Four-stroke electronic injection outboard engine with internal circulation cooling system

Abstract

The four-stroke electronic injection outboard engine with the internal circulation cooling system comprises an outboard engine body, a cooling water tank and a thermostat, one side of the top of the outboard engine body is connected with an oil filling port, and the side, away from the oil filling port, of the outboard engine body is connected with a ship body connecting block. A transmission machine body is connected to the lower portion of the outboard engine body, underwater driving equipment is connected to the bottom of the transmission machine body, a propeller is arranged in the underwater driving equipment, the cooling water tank is connected to the top of the outboard engine body, and a cooling fan is connected to the side, close to the ship body connecting block, of the cooling water tank. A fan connecting frame is connected between the heat dissipation fan and the outboard engine body, the thermostat is arranged above the fan connecting frame, internal circulation heat dissipation can be achieved, heat generated in the operation process of the outboard engine can be rapidly dissipated out, and therefore the operation safety of the outboard engine is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of outboard motors, in particular to a four-stroke electric injection outboard motor with an internal circulation cooling system. Background Art

[0002] An outboard motor is a propulsion engine installed on the outside of the hull (side), usually hung on the outside of the transom. It is also called an outboard motor or a boat motor.

[0003] The patent with application number CN201710390411.X retrieved proposes an outboard motor, which has the advantages of reducing the impact of hull vibration on the outboard motor, improving the driving safety of the hull, convenient transportation and stable structure.

[0004] Similar to the above-mentioned outboard motor, although it has the advantages of reducing the impact of hull vibration on the outboard motor, improving the driving safety of the hull, convenient transportation, and stable structure, it does not have an internal circulation cooling system. A large amount of heat will be generated during the operation of the outboard motor. If the heat cannot be dissipated in time, it will cause damage to the machine and even potential safety hazards.

[0005] Therefore, in view of this, the existing structure and defects are studied and improved, and a four-stroke electronic fuel injection outboard motor with an internal circulation cooling system is proposed, in order to achieve a more practical purpose. Utility Model Content

[0006] The purpose of the utility model is to provide a four-stroke electronic fuel injection outboard motor with an internal circulation cooling system to solve the problem that an existing outboard motor in the above background does not have an internal circulation cooling system and generates a large amount of heat during the operation of the outboard motor. If the heat cannot be dissipated in time, it will cause damage to the machine and even potential safety hazards.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a four-stroke electronic fuel injection outboard motor with an internal circulation cooling system, comprising an outboard motor engine body, a cooling water tank and a thermostat, a top side of the outboard motor engine body is connected with a refueling port, and a side of the outboard motor engine body away from the refueling port is connected with a hull connecting block, a transmission body is connected below the outboard motor engine body, and an underwater driving device is connected to the bottom of the transmission body, a propeller is arranged in the underwater driving device, the cooling water tank is connected to the top of the outboard motor engine body, and a cooling fan is connected to the side of the cooling water tank close to the hull connecting block, a fan connecting frame is connected between the cooling fan and the outboard motor engine body, and the thermostat is arranged above the fan connecting frame.

[0008] Preferably, a liquid filling port is provided on the top of the cooling water tank, and an upper water tank and a lower water tank are provided inside the cooling water tank, the liquid filling port is connected to the upper water tank, a heat dissipation water pipe is provided between the upper water tank and the lower water tank, and both ends of the heat dissipation water pipe are respectively connected to the upper water tank and the lower water tank.

[0009] Preferably, a circulating water pump is connected to one side of the outboard motor engine body, and a cooling liquid supply pipe is connected between the circulating water pump and the lower water tank, a coolant inlet pipe is connected to the bottom of the circulating water pump, and the end of the coolant inlet pipe away from the circulating water pump is connected to the outboard motor engine body.

[0010] Preferably, a coolant return pipe is connected to the top of the thermostat, and one end of the coolant return pipe away from the thermostat is connected to an upper water tank. A valve motor is provided on one side of the thermostat, and a driving gear is connected to the side of the valve motor close to the thermostat.

[0011] Preferably, a coolant outlet pipe is connected to a side of the thermostat away from the valve motor, and an end of the coolant outlet pipe away from the thermostat is connected to the outboard engine body, and a circulating return pipe is connected between the thermostat and the circulating water pump.

