29 results about "Four-stroke engine" patented technology

1. Name of the Design Product: Four-stroke Engine (G139F-3H). 2. Use of the Design Product: A four-stroke engine for use in conjunction with garden and agricultural machinery such as lawn mowers and brush cutters. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photograph that Best Illustrates the Design Key Points: Perspective View 1.

This invention proposes a lubricating oil composition for a four-stroke engine specifically designed for unmanned aerial vehicles (UAVs) and its preparation method. The lubricating oil composition for a four-stroke engine of this invention comprises the following components: (A) a nitrogen-containing organoboron compound; (B) an alkyl diphenylamine; (C) polyisobutylene succinimide; (D) sulfonates and / or sulfurized alkylphenol salts; (E) zinc dialkyl dithiophosphate; (F) dialkyl dithiocarbamate; (G) polymethyl methacrylate; and (H) a base oil in a major amount. The structure of the nitrogen-containing organoboron compound is shown in formula (I) and / or formula (II), with the definitions of each group provided in the specification. The lubricating oil composition for a four-stroke UAV engine of this invention exhibits excellent extreme pressure anti-wear, anti-oxidation, and detergency properties, effectively suppressing the increased wear caused by the high power-to-weight ratio and harsh lubrication conditions of four-stroke UAV engines.

1. Name of this design product: Four-stroke engine (G135F‑1B). 2. Application of this design product: A four-stroke engine used in conjunction with lawn mowers, grass trimmers and other garden and agricultural machinery. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1.

The utility model relates to the technical field of marine engines, and discloses a variable valve timing and lifting device of a marine four-stroke engine, which comprises a rocker arm and a cam, a shaft hole connected with a fixed rotating shaft is arranged at one end of the rocker arm, a driving ring is arranged between the fixed rotating shaft and the rocker arm, and a step groove is arranged in the middle of the rocker arm. A step groove is formed in the rocker arm, a roller control arm is arranged in the step groove, a roller is arranged in the roller control arm, the roller control arm is connected with the driving ring, the driving ring can drive the roller control arm to move back and forth in the step groove, and the cam is located above the rocker arm and makes contact with the roller in the step groove of the rocker arm. The driving device is additionally arranged on the roller on the rocker arm of the valve mechanism of the four-stroke engine, so that the position of the roller relative to the cam is variable, the function that the phase of the valve mechanism of the engine is variable is achieved, the output characteristic of the engine can be effectively improved, the fuel economy is improved, and the system is simple and compact in structure and convenient to maintain.

The present invention relates to a method for controlling a five-stroke engine (2) of a vehicle (1), comprising the implementation by data processing means (11) of a computer (10) of steps of: Receiving, from a sensor (3) equipping the vehicle (1), a value of at least a first operating parameter of the five-stroke engine (2); Determining optimized values ​​of at least a second operating parameter of the five-stroke engine (2), using a simulation model of a four-stroke engine (2') calculating the values ​​of at least one parameter representative of the performance of said simulated four-stroke engine (2') as a function of the values ​​of said operating parameters, in which, for each connecting rod (21) of the five-stroke engine (2), the simulated four-stroke engine (2') includes a corresponding virtual connecting rod (21') having a variable length so as to reproduce the operation of the five-stroke engine (2);Application of the determined value(s) of the second operating parameter(s) of said five-stroke engine (2). [Fig. 1a];

The embodiments described herein provide a system and method for using an integrated starter generator (ISG) for electric torque assistance in specific strokes of a 2-stroke or 4-stroke internal combustion (IC) engine (300) with reduced inertial mass compared to a conventional IC engine with inertial mass loading. This is intended to overcome a speed variation problem caused by the engine's lower inertia at low speeds and idle, thus compensating for the crankshaft's lower speed. Furthermore, allowing the 2-stroke and 4-stroke engines to operate with a lean fuel-air mixture improves emissions at low speeds and idle, leading to better control of IC engine emissions.

