26results about How to "Improve fuel efficiency" patented technology

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 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.

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.

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.

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 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.

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 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.

This invention provides a hot-dip galvanized steel sheet with high YR (glucose content), high ductility, elongation flange and bending properties, and improved shear workability, with a TS (strength) of 1180 MPa or higher. The base steel sheet has a specified composition and microstructure, particularly with an aspect ratio of 2.0 or less: the proportion of residual γ (glucose content) exceeds 50%, the number of hardness frequency groups of 0.25 or higher is 1, the area ratio of quenched martensite in the surface layer is 80% or less, the surface softening thickness is 10 μm to 100 μm, and the diffusible hydrogen content in the low-temperature region is 0.015 ppm by mass or less.

The present invention aims to provide a high-strength steel sheet having a TS of 980 MPa or more and excellent ductility, hole expandability, bendability, and hydrogen embrittlement bendability, and a method for manufacturing the same. A high-strength steel sheet having a prescribed composition, a steel structure in which ferrite is 1% or more and 40% or less in area ratio, fresh martensite is less than 1.0%, the sum of bainite and tempered martensite is 40% or more and 90% or less, retained austenite is 6% or more, a value obtained by dividing the average Mn amount (mass%) in the retained austenite by the average Mn amount (mass%) in the ferrite is 1.1 or more, and a value obtained by dividing the average C amount (mass%) in the retained austenite having a length-diameter ratio of 2.0 or more by the average C amount (mass%) in the ferrite is 3.0 or more, and the diffusible hydrogen amount in the steel is 0.3 mass ppm or less.

This utility model discloses a gas distribution structure for a fuel cell stack, relating to the field of fuel cell technology. It includes a stack core and a shell. The bottom of the stack core has a bottom gas distributor and a bottom air distributor, and the top of the stack core has a top gas distributor. The bottom gas distributor and the bottom air distributor are respectively provided with a gas inlet and an air inlet, and the top gas distributor is provided with a gas outlet and an air outlet. An inner cavity and an outer cavity are formed between the stack core and the shell, with the inner cavity communicating with the air outlet. Gas enters through the gas inlet, flows into the stack core through the bottom gas distributor, and then flows out through the gas outlet. Air enters the stack core through the outer cavity, reacts, and then flows out through the air outlet. This utility model improves the gas distribution method, eliminates the need for a gas manifold, reduces the stack volume, and increases the volumetric power density of the fuel cell stack.

The utility model provides a glass fiber board and paper honeycomb board compounded automobile roof assembly, and relates to the technical field of automobile roofs. The glass fiber board and paper honeycomb board compounded automobile roof assembly comprises a paper honeycomb board interlayer, glass fiber board outer layers are fixedly connected to the two sides of the paper honeycomb board interlayer, a textile layer is fixedly connected to one side of one glass fiber board outer layer, a plurality of sets of insertion rods are slidably connected to the interiors of the glass fiber board outer layers, and the insertion rods are fixedly connected to the two sides of the paper honeycomb board interlayer. The surface of the inserting rod is sleeved with a telescopic spring, one end of the inserting rod is fixedly connected with two sets of clamping blocks, one end of the inserting rod is fixedly connected with a rotary knob, and the surface of each clamping block is connected with a socket in a clamped mode. Through the arrangement of the paper honeycomb plate interlayer, the glass fiber plate outer layer, the insertion rods and the telescopic springs, the effect of conveniently installing the automobile roof is achieved, the installation steps are simplified, the automobile roof can be installed without professional tools, and safety, driving comfort and installation convenience are all considered.

This invention relates to hot-stamping steel sheets and methods for manufacturing the same, as well as hot-stamping components and methods for manufacturing the same. The hot-stamping steel sheet of this invention has a predetermined composition and a microstructure comprising ferrite and cementite, wherein the Mn concentration of the ferrite and cementite is set to Mnα and Mnθ, respectively, and the Mnθ / Mnα ratio is 1.4 or higher.

