122results about How to "Improve fuel efficiency" patented technology

The invention discloses a medical instrument full-trace supply chain management method and system, and relates to the technical field of medical instrument supply chain management. The medical device all-tracking supply chain management method comprises the steps of obtaining current order demand data, order delivery destination information, medical device inventory position information and historical order data of each medical device; according to the method, the current order demand and the inventory state of the medical apparatus and instruments are tracked in real time, the historical order data are combined, the potential inventory insufficiency problem is recognized in advance, calculation of the safety inventory value is based on detailed historical analysis, and the safety inventory value of the medical apparatus and instruments is obtained. Comprising order demand and processing cycle, so that inventory management is more accurate and high in predictability, application of real-time data and intelligent calculation of safe inventory significantly improve the response speed and reliability of a supply chain, and it is ensured that medical services are not interrupted due to supply problems.

A cooling system for vehicles and a control method thereof improves indoor heating performance and fuel efficiency by controlling a flow rate of a coolant passing through a heater core together with an EGR cooler. A coolant having an increased temperature is first supplied to the heater core side through a flow stagnancy control to rapidly increase the temperature of the coolant flowing in the heater core, thereby improving heating performance. A warm-up feature is improved through an exhaust heat recovery function by a heat exchange between the exhaust gas and the coolant in the EGR cooler, thereby improving efficiency of fuel.

The invention discloses an application method of fireproof thermal insulation materials with different fire resistance grades on an ocean vessel, and relates to the technical field of ships. The laying thicknesses of the fireproof heat-insulation materials are different according to the fire resistance grade, the material type and the ship body laying position of the fireproof heat-insulation materials. According to different fireproof grades, material types, ship body laying positions and laying thicknesses of the fireproof heat insulation materials, the fireproof heat insulation materials with different thicknesses can be arranged under different conditions, the weight and cost of the ship can be reduced, and meanwhile the heat insulation and fireproof performance is guaranteed.

The invention relates to a vehicle body welding spot topological optimization system and method, a storage medium and electronic equipment. The vehicle body welding spot topological optimization system comprises a CAD / CAE module, a topological optimization module, a finite element analysis module and an output module, wherein the CAD / CAE module is used for importing and / or establishing a vehicle body model and simulating the vehicle body model; performing initial performance analysis by using a finite element analysis module; a topological optimization module is used for optimizing a vehicle body structure by applying a topological optimization algorithm; the finite element analysis module performs finite element analysis on the optimized vehicle body structure and verifies the effectiveness and feasibility of an optimization scheme; and the output module outputs the optimized vehicle body structure model and the welding spot layout drawing, and the readable storage medium and the electronic equipment with the program. An existing simulation welding spot optimization method is only used for optimizing the distribution distance or the size of original welding spots of a vehicle body and has certain limitation. Through optimization, not only can the optimal welding spot position be found, but also weak spots of other connection forms can be found, and the performance is enhanced.

The invention relates to a wheel device, a vehicle having the wheel device and a method of controlling the wheel device. The wheel device comprises a wheel body, a cover element and a transmission assembly. The wheel body is provided with a plurality of spokes which are arranged at intervals at a preset angle, and a through opening through which air can pass is formed between every two adjacent spokes; the cover element can cover the side face of the wheel body in a rotating mode relative to the wheel body around the rotating axis of the wheel body and is provided with at least one hole opening area. A transmission assembly is disposed between the wheel body and the shroud element and is configured to rotate the shroud element relative to the wheel body about a rotational axis of the wheel body when a rotational speed of the wheel body is greater than a predetermined threshold, therefore, the through opening of the wheel body is converted from an open state in which the through opening overlaps with the orifice area to a blocked state in which the through opening does not overlap with the orifice area. The invention has the advantages of reducing air resistance, increasing endurance mileage or fuel efficiency, and improving cooling performance, braking performance and appearance design.

