General gasoline engine valve body controlled by engine control unit

Abstract

The utility model relates to a general gasoline engine valve body controlled by an engine control unit, which comprises a second fuel filling port, a driving motor, a valve body, a fuel injector, a fuel cap and a three-in-one sensor, one end of the second fuel filling port is connected with the valve body, and the other end of the second fuel filling port is connected with a fuel cabin. The driving motor, the oil sprayer and the three-in-one sensor are fixedly arranged on the valve body, the oil cap is arranged on the oil sprayer in a sleeving mode, the oil cap is connected with an oil tank through an oil pipe and used for filling first fuel, the driving motor, the oil sprayer and the three-in-one sensor are connected with an engine control unit, and the three-in-one sensor is used for detecting temperature, pressure and vacuum change information of the valve body. The information is transmitted to the engine control unit, and the engine control unit controls the driving motor to adjust the air inflow of the valve body and controls the fuel injection quantity of the fuel injector after receiving the information transmitted by the three-in-one sensor. Compared with the prior art, by arranging the second fuel filling port, the fuel consumption is optimized, and the use cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gasoline engine valve body structures, in particular to an engine-connected valve body controlled by an engine control unit. Background Art

[0002] The engine operating system, also known as the engine management system (EMS), uses the engine electronic control unit (ECU) as the control center. It uses sensors installed in various parts of the engine to measure various engine operating parameters. According to the control program pre-set by the ECU, it accurately controls the fuel injection amount, injection time, ignition advance angle, etc., so that the engine can operate in the best state, with the best power output, the most economical fuel consumption and emissions that meet regulatory requirements under various operating conditions.

[0003] Simply put, the ECU's operating principle is to control the fuel mixture (air-fuel ratio) and spark timing (ignition advance and duration) based on feedback from sensors connected to the engine. Controlling the fuel mixture and ignition timing is quite complex. The ECU requires data from multiple sensors to achieve optimal control of the system. The ECU needs to know vehicle speed, engine speed, crankshaft position, air quality (oxygen content), engine temperature, engine load, throttle position, throttle rate of change, transmission gear, exhaust emissions, and more.

[0004] General engine, that is, general small gasoline engine, refers to gasoline engine other than those used in vehicles and special purposes. It is a small power machinery mostly used in agriculture, gardening and home, and its rated power is generally below 30kW.

[0005] The main valve bodies currently used in small generators are carburetors or single-fuel intake valve bodies. However, the existing carburetors or single-fuel intake valve bodies are not used in conjunction with the engine control unit, making it impossible to achieve precise control of the oil volume.

[0006] With the increasing demands for general-purpose engine emissions, environmental protection, and fuel consumption, it is critical to develop a general-purpose engine valve body suitable for current use. Utility Model Content

[0007] The purpose of the utility model is to provide a general-purpose valve body controlled by an engine control unit. The general-purpose valve body is provided with a second fuel filling port, so that it can provide more fuel options while optimizing fuel consumption, thereby increasing the applicability and practicality of general-purpose machinery and reducing the cost of use; the general-purpose valve body is provided with a three-in-one sensor connected to the engine control unit, which can accurately calculate the basic injection time, injection amount and ignition advance angle, etc.

[0008] The purpose of the utility model can be achieved through the following technical solutions:

[0009] A fuel valve body controlled by an engine control unit includes a second fuel filling port, a drive motor, a valve body, a fuel injector, a fuel cap and a three-in-one sensor.

[0010] One end of the second fuel filling port is connected to the valve body, and the other end of the second fuel filling port is connected to the fuel tank. The driving motor, the injector and the three-in-one sensor are fixed on the valve body. The oil cap is sleeved on the injector and connected to the fuel tank through an oil pipe. The oil cap is used to fill the first fuel.

[0011] The drive motor, injector, and three-in-one sensor are connected to the engine control unit. The three-in-one sensor is used to detect the temperature, pressure, and vacuum change information of the valve body and transmit the information to the engine control unit. After receiving the information transmitted by the three-in-one sensor, the engine control unit controls the drive motor to adjust the air intake volume of the valve body and control the fuel injection volume of the injector.

[0012] In one embodiment of the present invention, an air intake passage is provided through the valve body, a throttle plate is provided in the middle of the air intake passage and is connected to a throttle shaft, the throttle shaft is provided below the throttle plate, and the throttle shaft is used to control the opening angle of the throttle plate.