The utility model relates to a kind of passenger car oil tank system and passenger car, belong to passenger car fuel system technical field.Solution main oil tank and auxiliary oil tank are connected to oil tank conversion valve by oil pipe respectively, oil tank conversion valve is connected for the oil supply oil circuit for supplying oil to engine, and oil tank conversion valve is used to select main oil tank or certain auxiliary oil tank to supply oil to engine according to switching signal;Main oil tank and auxiliary oil tank are both provided with the oil quantity sensor connected with whole car instrument, to transmit the oil quantity in corresponding oil tank to whole car instrument;Oil tank conversion valve is also connected with the conversion valve switching control circuit for being connected with whole car instrument, for whole car instrument sends switching signal to oil tank conversion valve according to the oil quantity in corresponding oil tank and sends switching signal to oil tank conversion valve according to the operation of driver.The double-oil-tank system of the utility model cancels large-diameter communication steel pipe, and is convenient for whole car arrangement;It can provide two kinds of oil tank switching methods of manual and automatic simultaneously, meet different user needs, and improve operation convenience.

The present application relates to the technical field of composite materials, in particular to a folded variant lightweight structure and a pleated sandwich structure using the same, the folded variant lightweight structure comprising a flexible layer and a rigid layer fixed on the upper surface of the flexible layer; the rigid layer comprises a plurality of rigid units arranged in an interval array, each rigid unit comprising two parallelogram blocks symmetrically arranged in an interval, and the two parallelogram blocks are arranged in an inverted V shape. The pleated sandwich structure comprises the folded variant lightweight structure, and the upper surface and the lower surface of the folded variant lightweight structure are both fixedly connected with a skin layer. The present application folds the laminated structure composed of the flexible layer and the parallelogram blocks to form a three-dimensional structure with rigid and flexible parts, which has the advantages of high strength and lightweight, and the folding process is simple, the size can be adjusted according to actual needs, and the application flexibility and convenience of the structure are greatly improved.

This application relates to modified silicone rubber, its preparation method, and flame-retardant products. The modified silicone rubber comprises silicone rubber and modified nano-calcium fluoride distributed within the silicone rubber, wherein the modified nano-calcium fluoride includes nano-calcium fluoride modified with a silane coupling agent. The raw materials for preparing the silicone rubber include a first raw material and a second raw material. By mass parts, the first raw material comprises: 40-80 parts of vinyl silicone resin, 30-60 parts of vinyl silicone oil, 10-20 parts of MQ silicone resin without active hydrogen, 1-5 parts of vinyl cage-type polysilsesquioxane, a catalyst, and a first diluent. By mass parts, the second raw material comprises: 10-50 parts of hydrogen-containing silicone oil, 10-20 parts of MQ silicone resin, 0-5 parts of vinyl cage-type polysilsesquioxane without vinyl, an inhibitor, and a second diluent. The modified silicone rubber exhibits both excellent flame-retardant and mechanical properties.

The invention discloses a preparation method of a light-weight low-tensile high-modulus polyester industrial yarn, which comprises the following steps of: tackifying a high-viscosity polyester chip by a solid-phase tackifying device, melting and extruding by a screw extruder, entering a spinning manifold, distributing the melt in the spinning manifold by a spinning component, and pressing into a porous spinneret plate to form a tow, sequentially cooling, oiling, drafting, heat setting and winding to obtain the low-stretch high-modulus polyester industrial yarn. The intrinsic viscosity of the high-viscosity polyester chip is 1.10-1.16 dL / g, the melting point is 257-265 DEG C, the specification of the chip is 2.35 + / -0.50 g / 100, the number of holes of a spinneret plate is 280f, the hole pitch of the spinneret plate is 0.96 cm, and the hole diameter is 0.8-0.99 mm. The industrial yarn produced by the method shows excellent characteristics of light weight, low stretching and high modulus, and completely meets the requirements of high-end rubber framework materials such as radial tires and the like on high-performance fibers.

This invention discloses a vehicle predictive cruise fuel-saving control method, system, device, and storage medium, relating to the field of vehicle fuel-saving technology. The method includes acquiring terrain feature data of the road segment ahead and the current driving state; generating an optimal vehicle speed sequence adapted to the terrain feature data using a preset fuel-saving strategy; maintaining the required output power for the optimal speed sequence using vehicle dynamics constraints; generating an optimal gear adapted to the optimal speed sequence based on the required output power; and controlling vehicle operation based on the optimal speed sequence and optimal gear. The method of this invention reduces fuel consumption and improves fuel efficiency, achieving more economical driving, optimizing energy use, reducing transportation costs and improving transportation efficiency by reducing fuel consumption, and consequently improving economic benefits. For commercial vehicle operators, this can reduce operating costs and increase profits.