The invention provides a control method and device for an electric vertical take-off and landing aircraft, a hand control part comprises a fixed seat, a control rod and a trigger, the control rod is controlled to move forwards, backwards, leftwards and rightwards, and the trigger is controlled to be lifted and pressed down; the operation on the foot rudder comprises the steps of stepping on the left pedal and stepping on the right pedal; the processing module is used for acquiring control information of the control rod, the trigger and the foot rudder, and generating an operation control command according to the control information of the control rod, the trigger and the foot rudder in combination with the working mode and the operation state of the aircraft; the execution module executes the operation control command on the aircraft. A traditional accelerator and a total distance rod are omitted, the control structure of the aircraft is simplified, a pilot can more quickly adapt to the operation requirements in different flight states by simplifying control logic, and the potential error risk caused by control mode switching is reduced.

The invention relates to a parking regeneration control method and system for a range extender DPF of a diesel engine, and belongs to the technical field of automobile engines. According to the technical scheme, the parking regeneration control method for the diesel engine range extender DPF comprises the steps that S1, whether the parking regeneration condition is met or not is judged; s2, the exhaust temperature of the engine is increased, and the DOC upstream temperature reaches the set temperature value; s3, after-injection is started, the exhaust temperature of the engine is further increased, carbon deposit in the DPF is combusted, and a vehicle power battery is charged in the operation process; and S4, when the carbon loading amount of the DPF is lower than the set carbon loading amount, the engine is shut down after the temperature is reduced. According to the method, the engine utilizes the generator to provide loads, exhaust temperature increase is accelerated, DPF regeneration is promoted, meanwhile, energy generated by engine operation during DPF regeneration is recycled, the aftertreatment temperature is kept to meet the regeneration requirement, parking regeneration time is shortened, noise, loss and oil consumption are reduced, the system energy efficiency is improved, and the negative influence of parking regeneration is reduced.

The invention relates to the technical field of aircraft design, in particular to a sectional type hybrid power supersonic commercial passenger plane which comprises a supersonic main aircraft and a subsonic babysitter machine. In the take-off and landing stages, the subsonic babysitter carries the supersonic main aircraft to form a combined body, an engine of the supersonic main aircraft supplies power to a ducted fan of the subsonic babysitter and charges an energy storage device of the ducted fan, and the main aircraft and the subsonic babysitter cooperate to generate thrust to jointly fly; in the cruising stage, the supersonic main aircraft is separated from the subsonic babysitter, the supersonic main aircraft flies independently, and the subsonic babysitter returns. Through the innovative sectional type structural design, combination and configuration of the propelling system and power distribution and switching integration in the flight stage, efficient, safe and environment-friendly flight of the supersonic commercial airliner is achieved.

The present invention discloses a propeller pitch control method and system for an aircraft, and relates to the field of aircraft. The method comprises: monitoring flight state parameters in real time through a sensor module on the aircraft, the parameters including the altitude, speed, acceleration and thrust demand of the aircraft; using a control algorithm to calculate the optimal pitch angle of the current flight stage according to the flight state parameters; transmitting the optimal pitch angle calculated by the controller to the propeller actuator; the propeller actuator adjusts the pitch angle according to the instructions of the controller; monitoring the actual pitch angle through a feedback system, and comparing it with the target pitch angle; adjusting the control strategy in real time according to the comparison result to ensure that the pitch angle of the propeller meets the requirements of the current flight conditions. The technical solution of the present invention can effectively improve the thrust output and flight stability of the aircraft in different flight stages.

The invention relates to the technical field of steering control, in particular to an electromechanical steering control system and method.The system comprises a steering handle, a controller, an electromechanical control unit and a display interaction screen; the steering handle is provided with a micro-motion device used for controlling fine-tuning steering and an angle sensor used for detecting the swing angle of the steering handle. The output end of the micro-motion device and the output end of the angle sensor are connected to the input end of the controller, and the signal line ends of the controller, the display interaction screen and the electromechanical control unit are connected with one another through a CAN bus. And the controller determines a control strategy based on an output signal of the micro-motion device, an output signal of the angle sensor and / or system parameters displayed in the display interaction screen, and controls the electromechanical control unit to drive the steering oil cylinder based on the control strategy so as to execute the steering action of the target harvesting machine. According to the invention, the softness and the sensitivity of the steering operation are ensured, and the individual requirements of operators on the steering control experience are met.

