43 results about "Small engine" patented technology

The invention provides a small solid engine thrust performance test bench, and belongs to the field of rocket launching ground equipment. The fixed base is fixed to the ground, the linear sliding rail assembly comprises a sliding supporting frame and a sliding rail, and the sliding rail is fixed to the fixed base; the platform is fixed to the top of the sliding supporting frame, and a clamping supporting mechanism is arranged on the platform. The force transmission contact part is fixed at the front end of the sliding support frame; the vertical support frame is fixed at the front end of the base, forms an inverted L-shaped structure with the base and serves as a mounting surface of the thrust sensor; when an engine is ignited, thrust enables the platform and the sliding supporting frame to integrally move towards the thrust sensor along the sliding rail, and when the force transmission contact part collides with the thrust sensor, the thrust sensor outputs a thrust signal. The universality, the reliability and the test precision of the solid rocket engine ground static test system are remarkably improved, and the method is particularly suitable for research and development verification and performance evaluation stages of small and medium-sized engines.

The invention relates to the technical field of high-temperature fire-resistant composite materials, and provides a high-density ablation-resistant rudder heat-proof cup and a manufacturing method thereof.The manufacturing method comprises the steps that 2.5 D quartz fabric is adopted for Z-direction sewing; the sewn fabric is put into a shape maintaining device, and the shape maintaining device adjusts the fiber state of the fabric and improves the fiber volume content to 50-65%; the fabric subjected to shape maintaining operation is firstly impregnated and shaped with inorganic sol and then impregnated and cured with a phenolic aldehyde solution, and a rudder heatproof cup blank is obtained; and finally, machining to obtain the rudder heat-proof cup. The density of the rudder heat-proof cup reaches 1.6 g / cm < 3 > or above, the linear ablation rate on a kerosene small engine is smaller than 0.1 mm / s, and the rudder heat-proof cup is excellent in ablation performance and suitable for thermal protection of a ballistic missile aerial rudder shaft.

A system, method, and formulation or solution used to improve the contents of an engine is provided. More specifically, an integrated or separated system associated with an engine, such as a small engine associated with machinery or a vehicle, helps stabilize the gasoline and onboard fuel system. This can include the fuel tank itself, the carburetor, carburetor components, fuel injection components, and any other components. This prevents damage that can occur to any of these components based on lack of use, for instance during long term storage.

The utility model relates to a small aviation engine propeller fixing structure which comprises a small aviation engine connecting crankshaft and a small aviation engine propeller hub assembling and connecting structure, the small aviation engine propeller hub assembling and connecting structure comprises a propeller pressing conical head and a propeller hub body, and a self-locking assembly is connected between the propeller conical head and the propeller hub body. The small aviation engine connecting crankshaft comprises a crankshaft cylinder, an inner connecting end arranged at the front end of the crankshaft cylinder and a crankshaft block structure arranged at the rear end of the crankshaft cylinder, and the inner connecting end is connected with a key slot hole formed in the rear end of a propeller hub body. By the adoption of the propeller fixing structure, the phenomena that stress is not uniform, propeller mounting holes are damaged, propeller mounting faces are crushed and the like when propeller mounting bolts are screwed down can be effectively avoided, and meanwhile the problem that stress is not uniform when an engine runs at a high rotating speed is solved. Propeller damage is reduced, the service life of propellers is prolonged, and enterprise development cost is reduced. Meanwhile, the structure is simple, operation is convenient, arrangement is compact, and machining is easy.

A start mechanism for a propulsion system including a receptacle; at least one portable source of energy disposed within the receptacle; a flow channel fluidly coupled to the receptacle; and a combustion section within the case, the combustion section fluidly coupled to the flow channel; wherein the at least one portable source of energy is configured to produce at least one of electrical energy and a source of chemical energy.

The invention discloses a test device for measuring thrust of a small engine, and relates to the technical field of visual inspection in the automobile industry. In order to solve the technical problems in the prior art that the detection precision of the conventional method on the hole shrinkage defect is low and the detection reliability is influenced, the technical scheme provided by the invention is as follows: the device comprises an image reference selection module for selecting a plurality of images with different angles as reference images; the image restoration module is used for carrying out denoising processing on the reference image; the perspective transformation module is used for setting an area where diameter shrinkage may occur according to a design drawing and processing technology information of the sheet metal part and realizing automatic alignment of the detection area; the extraction module is used for carrying out multi-scale extraction and frequency domain analysis on the image; and the defect decision-making module is used for carrying out final decision-making on the hole shrinkage defect based on the gradient intensity, the area and the shape characteristics of the hole shrinkage area. The device is suitable for detecting the hole shrinkage of the sheet metal part.

