clutch and the engine; acquiring a friction coefficient compensation coefficient of the engaged clutch at the target speed difference; and determining the final required torque for the engaged clutch based on the target required torque and the friction coefficient compensation coefficient. Considering the speed difference between the engaged clutch and the engine during gear shifting, the calculated final required torque for the engaged clutch is more accurate than using a calibration value in the prior art, providing more accurate torque during upshifting and improving the overall vehicle performance.

A battery-operated vehicle (BOV), comprising a battery configured to provide the source power of the BOV, and at least one processor included in a processing and memory circuitry (PMC) operatively connected to the battery, where the at least one processor being configured to a) obtain data indicative of first and second locations; b) determine data indicative of a battery power consumption that is required to navigate the BOV from the first location to the second location; c) obtain data indicative of a current power level of the battery; d) compare the data indicative of the required battery power consumption to the data indicative of the current power level of the battery for determining remaining battery power status for navigating the BOV from the first location to the second location, and e) provide an indication based on the determination.