Fuel oil control device and control method for flameout motor on mechanical diesel engine

Abstract

The invention relates to a flameout motor fuel oil control device on a mechanical diesel engine. The flameout motor fuel oil control device comprises a fuel oil pump assembly, a parking handle, a stay wire support, an elastic damper, a stay wire, a motor support, a motor assembly and a circuit. The stay wire bracket is fixedly arranged at the rear end of the fuel pump assembly; the parking handle is fixedly arranged on one side of the rear end of the fuel pump assembly through a bolt; one end of the elastic damper is movably connected with the parking handle, and the other end is fixedly connected with the stay wire; the end, away from the elastic damper, of the pull wire is in transmission connection with the motor assembly. The motor assembly is fixedly mounted on the motor bracket; and the motor assembly is in electric signal coupling with a whole vehicle control circuit through a circuit. The invention further relates to a control method using the flameout motor fuel control device on the mechanical diesel engine. The fuel cut-off electromagnetic valve solves the problems that a traditional fuel cut-off electromagnetic valve fails due to clamping stagnation, and parts of the fuel cut-off electromagnetic valve fail due to the fact that vibration acceleration of equipment is large. The reliability and the high temperature resistance are improved, and the failure is reduced.

Description

Technical Field

[0001] This invention relates to the field of fuel system technology for mechanical diesel engines, and more specifically to a fuel control device and control method for a generator stop motor on a mechanical diesel engine. Background Technology

[0002] Mechanical diesel engines all use traditional fuel cut-off solenoid valves. When operating in Southeast Asia and the Middle East, the heavy sandstorms accelerate the wear of the solenoid valve lever mechanism, leading to failure and jamming of the traditional fuel cut-off solenoid valve. The dust cover is also prone to breakage. The large vibration of the entire equipment can easily cause failure of electrical components such as the fuel cut-off solenoid valve coil / moving iron core and cracking of the bracket. At the same time, the high ambient temperature increases the engine compartment temperature, causing the dust cover and rolling strip to age and crack easily. All of these factors make the failure rate of traditional fuel cut-off solenoid valves remain high. Therefore, it is urgent to develop a completely new fuel control device to replace the traditional fuel cut-off solenoid valve. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a fuel control device and method for a diesel engine with a shut-off motor. The purpose is to solve the problems of traditional fuel cut-off solenoid valves becoming stuck and failing, and the failure of parts due to excessive vibration of the equipment; thereby improving reliability, high temperature resistance, and reducing failures.

[0004] To solve the above problems, the technical solution provided by the present invention is as follows: A fuel control device for a kill switch motor on a mechanical diesel engine includes a fuel pump assembly, a stop lever, a cable bracket, an elastic damper, a cable, a motor bracket, a motor assembly, and a circuit, wherein: The cable bracket is fixedly mounted at the rear end of the fuel pump assembly; the parking handle is fixedly mounted on one side of the rear end of the fuel pump assembly by bolts, and the fuel pump assembly drives the parking handle to move in a circular motion around the bolt; one end of the elastic damper is movably connected to the parking handle, and the other end is fixedly connected to the cable; the end of the cable away from the elastic damper is connected to the motor assembly for transmission, and is driven by the motor assembly to move back and forth in the front-rear direction; the motor assembly is fixedly mounted on the motor bracket; the motor assembly is electrically coupled to the vehicle control circuit through the circuit.

[0005] Preferably, the motor assembly includes a motor, a worm gear mechanism, a circuit commutator, and a rotary column sliding mechanism; the motor is driven to the worm gear mechanism via a rotating shaft; the edge of the worm gear mechanism has a rotary column; the center of the worm gear has the circuit commutator for controlling the opening and closing of the circuit according to the rotation angle of the worm gear; the rotary column is embedded in the sliding groove of the rotary column sliding mechanism and is movably connected to the sliding groove; the sliding groove is driven to the guide rail of the rotary column sliding mechanism; the guide rail is fixedly connected to one end of the pull wire.