The utility model discloses an engine oil cooler assembly for integrally monitoring engine oil pressure and temperature, and belongs to the technical field of engine oil cooling assemblies. The sensor is installed on the bottom plate, the bottom chip is welded to the bottom plate, the ten fins and the nine chips are sequentially and alternately stacked and welded to the bottom chip from bottom to top, the top plate is welded to the fin on the uppermost layer, the water inlet pipe and the water outlet pipe are welded to the top plate, an oil inlet and an oil outlet are formed in the lower end of the bottom plate, and the sensor is in signal connection with an engine control unit. The sensor is a temperature and pressure integrated sensor. An integrated sensor monitoring mode is adopted, damage to the interior of the cooler caused by abnormal pressure and temperature is effectively avoided, the space utilization rate is optimized, the sensor is integrated on the engine oil cooler, and the reliability and accuracy of an engine oil pressure and temperature monitoring system are improved; the problem that lubricating oil film establishment cannot be met due to too small engine oil viscosity caused by too high engine oil temperature is solved, the potential leakage risk is reduced, and weight reduction and space utilization rate optimization are facilitated.

In order to solve the problems that the existing transmission shaft torque detection bench cannot meet the small engine crankshaft monitoring and cannot carry out long-term real-time monitoring, the present application provides a small engine crankshaft torque real-time monitoring device and method.The small engine crankshaft torque real-time monitoring device comprises a strain gauge, a controller, a micro generator and a data receiving unit; the strain gauge is attached to the surface of the crankshaft on either side of the engine pulley; the controller is fixed on the side of the engine pulley and comprises a signal processing module, a transmitting module, a power module, a storage battery and a wifi module; and the micro generator is integrally installed on the inner side of the crankshaft end bearing.The present application has the beneficial technical effect that the torque of the small engine crankshaft under different load conditions can be monitored in real time, and the torque of the small engine crankshaft in actual operation can be monitored in real time for a long time.

The utility model provides a hybrid power system which is characterized in that the system comprises an engine (1), and an output shaft of the engine is connected with a shock absorber (2); the other end of the shock absorber (2) is connected with a main clutch (3); the other end of the main clutch (3) is connected with a motor (4); the output end of the motor (4) is connected with an output load (OUT), and the motor can serve as a driving motor and can also serve as a power generation motor; the main clutch can be selectively connected or disconnected to achieve the corresponding working modes of engine independent driving, motor independent driving, engine and motor hybrid driving and engine driving and motor power generation. The power performance is excellent, double-power-source cooperation can be achieved (when high power is needed), smaller engines can be selected, cost is reduced, and power output is efficient.

The invention provides a power management method which is applied to a power management module of a small engine system, and the power management module is arranged in an engine chip and used for controlling the working mode of the engine chip. The method comprises the steps that when a key signal is represented as a power-on state, a power management module is configured to be in a power-on mode so as to control an engine chip to enter a normal working mode, and when the chip enters the normal working mode, the power management module is configured to be in a locked power-on mode through an SPI channel, the engine chip can still be kept in the normal working mode within the threshold duration after the key signal is represented to be in the power-off state, and a small engine system can complete idling stepping motor reset operation and data processing operation. Therefore, it is guaranteed that the small engine system completes key operation after the ignition switch flames out, the reliability is good, and the complexity degree is low.

A system and method for dispensing fluid from a reservoir cleanly using compression and negative pressure is disclosed. The system (herein referred to as ‘System”) is essentially comprised of a nozzle and a portable fluid jug (herein referred to as a ‘reservoir’). Two embodiments have a nozzle with a compression portion that when pushed against a tank neck allows fluid to flow from the reservoir. When the tank is full, fluid reaches the nozzle and blocks an internal vent line within the nozzle. This blockage builds negative pressure inside the reservoir, subsequently halting the flow of fluid through the nozzle. An object of the System is to allow fluid to flow quickly and cleanly into a fluid tank (such as those on vehicles, motor cycles, small engines, etc.) Other objects, details and embodiments of the System will be examined in further sections of this disclosure.

A power control system and method for managing power usage in a pipe fusion apparatus wherein the system and method prevent the engine of the apparatus from stalling in overload conditions, even when using a fusion heater configured for heating pipes over the entire OD fusion range of the fusion apparatus, so that a smaller engine of optimum size can be used.