A throttle-type four-stroke engine (100) that has the following features: at least one combustion chamber (13); an inlet channel (21) with one end (17) connected to a combustion chamber (13) and the other end (21a) not connected to the combustion chamber (13); a throttle valve (33) which is provided inside the inlet channel (21) and is configured to adjust the amount of air drawn into the combustion chamber (13); a throttle valve position detector (42) that detects a position of the throttle valve (33); an inlet pressure detector (43) that detects an inlet pressure in the inlet channel (21) between the throttle valve (33) and the combustion chamber (13); a fuel supply device (50) configured to supply fuel to the combustion chamber (13); and a control device (60) configured to control the fuel supply device (50) according to signals from the throttle valve position detector (42) and the inlet pressure detector (43), wherein, if four strokes, defined by a piston position and comprising an intake stroke as the start stroke, a compression stroke, an expansion stroke and an exhaust stroke as the final stroke, are defined as a combustion cycle, the control device (60) is further configured in at least part of a low-load operating period, when a signal from the inlet pressure detector (43) fluctuates significantly in the combustion cycle, to estimate the amount of air drawn into the combustion chamber (13) within one combustion cycle or to determine the required amount of fuel for the next combustion cycle, according to: the inlet pressure in the compression stroke, which is recorded in the compression stroke where the inlet pressure shows an increasing tendency; the position of the throttle valve in the compression stroke, which is detected in the compression stroke; and a subsequent position of the throttle valve, which is detected at a time in the same combustion cycle and after a time when the position of the throttle valve is detected in the compression stroke, and when the intake pressure is higher than the intake pressure at the time when the position of the throttle valve is detected in the compression stroke, and to control the fuel supply device (50) to supply fuel prior to combustion in the next combustion cycle based on the estimated amount of air or the determined required amount of fuel.

The invention discloses an air inlet channel oil film generation characteristic adjusting device and method for a rotor engine, the air inlet channel oil film generation characteristic adjusting device comprises a driving module and an execution module, the driving module is internally provided with a steering engine and a microcontroller, and the execution module is composed of a fuel spray impact unit, a universal movement assembly and a fixed support; the universal assembly comprises a short rotating shaft, a circular ring universal shaft and a long rotating shaft, and multi-shaft rotation can be achieved. And the steering engine drives the long rotating shaft to rotate, so that the spraying impact unit is matched with the fixed support through the bevel notch to complete unfolding and folding switching. The device integrated ceramic heating element is used for oil film evaporation control. According to the scheme, the spraying direction and the oil film generation state can be dynamically adjusted according to the working condition of the engine, so that the valveless rotor engine obtains the capability of controlling the quality of an oil film in an air inlet channel according to a valve opening or closing injection strategy of an air inlet channel injection type four-stroke engine, and the combustion efficiency and the emission performance are improved.

The utility model relates to a cavity structure core box based on a ship four-stroke engine, and belongs to the technical field of ship large-cylinder-diameter medium-speed four-stroke engines. The air inlet valve seat ring and the exhaust valve seat ring are arranged at the bottom of the core box shell, the air valve mechanism penetrates through the core box shell and is matched with the air inlet valve seat ring and the exhaust valve seat ring, and the air inlet channel and the exhaust channel are arranged in the core box shell and are connected with the air inlet valve seat ring and the exhaust valve seat ring respectively. The top of the core box shell and the air valve mechanism are connected with an air valve spring pressing mechanism; a plurality of hollow cavities which are not communicated are formed in the core box shell, the hollow cavities are connected through reinforcing ribs, and preset distances are reserved between the hollow cavities and the air inlet channel and between the hollow cavities and the air outlet channel. By arranging the hollow cavity and the reinforcing rib structure, the weight is effectively reduced, and the structural stability is ensured; an integral processing structure is adopted, so that the assembly complexity is reduced; the air passage test of engines with different cylinder diameters is realized through a principle of similar structure and flow.

The four-stroke engine comprises an oil chamber, a crankshaft chamber and an oil conveying channel, the crankshaft chamber comprises an upper shell and a lower shell, the oil conveying channel comprises an oil inlet pipeline and an oil outlet pipeline, the oil inlet pipeline is used for conveying oil in the oil chamber into the crankshaft chamber, and the oil outlet pipeline is used for conveying oil in the crankshaft chamber into the crankshaft chamber. The oil outlet pipeline is used for conveying oil in a crankshaft chamber to a timing gear meshing position until a valve chamber, a one-way valve is arranged at the oil outlet pipeline and used for controlling opening and closing of the oil outlet pipeline, the one-way valve comprises a sleeve part, a valve body and a connecting copper pipe, the sleeve part is embedded into the lower shell, the valve body is inserted into the sleeve part in an interference mode, and the valve body is connected with the valve body through the connecting copper pipe. And the connecting copper pipe is connected with the valve body and extends to the bottom position of the lower shell.