The invention provides a cold-rolled steel sheet. The cold-rolled steel sheet contains 0.23 wt% to 0.35 wt% of carbon (C), 0.05 wt% to 0.5 wt% of silicon (Si), 0.3 wt% to 2.3 wt% of manganese (Mn), greater than 0 wt% and less than or equal to 0.02 wt% of phosphorus (P), greater than 0 wt% and less than or equal to 0.005 wt% of sulfur (S), 0.01 wt% to 0.05 wt% of aluminum (Al), greater than 0 wt% and less than or equal to 0.8 wt% of chromium (Cr), and the balance of steel. The present invention relates to a cold-rolled steel sheet having a final microstructure containing cementite, transition carbides, and fine precipitates, the final microstructure being characterized in that: the final microstructure of the cold-rolled steel sheet contains, by weight, more than 0% and less than or equal to 0.4% of molybdenum (Mo), 0.01% to 0.1% of titanium (Ti), 0.001% to 0.005% of boron (B), and the remainder being iron (Fe) and unavoidable impurities; the transition carbide comprises epsilon-carbide in which the atomic ratio of a displacement element to carbon is 2.5: 1 or eta-carbide in which the atomic ratio of the displacement element to carbon is 2: 1, the displacement element is any one of Fe, Mn, Cr or Mo, the atomic ratio of the alloy element of the fine precipitate to carbon is 1: 1, and the alloy element is any one of Mo or Ti.

The present invention relates to a hydrogenated petroleum resin capable of simultaneously improving braking performance and fuel efficiency of a rubber composition for tire treads, and a rubber composition for tire treads comprising the same.

This application provides a vehicle control method, device, vehicle, storage medium, and program product, relating to the field of vehicle technology. The method includes: acquiring vehicle information and, based on the vehicle information and a preset speed limit, determining whether to send a command to limit engine torque. The vehicle information includes the current engine speed and torque, vehicle speed prediction data, and torque prediction data. By analyzing the data of the above types of information, and reasonably limiting engine torque, the vehicle's fuel efficiency can be improved.

The invention relates to the technical field of tire manufacturing, in particular to a discontinuous winding belted layer structure, application of the discontinuous winding belted layer structure, an all-steel radial tire and a preparation method of the all-steel radial tire. The belted layer comprises a 1 # belted layer and a 2 # belted layer, the 1 # belted layer is attached to the tire body and is the innermost side in the radial direction, the 2 # belted layer is attached to the 1 # belted layer, the width of the 2 # belted layer is larger than that of the 1 # belted layer, and the belted layer further comprises two groups of discontinuous winding belted layers which are in bilateral symmetry along the center line of the tire tread and are arranged on the same layer surface; the winding belted layer is arranged on the shoulder part of the upper surface of the 2 # belted layer; and the winding belted layer is formed by winding nylon or a steel wire from the shoulder part to the middle part. According to the design of winding the belted layer, the circumferential hooping effect of the belted layer on the tire is increased, and compared with the design of full winding or increasing the belted layer, the cost is reduced, performance excess is avoided, and tire abrasion is improved.

This utility model discloses an ECU with excellent heat dissipation, belonging to the field of turbojet engine technology. It includes an ECU housing, an ECU circuit board inside the housing, a heat dissipation pad at the bottom of the ECU circuit board, and a cooling mechanism at the bottom of the heat dissipation pad. The cooling mechanism includes oil passages located at the bottom of the heat dissipation pad, which are connected to a fuel tank and a fuel pump. Before external fuel enters the fuel pump, it first flows into the ECU housing and then passes through the fuel pump. The oil passages inside the ECU housing and the cooling pad at the bottom of the ECU circuit board allow the fuel to carry away most of the heat generated during ECU operation, thus continuously removing the heat generated during ECU operation. This maintains a stable ECU temperature and ensures the normal operation of the ECU circuit board.