[0013] In one embodiment of the present invention, the drive motor is fixedly mounted on the drive motor assembly surface by bolts, and the drive motor is used to control the rotation of the throttle shaft on the valve body through the engine control unit to control the air intake volume of the valve body.

[0014] In one embodiment of the present invention, the three-in-one sensor is arranged on the three-in-one sensor assembly surface of the valve body, the three-in-one sensor is symmetrical with the drive motor, and the three-in-one sensor is used to detect the opening of the throttle shaft rotated by the drive motor.

[0015] In one embodiment of the present utility model, the valve body is further provided with an intake air temperature detection hole and an intake air pressure detection hole, and the temperature probe of the three-in-one sensor is extended into the intake air temperature detection hole to detect the temperature of the air entering the engine;

[0016] The pressure detection hole of the three-in-one sensor is connected to the intake pressure detection hole and is used to detect the absolute pressure of the intake manifold behind the throttle shaft.

[0017] In one embodiment of the present invention, the valve body is further provided with a fuel injection port of the fuel injector, and the fuel injector is fixed to the fuel injection port of the fuel injector by means of bolts.

[0018] In one embodiment of the present invention, a second fuel filling hole is further provided on the valve body, and the second fuel filling port is assembled with the valve body through the second fuel filling hole. The second fuel filling port and the second fuel filling hole are fitted in an interference fit and are pressed in by an assembly machine.

[0019] In one embodiment of the present invention, the second fuel filling port is connected to the fuel tank via a fuel connecting pipe, and a solenoid valve is provided on the fuel connecting pipe, and the solenoid valve is used to control the on / off of the fuel connecting pipe.

[0020] In one embodiment of the present invention, the second fuel filling port is provided with a groove for connecting and fixing the fuel connecting pipe.

[0021] As a preferred technical solution, the second fuel filling port is a metal part, and the second fuel added to the second fuel filling port can be LPG, CNG or other fuels.

[0022] As a preferred technical solution, the oil cap is provided with a quick connector that cooperates with the oil pipe to facilitate disassembly; the oil cap is also provided with a bolt positioning hole, which is fixed to the valve body by bolts.

[0023] In one embodiment of the present invention, the drive motor, the injector, and the three-in-one sensor are connected to the engine control unit via a wiring harness.

[0024] The working principle of this utility model is as follows:

[0025] The valve body in the utility model is assembled on a general-purpose machine for use. When the general-purpose machine is running, the engine control unit detects its own load through feedback information from the three-in-one sensor, and controls the drive motor to rotate the throttle shaft, thereby automatically changing the air intake volume of the valve body, so that the generator can output corresponding outputs under various working conditions.

[0026] When the air intake volume of the valve body changes, the three-in-one sensor detects the vacuum change in the valve body's outlet end according to the engine speed and load, and then converts it into a signal voltage through the change of the sensor's internal resistance and sends it to the engine control unit (ECU). The engine control unit controls and corrects the injection amount and the valve body throttle shaft angle based on the size of this signal voltage, thereby adjusting the injector to control the injection amount.

[0027] The valve body provided by this utility model can be filled with at least two types of fuel. The first is to connect a pipe from the oil cap end to the fuel tank and inject 92-grade gasoline. The second is to connect a pipe from the second fuel filling port to the fuel tank and inject LPG, CNG, and other fuels. Both filling methods are controlled by the ECU. For the first type of 92-grade gasoline filling, the ECU controls the injection timing of the injector; for the second type of fuel filling, a solenoid valve controls the opening and closing of the fuel connection pipe between the second fuel filling port and the fuel tank.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. This new model adds an engine control unit and a corresponding three-in-one sensor to adaptively control the valve body. This allows the engine control unit to accurately calculate basic injection timing, injection volume, and ignition advance angle based on sensor signals under each load, enabling general-purpose machinery to achieve the required performance while reducing fuel consumption and meeting emission and environmental standards.

[0030] 2. The second fuel filler port and solenoid valve control design of this utility model provides more fuel options while optimizing fuel consumption, increasing the applicability and practicality of general-purpose machinery and reducing operating costs. The design also adopts a highly integrated approach, assembling the drive motor, injector, three-in-one sensor, and fuel filler port into the valve body, saving both space and weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a front view structural diagram of the valve body of the utility model;

[0032] Figure 2 This is a schematic diagram of the oblique structure of the valve body of the utility model;

[0033] Figure 3 This is a top view of the valve body of the utility model;

[0034] Figure 4 This is a side view of the valve body of the utility model;

[0035] Figure 5 This is a schematic diagram of the position and connection of the solenoid valve in the present utility model;

[0036] Figure 6 This is a structural diagram of the second fuel filling port in the present utility model.

