CN213775521U

CN213775521U - Light simple diesel engine

Info

Publication number: CN213775521U
Application number: CN202021668124.4U
Authority: CN
Inventors: 李秀峰; 梁蕃焕; 乌江; 梁奇
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2021-07-23
Anticipated expiration: 2030-08-12

Abstract

The utility model provides a light simple diesel engine, a connecting rod is fixedly connected with a piston arranged in a cylinder, the piston is provided with a supercharging air passage, a scavenging supercharging valve is arranged in the supercharging air passage, the lower end of the supercharging air passage is provided with a spring installation cavity, the lower end of the scavenging supercharging valve extends into the spring installation cavity and is provided with a return spring, the upper end of the scavenging booster valve is provided with a limit baffle which is arranged at an air outlet at the upper end of the booster air passage, the top of the cylinder is provided with an exhaust port which exhausts the waste gas in the cylinder through an exhaust pipe, an exhaust valve is arranged in the exhaust port, a pulling baffle is arranged at the lower end of the exhaust valve, the pulling baffle is arranged below the limiting baffle, and when the piston moves downwards, the scavenging booster valve is opened, an exhaust valve is also arranged on the exhaust valve, and the exhaust valve is arranged at an exhaust port in the cylinder. The exhaust valve is linked with the scavenging booster valve, so that the combustion is sufficient, the scavenging is thorough, the fuel efficiency is high, and the pollutant emission is reduced.

Description

Light simple diesel engine

Technical Field

The patent of the utility model relates to a diesel engine specifically is a light-duty brief diesel engine.

Background

The diesel engine is an internal combustion engine using diesel oil as fuel, and belongs to a compression ignition type engine. Generally, a diesel engine comprises a combustion chamber, a crank link mechanism, a supporting connecting piece and other parts, and diesel oil is combusted in the combustion chamber to generate high pressure so as to push a piston to drive the crank link mechanism to work and output power.

Traditional diesel engine structure is complicated, and manufacturing cost is high, and unnecessary power loss is also produced to complicated structure, and diesel engine intake valve and exhaust valve are all the direct-in directly-out moreover, and the waste gas in the cylinder can often be gathered in corner the inside, and it is not thorough to discharge, and remaining waste gas can influence the combustion efficiency of diesel oil in the diesel engine for fuel utilization reduces, and use cost also increases thereupon, therefore this kind of diesel engine technique has not been adopted.

SUMMERY OF THE UTILITY MODEL

The utility model provides a light-duty brief diesel engine can make the fuel burning fully and clean waste gas completely, simple structure, convenient to use.

The technical scheme of the utility model: a light simple diesel engine comprises a flywheel, a crankshaft and a connecting rod, and is characterized in that the connecting rod is fixedly connected with a piston arranged in a cylinder, a supercharging air passage is arranged on the piston, a scavenging supercharging pressure valve is arranged in the supercharging air passage, a spring mounting cavity is arranged at the lower end of the supercharging air passage, the lower end of the scavenging pressure valve extends into the spring mounting cavity and is provided with a reset spring, a limit baffle is arranged at the upper end of the scavenging pressure valve, the limit baffle is arranged at the upper end air outlet of the supercharging air passage, an air outlet is arranged at the top of the cylinder, the exhaust outlet discharges waste gas in the cylinder through an exhaust pipe, an exhaust valve is arranged in the air outlet, the lower end of the exhaust valve is provided with a pulling baffle, the pulling baffle is arranged below the limit baffle, the scavenging pressure valve is opened when the piston moves downwards, and an exhaust valve is further arranged on the exhaust valve, an exhaust valve is disposed at an exhaust port in the cylinder.

An air inlet valve is installed at the bottom end of the air cylinder, and an air inlet matched with the air inlet valve is formed in the air cylinder.

The top of the cylinder is provided with a combustion chamber, and an oil nozzle communicated with the outside is arranged in the combustion chamber.

The scavenging booster valve comprises a scavenging control rod, a limiting pull plate is arranged at the bottom end of the scavenging control rod, a linkage control rod is arranged at the upper end of the scavenging control rod, and the top end of the linkage control rod is fixedly connected with a limiting baffle.

The linkage control rods are provided with two, and the bottom ends of the two linkage control rods are connected to form a U-shaped structure.

The utility model has the advantages that: the up-and-down motion of piston converts the rotation of flywheel into through connecting rod and bent axle, thereby the flywheel rotates external transmission power, the utility model discloses simple structure increases pressure boost air flue and scavenging booster valve on the piston, can increase atmospheric pressure when exhausting, improves scavenging efficiency, adopts admission valve and discharge valve structure, discharge valve and the linkage of scavenging booster valve for the burning is abundant, and scavenging is thorough, and the fuel is efficient and reduce the pollutant emission.

Drawings

FIG. 1 is a schematic view of the upward state of the monobloc piston of the present invention;

FIG. 2 is a schematic view of the descending state of the monobloc piston of the present invention;

fig. 3 is a schematic view of the connection structure of the scavenging pressurizing valve and the exhaust valve of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and fig. 2, the technical solution of the present invention is: the utility model provides a light-duty brief diesel engine, includes flywheel 1, bent axle 2 and connecting rod 3, connecting rod 3 fixed connection installs piston 5 in cylinder 4, pressure boost air flue 10 has been seted up on piston 5, installation scavenging booster valve 11 in the pressure boost air flue 10, spring-loaded chamber 12 has been seted up to the lower extreme at pressure boost air flue 10, the lower extreme of scavenging booster valve 11 stretches into in spring-loaded chamber 12 and installs reset spring, limit baffle 13 is installed to the upper end of scavenging valve 11, limit baffle 13 sets up in the upper end gas outlet department of pressure boost air flue 10, gas vent 6 has been seted up at cylinder 4 top, and gas vent 6 passes through blast pipe 7 and discharges the waste gas in cylinder 4, set up discharge valve 16 in the gas vent 6, discharge valve 16's lower extreme sets up pulling baffle 15, and pulling baffle 15 sets up in limit baffle 13 below, will scavenge booster valve 11 open when piston 5 is descending, an exhaust valve 14 is also mounted on the exhaust valve 16, the exhaust valve 14 being disposed at the exhaust port 6 in the cylinder 4.