[0012] Preferably, a circulating water return port is provided inside the thermostat, two groups of limit blocks are provided below the circulating water return port, and a connecting ring is connected between the two groups of limit blocks. A valve core is provided inside the thermostat, and the valve core includes a first baffle and a second baffle.

[0013] Preferably, the No. 1 baffle is arranged on the top of the valve core, and the No. 2 baffle is arranged on the bottom side of the valve core, a connecting bent rod is connected between the No. 2 baffle and the valve core, and the No. 1 baffle is mutually embedded in the circulating return water port, and the No. 2 baffle is mutually embedded in the circulating return liquid pipe.

[0014] Preferably, a lifting gear plate is connected to a side of the valve core close to the valve motor, and the lifting gear plate is meshed with the driving gear, and a temperature sensing probe is provided on the inner wall of the thermostat.

[0015] Compared with the prior art, the utility model has the following beneficial effects: it can dissipate heat through internal circulation, and can quickly dissipate the heat generated during the operation of the outboard motor, thereby ensuring the safe operation of the outboard motor. The specific contents are as follows:

[0016] The temperature of the liquid in the thermostat is detected by the temperature sensor. When the temperature does not reach the specified temperature, the No. 1 baffle is located at the circulation return port to block the circulation return port. At this time, the No. 2 baffle is away from the circulation return pipe, and the circulation return pipe forms a passage, so that the coolant can flow back to the outboard engine body, so that the coolant can continue to complete the cooling work. When the temperature in the thermostat is too high, the valve motor drives the driving gear to rotate, and the driving gear drives the lifting gear plate to move up and down, thereby driving the valve The core moves up and down, and when the No. 2 baffle on the valve core is moved to the circulating return pipe, the circulating return pipe is blocked to prevent the coolant in the thermostat from flowing back to the outboard engine body, and the valve core moves up and down in the connecting ring, and when the No. 1 baffle blocks the circulating return pipe, the No. 1 baffle drops to the limit block, and a passage is formed from the circulating return port to the coolant return pipe, and the coolant is refluxed into the cooling water tank through the coolant return pipe, and the coolant in the cooling water tank is cooled by the heat dissipation fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the main body of a four-stroke electronic fuel injection outboard motor with an internal circulation cooling system according to the utility model;

[0018] Figure 2 It is a schematic structural diagram of a side section of a cooling water tank of a four-stroke electronic fuel injection outboard motor with an internal circulation cooling system according to the utility model;

[0019] Figure 3 It is a structural schematic diagram of a thermostat of a four-stroke electronic fuel injection outboard engine with an internal circulation cooling system according to the utility model;

[0020] Figure 4 It is a schematic structural diagram of a side section of a thermostat of a four-stroke electronic fuel injection outboard engine with an internal circulation cooling system according to the utility model;

[0021] Figure 5 It is a front structural schematic diagram of a valve core of a four-stroke electronic fuel injection outboard motor with an internal circulation cooling system according to the utility model;

[0022] Figure 6 The utility model is a schematic structural diagram of the side surface of a valve core of a four-stroke electronic fuel injection outboard motor with an internal circulation cooling system.

[0023] In the figure: 1. outboard engine body; 11. refueling port; 12. hull connection block; 2. transmission body; 3. underwater drive equipment; 4. propeller; 5. cooling water tank; 51. filling port; 52. upper water tank; 53. lower water tank; 54. heat dissipation water pipe; 6. circulating water pump; 61. cooling liquid delivery pipe; 62. coolant inlet pipe; 7. thermostat; 71. coolant return pipe; 72. coolant outlet pipe; 74. valve motor; 741. driving gear; 75. temperature sensor; 76. valve core; 761. baffle plate No. 1; 762. baffle plate No. 2; 763. connecting bent rod; 764. lifting gear plate; 77. circulating water return port; 78. limit block; 781. connecting collar; 8. heat dissipation fan; 81. fan connecting frame. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figures 1 to 6 The utility model provides a technical solution: a four-stroke electronic fuel injection outboard motor with an internal circulation cooling system, comprising an outboard engine body 1, a cooling water tank 5 and a thermostat 7, a top side of the outboard engine body 1 is connected with a refueling port 11, and a side of the outboard engine body 1 away from the refueling port 11 is connected with a hull connecting block 12, a transmission body 2 is connected below the outboard engine body 1, and an underwater driving device 3 is connected to the bottom of the transmission body 2, a propeller 4 is arranged in the underwater driving device 3, the cooling water tank 5 is connected to the top of the outboard engine body 1, and a side of the cooling water tank 5 close to the hull connecting block 12 is connected with a heat dissipation fan 8, a fan connecting frame 81 is connected between the heat dissipation fan 8 and the outboard engine body 1, and the thermostat 7 is arranged above the fan connecting frame 81.

