CN210317503U

CN210317503U - Fuel injection ECU (electronic control unit) of two-stroke gasoline engine for unmanned aerial vehicle

Info

Publication number: CN210317503U
Application number: CN201920651300.4U
Authority: CN
Inventors: 谭晞铭; 谭泽裕
Original assignee: Beihai Skyline Aviation Technology Co ltd
Current assignee: Beihai Skyline Aviation Technology Co ltd
Priority date: 2019-05-08
Filing date: 2019-05-08
Publication date: 2020-04-14
Anticipated expiration: 2029-05-08

Abstract

The utility model discloses a two-stroke gasoline engine fuel injection ECU electronic control unit for unmanned aerial vehicle, including instruction input bayonet socket, controller mainboard, main operation board, fixed screw, shell, executor output socket, special plug-in components connection detection extension socket and installation fixed orifices, the instruction input bayonet socket links to each other with the controller mainboard, and the controller mainboard passes through the connector and links to each other with main operation board, and is fixed in the shell with the fixed screw, and main operation board links to each other with executor output socket. The utility model adopts ECU electronic control unit control technology, reduces exhaust pollution, reduces fuel consumption of the engine, and meets the performance requirements of the two-stroke engine of the unmanned aerial vehicle; the change of the throttle valve is quickly responded, so that the operating performance and the accelerating performance of the engine are improved, and good power performance indexes can be kept; the engine is allowed to adopt a higher compression ratio, the thermal efficiency of the engine is improved, and the knocking tendency of the engine can be reduced.

Description

Fuel injection ECU (electronic control unit) of two-stroke gasoline engine for unmanned aerial vehicle

Technical Field

The utility model belongs to the technical field of unmanned aerial vehicle, be the ECU electronic control unit of two-stroke engine power system special design research and development that is special for unmanned aerial vehicle use more than the medium-sized.

Background

Conventionally, the core technology of domestic ECUs has been almost monopolized by foreign enterprises. ECU electronic control units are widely used in the automotive field as core components of automotive electronics. However, the two-stroke engine ECU electronic control unit adopted by the unmanned aerial vehicle which has been widely developed in recent years is also technically monopolized by foreign manufacturers and technically blockaded in China. The state is mature in the field and widely used, and is still blank.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art and the actual situation, the utility model provides a two-stroke gasoline engine fuel injection ECU electronic control unit for unmanned aerial vehicle, which comprises a command input socket, a controller mainboard, a main operation board, a fixing screw, a shell and an actuator output socket, wherein the command input socket is connected with the controller mainboard, the controller mainboard is connected with the main operation board through a connector and is fixed in the shell by the fixing screw, and the main operation board is connected with the actuator output socket;

the input socket is used for receiving signals acquired by the sensor and command voltage signals given by the flight control system and sending the signals to the ECU mainboard;

the ECU main board is used for converting the received flight control system instruction and each sensor signal into operation data required by the main operation board respectively;

the main operation board is used for receiving data sent by the ECU main board, calculating the current required torque of the unmanned aerial vehicle, providing the due oil injection quantity and the air input quantity, and respectively outputting the oil injection quantity and the air input quantity to an oil nozzle electromagnetic valve, a miniature high-pressure oil pump and a throttle valve control mechanism of the actuator through an actuator output socket so as to control the throttle valve to increase or decrease the opening.

Preferably, the unmanned aerial vehicle further comprises a special plug-in connection detection expansion socket, after the ECU assembly is assembled, the special plug-in connection detection expansion socket is used, and the unmanned aerial vehicle ground software is connected for data entry and debugging.

Preferably, still including the installation fixed orifices, the ECU electrical control unit assembly after the debugging finishes passes through the installation fixed orifices and fixes on the mounting panel in the unmanned aerial vehicle fuselage with the screw.

Preferably, the sensors include an engine temperature sensor, a rotational speed signal sensor, an air temperature sensor, and an intake air flow sensor of the engine.

