CN116927960A - Universal small gasoline engine and multi-fuel control device thereof - Google Patents

Universal small gasoline engine and multi-fuel control device thereof Download PDF

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Publication number
CN116927960A
CN116927960A CN202210349284.XA CN202210349284A CN116927960A CN 116927960 A CN116927960 A CN 116927960A CN 202210349284 A CN202210349284 A CN 202210349284A CN 116927960 A CN116927960 A CN 116927960A
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CN
China
Prior art keywords
gas
fuel
control device
gasoline engine
general
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210349284.XA
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Chinese (zh)
Inventor
梁世进
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huayi Electromechanical Co ltd
Original Assignee
Huayi Electromechanical Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huayi Electromechanical Co ltd filed Critical Huayi Electromechanical Co ltd
Priority to CN202210349284.XA priority Critical patent/CN116927960A/en
Publication of CN116927960A publication Critical patent/CN116927960A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0602—Control of components of the fuel supply system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0626—Measuring or estimating parameters related to the fuel supply system
    • F02D19/0628—Determining the fuel pressure, temperature or flow, the fuel tank fill level or a valve position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02D19/0673—Valves; Pressure or flow regulators; Mixers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02D19/0686—Injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

A general small-sized petrol engine and a multi-fuel control device thereof, the general small-sized petrol engine comprises a multi-fuel control device, the multi-fuel control device comprises a fuel oil electronic injection device and a fuel gas control device, the fuel gas control device comprises: the fuel gas controller is arranged on the body of the general small-sized petrol engine and corresponds to a fuel gas chamber on the body, and is connected with the ECU of the fuel oil electronic injection device; the spray pipe is arranged in the gas chamber, one end of the spray pipe is communicated with a throttle valve hole of the general small-sized gasoline engine, and the other end of the spray pipe is connected with the gas controller; the pressure sensor is arranged on a pressure chamber on the body and connected with the ECU, and the gas chamber is communicated with the pressure chamber; one end of the air inlet pipe is communicated with the fuel gas chamber, and the other end of the air inlet pipe is communicated with external fuel gas; the gas controller adjusts the opening of the spray pipe to control the gas flow, and the gas pressure sensor collects the working pressure data of the gas and transmits the working pressure data to the ECU to correct the flow data.