[0026] The outboard engine body 1 is connected to the hull through the hull connecting block 12, and the outboard engine body 1 adds fuel through the refueling port 11, and the outboard engine body 1 drives the propeller 4 on the underwater driving device 3 to rotate, thereby pushing the hull to move, and the outboard engine body 1 is cooled by the coolant in the cooling water tank 5, and after the outboard engine body 1 completes the heat dissipation work, the coolant is driven by the thermostat 7 to flow back into the cooling water tank 5, thereby completing the internal circulation cooling, the heat dissipation fan 8 is connected to one side of the cooling water tank 5 through the fan connecting frame 81, and the heat dissipation fan 8 cools the coolant in the cooling water tank 5.

[0027] A liquid filling port 51 is provided at the top of the cooling water tank 5, and an upper water tank 52 and a lower water tank 53 are provided in the cooling water tank 5, the liquid filling port 51 is communicated with the upper water tank 52, a heat dissipation water pipe 54 is provided between the upper water tank 52 and the lower water tank 53, and both ends of the heat dissipation water pipe 54 are respectively connected to the upper water tank 52 and the lower water tank 53, a circulating water pump 6 is connected to one side of the outboard engine body 1, and a cooling liquid delivery pipe 61 is connected between the circulating water pump 6 and the lower water tank 53, a coolant inlet pipe 62 is connected to the bottom of the circulating water pump 6, and the coolant inlet pipe 62 is away from the One end of the circulating water pump 6 is connected to the outboard engine body 1, and the cooling water tank 5 is used to add coolant to the cooling water tank 5 through the liquid filling port 51. The coolant first enters the upper water tank 52, and then enters the heat dissipation water pipe 54 from the upper water tank 52, flows in the heat dissipation water pipe 54, and flows into the lower water tank 53 after the heat dissipation is completed by the heat dissipation fan 8, and then enters the circulating water pump 6 from the lower water tank 53 through the cooling liquid delivery pipe 61, and the circulating water pump 6 pressurizes the coolant and transmits it to the outboard engine body 1 through the coolant inlet pipe 62.

[0028] A coolant return pipe 71 is connected to the top of the thermostat 7, and the end of the coolant return pipe 71 away from the thermostat 7 is connected to the upper water tank 52. A valve motor 74 is provided on one side of the thermostat 7. A driving gear 741 is connected to the side of the valve motor 74 close to the thermostat 7. A coolant outlet pipe 72 is connected to the side of the thermostat 7 away from the valve motor 74, and the end of the coolant outlet pipe 72 away from the thermostat 7 is connected to the outboard engine body 1. A circulating return pipe 73 is connected between the thermostat 7 and the circulating water pump 6. After the outboard engine body 1 completes the heat absorption and cooling work, the coolant enters the thermostat 7 through the coolant outlet pipe 72, and the thermostat 7 can return the coolant to the cooling water tank 5 through the coolant return pipe 71, and the thermostat 7 can return the coolant to the outboard engine body 1 through the circulating return pipe 73.

