18 results about "Single-cylinder engine" patented technology

The utility model belongs to the technical field of diesel engines, and relates to a hydrogen fuel single-cylinder engine which comprises a piston and a piston pit located at the end of the piston, and the piston pit is of a shallow-basin-shaped structure. The system further comprises a hydrogen inlet system and an electric control system, the hydrogen inlet system comprises a hydrogen sprayer, a hydrogen cylinder, a gas delivery pipe and a pressure increasing valve, the electric control system comprises a control unit, an electronic accelerator and a crankshaft position sensor, the hydrogen cylinder is communicated with the hydrogen sprayer through the gas delivery pipe, the hydrogen sprayer is communicated with the combustion chamber, and the pressure increasing valve is arranged on the gas delivery pipe. And the control unit is electrically connected with the hydrogen sprayer, the electronic throttle and the crankshaft position sensor respectively. The structure of the piston pit is improved, the electronic control gas injection system and the fuel oil injection system are adopted to replace a traditional pure fuel oil injection system, timing and quantification of hydrogen gas injection can be guaranteed, good economical efficiency is achieved, and the hydrogen gas replacement rate can reach about 90%; pollutant emission is greatly reduced, and low oil consumption is kept.

The invention discloses a dual-fuel single-cylinder engine combustion system based on water spraying-EGR cooperative control and a control method of the dual-fuel single-cylinder engine combustion system, and belongs to the technical field of engines. A dual-fuel single-cylinder engine combustion system based on water spray-EGR cooperative control comprises a hydrogen direct injection system, a diesel injection system, an air inlet channel water spray system, a turbocharging system, an EGR system and an electric control system, and a high-pressure water pump of the water spray system is connected with an air compressor of the turbocharging system through a coupler; the system further comprises an exhaust water circulation system, the exhaust water circulation system comprises a water-steam separator, the water-steam separator is connected to an engine exhaust pipeline, and the water separation end of the water-steam separator is connected with the water tank through a pipeline. One end of the EGR system is connected to an engine exhaust pipeline behind the water-steam separator, and the other end of the EGR system is connected to an engine air inlet pipeline in front of the air compressor. And the ECU performs water spraying-EGR cooperative control according to the working condition of the engine.

1. Name of the designed product: single cylinder engine. 2. Use of the designed product: the designed product is used to provide power for vehicles. 3. Design points of the designed product: in shape. 4. Picture or photo that best shows the design points: perspective view.

(Main claim - crankshaft + center bearing) Crankshaft fusion arrangement (1) for a two-cylinder two-stroke reciprocating piston engine, characterized in that, that a one-piece crankshaft is made up of an inner part of a first shaft type and outer parts of a second shaft type, wherein shortened crankpins (2) connect the parts to each other in a form-fit and / or material-fit manner, the crankshaft is designed for a split center bearing support (3), and the arrangement can be inserted laterally into an unmodified original single-cylinder engine housing (7).

The utility model discloses a sealing cylinder body structure of a mower, the upper end face of a cylinder body is provided with an annular first sealing groove, the first sealing groove is arranged on the outer side of a piston cavity, the lower end face of a cylinder cover is provided with an annular second sealing groove, and the second sealing groove and the first sealing groove are arranged in a staggered mode. Due to the fact that the first sealing groove and the second sealing groove are arranged, two seals can be added on the basis that the cylinder gasket is sealed, and the situation that due to the fact that a single-cylinder engine works at high temperature and high pressure for a long time, a cylinder gasket material is hardened and loses elasticity is avoided. According to the device, due to the fact that the positioning shaft is arranged, the cylinder cover and the cylinder gasket can be conveniently and rapidly positioned and installed, the installation time is saved, and the installation efficiency is improved.

The invention discloses a disengagement operation warning device for a ship single-cylinder engine turning gear. The disengagement operation warning device comprises a proximity switch for crankshaft bottom dead center detection, a meshing limit switch, a disengagement limit switch and a warning circuit, wherein the proximity switch for detecting the crankshaft bottom dead center is fixed on the machine base and corresponds to a marking block on a flywheel in position, when the proximity switch is located at the bottom dead center position, the proximity switch for detecting the crankshaft bottom dead center is turned into a closed state from a normally-open state so as to conduct a circuit, and the meshing limit switch is fixed on a turning machine; once the turning gear is separated from the meshing position, the turning gear is switched from a normally open state to a closed state, the disengagement limit switch is fixed on the turning gear, once the turning gear is separated from the disengagement position, the turning gear is switched from the normally open state to the closed state, and the warning circuit is connected with the meshing limit switch and the disengagement limit switch. And when the position is not at the bottom dead center position and the disconnection misoperation occurs, an acousto-optic alarm is given. According to the invention, misoperation of disengagement of the turning gear under improper conditions is avoided, the risk of misoperation is reduced, and the safety of disengagement operation of the turning gear is guaranteed.