[0037] Figure 7 This is the main view of the air intake in the utility model;

[0038] Figure 8 This is the air intake side view of the utility model;

[0039] Figure 9 This is a front view structural diagram of the valve body in the present utility model;

[0040] Figure 10 for Figure 9 Cross-sectional view of middle AA;

[0041] Figure 11 This is a schematic diagram of the oblique structure of the valve body in the present utility model;

[0042] Figure 12 This is a front view of the valve body in the utility model;

[0043] Figure 13 It is a top view of the valve body in the utility model.

[0044] Explanation of the accompanying figures: 1. Second fuel filling port, 2. Drive motor, 3. Valve body, 301. Intake duct, 302. Throttle plate, 303. Throttle shaft, 304. Three-in-one sensor assembly surface, 305. Drive motor assembly surface, 4. Injector, 5. Oil cap, 6. Three-in-one sensor, 7. Fuel connecting pipe, 8. Solenoid valve, 9. Intake temperature detection hole, 10. Second fuel filling port, 11. Intake pressure detection hole, 12. Injector nozzle, A, intake end. DETAILED DESCRIPTION

[0045] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0046] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0047] In the description of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0049] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0050] Example 1

[0051] See also Figures 1 to 13 This embodiment provides a valve body controlled by an engine control unit, comprising a second fuel filling port 1, a drive motor 2, a valve body 3, a fuel injector 4, a fuel cap 5 and a three-in-one sensor 6.

[0052] One end of the second fuel filling port 1 is connected to the valve body 3, and the other end of the second fuel filling port 1 is connected to the fuel tank. The driving motor 2, the injector 4 and the three-in-one sensor 6 are fixed on the valve body 3. The oil cap 5 is sleeved on the injector 4. The oil cap 5 is connected to the fuel tank through an oil pipe. The oil cap 5 is used to fill the first fuel.

[0053] The drive motor 2, injector 4, and three-in-one sensor 6 are connected to the engine control unit. The three-in-one sensor 6 is used to detect the temperature, pressure and vacuum change information of the valve body 3 and transmit the information to the engine control unit. After receiving the information transmitted by the three-in-one sensor 6, the engine control unit controls the drive motor 2 to adjust the air intake volume of the valve body 3 and control the fuel injection volume of the injector 4.

[0054] In this embodiment, an air intake duct 301 is provided through the valve body 3 , a throttle plate 302 is provided in the middle of the air intake duct 301 and is connected to a throttle shaft 303 , the throttle shaft 303 is provided below the throttle plate 302 , and the throttle shaft 303 is used to control the opening angle of the throttle plate 302 .

[0055] In this embodiment, the drive motor 2 is fixedly mounted on the drive motor assembly surface 305 of the valve body 3 by bolts. The drive motor 2 is used to control the rotation of the throttle shaft 303 on the valve body 3 through the engine control unit to control the air intake volume of the valve body 3.

[0056] In this embodiment, the three-in-one sensor 6 is provided on the three-in-one sensor assembly surface 304 of the valve body 3 . The three-in-one sensor 6 is symmetrical to the drive motor 2 . The three-in-one sensor 6 is used to detect the opening of the throttle shaft 303 rotated by the drive motor 2 .

[0057] In this embodiment, the valve body 3 is further provided with an intake air temperature detection hole 9 and an intake air pressure detection hole 11. The temperature probe of the three-in-one sensor 6 extends into the intake air temperature detection hole 9 to detect the temperature of the air entering the engine.

[0058] The pressure detection hole of the three-in-one sensor 6 is connected to the intake pressure detection hole 11 for detecting the absolute pressure of the intake manifold behind the throttle shaft 303 .

[0059] In this embodiment, the valve body 3 is further provided with an injector oil injection port 12 , and the injector 4 is fixed to the injector oil injection port 12 by means of bolts.

[0060] In this embodiment, a second fuel filling hole 10 is further provided on the valve body 3, and the second fuel filling port 1 is assembled with the valve body 3 through the second fuel filling hole 10. The second fuel filling port 1 and the second fuel filling hole 10 are fitted in an interference fit and are pressed in by an assembly machine.

[0061] In this embodiment, the second fuel filling port 1 is connected to the fuel tank via a fuel connecting pipe 7 , and a solenoid valve 8 is provided on the fuel connecting pipe 7 , and the solenoid valve 8 is used to control the on / off state of the fuel connecting pipe 7 .