The utility model relates to the field of starters, in particular to a planetary speed reduction type automobile starter which comprises a base, a direct current motor is arranged on the base, a rotor and a stator part are arranged on the direct current motor, the stator part comprises a stator body and magnetic shoe parts, and the magnetic shoe parts are evenly arranged on the inner wall of the stator body at intervals in the circumferential direction. A positioning plate is installed in a gap between the magnetic tile pieces, a positioning groove is formed in the bottom of the positioning plate, a positioning protruding block matched with the positioning groove is arranged on the inner wall of the stator body, and the positioning groove is arranged on the positioning protruding block in a clamping mode. According to the structure, the magnetic tile pieces can be reliably installed on the inner wall of the stator body through the positioning plates, and when the magnetic tile pieces are installed, the magnetic tile pieces can slide into the clamping grooves between the positioning plates by compressing the side walls of the positioning plates, so that the installation is more convenient and faster, and the installation efficiency of the magnetic tile pieces is effectively improved; therefore, the technical effects of reliable positioning and convenient installation of the magnetic shoe piece are realized, and the operation reliability of the rotor is ensured.

A device for controlling driving of an electric four-wheel drive vehicle at the time of shift is provided. The device controls driving of an electric four-wheel drive vehicle to minimize energy loss occurring on a power transmission path during shift, thereby improving fuel efficiency.

The invention discloses an intelligent regulation and control method and system for ship ballast water, and relates to the technical field of data processing. The method comprises the steps of dynamically adjusting an inclination angle threshold value by obtaining ship state data and environment state data, and judging whether a ballast water regulation action is triggered or not; if the ballast water regulation and control action is triggered, obtaining a ballast water regulation scheme through a pre-trained intelligent agent; the intelligent body is trained by taking optimization of ship body stability and fuel efficiency as a target; if the ballast water adjusting scheme meets the requirement, a control instruction is generated according to the ballast water adjusting scheme, and ballast water is adjusted. Through self-adaptive adjustment of the inclination angle threshold value, unnecessary small-amplitude adjustment can be reduced, excessive adjustment is avoided, and therefore energy consumption of the ballast water pump is reduced. The ballast water amount is regulated and controlled through the intelligent agent, the stability of the ship body can be kept, meanwhile, the fuel efficiency is optimized, unnecessary energy waste is reduced, and therefore the operation cost is reduced.

The application discloses an insect exoskeleton morphological layup composite panel, a sandwich structure and a preparation method. The sandwich structure comprises two pieces of bionic layup composite panels and a piece of aramid honeycomb core layer. The bionic layup composite panel draws lessons from the spiral stacking microstructure of the insect exoskeleton, the layup design considers the symmetry and balance requirements of the composite material, a fixed rotation angle is introduced between adjacent fiber layers, and the rotation angle is taken as a period of 180 degrees, and after a plurality of periods are laid and heat-pressed and cured, the bionic layup composite panel is obtained. The bionic layup design effectively reduces the interlaminar shear stress of the composite material, weakens the inherent anisotropy of the composite material, and improves the transverse bearing capacity and impact resistance. The bionic layup composite panel and the aramid honeycomb core layer have the advantages of high specific strength, high specific stiffness, impact energy absorption, vibration and noise reduction, electromagnetic shielding and the like, and a structure and function integrated material with more excellent comprehensive performance is obtained, and the structure and function integrated material is expected to be widely used in main load-bearing structures of various spacecrafts.