The utility model belongs to the technical field of diesel engines, and relates to a hydrogen fuel single-cylinder engine which comprises a piston and a piston pit located at the end of the piston, and the piston pit is of a shallow-basin-shaped structure. The device further comprises a hydrogen inlet system and an electric control system, the hydrogen inlet system comprises a hydrogen cylinder, a gas conveying pipe and an electronic injection valve, the hydrogen cylinder is communicated with the gas inlet channel through the gas conveying pipe, the electronic injection valve is arranged on the gas conveying pipe, and the electric control system comprises a control unit, an electronic accelerator and a crankshaft position sensor. The control unit is electrically connected with the electronic injection valve, the electronic accelerator and the crankshaft position sensor. The structure of the piston pit is improved, the electronic control gas injection system and the fuel oil injection system are adopted to replace a traditional pure fuel oil injection system, timing and quantification of hydrogen gas injection can be guaranteed, good economical efficiency is achieved, and the hydrogen gas replacement rate can reach about 60%; pollutant emission is greatly reduced, and low oil consumption is kept.

The utility model discloses a mechanical cooling and heating system device of a closed motor tricycle, which belongs to the technical field of engine application and comprises a frame body, an evaporator, a condenser integrated assembly, a horizontal bar engine assembly and a compressor are mounted on the frame body, the condenser integrated assembly is mounted on the side edge of the frame body, and the horizontal bar engine assembly is mounted on the side edge of the frame body. The horizontal bar engine assembly is installed on the frame body through a support, a compressor support is installed on the compressor, the compressor support is installed on the horizontal bar engine assembly, and the evaporator is placed close to the front end of the frame body. The problem that an independent air conditioning system is difficult to install in a small three-wheel truck or mechanical equipment due to space limitation is solved, the mechanical air conditioning compressor is directly integrated on the single-cylinder engine through ingenious design, space is saved, energy utilization efficiency is improved, and complexity and maintenance cost of the whole system are reduced.

The present invention is related to a process for obtaining organic ammonium salts (OAS) and their derivatives, supramolecular surfactants (SS), which simultaneously present the properties of traceability and detergents dispersant of organic scales. Organic ammonium salts (OAS) and their derivatives supramolecular surfactants (SS) have applications as differentiators, markers, or tracers in fuels derived from hydrocarbons; and also to disperse organic scales or inhibit the gums precipitation both in injectors and intake valves of automotive vehicle engines. Organic ammonium salts (OAS) are obtained through an acid-base reaction between a molecule from the azo family and an amine. Once the OAS is obtained, it reacts with an organic compound (OC) so that through non-covalent interactions, a self-assembly process occurs that gives rise to the SS. Said process is based on green chemistry, that is, in the absence of solvents. These OAS and SS are quantified through the analytical techniques of ultraviolet-visible (UV-VIS) and high-performance liquid chromatography (HPLC) through a calibration curve. Additionally, its performance as a gum-dispersing agent in a single-cylinder engine is evaluated.

The invention discloses a control method of a compression ignition type hydrogen-diesel mixed combustion single-cylinder engine system, and belongs to the technical field of compression ignition type engines. The engine system comprises a cylinder cover matched with a cylinder sleeve of an engine, an air inlet system, a diesel oil supply system, a hydrogen supply system, a cooling system and an electric control system. A high-pressure air storage tank of the air inlet system is connected with an air inlet channel in the cylinder cover through a pipeline. A hydrogen spraying device of the hydrogen supply system is arranged on the cylinder cover and communicated with the combustion chamber, and a hydrogen spraying hole of the hydrogen spraying device is communicated with an inner cavity of the hydrogen spraying device through a spiral air channel arranged in the air outlet end of the hydrogen spraying device; a water spraying valve of the water spraying system is communicated with an air inlet pipeline of the air inlet system. And the cooling system is a forced circulation cooling system. The injection timing and pulse width of diesel oil, hydrogen and water, the air inlet pressure and flow, the optimal cooling temperature of a cooling medium and the like are controlled on line through an electric control system. The hydrogen replacement rate can be increased, knocking can be reduced, and the engine efficiency can be improved.

A single-cylinder engine includes a cylinder and a cylinder head stacked on an upper portion of a crankcase, and an electronically controlled throttle interposed in an intake passage behind the cylinder head. The vehicle body frame includes a pair of main frames extending rearward from a head pipe, and rear portions of the pair of main frames form a pair of body frames bent downward behind the cylinder head. The electronically controlled throttle includes a throttle valve provided in the intake passage and an actuator that opens and closes the throttle valve. In a side view, an upper edge of the actuator is along a lower edge of the suspension bracket, and a rear edge of the actuator is along front edges of the body frames.

The utility model discloses a motorcycle single-cylinder engine maintenance rack, which relates to the technical field of motorcycle maintenance equipment, and comprises a maintenance rack main body, one side of the maintenance rack main body is fixedly connected with an engine placing table, and one side, close to the engine placing table, of the maintenance rack main body is fixedly connected with a waste recovery disc. A clamping mechanism is fixedly connected to the inner side of the maintenance frame body, a lifting mechanism supporting frame is fixedly connected to one end of the maintenance frame body, and a lifting mechanism is fixedly connected to the other end of the lifting mechanism supporting frame. The first servo motor drives the lead screw to rotate, the lead screw drives the first adjusting block to move, the first adjusting block moves on the lead screw and the sliding rod, the first adjusting block drives the electric hoisting device to move and adjust the position, and when the electric hoisting device is adjusted to the proper position, the electric hoisting device is started to extend the hoisting rope; and the motorcycle engine is lifted by the lifting hook at the lower end of the lifting rope.