[0062] In this embodiment, the second fuel filling port 1 is provided with a groove for connecting and fixing the fuel connecting pipe 7 .

[0063] In this embodiment, the second fuel filling port 1 is a metal part, and the second fuel added to the second fuel filling port 1 can be LPG, CNG or other fuels.

[0064] In this embodiment, the oil cap 5 is provided with a quick connector that cooperates with the oil pipe to facilitate disassembly; the oil cap 5 is also provided with a bolt positioning hole and is fixed to the valve body 3 by bolts.

[0065] In this embodiment, the drive motor 2, the injector 4, and the three-in-one sensor 6 are connected to the engine control unit via a wiring harness.

[0066] The above description of the embodiments is intended to facilitate understanding and use of the utility model by those skilled in the art. Those skilled in the art will readily be able to make various modifications to these embodiments and apply the general principles described herein to other embodiments without requiring inventive effort. Therefore, the utility model is not limited to the above-described embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of this utility model without departing from the scope of this utility model should be within the scope of protection of this utility model.

Claims

1. A valve body controlled by an engine control unit, characterized in that: It comprises a second fuel filling port (1), a driving motor (2), a valve body (3), a fuel injector (4), a fuel cap (5) and a three-in-one sensor (6). One end of the second fuel filling port (1) is connected to the valve body (3), and the other end of the second fuel filling port (1) is connected to the fuel tank. The driving motor (2), the fuel injector (4) and the three-in-one sensor (6) are fixedly arranged on the valve body (3). The oil cap (5) is sleeved on the fuel injector (4). The oil cap (5) is connected to the fuel tank through an oil pipe. The oil cap (5) is used to fill the first fuel. The driving motor (2), the fuel injector (4), and the three-in-one sensor (6) are connected to an engine control unit, and the three-in-one sensor (6) is used to detect temperature, pressure, and vacuum change information of the valve body (3).

2. The engine control unit controlled valve body according to claim 1, characterized in that: An air intake passage (301) is provided through the valve body (3). A throttle plate (302) is provided in the middle of the air intake passage (301) and is connected to a throttle shaft (303). The throttle shaft (303) is provided below the throttle plate (302). The throttle shaft (303) is used to control the opening angle of the throttle plate (302).

3. The engine control unit controlled valve body according to claim 2, characterized in that: The drive motor (2) is fixedly mounted on the drive motor assembly surface (305) of the valve body (3) by means of bolts. The drive motor (2) is used to control the rotation of the throttle shaft (303) on the valve body (3) through an engine control unit, thereby controlling the air intake volume of the valve body (3).

4. The engine control unit controlled valve body according to claim 3, characterized in that: The three-in-one sensor (6) is arranged on the three-in-one sensor assembly surface (304) of the valve body (3), the three-in-one sensor (6) is symmetrical with the drive motor (2), and the three-in-one sensor (6) is used to detect the opening of the rotating throttle shaft (303) of the drive motor (2).

5. The engine control unit controlled valve body according to claim 2, characterized in that: The valve body (3) is also provided with an intake air temperature detection hole (9) and an intake air pressure detection hole (11), and the temperature probe of the three-in-one sensor (6) extends into the intake air temperature detection hole (9) to detect the temperature of air entering the engine; The pressure detection hole of the three-in-one sensor (6) is connected to the intake pressure detection hole (11) and is used to detect the absolute pressure of the intake manifold behind the throttle shaft (303).

6. The engine control unit controlled valve body according to claim 1, characterized in that: The valve body (3) is also provided with an injector oil injection port (12), and the injector (4) is fixed to the injector oil injection port (12) by means of bolts.

7. The engine control unit controlled valve body according to claim 1, characterized in that: The valve body (3) is also provided with a second fuel filling hole (10), and the second fuel filling port (1) is assembled with the valve body (3) through the second fuel filling hole (10).

8. The engine control unit controlled valve body according to claim 1, characterized in that: The second fuel filling port (1) is connected to the fuel tank via a fuel connecting pipe (7); a solenoid valve (8) is provided on the fuel connecting pipe (7); and the solenoid valve (8) is used to control the on / off of the fuel connecting pipe (7).

9. The engine control unit controlled valve body according to claim 1, characterized in that: The second fuel filling port (1) is provided with a groove for connecting and fixing the fuel connecting pipe (7).

10. The engine control unit controlled valve body according to claim 1, characterized in that: The drive motor (2), the fuel injector (4), and the three-in-one sensor (6) are connected to the engine control unit via a wiring harness.

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