The present invention relates to a small engine-driven electric charging device. The technical problem to be solved is to provide a small engine-driven electric charging device capable of charging the battery not only while the electric vehicle is driving but also while the electric vehicle is parked or stopped, by installing a separate small engine in the electric vehicle so that the small engine drives a main motor and the main motor drives a plurality of generators. To this end, the present invention comprises: a small engine having an displacement of 20cc to 200cc; a main motor including a motor rotating shaft coupled to the small engine and a motor spur gear coupled to the motor rotating shaft; and a motor rotational force transmission unit including a first driven spur gear meshed to the motor spur gear of the main motor, a driven shaft coupled through the first driven spur gear, and a plurality of second driven spur gears coupled to the driven shaft. A small engine-driven electric charging device is provided, comprising: a plurality of generator modules each coupled to a plurality of second driven spur gears provided in the motor rotational force transmission unit; wherein each of the plurality of generator modules includes a first generator including a first generator tooth gear connected to the second driven spur gear via a first chain and a first generator rotation shaft coupled to the first generator tooth gear, and a second generator including a second generator tooth gear connected to the first generator tooth gear via a second chain and a second generator rotation shaft coupled to the second generator tooth gear; and an electric vehicle battery pack electrically connected to and charged to the plurality of generator modules.

The invention relates to the technical field of machining, and discloses a multi-process combined machining device for a small engine shell, which comprises a positioning tool, a connector and a transmission component, the connector is fixedly mounted on a hydraulic three-jaw chuck, the connector and the hydraulic three-jaw chuck are coaxially arranged, a mounting notch is formed in the end part of the connector, and the transmission component is arranged in the mounting notch. The positioning tool is rotatably mounted in the mounting notch, a turnover oil cylinder and a positioning oil cylinder are arranged on the connector, the turnover oil cylinder drives the positioning tool to turn over according to a fixed angle, and the positioning oil cylinder limits the turnover angle of the positioning tool; according to the multi-procedure combined machining equipment, the clamping function of the hydraulic three-jaw chuck is utilized, power for driving the positioning tool to turn over and limit is provided for the connector, the effect of automatically switching machining faces is achieved, and conditions are provided for machining such as turning, drilling, tapping, chamfering and deburring of the two ends of a workpiece to be machined.

The application discloses an engine thrust measuring device and method suitable for a small test bed and belongs to the technical field of engine thrust measurement. The device comprises a clamping test mechanism, a plurality of groups of symmetrically distributed T-shaped connecting rods are arranged on the clamping test mechanism, the T-shaped connecting rods are provided with T-shaped clamping pieces, the T-shaped clamping pieces and I-shaped clamping pieces installed thereon are used for clamping engine assemblies in cooperation, the engine assemblies comprise first engine assemblies and second engine assemblies, the engine flanges of the second engine assemblies are clamped between the T-shaped clamping pieces and the I-shaped clamping pieces, and pressure sensors are arranged between the engine flanges and the I-shaped clamping pieces; and a leveling mechanism is connected to the tail end of the clamping test mechanism. The device can make the engine thrust, the initial friction and the tension of the leveling mechanism be on the same horizontal axis, realize self-balancing of a thrust measurement force system, eliminate measurement deviation caused by torque and non-axial friction, improve measurement accuracy and solve the problem of low accuracy of small engine thrust measurement.

An air intake assembly for a small engine includes a plenum housing defining an internal volume; a first intake runner coupled to the plenum housing and extending between a first cylinder end and a first plenum end, and a second intake runner coupled to the plenum housing and extending between a second cylinder end and a second plenum end. A portion of the first intake runner extends into the plenum housing by a first extension distance so that the first plenum end is arranged within the internal volume. A portion of the second intake runner extends into the plenum housing by a second extension distance so that the second plenum end is arranged within the internal volume.

The invention relates to a two-stage oil-gas separation dynamic pressure type oil-gas separator which comprises a wake flow separator used for first-time gas-oil separation and a dynamic pressure type oil-gas separator used for second-time gas-oil separation, and the wake flow separator is arranged on an oil return pipe corresponding to an oil return opening of the dynamic pressure type oil-gas separator; the invention further discloses a secondary oil-gas separation method of the dynamic pressure type oil-gas separator for two-stage oil-gas separation. The secondary oil-gas separation method specifically comprises a two-stage oil-gas separation process and a wake flow separator oil-gas separation process. Aiming at the problems that a dynamic pressure type oil-gas separator used by a small engine is not high in efficiency and cannot guarantee effective separation of lubricating oil and air, the invention provides the oil-gas separator and the separation method which are subjected to two-time oil-gas separation, so that the separation efficiency of the oil-gas separator is effectively improved, and the oil-gas separator has a relatively good engineering application value.

