CN216767596U

CN216767596U - Push-pull type air inlet valve body of in-line electric injection engine of unmanned aerial vehicle

Info

Publication number: CN216767596U
Application number: CN202220570824.2U
Authority: CN
Inventors: 杨贵慈; 王华盛; 郝亮亮
Original assignee: Henan Puge Aviation Model Technology Co ltd
Current assignee: Henan Puge Aviation Model Technology Co ltd
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2022-06-17
Anticipated expiration: 2032-03-16

Abstract

The push-pull type air inlet valve body of the in-line electronic injection engine of the unmanned aerial vehicle comprises two valve seats, wherein each valve seat is connected with an accelerator nozzle and an air inlet, an upper cover plate of the valve body is fixedly connected to the air inlet side of each valve seat, an air inlet pipe corresponding to the air inlet is arranged on the upper cover plate of the valve body, the upper cover plate of the valve body is provided with a guide rail, an accelerator opening plate is in sliding fit on the guide rail, a hole is formed in the accelerator opening plate, and a driving mechanism is connected to the accelerator opening plate. The valve body has good effect.

Description

Push-pull type air inlet valve body of in-line electric injection engine of unmanned aerial vehicle

Technical Field

The utility model relates to an air inlet valve of an engine of an unmanned aerial vehicle, in particular to a push-pull type air inlet valve body of an in-line electronic injection engine, and belongs to the technical field of engines.

Background

The existing in-line engine air inlet valve body suitable for the unmanned aircraft mainly comprises two carburetors or two throttle valve bodies, and the technical scheme of the in-line engine air inlet valve body of the carburettor type unmanned aircraft is that a piston reciprocates in a cylinder, meanwhile, a pressure difference with the external environment is formed in an engine casing, and under the action of the pressure difference between the inside of an engine and the external environment, high-speed airflow is formed in an air inlet channel, the increase of the flowing speed of fluid is known according to Bernoulli's theorem, and the static pressure of the fluid is reduced. The fuel is sucked out from the fuel inlet hole in the carburetor under the action of the high-speed airflow and is mixed with the high-speed airflow to form fuel mixture. The gas mixture passes through the check valve and gets into the engine crankcase and carries out the precompression and distribute to the cylinder, burns the doing work, provides power for unmanned aerial vehicle.

The carburetor mainly comprises an air inlet channel, an oil inlet hole, an accelerator turning plate, an oil needle and other main parts, wherein the air inlet channel is mainly used for enabling air inlet flow to pass through the air inlet channel when pressure difference is formed between the inside of an engine and the outside to form negative pressure (the pressure is lower than the atmospheric pressure). The oil inlet hole is mainly used for communicating fuel and jetting the fuel when the intake airflow flows through. The throttle flap is mainly responsible for controlling the air flow passing through the air inlet passage so as to control the power of the engine. The oil needle controls the oil inlet quantity of the carburetor to control the concentration of the air-fuel mixture, thereby controlling the air-fuel ratio of the engine. The carburetor of the carburetor type unmanned aircraft in-line engine can only generate mixed gas with a fixed air-fuel ratio, and when the ambient air pressure changes greatly, the mixing ratio cannot be adjusted in the air, so that the carburetor type unmanned aircraft in-line engine cannot be suitable for flight operation with large altitude difference: the inside diaphragm piece that relies on of carburetor provides power for the carburetor fuel feeding, and the diaphragm piece is at low altitude, and pliability is better during high ambient temperature, can better production fuel feeding ability, but at high altitude, the pliability of diaphragm piece reduces in the environment of low ambient temperature, has great influence to fuel feeding stability, therefore the engine can influence stable working nature when external environment changes greatly. The oil consumption of the straight-line engine of the carburetor type unmanned aerial vehicle is high: the carburetor engine controls the concentration of the mixture by depending on the oil needle so as to control the air-fuel ratio of the engine, and the carburetor is only provided with one or two oil needles, so that the accurate adjustment cannot be realized in the full-rotating-speed section of the engine, only the air-fuel ratio of the highest speed and the lowest speed can be adjusted, but the adjustment cannot be realized in the middle-speed section, and the optimal air-fuel ratio of the engine cannot be realized in each rotating-speed section. In addition, when the aircraft flies from low altitude to high altitude, the air pressure of the external environment is reduced, the air inflow is reduced, but the oil supply of the carburetor is still kept in a state before the aircraft flies, at the moment, the mixer is over-rich, and the carburetor cannot be adjusted in flight, so that the working stability of the engine is influenced, the mixer is over-rich, and the oil consumption is higher. The consistency of the working state of the front cylinder and the rear cylinder of the engine of the carburetor plate is poor: the front carburetor throttle turning plate and the rear carburetor throttle turning plate of the carburetor-type unmanned aircraft in-line engine are controlled independently, the throttle opening degree of the carburetor-type unmanned aircraft in-line engine cannot be guaranteed to be completely consistent, namely the air-fuel ratio of two cylinders cannot be accurately controlled, and therefore the working consistency of the front cylinder and the rear cylinder is difficult to guarantee. Due to the flap design of the carburetor, the intake air flow generates turbulence when passing through the inclined plate, the air flow is not smooth, the air flow cannot be uniformly and well mixed with the fuel, the air-fuel ratio of the engine at each rotating speed section cannot be kept to be optimal, and the stability is greatly influenced.