Description

Universal small gasoline engine and multi-fuel control device thereof
Technical Field
The invention relates to an electronic injection throttle valve, in particular to a general small-sized petrol engine and a multi-fuel control device thereof.
Background
The small-sized petrol engine electric spray control device in the prior art basically adopts an electric spray control mode of single fuel oil, the fuel gas is controlled to flow through a mechanical diaphragm type flow valve, the flow precision is relatively unstable, when the air supply pressure changes, the flow fluctuation is larger, the operation steps of engine starting are more complex, the use is inconvenient, and the operation holiday feeling is worse.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a general small-sized petrol engine and a multi-fuel control device thereof aiming at the defects in the prior art.
In order to achieve the above object, the present invention provides a multi-fuel control device for a general-purpose small-sized gasoline engine, wherein the multi-fuel control device comprises a fuel electronic injection device and a fuel gas control device, and the fuel gas control device comprises:
the fuel gas controller is arranged on the body of the general small-sized gasoline engine and corresponds to a fuel gas chamber on the body, and is connected with the ECU of the fuel oil electronic injection device;
the spray pipe is arranged in the gas chamber, one end of the spray pipe is communicated with a throttle valve hole of the general small-sized gasoline engine, and the other end of the spray pipe is connected with the gas controller;
the pressure sensor is arranged on the pressure chamber on the body and is connected with the ECU, and the gas chamber is communicated with the pressure chamber; and
one end of the air inlet pipe is communicated with the fuel gas chamber, and the other end of the air inlet pipe is communicated with external fuel gas;
the gas controller adjusts the opening of the spray pipe to control the gas flow, and the gas pressure sensor collects working pressure data of the gas and transmits the working pressure data to the ECU to correct the flow data.
The multi-fuel control device of the general small gasoline engine is characterized in that the fuel gas controller is an electromagnetic valve or a stepping motor, and the electromagnetic valve is in sealing connection with the fuel gas chamber through a sealing ring.
The multi-fuel control device of the general small gasoline engine is characterized in that an elastic resetting piece is arranged on the movable core of the electromagnetic valve, and a sealing gasket is arranged at the joint of the electromagnetic valve and the spray pipe.
The multi-fuel control device of the general small gasoline engine, wherein the gas chamber is communicated with the pressure chamber through a pore canal.
The multi-fuel control device of the general small gasoline engine, wherein the pressure sensor is in sealing connection with the pressure chamber through a sealing ring.
The multi-fuel control device of the general small gasoline engine is characterized in that the electromagnetic valve and the pressure sensor are respectively connected with the ECU through plug-in components or lead wires.
The multi-fuel control device of the general small gasoline engine, wherein the oblique angle of any direction and angle is arranged at one end of the spray pipe communicated with the throttle valve hole.
The multi-fuel control device of the general small gasoline engine, wherein the electromagnetic valve and the pressure sensor are integrated into an integral structural member.
The multi-fuel control device of the general small gasoline engine further comprises an oxygen sensor, wherein the oxygen sensor is arranged on an exhaust pipe of the general small gasoline engine and connected with the ECU, and is used for collecting oxygen content data discharged by tail gas of the general small gasoline engine and transmitting the oxygen content data to the ECU, and the ECU corrects flow parameters according to the oxygen content data so as to ensure the air-fuel ratio of normal operation of the engine.
In order to better achieve the above object, the present invention also provides a general-purpose small-sized gasoline engine, which comprises the multi-fuel control device.
The invention has the technical effects that:
the invention can realize multi-fuel application on the general small gasoline engine, improves the control precision of the gas flow, can automatically correct the flow according to the gas pressure, and can fully utilize the electric control system of the gas by adopting the flow control mode of the electromagnetic valve or the stepping motor, and the engine can operate in the range of ideal air-fuel ratio by closed loop control of the oxygen sensor, thereby playing the roles of energy conservation and emission reduction.
The invention will now be described in more detail with reference to the drawings and specific examples, which are not intended to limit the invention thereto.
Drawings
FIG. 1 is a front view of an embodiment of the present invention;
FIG. 2 is a right side view of FIG. 1;
FIG. 3 is a left side view of FIG. 1;
FIG. 4 is a top view of FIG. 1;
FIG. 5 is a bottom view of FIG. 1;
FIG. 6 is a cross-sectional view A-A of FIG. 1;
fig. 7 is a B-B cross-sectional view of fig. 2.
Wherein reference numerals are used to refer to
1 body
2 electromagnetic valve
3 moving core
4 sealing gasket
5 elastic restoring piece
6 gas chamber
7 spray pipe
8 throttle valve holes
9 pressure chamber
10 pore canal
11 pressure sensor
12 sealing ring
13 air inlet pipe
14ECU
15 sealing ring
16 oil sprayer
Detailed Description
The structural and operational principles of the present invention are described in detail below with reference to the accompanying drawings:
referring to fig. 1 to 7, fig. 1 is a front view of an embodiment of the present invention, fig. 2 is a right side view of fig. 1, fig. 3 is a left side view of fig. 1, fig. 4 is a top view of fig. 1, fig. 5 is a bottom view of fig. 1, fig. 6 is a cross-sectional view A-A of fig. 1, and fig. 7 is a cross-sectional view B-B of fig. 2. The invention relates to a general small-sized petrol engine, which comprises a main body 1 and a multi-fuel control device arranged on the main body 1, wherein the multi-fuel control device comprises a fuel oil electronic injection device and a fuel gas control device, a fuel injector 16 of the original fuel oil electronic injection device can be externally connected with fuel oil independently, and the general small-sized petrol engine and the fuel oil electronic injection device are both mature prior art, so that the description is omitted herein, and only the fuel gas control device of the invention is described in detail below.
The gas control device of the present invention comprises: the fuel gas controller is arranged on the body 1 of the general small-sized petrol engine and is arranged corresponding to the fuel gas chamber 6 on the body 1, and the fuel gas controller is connected with the ECU14 of the fuel oil electronic injection device; a spray pipe 7, which is arranged in the gas chamber 6, wherein one end of the spray pipe 7 is communicated with a throttle hole 8 of the general small-sized petrol engine, and the other end of the spray pipe 7 is connected with the gas controller; a pressure sensor 11 mounted on the pressure chamber 9 of the body 1 and connected to the ECU14, the gas chamber 6 communicating with the pressure chamber 9 through a duct 10; and an air inlet pipe 13, one end of which is communicated with the gas chamber 6, and the other end of the air inlet pipe 13 is communicated with external gas; wherein the gas controller adjusts the opening of the nozzle 7 to control the gas flow, and the gas pressure sensor 11 collects the working pressure data of the gas and transmits the working pressure data to the ECU14 to correct the flow data.
In the present embodiment, the electromagnetic valve 2 is taken as an example, and the electromagnetic valve 2 can be arranged on the main body 1 along the central axis of the throttle hole 8 in any direction according to different model structures. The gas chamber 6 is arranged on the outer side of the upper portion of the body 1, the electromagnetic valve 2 is in sealing connection with the gas chamber 6 through a sealing ring 15, a sealing gasket 4 is arranged at the joint of the electromagnetic valve 2 and the spray pipe 7, the spray pipe 7 is pressed in the middle of the gas chamber 6, one end of the spray pipe 7 is communicated with the throttle valve hole 8, and the end face of the other end is matched with the sealing gasket 4 of the electromagnetic valve 2 arranged on the movable core 3. An elastic restoring element 5 is arranged on the movable core 3 of the electromagnetic valve 2, and the elastic restoring element 5 is preferably a restoring spring. The pressure sensor 11 is in sealing connection with the pressure chamber 9 through a sealing ring 12, and the pressure sensor 11 plays a sealing role through the sealing ring 12. The solenoid valve 2 and the pressure sensor 11 are connected to the ECU14 via a plug-in or a lead wire, respectively. The end of the spray pipe 7 communicated with the throttle valve hole 8 is provided with an oblique angle with any direction and angle. The solenoid valve 2 and the pressure sensor 11 may be integrated into a single structural member, i.e. the pressure sensor 11 may be integrated with the solenoid valve 2 without being separately installed.
The gas control device of this embodiment may further include an oxygen sensor, which is installed on the exhaust pipe of the universal small-sized gasoline engine and connected to the ECU14, and is configured to collect oxygen content data of exhaust gas of the universal small-sized gasoline engine and transmit the oxygen content data to the ECU14, where the ECU14 corrects the flow parameter according to the oxygen content data, so as to ensure the air-fuel ratio of the normal operation of the engine.
Because the gas pressure before entering the spray pipe 7 fluctuates or has upper and lower limit deviation, the same opening degree is opened by the spray pipe 7, the change of the pressure can cause the change of the gas flow, the pressure sensor 11 detects the pressure change and sends the detected pressure value to the ECU14, and the ECU14 automatically controls the power-on time of the duty ratio electromagnetic valve 2 or adjusts the step number of the stepping motor to change the stroke so as to meet the gas flow under the proper working condition according to the read gas pressure value. The solenoid valve 2 of the present embodiment preferably employs a duty ratio solenoid valve 2, and the longer the energization time, the larger the flow rate of the gas into the nozzle 7, and conversely, the smaller the flow rate. The stepper motor can control the height matched with the spray pipe 7 through the screw rod by adjusting the number of steps, when the opening is larger, the flow of the fuel gas is larger, and otherwise, the flow of the fuel gas is reduced.
The invention can realize the application of multiple fuels on the general small-sized petrol engine, when the engine works, the ECU14 is used for controlling the electromagnetic valve 2, the opening degree of the spray pipe 7 is controlled by the electromagnetic valve 2 to control the gas flow required by the engine, the pressure sensor 11 is used for automatically compensating the flow change generated by different gas supply pressures, ensuring the working stability of the engine, improving the control precision of the gas flow, and automatically carrying out flow correction according to the gas pressure, and the engine can fully utilize the electric control system of the gas due to the adoption of the flow control mode of the electromagnetic valve 2 or the stepping motor; the oxygen sensor is used for closed-loop control, so that the engine runs in the range of the ideal air-fuel ratio, and the effects of energy conservation and emission reduction are achieved.
Of course, the present invention is capable of other various embodiments and its several details are capable of modification and variation in light of the present invention, as will be apparent to those skilled in the art, without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (10)