The utility model belongs to the technical field of motorcycle engines, and particularly discloses a motorcycle single-cylinder engine and a motorcycle. The single-cylinder engine of the motorcycle comprises a shell assembly, the cylinder assembly is arranged on the shell assembly, the crankshaft is arranged in the shell assembly, a first balancing weight is arranged on the crankshaft, a driving gear is arranged on the crankshaft, a driven gear is arranged in the shell assembly, a second balancing weight is integrally arranged on the driven gear, and a first timing chain wheel used for driving a cam shaft to rotate is arranged on the balance shaft; the clutch assembly is arranged in the shell assembly and located on one side of the air cylinder assembly. The driven gear is arranged on the balance shaft and can be driven by the driving gear to rotate, and the second balancing weight and the driven gear are integrally arranged, so that the structure on the whole balance shaft is more compact, the overall size and weight of an engine are reduced, the lightweight performance of the engine is improved, and the service life of the engine is prolonged. And meanwhile, the assembly difficulty can be effectively reduced.

The utility model belongs to the technical field of motorcycle engines, and particularly discloses a motorcycle single-cylinder engine air cylinder arrangement structure and an engine, the engine comprises a clutch and an air cylinder, the air cylinder comprises an air cylinder body, an air cylinder head and an air cylinder cover which are sequentially arranged from bottom to top, and the air cylinder body extends towards the air cylinder cover along the air cylinder body. The air cylinder inclines in the direction close to the clutch. By changing the overall inclination direction of the air cylinder from forward inclination to backward inclination, the overall gravity center of the engine moves backwards, so that the overall gravity center position of the motorcycle is optimized, the motorcycle is more flexible during low-speed running and turning, the operation of the motorcycle is facilitated due to the fact that the axle load of the rear wheel is large, and the service life of the motorcycle is prolonged. And meanwhile, front wheel burden and front wheel abrasion can be reduced.

The application provides a method for adjusting an optical single-cylinder engine EGR rate, comprising the following steps: S1, determining a target test working condition of the optical single-cylinder engine; S2, determining an initial CO2 flow rate required to be introduced into the optical single-cylinder engine according to test parameters of a four-cylinder engine in the market when the four-cylinder engine performs the target test working condition on a test bench; S3, opening a CO2 cylinder and a pressure reducing valve, and controlling a manual valve switch to introduce pure CO2 into the optical single-cylinder engine, and running the optical single-cylinder engine in a motoring mode; S4, calculating an actual EGR rate of the optical single-cylinder engine according to CO2 concentrations measured by a first CO2 concentration measuring device and a second CO2 concentration measuring device; S5, judging whether the actual EGR rate reaches a target EGR rate; S6, if the actual EGR rate does not reach the target EGR rate, controlling the manual valve switch to correct the CO2 flow rate, and measuring the corrected actual EGR rate again; repeating the steps S5 to S6 until the corrected actual EGR rate reaches the target EGR rate.

This invention discloses a two-stage combustion six-stroke engine, comprising a single-cylinder engine body, a fuel injector, and a valve train unit disposed on the cylinder head; the valve train unit includes a gas reservoir, a first intake port, a second intake port, and a gas injector, used to compress and store gas and release gas; the center of the injector nozzle is located on a first axis; the centers of the gas reservoir and the injector nozzle are located away from the first axis to form tumble flow in the combustion chamber; the six-stroke engine utilizes the gas reservoir and part of the first intake port to achieve two consecutive compression and combustion of the working fluid in the same cylinder; moreover, in the second compression and combustion power stroke, the gas injected into the combustion chamber by the gas injector interacts with the in-cylinder airflow formed near the gas reservoir, forming enhanced tumble flow in the combustion chamber.

The application discloses a single-cylinder engine intake and exhaust pressure boundary control device and method, and relates to the technical field of single-cylinder engines. The control device comprises a single-cylinder engine, an air compressor connected to the air inlet end of the single-cylinder engine, and an exhaust manifold connected to the air outlet end of the single-cylinder engine. The air inlet control module comprises an air inlet fluctuation valve connected between the air compressor and the single-cylinder engine, which is used for adjusting the control parameters of the first gas provided by the air compressor, so that the first gas meets the air inlet requirements of the single-cylinder engine. The exhaust control module comprises an exhaust fluctuation valve connected between the single-cylinder engine and the exhaust manifold, which is used for adjusting the control parameters of the second gas discharged by the single-cylinder engine, so that the second gas meets the exhaust requirements of the single-cylinder engine. In this way, by arranging the air inlet fluctuation valve and the exhaust fluctuation valve, the fluctuation amplitude, waveform and period of the single-cylinder engine intake and exhaust are controlled, and then the single-cylinder engine intake and exhaust pressure boundary is controlled, and the control precision of the intake and exhaust pressure boundary is improved.