Preferably, the ECU electronic control unit is also provided with an atmospheric pressure sensor, the atmospheric pressure sensor can acquire the change of atmospheric pressure in real time, and the ECU electronic control unit calculates the altitude of the engine during working to automatically correct the fuel injection amount, so that the engine can also stably work in a high altitude environment.

Preferably, signals of the increase or decrease of the opening degree of the throttle valve are fed back to the ECU main board through an actuator output socket to control the micro high-pressure oil pump, the micro high-pressure oil pump controls the oil nozzle to increase or decrease the oil injection pulse width through a control microcomputer, the torque of the engine can be increased or decreased, and the tension of the engine is changed to control the flight speed of the unmanned aerial vehicle.

The utility model discloses an unmanned aerial vehicle two-stroke engine ECU electronic control unit that explains is starting difficulty, the idle unstability, the transition is bad, power is not enough, oil leak, oil consumption height that the diaphragm formula carburetor to the reciprocating piston engine that unmanned aerial vehicle used at present exists, the engine ECU electronic control fuel injection system of development.

The diaphragm carburetor is replaced by the throttle valve, a fuel inlet channel injection mode is adopted, and the engine ECU controls fuel to be accurately injected into the crankcase according to the real-time working condition of the engine, so that the fuel efficiency is improved, the fuel consumption is reduced, and the working stability and reliability of the engine are improved.

An engine temperature sensor, an air temperature sensor, an ambient pressure sensor and an air intake flow sensor are integrated in an engine ECU (electronic control Unit), and the ECU can correct the fuel injection quantity in real time according to the ambient temperature, the current working temperature of the engine, the air intake flow and the ambient pressure, so that the stable operation of the engine under various working conditions is ensured.

The ECU of the engine is provided with an atmospheric pressure sensor, so that the change of atmospheric pressure can be acquired in real time, the altitude of the engine during working is calculated, and the fuel injection quantity is automatically corrected, so that the engine can stably work in a high altitude environment.

Compared with the supply mixing mode of a diaphragm type carburetor, the ECU electronic control unit controls the fuel injection system to have the following advantages:

(1) by adopting the ECU control technology, the defects of difficult starting, unstable idling, poor transition, insufficient power, oil leakage, high oil consumption and the like of the diaphragm carburetor are effectively improved, the exhaust pollution is reduced, the fuel consumption of the engine is reduced, and the performance requirement of the two-stroke engine of the unmanned aerial vehicle is met.

(2) The ECU responds to the change of the throttle valve quickly, so that the operating performance and the acceleration performance of the engine are improved, and good power performance indexes can be kept; the engine is allowed to adopt a higher compression ratio, the thermal efficiency of the engine is improved, and the knocking tendency of the engine can be reduced.

(3) The ECU system has strong adaptability, only the 'map' in the ECU chip is changed for different types of engines, and the same oil pump, nozzle, ECU and the like can be used in products with different specifications and types.

Drawings

The present invention will be further explained with reference to the accompanying drawings.

FIG. 1 is a schematic structural diagram of an electronic control unit of a two-stroke gasoline engine fuel injection ECU for an unmanned aerial vehicle according to the present invention;

in the figure: 1. the device comprises a command input socket 2, a controller mainboard 3, an atmospheric pressure sensor 4, a detection expansion socket 5, a main operation board 6, a fixing screw 7, an actuator output socket 8, a shell 9 and an installation fixing hole.

Detailed Description

An Electronic Control Unit (ECU) system overview of the engine ECU;

a sensor: the function is catching all kinds of signals on the unmanned aerial vehicle engine, sends for the controller.

An actuator: the function is the instruction that execution controller sent, and then influences the operating condition of unmanned aerial vehicle engine. For example, the oil injection quantity of an oil injection nozzle and the opening size of a throttle valve can change the rotating speed of an engine, increase or decrease the torque, and change the flying speed and the attitude of the unmanned aerial vehicle according to a control instruction.

A controller: the ECU is responsible for carrying out a large amount of calculation, carrying out operation according to information captured by the sensor, judging the intention of the flight control system for sending instructions and the state of the unmanned aerial vehicle, and sending the instructions to the actuator after integrating various factors.