The utility model belongs to the field of vehicle auxiliary drive device, specifically is a right gear combination support of engine, including connecting assembly, fixed component, adjusting assembly, fender handle assembly, transmission rod subassembly and small -size engine, connecting assembly contains fixed frame axle, first / second connecting plate and clamping groove, fender handle assembly passes through protruding piece and clamping groove and inserts joint transmission operating force, the sleeve of fixed component is connected fixed frame axle, adjusting assembly realizes the stepless fine adjustment of installation angle and height through bolt and thread sleeve cooperation, transmission rod subassembly adopts double fish eye joint bearing connecting pin and engine gear shifting and shifts the piece. The utility model improves the installation versatility, eliminates the transmission slip of operating force, absorbs the deviation and vibration to prolong the life, and adjusts simple and easy precision, is applicable to motorcycle, agricultural machinery and so on small -size engine gear shifting system.

A power control system and method for managing power usage in a pipe fusion apparatus wherein the system and method prevent the engine of the apparatus from stalling in overload conditions, even when using a fusion heater configured for heating pipes over the entire OD fusion range of the fusion apparatus, so that a smaller engine of optimum size can be used.

The present application relates to a kind of mobile rotary table type small engine tail jet's infrared test system, including the engine or nozzle being arranged on the rotating platform of rotary table system, rotary table system is used to drive the engine or nozzle to be measured to carry out 0~360 ° rotation in horizontal plane;It also includes thermal imager and control system;When the device to be measured is nozzle, then also include adjustable outer channel cooling air blower and outer channel gas collecting pipeline for providing.This application also provides the test method that the system can be realized.This application solves the key problems that traditional large fixed test bed is high in cost, not flexible, and existing ground test means cannot consider multi-angle automatic measurement, high-precision data acquisition and convenient deployment, realizes the highly efficient infrared radiation characteristic test system and method that height integration mobility, full-angle automatic measurement, extensive test function, high-precision data guarantee and operation safety automation are integrated.

The invention belongs to the technical field of solid rocket engines, and particularly relates to a small engine spray plug assembly tool which comprises a long and thin cylinder (1) and a protrusion (2) arranged at one end of the long and thin cylinder (1). The bulge (2) is a cylinder coaxial with the slender cylinder (1); the outer diameter of the protrusion (2) is matched with the inner diameter of the spraying and blocking groove (3), and the length of the protrusion (2) is larger than or equal to that of the spraying and blocking groove (3). According to the tool, the spray plug can be stably installed in the spray pipe, the coaxiality of the spray plug and the spray pipe is guaranteed, and the foam spray plug is not damaged.

According to the solid rocket engine ignition model calibration method, an ignition model based on net heat flow is established, and the specific heat absorption capacity is determined by using test and parameter identification means, so that the influence of the grid scale in the conventional ignition model is avoided. In the parameter calibration process, firstly, a small engine similar to an engine to be simulated is designed, it is ensured that the small engine and the engine to be simulated have the same free parameters to be calibrated through theoretical analysis, under the guidance of a parameter calibration optimization algorithm, the performance prediction process is repeatedly executed, and the free parameters to be calibrated are adjusted in each execution performance prediction process. And the calibration result converges.

The utility model relates to the technical field of engine parts, in particular to a cylinder head, which comprises a main body and an improved cylinder body structure, the improved cylinder body structure comprises an air inlet, an air outlet, a vertical mounting hole and a cavity, the air inlet is fixedly connected with the main body and is positioned at the upper part in the main body, the air outlet is fixedly connected with the main body and is positioned at the upper part in the main body, and the vertical mounting hole is positioned in the cavity. The air inlet is formed in one side of the main body, the exhaust port is further formed in one side of the air inlet, the vertical mounting hole is fixedly connected with the main body and located in the main body, and the cavity is fixedly connected with the main body and located in the center of the interior of the main body. Therefore, the problems of low combustion efficiency caused by unreasonable gas port layout, easy overheating damage of the engine caused by insufficient heat dissipation performance and gas leakage caused by poor sealing performance in the existing small engine cylinder head design are positively and effectively solved while the original beneficial effects are retained.

The present application provides a small engine casing assembly device, belonging to the technical field of engine assembly. The small engine casing assembly device includes a casing assembly. The telescopic rod of the first cylinder is fixedly connected to one end of the movable tray, and the movable pressing plate is movably sleeved on the guiding column and fixedly connected to the top of the telescopic rod of the second cylinder. By setting the movable pressing plate and the movable tray that adopt pneumatic operation, the moving tray can move back and forth on the horizontal plane under the action of the cylinder, meeting the requirement that the working position is outside the top cover plate when placing parts, which is convenient for operation. After the moving tray and the workpiece move backward in place, the pressing operation is carried out, enabling the matching end of the cylinder head main shaft and the engine casing to be quickly aligned, greatly improving the assembly efficiency. By adjusting the telescopic speed of the cylinder telescopic rod, the speed of workpiece movement and the descent of the pressing head can be adjusted, with high assembly precision, and it can meet the pressing of internal parts of the UAV56 casing assembly.