[0006] Preferably, the circuit commutator is a copper conductive disc-shaped structure; a B terminal for providing positive power is provided at the 0-point direction on the surface of the circuit commutator; a ground terminal is provided at the center of the circuit commutator; a P1 terminal for connecting to the control circuit is provided at the 3-point direction on the surface of the circuit commutator; a P2 terminal for connecting to the control circuit is provided at the 9-point direction on the surface of the circuit commutator; a rotatable gourd-shaped rotating structure is provided at the center of the circuit commutator; the tail of the gourd-shaped rotating structure is used to connect to the P1 terminal or the P2 terminal according to the rotation angle of the turbine.

[0007] Preferably, the fuel pump assembly, the parking handle, and the cable bracket are designed as an integrated pre-assembled unit to ensure stable cable operation.

[0008] Preferably, the side of the parking handle has an S-shaped structure.

[0009] Preferably, the connection end between the parking handle and the elastic damper is provided with a U-shaped structure; the connection point between the elastic damper and the parking handle is provided with a cylindrical end that matches the U-shaped structure, and the cylindrical end is inserted into the U-shaped structure so that the elastic damper can rotate flexibly and cannot be dislodged.

[0010] Preferably, the cable bracket is fixed to the rear end of the fuel pump assembly at three points by three bolts.

[0011] Preferably, the bottom of the cable bracket is provided with a U-shaped groove; the end of the elastic damper away from the parking handle is inserted into the U-shaped groove of the cable bracket, and is clamped and fixed on both sides of the U-shaped groove by nuts and washers.

[0012] Preferably, the length of the pull wire is adjusted according to the overall machine layout.

[0013] A control method utilizing the aforementioned engine shutdown motor fuel control device on a mechanical diesel engine includes a start-up and operating state, a key-removal engine shutdown state, and a shutdown state, wherein: The startup and operational status includes the following steps: Sa1. Turn the key to the ON position to power on the motor; Sa2. The worm gear mechanism inside the motor rotates and is controlled by the rotary column sliding mechanism to release and push out the pull wire; Sa3. The parking handle is screwed into the oil supply position under the action of the elastic damper and the motor, and at the same time the motor is de-energized through the circuit commutator. The key-out and engine-off state includes the following steps: Sb1. Turn the key to the OFF position to power on the motor; Sb2. The worm gear mechanism inside the motor rotates and controls the pull wire to be pulled to the right through the rotary column sliding mechanism; Sb3. After the pull cable reaches the right stop position, the power to the reversing wheel is cut off through the circuit; the parking handle cuts off the fuel pump assembly, thus stopping the machine; The shutdown state includes the following steps: Sc1. Turn the key to the OFF position, and the motor is in a power-off state; Sc2. The worm gear mechanism controls the cable to lock at the right dead center position, and simultaneously controls the motor to be de-energized and the cable to be locked.

[0014] Compared with the prior art, the present invention has the following advantages: 1. Because the fuel pump assembly, parking handle, and cable bracket of the present invention adopt an integrated design, the cable pulling action is stable, and the fuel pump parking handle is provided and guaranteed by mechanical force in the fuel supply position, making the function more reliable.

[0015] 2. Since the motor of the present invention is in a "non-working" state and has no load when the engine is working, it improves the traditional oil cut-off solenoid valve jamming and enhances reliability.

[0016] 3. Since this invention does not contain an electromagnetic coil, there is no electromagnetic force decay caused by high temperature, making it more resistant to high temperatures.

[0017] 4. Because the motor assembly is located far from the oil pump in this invention, vibration conditions are improved, and vibration-induced failures are significantly reduced. The motor assembly is externally encased in dustproof and waterproof packaging, further mitigating failures caused by external dust and rain.