1. The utility model provides a many fuel controlling means of general small-size gasoline engine which characterized in that includes fuel electronic injection device and gas controlling means, gas controlling means includes:
the fuel gas controller is arranged on the body of the general small-sized gasoline engine and corresponds to a fuel gas chamber on the body, and is connected with the ECU of the fuel oil electronic injection device;
the spray pipe is arranged in the gas chamber, one end of the spray pipe is communicated with a throttle valve hole of the general small-sized gasoline engine, and the other end of the spray pipe is connected with the gas controller;
the pressure sensor is arranged on the pressure chamber on the body and is connected with the ECU, and the gas chamber is communicated with the pressure chamber; and
one end of the air inlet pipe is communicated with the fuel gas chamber, and the other end of the air inlet pipe is communicated with external fuel gas;
the gas controller adjusts the opening of the spray pipe to control the gas flow, and the gas pressure sensor collects working pressure data of the gas and transmits the working pressure data to the ECU to correct the flow data.
2. The multi-fuel control device of the general small-sized petrol engine as set forth in claim 1, characterized in that the gas controller is a solenoid valve or a stepping motor, the solenoid valve is connected with the gas chamber by a sealing ring.
3. The multi-fuel control device of the general small-sized petrol engine as set forth in claim 2, characterized in that the movable core of the electromagnetic valve is provided with an elastic resetting piece, and the joint of the electromagnetic valve and the spray pipe is provided with a sealing gasket.
4. The multi-fuel control device of a general-purpose small-sized gasoline engine according to claim 3, wherein the gas chamber is in communication with the pressure chamber through a duct.
5. The multi-fuel control device of a general-purpose small-sized gasoline engine according to claim 3, wherein the pressure sensor is hermetically connected to the pressure chamber through a seal ring.
6. The multi-fuel control device of a general-purpose small gasoline engine according to claim 3, wherein the solenoid valve and the pressure sensor are connected to the ECU through a plug-in unit or a lead wire, respectively.
7. A multi-fuel control device for a general purpose small gasoline engine according to claim 3, wherein the end of the nozzle communicating with the throttle valve hole is provided with a bevel angle of any direction and angle.
8. The multi-fuel control device for a general purpose small gasoline engine according to claim 3, wherein the electromagnetic valve and the pressure sensor are integrated into a single structural member.
9. The multi-fuel control device of the general purpose small gasoline engine as set forth in claim 3, further comprising an oxygen sensor installed on an exhaust pipe of the general purpose small gasoline engine and connected with the ECU for collecting oxygen content data of exhaust gas of the general purpose small gasoline engine and transmitting the data to the ECU, wherein the ECU corrects flow parameters according to the oxygen content data to ensure an air-fuel ratio of normal operation of the engine.
10. A universal small gasoline engine comprising a multi-fuel control device as claimed in any one of claims 1 to 9.
CN202210349284.XA 2022-04-01 2022-04-01 Universal small gasoline engine and multi-fuel control device thereof Pending CN116927960A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210349284.XA CN116927960A (en) 2022-04-01 2022-04-01 Universal small gasoline engine and multi-fuel control device thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210349284.XA CN116927960A (en) 2022-04-01 2022-04-01 Universal small gasoline engine and multi-fuel control device thereof

Publications (1)

Publication Number Publication Date
CN116927960A true CN116927960A (en) 2023-10-24

Family

ID=88376109

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210349284.XA Pending CN116927960A (en) 2022-04-01 2022-04-01 Universal small gasoline engine and multi-fuel control device thereof

Country Status (1)

Country Link
CN (1) CN116927960A (en)

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