[0029] A circulating water return port 77 is provided inside the thermostat 7, two groups of limit blocks 78 are provided below the circulating water return port 77, and a connecting ring 781 is connected between the two groups of limit blocks 78. A valve core 76 is provided inside the thermostat 7, and the valve core 76 includes a first baffle 761 and a second baffle 762. The first baffle 761 is provided on the top of the valve core 76, and the second baffle 762 is provided on one side of the bottom of the valve core 76. A connecting bent rod 763 is connected between the second baffle 762 and the valve core 76, and a first baffle 761 is provided on the top of the valve core 76, and the second baffle 762 is provided on one side of the bottom of the valve core 76. The first baffle plate 761 is interlocked with the circulating water return port 77, the second baffle plate 762 is interlocked with the circulating liquid return pipe 73, the valve core 76 is connected to the side of the valve motor 74 close to the valve motor 74 with a lifting gear plate 764, and the lifting gear plate 764 is meshed with the driving gear 741, the inner wall of the thermostat 7 is provided with a temperature probe 75, the temperature probe 75 is a temperature sensor probe of model BST265, the thermostat 7 detects the temperature of the liquid in the thermostat 7 by the temperature probe 75, when the temperature in the thermostat 7 is too high, the temperature of the liquid in the thermostat 7 is too high, and the temperature of the liquid in the thermostat 7 is too high. When the temperature is high, the valve motor 74 drives the driving gear 741 to rotate, and the driving gear 741 drives the lifting gear plate 764 to move up and down, thereby driving the valve core 76 to move up and down, and when the second baffle plate 762 on the valve core 76 is moved to the circulating return pipe 73, the circulating return pipe 73 is blocked to prevent the coolant in the thermostat 7 from flowing back to the outboard engine body 1, and the valve core 76 moves up and down in the connecting ring 781, and when the first baffle plate 761 moves the circulating return pipe 73, the circulating return pipe 73 is blocked to prevent the coolant in the thermostat 7 from flowing back to the outboard engine body 1. When the tube 73 is blocked, the No. 1 baffle 761 drops to the limit stopper 78, and forms a passage from the circulating water return port 77 to the coolant return pipe 71. When the temperature does not reach the specified temperature, the No. 1 baffle 761 is located at the circulating water return port 77, blocking the circulating water return port 77. At this time, the No. 2 baffle 762 is away from the circulating water return pipe 73, and forms a passage for the circulating water return pipe 73, so that the coolant can flow back into the outboard engine body 1, allowing the coolant to continue to complete the cooling work.

[0030] Working principle: When using a four-stroke electronic fuel injection outboard motor with an internal circulation cooling system, first, the outboard engine body 1 is connected to the hull through the hull connecting block 12, and the heat dissipation fan 8 is connected to one side of the cooling water tank 5 through the fan connecting frame 81, and fuel is added to the outboard engine body 1 through the refueling port 11, and the cooling water tank 5 adds coolant to the cooling water tank 5 through the liquid filling port 51, and the outboard engine body 1 drives the propeller 4 on the underwater driving device 3 to rotate, thereby pushing the hull to move, and the outboard engine body 1 generates a large amount of heat during operation, and the heat in the outboard engine body 1 is cooled by the coolant in the cooling water tank 5, and after the outboard engine body 1 completes the heat dissipation work, the coolant is driven by the thermostat 7 to flow back into the cooling water tank 5, thereby completing the internal circulation cooling, and the heat dissipation fan 8 cools the coolant in the cooling water tank 5.

[0031] The coolant first enters the upper water tank 52, and then enters the heat dissipation water pipe 54 from the upper water tank 52, flows in the heat dissipation water pipe 54, and flows into the lower water tank 53 after the heat dissipation is completed by the heat dissipation fan 8, and then enters the circulating water pump 6 from the lower water tank 53 through the cooling liquid delivery pipe 61, and the circulating water pump 6 pressurizes the coolant and transmits it to the outboard engine body 1 through the coolant inlet pipe 62. After the outboard engine body 1 completes the heat absorption and cooling work, the coolant enters the thermostat 7 through the coolant outlet pipe 72.

[0032] The temperature of the liquid in the thermostat 7 is detected by the temperature sensing probe 75. When the temperature does not reach the specified temperature, the first baffle 761 is located at the circulation return port 77 to block the circulation return port 77. At this time, the second baffle 762 is away from the circulation return pipe 73, and the circulation return pipe 73 forms a passage, so that the coolant can flow back into the outboard engine body 1, so that the coolant continues to complete the cooling work. When the temperature in the thermostat 7 is too high, the valve motor 74 drives the driving gear 741 to rotate, and the driving gear 741 drives the lifting gear plate 764 to move up and down. The valve core 76 moves up and down, thereby driving the valve core 76 to move up and down, and when the second baffle plate 762 on the valve core 76 is moved to the circulating return pipe 73, the circulating return pipe 73 is blocked to prevent the coolant in the thermostat 7 from flowing back to the outboard engine body 1, and the valve core 76 moves up and down in the connecting ring 781, and when the first baffle plate 761 blocks the circulating return pipe 73, the first baffle plate 761 drops to the limit block 78, and a passage is formed from the circulating return port 77 to the coolant return pipe 71, and the coolant is refluxed into the cooling water tank 5 through the coolant return pipe 71.