[0018] 5. Because this invention enables automatic power-off of the motor, damage to the bracket and handle is reduced. Attached Figure Description

[0019] Figure 1 This is a schematic front view of the overall device according to a specific embodiment of the present invention; Figure 2This is a perspective view of the overall device according to a specific embodiment of the present invention; Figure 3 This is a rear view schematic diagram of the overall device according to a specific embodiment of the present invention; Figure 4a This is a schematic side view of the parking handle according to a specific embodiment of the present invention; Figure 4b This is a schematic front view of the parking handle according to a specific embodiment of the present invention; Figure 5 This is a schematic diagram illustrating the startup and working states of a specific embodiment of the present invention; Figure 6 This is a schematic diagram of the key-removed and engine-off state according to a specific embodiment of the present invention; Figure 7 This is a schematic diagram of the shutdown state according to a specific embodiment of the present invention; Figure 8 This is a schematic diagram illustrating the working principle of the motor assembly according to a specific embodiment of the present invention; Figure 9 This is a schematic diagram of the commutator circuit according to a specific embodiment of the present invention.

[0020] The components include: 1. Fuel pump assembly, 2. Parking handle, 3. Cable bracket, 4. Elastic damper, 5. Nut and washer, 6. Cable, 7. Motor bracket, 8. Motor assembly, 9. Circuit, 810. Motor, 820. Worm gear mechanism, 830. Circuit reversing plate, 840. Rotary column slide mechanism, 811. Rotating shaft, 821. Worm gear, 822. Rotary column, 841. Slide, 842. Guide rail, 831. B terminal, 832. Grounding terminal, 833. P1 terminal, 834. P2 terminal, 835. Hoop-shaped rotating structure. Detailed Implementation

[0021] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0022] This invention application claims protection for a fuel control device for a generator stop motor on a mechanical diesel engine, such as... Figure 1 , 2 As shown in 3, 4a, and 4b, the system includes a fuel pump assembly 1, a parking handle 2, a cable bracket 3, an elastic damper 4, a cable 6, a motor bracket 7, a motor assembly 8, and a circuit 9, wherein: The cable bracket 3 is fixedly installed at the rear end of the fuel pump assembly 1; the parking handle 2 is fixedly installed on one side of the rear end of the fuel pump assembly 1 by bolts, and the fuel pump assembly 1 drives the parking handle 2 to make a circular motion around the bolt as the center; one end of the elastic damper 4 is movably connected to the parking handle 2, and the other end is fixedly connected to the cable 6; the end of the cable 6 away from the elastic damper 4 is connected to the motor assembly 8 for transmission, and is driven by the motor assembly 8 to move back and forth in the front and rear directions; the motor assembly 8 is fixedly installed on the motor bracket 7; the motor assembly 8 is coupled to the vehicle control circuit through the circuit 9.

[0023] It should be noted that, as Figure 8 , 9 As shown, the motor assembly 8 includes a motor 810, a worm gear mechanism 820, a circuit commutator 830, and a rotary column slide mechanism 840. The motor 810 is connected to the worm gear mechanism 820 via a rotating shaft 811. A rotary column 822 is provided on the edge of the worm gear 821 of the worm gear mechanism 820. A circuit commutator 830 is provided at the center of the worm gear 821 for controlling the opening and closing of the circuit according to the rotation angle of the worm gear 821. The rotary column 822 is embedded in the slide groove 841 of the rotary column slide mechanism 840 and is movably connected to the slide groove 841. The slide groove 841 is connected to the guide rail 842 of the rotary column slide mechanism 840. The guide rail 842 is fixedly connected to one end of the pull wire 6.

[0024] It should be further noted that the motor assembly 8 is equipped with dustproof and waterproof packaging.

[0025] It needs to be further explained that, such as Figure 9 As shown, the circuit commutator 830 is a copper conductive disc-shaped structure that rotates together with the turbine 821 and connects / disconnects different circuits at different angles; the surface of the circuit commutator 830 has a B terminal 831 for providing positive power at the 0 point direction; the center of the circuit commutator 830 has a ground terminal 832; the surface of the circuit commutator 830 has a P1 terminal 833 for connecting the control circuit at the 3 point direction; the surface of the circuit commutator 830 has a P2 terminal 834 for connecting the control circuit at the 9 point direction; and a rotatable gourd-shaped rotating structure 835 is provided at the center of the circuit commutator 830. The tail of the gourd-shaped rotating structure 835 is used to connect to terminal P1 833 or terminal P2 834 according to the rotation angle of turbine 821.