This application discloses a control method, apparatus, readable storage medium, and vehicle for an internal combustion engine, relating to the field of engine technology. The control method for the internal combustion engine includes: after the internal combustion engine is started, detecting a first operating condition of the engine; when the first operating condition meets preset first injection conditions, controlling the injector to inject fuel into the intake manifold according to a first injection quantity, so that fuel and air form a first mixture inside the intake manifold; controlling the injector to inject fuel into the intake manifold according to a second injection quantity, so that fuel and air form a second mixture inside the intake manifold, wherein the second injection quantity is greater than the first injection quantity, and the air-fuel ratio of the second mixture is less than that of the first mixture; after the first and second mixtures combust, detecting a second operating condition of the internal combustion engine; when the second operating condition meets preset second injection conditions, controlling the internal combustion engine to inject fuel into the intake manifold according to a third injection quantity, wherein the third injection quantity is greater than the second injection quantity, and the operating temperature of the internal combustion engine corresponding to the second injection condition is greater than the operating temperature of the internal combustion engine corresponding to the first injection condition. This application improves the fuel efficiency of the internal combustion engine.

The invention belongs to the technical field of aviation mechanical control, and relates to an aircraft fuel supply tank which comprises a main fuel tank and a partition frame using an aircraft body, a fuel supply tank front wall plate and a fuel supply tank rear wall plate are formed in the main fuel tank, the left wall plate and the right wall plate of the fuel supply tank are formed through the side walls of the main fuel tank, and a top plate is arranged at the top of the fuel supply tank to form an independent fuel supply tank body. The oil supply tank is divided into a left oil supply tank and a right oil supply tank, the left oil supply tank is communicated with the right oil supply tank, the left oil supply tank is communicated with the jet pump, one-way valves are arranged on the tops of the left oil supply tank and the right oil supply tank, and one-way valves are arranged on front wall plates and rear wall plates of the oil supply tanks. During design, the gravity center of the aircraft can be adjusted by setting the position of the oil supply tank; the fuel oil utilization rate of the long and flat oil tank is increased through the arrangement of the jet pump; the influence of fuel bubbles brought into the fuel tank after the jet pump is exposed out of the fuel surface is eliminated, and the working stability of an engine is improved; the function of oil supply in the airplane negative overload state is achieved; due to the oil transportation redundancy design after an injection power source is lost, the safety of the aircraft is guaranteed.

The present application provides a driving power generation method, device, equipment and engineering vehicle, wherein the driving power generation method includes: when the vehicle is in the driving power generation mode, obtaining the engine demand torque percentage; when the engine demand torque percentage is less than a first threshold, determining the target power generation according to a preset first mapping relationship; and controlling the generator to generate electricity according to the target power generation. The technical solution of the present application can dynamically adjust the generator power generation according to the engine demand torque percentage, which can not only enable the generator to generate electricity in the engine's optimal energy efficiency range, so that the engine consumes less fuel while providing mechanical energy to the generator, but also enable the generator to generate electricity in its own higher efficiency range, so that the generator consumes less mechanical energy while generating electricity, thereby achieving efficiency matching between the generator and the engine, improving power generation efficiency and fuel utilization, and reducing vehicle fuel consumption.

Systems and methods (100) for estimating when an engine event occurs is described. The system includes a controller configured to receive a first signal from at least one knock sensor coupled to a combustion engine, receive a second signal from at least one engine crankshaft sensor coupled to the combustion engine, transform the first and second signals into a plurality of feature vectors using a multivariate transformation algorithm, determine an expected window of an engine event with a statistical model, center a segment of the plurality of feature vectors around the expected window, estimate, using the statistical algorithm, a time in the expected window corresponding to when the engine event occurred, and adjust operation of the combustion engine based on the time.

The invention discloses a preparation method of a carbon fiber composite material shell for a shock absorber, and the preparation method comprises the following steps: step 1, preparing a polydopamine modified layer: immersing a sizing agent-removed carbon fiber cloth into a dopamine mixed solution to obtain a polydopamine grafted and modified carbon fiber; 2, preparing a zinc oxide seed crystal layer: adding the polydopamine grafted and modified carbon fiber obtained in the step 1 into a zinc oxide seed crystal solution to obtain carbon fiber fully coated by the zinc oxide seed crystal layer; the energy recovery mechanism is integrated in the magnetic spring, the excellent damping performance of the shock absorber is reserved, the brand new energy recovery function of the shock absorber is achieved, the energy recovery efficiency is improved through the innovative design, the functionality of the magnetic shock absorber is enhanced, and the energy recovery effect of the shock absorber is improved. And therefore, the device plays a more important role in an automobile suspension system.