This invention relates to the field of engine technology and discloses a high thermal efficiency, large-angle engine assembly, including a gasoline engine body, an intake manifold assembly, a throttle body assembly, dual injection rails, an exhaust manifold assembly, an EGR cooler, a water pump assembly, an EGR system, a cooling system, a bypass cooling system, and a front-end wheel train. The EGR system includes an EGR pipe assembly, an EGR valve, an EGR cooler, an EGR temperature sensor, and an EGR intake pipe. The gasoline engine body is arranged at an angle of 45°–60°. In this invention, the engine adopts an overall layout structure with a large tilt angle of 45°–60°. By employing advanced technologies such as dual-port injection, centrally located DVVT, an oil cooler, a cooled EGR, and an integrated exhaust manifold in the cylinder head, combined with multiple friction-reducing technologies such as DLC-coated tappets, the engine's thermal efficiency is improved, and its fuel consumption is reduced. Furthermore, by optimizing the layout and compacting the component design, the engine's overall dimensions are reduced, effectively solving the problem of insufficient space in small engine compartments.

A structural arrangement for a motorcycle helmet the protective shell of which has a recessed cavity in the upper portion forming protrusions, each protrusion having a space for the rack, and an opening; a front cavity receives a rear fairing and has a second lowered cavit with an opening between the protective hull and the internal hull, on the edges of the visors is fastened a rack with teeth actuated by a small engine with gear strategically arranged in each of the outlets of the protrusions, in the protective hull and on one end of the rack, with actuation by buttons on the helmet or devices with electronic controls by means of radio signals, installed both on the helmet and on the motorcycle or even by remote control, and power is supplied by a battery.

A multi-directional thrust measuring device for a small engine comprises a base, a polished rod, two hoops and a thrust sensor, and one end of the base is upwards and vertically bent to form a vertical plate; the number of the polished rods is two, the polished rods are fixed to the base side by side, and the two ends of each polished rod are each connected with a sliding block in a sliding mode. The two hoops coaxially sleeve two ends of a to-be-tested engine and are used for supporting the to-be-tested engine from two ends; the hoop is fixedly connected with the two sliding blocks at the same end; the thrust sensor is used for measuring thrust of a to-be-tested engine after ignition, and during testing, one end of the thrust sensor is fixed with the vertical plate at one end of the base, and the other end of the thrust sensor abuts against the center of one end of the to-be-tested engine through the adapter. The device is small in frictional resistance, can accurately measure tiny thrust, can change the installation direction of the device, and measures the thrust of an engine when the engine works in different directions.

The utility model discloses a photovoltaic station electric saw weeding machine which comprises a protective shell, a speed reducer is mounted in the protective shell, a handheld support is fixed to one side of the protective shell, a mounting plate is fixed to the handheld support, and a small engine is mounted on the mounting plate; an output shaft of the small engine penetrates through the mounting plate and the protective shell and is connected with the speed reducer, rotating rollers are installed at the two ends of the speed reducer, a plurality of soil turning cutters are installed on the rotating rollers, two rotating shafts are installed between the protective shell and the mounting plate, chain wheels are installed on the two rotating shafts and the output shaft, and the chain wheels are connected with the speed reducer. And the chain wheels are connected through a chain. According to the device, the weeds are harvested firstly, the roots of the weeds are damaged in the harvesting process, regrowth of the weeds can be well inhibited, the harvesting efficiency is high through the structure of the saw blade, the edge operation of the saw blade does not exceed the side of the protective shell, and therefore the saw blade can be protected.

and a tube connecting the discharging opening of the oil drain plug, wherein the tube has a check valve in it and is closed by the pump , and the tube which connects the pump to the oil drain plug, and the pump is closed by the pump .

A small engine starter device for automatically starting a small engine includes a flywheel gear which is attachable to a flywheel of a small engine in place of a pull start mechanism that has been removed from the flywheel. A starter is mountable to the small engine such that the starter surrounds the flywheel gear. The starter is actuatable into a starting condition such that the starter engages the flywheel gear. Additionally, the starter rotates the flywheel gear when the starter is actuated into the starting condition thereby enabling the starter to start the small engine. The starter has a battery socket for receiving a battery of a cordless power tool thereby enabling the starter to be powered by the battery of the cordless power tool.