A double-circulation high-power engine is characterized in that an engine piston is designed into double layers which are overlapped together, a lower-layer piston is a main moving piston, an upper-layer piston is an air suction and exhaust piston, and the upper-layer air suction and exhaust piston slides through a positioning sliding rod and a positioning guide pipe in the center of the main moving piston and can be separated from the lower-layer main moving piston to do up-down relative movement; a through conical round hole is formed in the air suction and exhaust piston, and a conical cover plate capable of moving upwards is arranged on the conical round hole; a main movement piston rotates one circle on a crank arm to complete circulation of a compression stroke and a power stroke, an air suction and exhaust piston moves upwards with the help of a separation executing mechanism when the crank arm of the main movement piston rotates to the range of 155 degrees to 205 degrees to complete circulation of the two strokes of air suction and air exhaust, and therefore the circulation of four strokes is actually completed. And the oil-saving effect of a four-stroke engine is also achieved, and the power is doubled.

The invention relates to the technical field of engines, and particularly discloses a novel two-stroke engine which comprises an oil pan, an oil cylinder and a piston. An air cylinder is installed at the top end of the oil pan, air inlet and outlet mechanisms are installed in the middles of the two ends of the air cylinder in an embedded mode, a cylinder cover is installed at the top end of the air cylinder, and a lubricating mechanism is installed on the outer wall of the oil pan. Through cooperative work of the intake and exhaust passage, the intake and exhaust hole, the intake and exhaust valve, the limiting groove and the limiting block, opening or closing of a gas passage is achieved by rotating the intake and exhaust valve, gasoline is directly injected, so that the engine does not need to combust mixed gas, emission is reduced, and the problem of emission pollution caused by mixed gas combustion of a traditional two-stroke engine is effectively solved; meanwhile, according to the design, the air-fuel ratio can be accurately regulated and controlled, mixed gas short circuit and unburned HC emission are reduced, the environment-friendly performance and combustion efficiency of the engine are improved, the two-stroke engine is longer in service life, and compared with a four-stroke engine, the two-stroke engine is lighter in dead weight, low in production cost and more suitable for hybrid power vehicle types.

The invention belongs to the technical field of engines, and particularly discloses an engine cylinder block structure and an operation method thereof, an engine and a vehicle, the engine cylinder block structure comprises a first cylinder and a second cylinder, a first piston is slidably connected in the first cylinder in the axial direction, and a second piston is slidably connected in the second cylinder in the axial direction; the driving assembly is used for driving the first piston and the second piston to slide; the first cylinder is provided with a sealable first air inlet hole and a sealable first air outlet hole, the second cylinder is provided with a sealable second air inlet hole and a sealable second air outlet hole, and the device further comprises a communicating assembly used for communicating the first air outlet hole with the second air inlet hole; the volume of the first cylinder is larger than that of the second cylinder. By the adoption of the scheme, the advantages of a two-stroke engine and a four-stroke engine can be integrated, the variable compression ratio is achieved, the homogeneous compression ignition acting mode of the engine is achieved, and the heat efficiency and acting efficiency of the engine are improved.

The invention relates to an engine, in particular to a crankshaft-free single-machine double-cylinder three-piston type engine. In the technical field of engines, a traditional four-stroke engine takes the dominant position at present. The invention has the technical characteristics that a single cylinder only works once when rotating 720 degrees; the crankshaft-free single-machine double-cylinder three-piston type engine rotates by 720 degrees to do work for 12 times, and the work is 12 times that of a traditional four-stroke internal combustion engine. The engine specifically comprises an engine body, a left engine cover, a right engine cover, a spoke of a circular structure and a piston. And a body. The structure is very simple, and the development work of only several main components is very simple. Operation is stable and noise is low. The size and the weight are low. The technical advantage of the project is that the internal combustion engine has a much larger S / D ratio than a traditional internal combustion engine, and great energy-saving potential is provided for the project.

A vehicle having a framework; at least two or more wheels, the at least two or more wheels are into engagement with the framework; a seat engaged with the framework; a four (4) stroke engine; an electric drive system, wherein the electric drive system is configured to propel the vehicle by itself or in tandem with the four (4) stroke engine; at least one or more batteries that is configured to provide power to the electric drive system; at least one or more solar panels, and wherein the solar power device is configured to power the electric drive system and / or charge the at least one or more batteries. The SSR1 Rocket Autocycle includes a 100-amp alternator which is connected to a Drivetrain and charges all battery components on the vehicle when needed and in motion.