This invention provides a pneumatic tire that improves fuel efficiency by reducing air resistance during driving. The pneumatic tire (1) includes: a contact surface (3a) extending from a first contact point (Te1) to a second contact point (Te2), and a first outer surface (6a) extending radially inward from the first contact point. The tread portion (3) has a first shoulder circumferential groove (4A) and a first shoulder land portion (5A) divided by the first shoulder circumferential groove and the first contact point. The tangent of the contact surface at the midpoint (Pm) of the first shoulder land portion in the tire axial direction, i.e., the first imaginary line, has a first angle θ1 of 74-80° relative to the tire radial direction. The tangent of the first outer surface at the first position (P1), i.e., the second imaginary line, has a second angle θ2 of 36-40° relative to the tire radial direction. The radial distance t between the first contact point and the tire equator is 2%-6% of the contact width TW.

The application discloses a process for improving the performance of a excavator and relates to the technical field of excavators. The process comprises the following steps: step S01, starting the engine and making it run at full throttle after preheating and performing digging, soil throwing, walking and lifting operations, detecting and recording the bucket digging force, bucket rod digging force, lifting force and traction force; and step S02, installing a hydraulic system tester on the high-pressure pipeline of the hydraulic pump of a new excavator by using a bypass method, making the pump run at a rated speed, and observing and recording the flow readings of the front and rear pumps of the tester when the hydraulic oil temperature is 50+ / -5 DEG C. The application is a process technology for adjusting the pressure of each working oil cylinder of the main control valve in the hydraulic system of a new or old excavator and the excellent matching of the pump and the engine, fully improves the fuel utilization rate of the engine and the working efficiency and benefit of the whole machine, saves energy and is economical, and can improve and repair the performance and quality of the new or old excavator, such as the digging, crushing, lifting moment and speed.

A structural battery for a vehicle may include a plurality of positive electrode layers, a plurality of electrolyte layers, and a plurality of negative electrode layers stacked in this order from top to bottom, in which the positive electrode layers and the negative electrode layers each include a positive electrode and a negative electrode coated with slurry layers on both surfaces of a carbon fiber current collector layer, respectively, and the carbon fiber current collector layer has a region that extends outward compared to the slurry layer.

The utility model discloses a kind of automobile air cleaner with light weight structure, air filter upper shell, air filter lower shell and filter core;The cavity for accommodating filter core is provided in the air filter lower shell, and part of main body structure of the air filter upper shell, air filter lower shell is made by carbon fiber material compression bonding.The present scheme combines full carbon fiber and traditional air filter case, forms the light weight automobile air cleaner of half carbon fiber type, to solve the problems, such as the weight of traditional air cleaner is big, durability is poor, and the cost of full carbon fiber air cleaner is high, market acceptance is poor.

This application provides a hydraulic clearance adjuster, an engine, and a vehicle. The hydraulic clearance adjuster includes: a housing; at least a portion of a plunger disposed within a first receiving cavity, with an oil drain channel formed between the outer peripheral surface of at least a portion of the plunger and the side wall of the first receiving cavity, and a first working cavity formed between the bottom of the plunger and the bottom of the first receiving cavity, the plunger being movably disposed relative to the housing to change the volume of the first working cavity; a first annular gap formed between the inner ring of a seal and the outer peripheral surface of the plunger, the first annular gap communicating with the first working cavity; a second annular gap formed between the outer ring of the seal and the inner side wall of the housing, the second annular gap communicating with the oil drain channels located on both sides of the seal; and a communicating channel formed on at least one of the seal and the housing, the communicating channel communicating with the oil drain channels located on both sides of the seal. The hydraulic clearance adjuster dynamically adjusts the flow cross-section of the oil drain channel according to the oil pressure, thereby precisely controlling the hydraulic stiffness damping.

The present invention relates to a battery housing for an electric or hybrid vehicle wherein the battery housing comprises the following composition: (A) from 30% to 73.8% by weight of an aliphatic semi-crystalline polyketone consisting of a terpolymer of ethylene, carbon monoxide and a second ethylenically unsaturated hydrocarbon comprising at least three carbon atoms; and (A1) optionally from 0% to 15% by weight of a second thermoplastic, different from polyketones, comprising a polyolefin and / or a polyamide; and (B) 20% to 60% by weight of long glass fibers or long carbon fibers; and (C) 0.1% to 2.0% by weight of an antioxidant; and (D) 0.1% to 2% by weight of a phosphate compound; and (E) optionally from 0% to 3.0% by weight of a colorant; and (F) 6% to 20% by weight of a flame retardant, wherein the total content of components (A) to (F) totals 100% by weight.