Disclosure of Invention

The utility model aims to overcome the problems in the air inlet aspect of the existing engine and provides a push-pull type air inlet valve body of an inline electric injection engine of an unmanned aerial vehicle.

In order to realize the purpose of the utility model, the following technical scheme is adopted: a push-pull air inlet valve body of an in-line electric injection engine of an unmanned aerial vehicle comprises two valve seats, wherein each valve seat is connected with an accelerator nozzle and an air inlet, a valve body upper cover plate is fixedly connected to the air inlet side of each valve seat, an air inlet pipe corresponding to the air inlet is arranged on the valve body upper cover plate, a guide rail is arranged on the valve body upper cover plate, an accelerator opening plate is in sliding fit on the guide rail and is provided with a hole, a driving mechanism is connected onto the accelerator opening plate and comprises a steering engine, the steering engine is positioned between the two valve seats and is fixedly connected onto the valve body, an end shaft is arranged at the end part of an output arm of the steering engine and penetrates through bearing inner rings of a first rod end joint bearing and a second rod end joint bearing, the directions of the first rod end joint bearing and the second rod end joint bearing are opposite, and the rod end of the first rod end joint bearing is connected with the rod end of a third rod end joint bearing through a first pull rod, a rod A is arranged on the inner ring of the third rod end joint bearing in a penetrating manner, a first driving arm is fixedly connected to the rod A, and the first driving arm penetrates through a groove on the corresponding valve body upper cover plate and is fixedly connected with an accelerator opening plate; the rod end of the second rod end joint bearing is connected with the rod end of the fourth rod end joint bearing through a second pull rod, a rod B is arranged on the inner ring of the fourth rod end joint bearing in a penetrating mode, a second driving arm is fixedly connected onto the rod B, the second driving arm penetrates through a groove in the corresponding valve body upper cover plate to be fixedly connected with another throttle opening plate, and the steering engine is connected to the controller.

Further, the method comprises the following steps of; the hole on the accelerator opening plate is the same as the air inlet hole in size, and when the accelerator opening plate moves to a corresponding position, the hole is overlapped with the air inlet hole.

Further, the method comprises the following steps of; the air inlet pipe is concentric with the air inlet, and the diameter of the air inlet pipe is larger than or equal to that of the air inlet.

The utility model has the positive and beneficial technical effects that: compared with the prior art, the push-pull type air inlet valve body can be matched with an electric control fuel injection system, and the fuel injection quantity and the fuel injection time of a fuel injection nozzle are adjusted according to the running state of each moment of the engine, so that front and rear cylinders of the engine work in the state of the optimal air-fuel ratio constantly, and the purpose of saving fuel is achieved; the two push-pull type accelerator opening plates of the push-pull type air inlet valve body synchronously move at each moment, and the positions of the two push-pull type accelerator opening plates in the accelerator push-pull plate slide ways are consistent by changing the length of the ball head pull rod.

Drawings

FIG. 1 is a schematic view of one aspect of the present invention.

Fig. 2 is a schematic view of another aspect of the present invention.

Fig. 3 is a schematic view of the upper cover plate of the valve body.

FIG. 4 is a schematic view of a valve seat with an upper cover plate of the valve body removed.

Fig. 5 is a schematic view of the throttle opening plate of fig. 4 removed.

Detailed Description

In order to more fully explain the implementation of the present invention, examples of the implementation of the present invention are provided. These examples are merely illustrative of the present invention and do not limit the scope of the present invention.

The utility model is explained in further detail in connection with the accompanying drawings, in which: 101: a valve seat A; 102: an accelerator nozzle A; 103: the valve body upper cover plate A; 104: an air inlet pipe A; 105: a rod A; 106: a third rod end knuckle bearing; 107: a first pull rod; 108: a first rod end knuckle bearing; 109: a groove A; 110: a first drive arm; 111, a guide rail; 112: an accelerator opening plate A; 113: an air inlet; 114: a hole; 201: a valve seat B; 202: an accelerator nozzle B; 203: a valve body upper cover plate B; 204: an air inlet pipe B; 205: a rod B; 206: a fourth rod end joint bearing; 207: a second pull rod; 208: a second rod end knuckle bearing; 209: a groove B; 210: a second drive arm; 301, a steering engine; 302: an output arm; 303 end shaft.