As shown in figure 1, the utility model discloses a two-stroke gasoline engine fuel injection ECU electronic control unit for unmanned aerial vehicle, ECU electronic control unit's controller mainboard 2 passes through the connector to be connected with main operation board 5, fixes in shell 8 with fixed screw 6, constitutes ECU electronic control unit assembly. After the ECU assembly is assembled, the detection extension socket 4 is connected by a special plug-in, and the ground software of the unmanned aerial vehicle is connected for data entry and debugging. And the ECU assembly after debugging is fixed on a mounting plate in the unmanned aerial vehicle body through the mounting fixing hole 9 by screws.

The flight control system gives a command voltage signal to an ECU according to a set flight program, a temperature sensor, a rotating speed signal sensor, an air temperature sensor, an atmospheric pressure sensor 3 of the ECU and an air inlet flow sensor of the engine on the engine send collected signals of each sensor to an ECU main board 2 through a command input socket 1, the ECU main board 2 can respectively convert received flight control system commands and each sensor signal into operation data required by a main operation board 5, the main operation board 5 receives the data sent by the ECU main board 2, calculates the current required torque of the unmanned aerial vehicle, gives due oil injection quantity and air inflow, respectively outputs the due oil injection quantity and air inflow to an oil nozzle electromagnetic valve, a micro high-pressure oil pump and a throttle valve control mechanism of an actuator through an actuator output socket 7, and further controls the throttle valve to increase or reduce the opening degree, signals of the opening degree of the throttle valve are increased or reduced and are simultaneously fed back to the ECU main board 2 through the actuator output socket 7 to control the micro high-pressure oil pump, the micro high-pressure oil pump controls the oil nozzle to increase or reduce the oil injection pulse width through the control microcomputer, the torque of the engine can be increased or reduced, and the engine tension is changed to control the flight speed of the unmanned aerial vehicle.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fuel injection ECU electronic control unit of a two-stroke gasoline engine for an unmanned aerial vehicle is characterized by comprising a command input socket, a controller mainboard, a main operation board, fixing screws, a shell and an actuator output socket, wherein the command input socket is connected with the controller mainboard;

2. The two-stroke gasoline engine fuel injection ECU electronic control unit for the unmanned aerial vehicle of claim 1, further comprising a special plug-in connection detection extension socket, wherein after the ECU electronic control unit assembly is assembled, the special plug-in connection detection extension socket is used to connect the ground software of the unmanned aerial vehicle for data entry and debugging.

3. The two-stroke gasoline engine fuel injection ECU electronic control unit for the unmanned aerial vehicle of claim 2, further comprising mounting fixing holes, wherein the ECU electronic control unit assembly after debugging is fixed on a mounting plate in the unmanned aerial vehicle body through the mounting fixing holes by screws.

4. The two-stroke gasoline engine fuel injection ECU electronic control unit for the unmanned aerial vehicle of claim 1, characterized in that the sensors include an engine temperature sensor, a rotational speed signal sensor, an air temperature sensor and an intake air flow sensor of the engine.

5. The two-stroke gasoline engine fuel injection ECU for the unmanned aerial vehicle as claimed in claim 1, wherein the ECU is further provided with an atmospheric pressure sensor, the atmospheric pressure sensor can collect changes of atmospheric pressure in real time, and the ECU calculates the altitude of the engine during operation to automatically correct the fuel injection amount, so that the engine can stably operate in high altitude environment.

6. The two-stroke gasoline engine fuel injection ECU for the unmanned aerial vehicle of claim 1, wherein the signal of the increase or decrease of the throttle opening is fed back to the ECU mainboard through the actuator output socket to control the micro high-pressure oil pump, the micro high-pressure oil pump controls the oil nozzle to increase or decrease the oil injection pulse width through the self-contained control microcomputer, the torque of the engine is increased or decreased, and the engine tension is changed to control the flight speed of the unmanned aerial vehicle.