The present invention discloses a lubricating device for a four-stroke engine, and relates to the technical field of engine lubrication. Specifically, the lubricating device comprises a cylinder block, a piston block is mounted on one side of the cylinder block, a crankshaft connecting rod is connected below the piston block, and closed bearings are mounted on both sides of the crankshaft connecting rod. The lubricating device for the four-stroke engine achieves reasonable distribution of lubricating oil according to the required concentration in the crank chamber, cam chamber, and valve timing chamber by setting a lubricating oil path and regulating the pressure. The pressure gradients in the crank chamber, oil distribution chamber, cam chamber, and valve timing chamber are throttled and regulated by setting oil paths to achieve directional movement of lubricating oil or oil mist and change the supply amount according to the different speeds of the four-stroke engine. That is, when the four-stroke engine is operating normally, the concentrations of lubricating oil required in the crank chamber, oil distribution chamber, cam chamber, and valve timing chamber are reduced in sequence.

1. Name of the Design Product: Four-stroke Engine (G143F-1C). 2. Use of the Design Product: A four-stroke engine for use in conjunction with garden and agricultural machinery such as lawn mowers and brush cutters. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photograph that Best Illustrates the Design Key Points: Perspective View 1.

Four Stroke Engine Housing

Embodiments herein provide a system and method for using an Integrated Starter Generator (ISG) for electric torque assistance on specific strokes of a 2-stroke or 4-stroke Internal Combustion (IC) engine (300) with reduced inertial mass than a conventional inertial mass loaded IC engine in order to overcome a speed variation problem caused by the engine's lower inertia at low and idle speeds and thus meeting a crankshaft speed shortfall. Furthermore, enabling the 2-stroke and 4-stroke engines to run on a lean fuel-air mixture improves emissions at low and idling speeds, and leads to better IC engine emission control.

The invention discloses a device and a method for realizing a ship energy efficiency index by a ship four-stroke engine, relates to the technical field of ship energy efficiency management, and solves the problem that an EPL system in the prior art cannot be flexibly adjusted and quickly responded according to actual requirements of a ship when necessary. Comprising a high-pressure oil pump, the high-pressure oil pump is connected with an oil adjusting shaft, the oil adjusting shaft can accurately control the fuel injection amount of the high-pressure oil pump, and an oil adjusting shaft rocker arm is installed on the oil adjusting shaft; the oil adjusting shaft rocker arm is rotatably connected to the cover plate, the cover plate is connected with an oil mass control valve corresponding to the oil adjusting shaft rocker arm, the oil mass control valve comprises a piston, the oil mass control valve is communicated with a compressed air storage tank through an electromagnetic valve, and the electromagnetic valve is electrically connected with a switch; and the cover plate is connected with a limiting block. The method has the advantages that time and labor are saved, EPL setting can be flexibly adjusted according to actual requirements of the ship, and quick response and support are provided when necessary.

A vehicle having a framework; at least two or more wheels, the at least two or more wheels are into engagement with the framework; a seat engaged with the framework; a four (4) stroke engine; an electric drive system, wherein the electric drive system is configured to propel the vehicle by itself or in tandem with the four (4) stroke engine; at least one or more batteries that is configured to provide power to the electric drive system; at least one or more solar panels, and wherein the solar power device is configured to power the electric drive system and / or charge the at least one or more batteries. The SSR1 Rocket Autocycle includes a 100-amp alternator which is connected to a Drivetrain and charges all battery components on the vehicle when needed and in motion.

The invention relates to a cavity structure core box based on a ship four-stroke engine, and belongs to the technical field of ship large-cylinder-diameter medium-speed four-stroke engines. The air inlet valve seat ring and the exhaust valve seat ring are arranged at the bottom of the core box shell, the air valve mechanism penetrates through the core box shell and is matched with the air inlet valve seat ring and the exhaust valve seat ring, and the air inlet channel and the exhaust channel are arranged in the core box shell and are connected with the air inlet valve seat ring and the exhaust valve seat ring respectively. The top of the core box shell and the air valve mechanism are connected with an air valve spring pressing mechanism; a plurality of hollow cavities which are not communicated are formed in the core box shell, the hollow cavities are connected through reinforcing ribs, and preset distances are reserved between the hollow cavities and the air inlet channel and between the hollow cavities and the air outlet channel. By arranging the hollow cavity and the reinforcing rib structure, the weight is effectively reduced, and the structural stability is ensured; an integral processing structure is adopted, so that the assembly complexity is reduced; the air passage test of engines with different cylinder diameters is realized through a principle of similar structure and flow.