[0026] It should be further explained that the working principle of motor assembly 8 is as follows: When the equipment needs to be stopped, the operator flips the following switch (SW) upwards, and the current is connected along the path of "positive power supply → B terminal 831 → P2 terminal 834 → A terminal → motor 810 → ground". After the motor 810 is powered on, it is screwed on and drives the turbine 821 to rotate through the worm gear mechanism 820. The rotating column 822 on the turbine 821 is embedded in the slide groove 841. When the turbine 821 rotates 180° clockwise from its current position, the rotating column 822 on it rotates 180° accordingly. At this time, the slide groove 841 moves from left to right under the drive of the rotating column 822, thereby driving the guide rail 842 to move to the right. Finally, it overcomes the return force of the torsion spring and pulls the pull cable 6 to the right, pulling the stop handle 2 clockwise to the oil cut-off position. When the rotary column 822 is rotated to the rightmost position, the central circuit reversing wheel 830 also rotates 180°. At this time, terminal P2 834 and terminal B 831 are disconnected, and motor 810 stops rotating. At this time, cable 6 is locked at the rightmost position through worm gear mechanism 820, and the oil pump / engine is completely cut off. When the equipment needs to be started again, the driver flips the switch (SW) down. At this time, terminal B 831 and terminal P1 833 are connected, motor 810 is energized, and worm gear 821 continues to rotate 180° clockwise. At this time, the rotary column slide mechanism 840 pushes the guide rail 842 to the left, cable 6 moves to the left, and parking handle 2 returns to the leftmost position, i.e., the oil pump supply position, and locks under the action of its additional torsion spring. At this time, the oil circuit is opened, and the driver can start the engine.

[0027] It should be noted that the fuel pump assembly 1, parking handle 2, and cable bracket 3 adopt an integrated pre-assembled design to ensure stable cable operation, and are supplied as separate assemblies for easy assembly. The entire controller unit can precisely control the diesel engine shutdown, making the shutdown operation more convenient and reliable.

[0028] It should be noted that the side of the parking handle 2 has an S-shaped structure. This S-shaped structure design can accurately convert the lateral movement of the engine shutdown motor into the oil pump's oil supply / stop angle, and can also make the engine structure compact, ultimately enabling the parking handle 2 to switch efficiently between the "start position" and the "stop position".

[0029] It should be further explained that the connection end between the parking handle 2 and the elastic damper 4 is provided with a U-shaped structure; the connection between the elastic damper 4 and the parking handle 2 is provided with a cylindrical end that matches the U-shaped structure. The cylindrical end is inserted into the U-shaped structure, so that the elastic damper 4 can rotate flexibly and cannot be dislodged.

[0030] It should be noted that the cable bracket 3 is fixed to the rear end of the fuel pump assembly 1 at three points by three bolts.

[0031] It should be further explained that the bottom of the cable bracket 3 is provided with a U-shaped groove; the end of the elastic damper 4 away from the parking handle 2 is inserted into the U-shaped groove of the cable bracket 3, and is clamped and fixed on both sides of the U-shaped groove by nuts and washers 5.

[0032] It should be noted that the length of pull wire 6 is adjusted according to the overall layout of the machine.