As shown in the attached drawing, the push-pull type air inlet valve body of the in-line electronic fuel injection engine of the unmanned aerial vehicle comprises two valve seats, wherein the two valve seats are a valve seat A101 and a valve seat B201 respectively. The valve seat a will be mainly explained below.

An accelerator nozzle A102 and an air inlet 113 are connected on a valve seat A, a valve body upper cover plate A103 is fixedly connected on the air inlet side of the valve seat A, an air inlet pipe A104 corresponding to the air inlet is arranged on the valve body upper cover plate A, a guide rail 111 is arranged on the valve body A, an accelerator opening plate A112 is in sliding fit on the guide rail, a hole 114 is formed in the accelerator opening plate A, a driving mechanism is connected on the accelerator opening plate A, the driving mechanism comprises a steering engine 301, the steering engine is positioned between the two valve seats and fixedly connected on the valve body, an end shaft 303 is arranged at the end part of an output arm 302 of the steering engine, the end shaft 303 is arranged in bearing inner rings of a first rod end joint bearing 108 and a second rod end joint bearing 208 in a penetrating manner, the directions of the first rod end joint bearing and the second rod end joint bearing are opposite, the rod end of the first rod end joint bearing is connected with the rod end of a third rod end joint bearing 106 through a first pull rod 107, and the inner ring of the third rod end joint bearing 106 is arranged in a penetrating manner, the rod A is fixedly connected with a first driving arm 110 which passes through a groove A109 on a corresponding valve body upper cover plate and is fixedly connected with an accelerator opening plate A112; the rod end of the second rod end joint bearing is connected with the rod end of a fourth rod end joint bearing 208 through a second pull rod 207, a rod B205 penetrates through the inner ring of the fourth rod end joint bearing, a second driving arm 210 is fixedly connected onto the rod B, the second driving arm penetrates through a groove B209 in the corresponding upper cover plate of the valve body and is fixedly connected with another throttle opening plate, and the steering engine is connected to the controller.

In the application, the size of the hole on the accelerator opening plate is the same as that of the air inlet, and when the accelerator opening plate moves to a corresponding position, the hole is overlapped with the air inlet; the air pipe is concentric with the air inlet, and the diameter of the air inlet pipe is larger than or equal to that of the air inlet.

After the embodiments of the present invention have been described in detail, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the utility model, and it is intended that all simple modifications, equivalent changes and modifications made to the above embodiments based on the technical spirit of the present invention shall fall within the technical scope of the present invention, and the present invention shall not be limited to the embodiments illustrated in the description.

Claims

1. Unmanned vehicles in-line electricity spouts plug-type air intake valve body of engine, including two disk seats, is connected with throttle nozzle, air inlet on every disk seat, its characterized in that: the air inlet side of each valve seat is fixedly connected with a valve body upper cover plate, the valve body upper cover plate is provided with an air inlet pipe corresponding to the air inlet, the valve body upper cover plate is provided with a guide rail, an accelerator opening plate is in sliding fit on the guide rail, the accelerator opening plate is provided with a hole and is connected with a driving mechanism, the driving mechanism comprises a steering engine, the steering engine is positioned between two valve seats and is fixedly connected to the valve body, an end shaft is arranged at the end part of an output arm of the steering engine and penetrates through bearing inner rings of a first rod end joint bearing and a second rod end joint bearing, the first rod end joint bearing and the second rod end joint bearing are opposite in direction, the rod end of the first rod end joint bearing is connected with the rod end of the third rod end joint bearing through a first pull rod, a rod A penetrates through the inner ring of the third rod end joint bearing, a first driving arm is fixedly connected onto the rod A, and the first driving arm penetrates through a corresponding groove in the upper cover plate of the valve body and is fixedly connected with an accelerator opening plate; the rod end of the second rod end joint bearing is connected with the rod end of the fourth rod end joint bearing through a second pull rod, a rod B is arranged on the inner ring of the fourth rod end joint bearing in a penetrating mode, a second driving arm is fixedly connected onto the rod B, the second driving arm penetrates through a groove in the corresponding valve body upper cover plate to be fixedly connected with another throttle opening plate, and the steering engine is connected to the controller.

2. A push-pull intake valve body of an in-line electronic fuel injection engine of an unmanned aerial vehicle as claimed in claim 1, wherein: the hole on the accelerator opening plate is the same as the air inlet hole in size, and when the accelerator opening plate moves to a corresponding position, the hole is overlapped with the air inlet hole.

3. A push-pull intake valve body of an in-line electronic fuel injection engine of an unmanned aerial vehicle as claimed in claim 1, wherein: the air inlet pipe is concentric with the air inlet, and the diameter of the air inlet pipe is larger than or equal to that of the air inlet.