To provide a new standard governor capable of optimizing ignition timing after start of an engine and improving combustion efficiency of the engine.SOLUTION: A governor 1 is configured to adjust ignition timing of a two-cylinder, four-stroke engine. The governor 1 comprises: a mounting bolt 15 fixed to a camshaft 21 driven by the engine; and a governor weight 12 attached to the mounting bolt 15, advances the ignition timing of the engine after the engine starts and cancels the advance when the engine stops.SELECTED DRAWING: Figure 1

The utility model discloses a lubrication system of a four-stroke engine. The lubrication system comprises an oil chamber; the upper and lower box bodies comprise a lower shell and an upper shell, the lower shell is connected with the oil chamber, and the upper shell is connected with the valve chamber; the crank connecting rod mechanism comprises a piston, a connecting rod and a crankshaft, the piston moves up and down in the air cylinder, and linear motion is converted into rotating motion of the crankshaft through the connecting rod; at least one part of the oil inlet pipeline is arranged in the lower shell in a penetrating manner, and the other part of the oil inlet pipeline extends into the oil chamber; the oil outlet pipeline is formed in the lower shell; the one-way valve is arranged at the oil outlet pipeline and used for controlling opening and closing of the oil outlet pipeline; the oil return pipeline is arranged in the upper and lower tank bodies and is used for communicating the valve chamber with the oil chamber; wherein the crankshaft is provided with an oil way, the oil way comprises a radial oil inlet hole and an axial oil outlet hole which are communicated with each other, and when the crankshaft rotates, the radial oil inlet hole can be intermittently communicated with the oil inlet pipeline, so that accurate oil inlet is realized.

1. The name of the design product: Four-stroke engine (G139F-1L). 2. The use of the design product: Four-stroke engine used with lawn mower, grass trimmer and other garden and agricultural machinery. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The utility model discloses a circulating lubricating oil mechanism of a four-stroke engine. The circulating lubricating oil mechanism comprises an oil chamber; the box body comprises a lower box body and an upper box body, the lower box body is connected with the oil chamber, and the upper box body is connected with the valve chamber; a crank-link mechanism; at least one part of the oil inlet pipeline is arranged in the lower box body in a penetrating manner, and the other part of the oil inlet pipeline extends into the oil chamber; the oil outlet pipeline is formed in the lower box body; the oil return pipeline is arranged in the upper and lower tank bodies and is used for communicating the valve chamber with the oil chamber; wherein a first part and a second part of an oil return pipeline are respectively formed on the lower box body and the upper box body, and the joint of the first part and the second part is kept sealed and communicated; during working, oil in the oil chamber sequentially passes through the oil inlet pipeline and the oil outlet pipeline and flows back through the oil return pipeline to form circulation.

The utility model discloses an air cooling structure for a hydrogen fuel engine. A four-stroke engine is fixedly installed on the top of the gearbox, the right side of the four-stroke engine is communicated with an exhaust pipe, the top of the exhaust pipe is communicated with an air exhaust mechanism, the air exhaust mechanism comprises a turbine, a connecting cylinder, a hollow sleeve and an exhaust pipe, and the top of the exhaust pipe is communicated with the turbine. The front end of the turbine communicates with a connecting cylinder, the front end of the connecting cylinder communicates with a hollow sleeve, the right side of the hollow sleeve communicates with a discharge pipe, and the end, away from the hollow sleeve, of the discharge pipe communicates with a waste gas pipe. Through the arrangement of the air exhaust mechanism, the turbine can be matched with the exhaust pipe to guide waste gas of the four-stroke engine to enter, the waste gas enters the connecting cylinder and is guided into the hollow sleeve, the hollow sleeve is matched with the exhaust pipe to guide the waste gas into the waste gas pipe to be exhausted to the outside, and waste gas exhaust is completed.

The anti-collision four-stroke gasoline engine case comprises a four-stroke engine body, a gear shell is assembled on one side wall of the four-stroke engine body, and a carburetor is assembled on the other side wall of the four-stroke engine body; an anti-collision protection plate is assembled at the bottom end of the four-stroke engine body, and an oil drainage hole is formed in the position, corresponding to an engine oil drainage opening of the four-stroke engine body, of the side wall of the anti-collision protection plate. A mounting hole is formed in the anti-collision protection plate, a fastener is assembled at the bottom end of the four-stroke engine body, and the fastener is inserted into the mounting hole; the four-stroke gasoline engine box capable of preventing collision is simple in structure and convenient to operate, the fastening piece is arranged at the bottom end of the four-stroke engine body, and the anti-collision protection plate is installed through the fastening piece, so that the bottom end of the engine body is protected, and the engine body is prevented from being damaged.