[0033] A control method utilizing a fuel control device for a kill switch on a mechanical diesel engine: including start-up and operating states, key-removal kill state, and shutdown state, wherein: like Figure 5 As shown, the startup and operating status includes the following steps: Sa1. Turn the key to the ON position to power on motor 810; Sa2. The worm gear mechanism 820 inside the motor 810 rotates and is controlled by the rotary column slide mechanism 840 to release and push out the pull wire 6; Sa3. The parking handle 2 is screwed into the oil supply position under the action of the elastic damper 4 and the motor 810, while the motor 810 is de-energized through the circuit reversing plate 830. like Figure 6 As shown, the steps for the engine to be turned off after removing the key are as follows: Sb1. Turn the key to the OFF position to power on motor 810; Sb2. The worm gear mechanism 820 inside the motor 810 rotates and controls the pull wire 6 to be pulled to the right through the rotary column slide mechanism 840; Sb3. After the cable 6 reaches the right dead position, the power is cut off through the circuit reversing plate 830; the parking handle 2 cuts off the fuel pump assembly 1, thus stopping the engine; like Figure 7 As shown, the shutdown state includes the following steps: Sc1. Turn the key to the OFF position, and the motor 810 is in a de-energized state; Sc2. The worm gear mechanism 820 controls the cable 6 to lock at the right dead point position, and controls the motor 810 to cut off power and lock the cable 6 at the same time.

[0034] In the above detailed description, various features are combined together in a single embodiment to simplify this disclosure. This approach to disclosure should not be construed as reflecting an intention that embodiments of the claimed subject matter require more features than are explicitly stated in each claim. Rather, as reflected in the appended claims, the invention is presented with fewer features than all of the features of the single disclosed embodiment. Therefore, the appended claims are hereby explicitly incorporated into the detailed description, wherein each claim stands alone as a preferred embodiment of the invention.

[0035] The disclosed embodiments have been described above to enable any person skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments without departing from the spirit and scope of this disclosure. Therefore, this disclosure is not limited to the embodiments given herein, but is consistent with the broadest scope of the principles and novel features disclosed in this application.

[0036] The foregoing description includes examples of one or more embodiments. It is certainly impossible to describe all possible combinations of components or methods in order to describe the above embodiments, but those skilled in the art will recognize that further combinations and arrangements of the various embodiments are possible. Therefore, the embodiments described herein are intended to cover all such changes, modifications, and variations that fall within the scope of the appended claims. Furthermore, the term "comprising" as used in the specification or claims is interpreted in a manner similar to the term "including," as interpreted when used as a conjunction in the claims. Additionally, the use of any term "or" in the specification of the claims is intended to mean "non-exclusive or."

[0037] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A flameout motor fuel control device for a mechanical diesel engine, characterized by: The application relates to a parking handle device for a fuel pump assembly, which comprises a fuel pump assembly (1), a parking handle (2), a pull wire support (3), an elastic damper (4), a pull wire (6), a motor support (7), a motor assembly (8) and a circuit (9), wherein: The pull wire support (3) is fixedly arranged at the rear end of the fuel pump assembly (1); the parking handle (2) is fixedly arranged on one side of the rear end of the fuel pump assembly (1) through a bolt, and the parking handle (2) is driven to make a circular motion with the bolt as the center by the fuel pump assembly (1); one end of the elastic damper (4) is movably connected with the parking handle (2), and the other end is fixedly connected with the pull wire (6); one end of the pull wire (6) away from the elastic damper (4) is drivingly connected with the motor assembly (8), and the motor assembly (8) drives the pull wire (6) to move back and forth along the front-rear direction; the motor assembly (8) is fixedly arranged on the motor support (7); and the motor assembly (8) is electrically signal-coupled with a vehicle control circuit through the circuit (9).

2. The mechanical diesel engine flameout motor fuel control apparatus of claim 1, wherein: The motor assembly (8) comprises a motor (810), a turbine worm mechanism (820), a circuit reversing disc (830) and a rotating column sliding groove mechanism (840); the motor (810) is drivingly connected with the turbine worm mechanism (820) through a rotating shaft (811); the edge of a turbine (821) of the turbine worm mechanism (820) is provided with a rotating column (822); the center of the turbine (821) is provided with the circuit reversing disc (830) for controlling the opening and closing of a circuit according to the rotating angle of the turbine (821); the rotating column (822) is embedded in a sliding groove (841) of the rotating column sliding groove mechanism (840) and movably connected with the sliding groove (841); the sliding groove (841) is drivingly connected with a guide rail (842) of the rotating column sliding groove mechanism (840); and one end of the pull wire (6) is fixedly connected with the guide rail (842).