An air inlet valve 8 is installed at the bottom end of the air cylinder 4, and an air inlet 9 matched with the air inlet valve 8 is formed in the air cylinder 4.

The top of the cylinder 4 is provided with a combustion chamber 17, and an oil nozzle 18 communicated with the outside is arranged in the combustion chamber 17.

Referring to fig. 3, the scavenging booster valve 11 includes a scavenging control rod 19, a limiting pulling plate 20 is installed at the bottom end of the scavenging control rod 19, a linkage control rod 21 is installed at the upper end of the scavenging control rod 19, and the top end of the linkage control rod 21 is fixedly connected to the limiting baffle 13.

The linkage control rods 21 are provided with two linkage control rods, and the bottom ends of the two linkage control rods 21 are connected to form a U-shaped structure.

The utility model discloses a working process is: when the diesel engine is started, the flywheel rotates to drive the crankshaft and the connecting rod to move, the crankshaft and the connecting rod convert the rotation of the main shaft into the up-and-down motion of the piston, the piston moves upwards, the one-way air inlet valve of the air inlet is opened to suck air, the scavenging booster valve and the exhaust valve are closed simultaneously, fresh air enters the boosting air passage, the piston compresses air and fuel in the combustion chamber, the air and the fuel are compressed and then detonated to generate thrust, the piston is pushed downwards, the piston moves downwards while the one-way air inlet valve is closed, the scavenging booster valve is opened, the scavenging booster valve drives the exhaust valve to be opened, the fresh air in the boosting air passage enters the combustion chamber to discharge waste gas after deflagration out of the engine through the exhaust port, the direct-flow scavenging of the combustion chamber is completed, and the diesel engine is started. When the diesel engine works normally, the piston moves up and down to drive the flywheel to rotate, and power output is carried out.

The utility model discloses a light-duty brief diesel engine, the up-and-down motion of piston converts the rotation of flywheel into through connecting rod and bent axle, thereby the flywheel rotates external transmission power, when the piston goes upward, the scavenging booster valve goes upward, the spring compression of scavenging booster valve, limit baffle seals the booster air flue upper end, the pulling baffle is upwards promoted by the coordinated control pole simultaneously, the air outlet is sealed to the air discharge gate, when the piston is down, the scavenging control pole of scavenging booster valve is down, limit baffle will stimulate the baffle and stimulate downwards, limit baffle opens the booster air flue upper end this moment, the exhaust valve leaves the gas outlet, thereby the gas outlet is opened. The utility model discloses simple structure increases pressure boost air flue and scavenging booster valve on the piston, can increase atmospheric pressure when exhausting, improves scavenging efficiency, adopts admission valve and discharge valve structure for the burning is abundant, and scavenging is thorough, and the fuel is efficient and reduce the pollutant and discharge.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a light-duty brief diesel engine, includes flywheel (1), bent axle (2) and connecting rod (3), its characterized in that, piston (5) in cylinder (4) are installed to connecting rod (3) fixed connection, pressure boost air flue (10) have been seted up on piston (5), installation scavenging booster valve (11) in pressure boost air flue (10), spring installation chamber (12) have been seted up to the lower extreme at pressure boost air flue (10), the lower extreme of scavenging booster valve (11) stretches into in spring installation chamber (12) and installs reset spring, limit baffle (13) are installed to the upper end of scavenging booster valve (11), limit baffle (13) set up in the upper end gas outlet department of pressure boost air flue (10), gas vent (6) have been seted up at cylinder (4) top, and gas vent (6) are through blast pipe (7) with the waste gas discharge in cylinder (4), set up discharge valve (16) in gas vent (6), the lower extreme of discharge valve (16) sets up pulling baffle (15), and pulling baffle (15) set up in limit baffle (13) below, will scavenge air booster valve (11) open when piston (5) are down, still install exhaust valve (14) on discharge valve (16), exhaust valve (14) set up gas vent (6) department in cylinder (4).

2. A light-duty simple diesel engine according to claim 1, characterized in that the bottom end of the cylinder (4) is provided with an air inlet valve (8), and the cylinder (4) is provided with an air inlet (9) matched with the air inlet valve (8).

3. A light-weight, simple diesel engine according to claim 1, characterized in that the top of the cylinder (4) is provided with a combustion chamber (17), and the combustion chamber (17) is provided with an oil nozzle (18) communicated with the outside.

4. A light simple diesel engine according to claim 1, characterized in that the scavenging booster valve (11) comprises a scavenging control rod (19), a limiting pull plate (20) is installed at the bottom end of the scavenging control rod (19), a linkage control rod (21) is arranged at the upper end of the scavenging control rod (19), and the top end of the linkage control rod (21) is fixedly connected with a limiting baffle (13).

5. A light-weight and simple diesel engine as set forth in claim 4, characterized in that said linkage control rods (21) are provided in two numbers, and the bottom ends of the two linkage control rods (21) are connected to form a U-shaped structure.