Claims

1. A four-stroke electronic fuel injection outboard motor with an internal circulation cooling system, comprising an outboard motor engine body (1), a cooling water tank (5) and a thermostat (7), characterized in that: A refueling port (11) is connected to one side of the top of the outboard engine body (1), and a hull connection block (12) is connected to the side of the outboard engine body (1) away from the refueling port (11). A transmission body (2) is connected to the bottom of the outboard engine body (1), and an underwater drive device (3) is connected to the bottom of the transmission body (2). A propeller (4) is arranged in the underwater drive device (3). The cooling water tank (5) is connected to the top of the outboard engine body (1), and a heat dissipation fan (8) is connected to the side of the cooling water tank (5) close to the hull connection block (12). A fan connection frame (81) is connected between the heat dissipation fan (8) and the outboard engine body (1), and the thermostat (7) is arranged above the fan connection frame (81).

2. A four-stroke electronic fuel injection outboard motor with an internal circulation cooling system according to claim 1, characterized in that: The top of the cooling water tank (5) is provided with a liquid filling port (51), and an upper water tank (52) and a lower water tank (53) are provided inside the cooling water tank (5); the liquid filling port (51) is in communication with the upper water tank (52), a heat dissipation water pipe (54) is provided between the upper water tank (52) and the lower water tank (53), and two ends of the heat dissipation water pipe (54) are respectively connected to the upper water tank (52) and the lower water tank (53).

3. A four-stroke electronic fuel injection outboard motor with an internal circulation cooling system according to claim 2, characterized in that: A circulating water pump (6) is connected to one side of the outboard engine body (1), and a cooling liquid delivery pipe (61) is connected between the circulating water pump (6) and the lower water tank (53). A coolant inlet pipe (62) is connected to the bottom of the circulating water pump (6), and an end of the coolant inlet pipe (62) away from the circulating water pump (6) is connected to the outboard engine body (1).

4. The four-stroke electronic fuel injection outboard motor with an internal circulation cooling system according to claim 1, characterized in that: The top of the thermostat (7) is connected to a coolant return pipe (71), and one end of the coolant return pipe (71) away from the thermostat (7) is connected to the interior of an upper water tank (52). A valve motor (74) is provided on one side of the thermostat (7), and a driving gear (741) is connected to the side of the valve motor (74) close to the thermostat (7).

5. The four-stroke electronic fuel injection outboard motor with an internal circulation cooling system according to claim 4, characterized in that: A coolant outlet pipe (72) is connected to a side of the thermostat (7) away from the valve motor (74), and an end of the coolant outlet pipe (72) away from the thermostat (7) is connected to the outboard engine body (1), and a circulating return pipe (73) is connected between the thermostat (7) and the circulating water pump (6).

6. A four-stroke electronic fuel injection outboard motor with an internal circulation cooling system according to claim 5, characterized in that: A circulating water return port (77) is provided inside the thermostat (7), two groups of limit blocks (78) are provided below the circulating water return port (77), and a connecting ring (781) is connected between the two groups of limit blocks (78). A valve core (76) is provided inside the thermostat (7), and the valve core (76) comprises a first baffle (761) and a second baffle (762).

7. A four-stroke electronic fuel injection outboard motor with an internal circulation cooling system according to claim 6, characterized in that: The first baffle plate (761) is arranged on the top of the valve core (76), and the second baffle plate (762) is arranged on one side of the bottom of the valve core (76). A connecting bent rod (763) is connected between the second baffle plate (762) and the valve core (76). The first baffle plate (761) and the circulating water return port (77) are interlocked, and the second baffle plate (762) and the circulating liquid return pipe (73) are interlocked.

8. The four-stroke electronic fuel injection outboard motor with an internal circulation cooling system according to claim 7, characterized in that: A lifting gear plate (764) is connected to a side of the valve core (76) close to the valve motor (74), and the lifting gear plate (764) and the driving gear (741) are meshed with each other. A temperature sensing probe (75) is provided on the inner wall of the thermostat (7).

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