3. The mechanical diesel engine flameout motor fuel control apparatus of claim 2, wherein: The circuit reversing disc (830) is a copper conductive disc structure; a B terminal (831) for providing a positive power supply is arranged at the 0 point of the surface of the circuit reversing disc (830); a grounding terminal (832) is arranged at the center of the circuit reversing disc (830); a P1 terminal (833) for controlling the connection of a circuit is arranged at the 3 point of the surface of the circuit reversing disc (830); a P2 terminal (834) for controlling the connection of a circuit is arranged at the 9 point of the surface of the circuit reversing disc (830); a rotatable gourd-shaped rotating structure (835) is arranged at the center of the circuit reversing disc (830); and the tail of the gourd-shaped rotating structure (835) is used for connecting the P1 terminal (833) or the P2 terminal (834) according to the rotating angle of the turbine (821).

4. The mechanical diesel engine flameout motor fuel control apparatus of claim 3, wherein: The fuel pump assembly (1), the parking handle (2) and the pull wire support (3) adopt an integrated pre-assembly design, so as to ensure the stable action of the pull wire.

5. The mechanical diesel engine flameout motor fuel control apparatus of claim 4, wherein: The side surface of the parking handle (2) is in an S-shaped structure.

6. The mechanical diesel engine flameout motor fuel control apparatus of claim 5 wherein: The connecting end of the parking handle (2) is provided with a U-shaped structure; the connecting end of the elastic damper (4) is provided with a cylindrical end head matched with the U-shaped structure, the cylindrical end head is clamped into the U-shaped structure, so that the elastic damper (4) can rotate flexibly and cannot be pulled out.

7. The mechanical diesel engine flameout motor fuel control apparatus of claim 6 wherein: The pull wire support (3) is fixed to the rear end of the fuel pump assembly (1) by three bolts.

8. The mechanical diesel engine flameout motor fuel control apparatus of claim 7 wherein: The bottom of the pull wire support (3) is provided with a U-shaped groove; one end of the elastic damper (4) away from the parking handle (2) is clamped into the U-shaped groove of the pull wire support (3), and is clamped and fixed by nuts and gaskets (5) on both sides of the U-shaped groove.

9. The mechanical diesel engine flameout motor fuel control apparatus of claim 8, wherein: The length of the pull wire (6) is adjusted according to the overall arrangement.

10. A control method for the flameout motor fuel control device for a mechanical diesel engine according to any one of claims 1 to 9, characterized by: The key-on working state, the key-off fire state and the shutdown state are included, wherein: The key-on working state includes the following steps: Sa1. Turn the key to the ON position, control the motor (810) to be powered on; Sa2. The turbine worm mechanism (820) in the motor (810) rotates, and the pull wire (6) is controlled to be loosened and pushed out through the rotating column sliding groove mechanism (840); Sa3. The parking handle (2) is screwed to the oil supply position under the action of the elastic damper (4) and the motor (810), and the motor (810) is powered off through the circuit reversing disc (830); The key-off fire state includes the following steps: Sb1. Turn the key to the OFF position, control the motor (810) to be powered on; Sb2. The turbine worm mechanism (820) in the motor (810) rotates, and the pull wire (6) is controlled to be pulled to the right through the rotating column sliding groove mechanism (840); Sb3. After the pull wire (6) reaches the right stop position, the motor (810) is powered off through the circuit reversing disc (830); the parking handle (2) stops supplying oil to the fuel pump assembly (1), and the shutdown is realized; The shutdown state includes the following steps: Sc1. Turn the key to the OFF position, the motor (810) is in a powered-off state; Sc2. The pull wire (6) is locked at the right stop position through the turbine worm mechanism (820), and the motor (810) is powered off while the pull wire (6) is locked.

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