The present disclosure relates to a hybrid vehicle driving control method in series mode, a hybrid vehicle driving control device in series mode, a storage medium and a control system. The hybrid vehicle driving control method in series mode comprises determining a driving demand power interval corresponding to driving the vehicle in a target speed range according to the target speed range when the vehicle is driving in series mode; determining a plurality of engine speed values corresponding to the overall efficiency of the engine and the generator exceeding a predetermined threshold based on a plurality of different driving demand powers in the driving demand power interval according to the overall efficiency distribution of the engine and the generator; selecting an engine speed value as a target engine speed value from the plurality of engine speed values according to the target speed of the vehicle driving in the target speed range; and controlling the engine to work at the target engine speed value to output power to drive the vehicle, which can reduce the adjustment frequency of the engine speed and reduce fuel consumption.

A novel generator support belongs to the technical field of engines. A first generator mounting hole and a second generator mounting hole are formed in the support body and used for being fixedly connected with a generator assembly, and a first support mounting hole, a second support mounting hole, a third support mounting hole, a fourth support mounting hole and a fifth support mounting hole are formed in the support body and used for being fixedly connected with an engine cylinder. The first support mounting hole and the fifth support mounting hole are axial holes and used in cooperation with an axial positioning structure of an engine cylinder block, and an avoiding structure, a weight reduction structure and a plurality of reinforcing ribs are arranged on the support body. The novel generator support provided by the utility model has remarkable beneficial effects in the aspects of stably fixing a generator assembly, realizing lightweight design, optimizing spatial arrangement, improving assembly precision and stability, enhancing structural strength, facilitating maintenance and replacement, integrally casting and forming and the like, and has wide application prospect and market value.

The invention relates to an energy accumulator and a heat pump system with the energy accumulator. The accumulator includes a body having an upper body and a lower body. The upper and lower bodies are coupled to each other to have a chamber in the bodies. The accumulator includes: a refrigerant inlet port disposed on the upper body and allowing a mixed refrigerant of a liquid refrigerant and a gaseous refrigerant to flow into the chamber; a refrigerant outlet port provided on the upper body and allowing a gaseous refrigerant separated from the liquid refrigerant to flow out; and a baffle assembly having a vertical baffle vertically disposed in the chamber to prevent a horizontal flow of the liquid refrigerant, a suction pipe to guide a gaseous refrigerant separated from the liquid refrigerant to the refrigerant outlet port, and a horizontal baffle horizontally disposed in the chamber to prevent a vertical flow of the liquid refrigerant.

The invention discloses a manufacturing process and application of an exterior car lamp decorating part. The process comprises the steps that S1, an aluminum plate with a first surface and a second surface which are opposite is provided, a pattern is formed on the first surface or the second surface, and the other surface is coated with glue; s2, the aluminum plate is cut into the size required by the decorating part; s3, the cut aluminum plate is formed into a part shape needed by the decorating part, and a preformed part is obtained; the inner surface of the preform is a gluing surface, and the outer surface of the preform is a pattern surface; s4, injection molding is conducted on the inner surface of the preformed part, and an injection molding base material is formed; and S5, after injection molding, injection molding flash and redundant aluminum plates are removed through milling, and the exterior car lamp decorating part is obtained. The technology is a true aluminum technology with an aluminum sheet as surface decoration, the decoration part manufactured through the technology can be endowed with unique metallic luster and touch sense, the grade of a product and user experience can be remarkably improved, unique experience and luxury sense can be provided in the visual sense and the touch sense, and the vehicle looks more modern and high-end.