Outboard engine air pump with lubrication system

Abstract

The application discloses an outboard engine air pump with a lubricating system, which comprises an air pump body, an air pump upper cover, an air pump cylinder head, an air pump oil cup and a fuel dripping pump; the air pump upper cover is provided with an air pump crankshaft, and the upper end of the air pump crankshaft is provided with an air pump belt pulley; the air pump body is provided with a piston cavity, and the piston cavity is provided with a piston; the piston is provided with a connecting rod, and the connecting rod is matched with the piston and the air pump crankshaft; the lower side of the air pump body is provided with an oil leakage groove, and the air pump oil cup is arranged at the oil leakage groove on the air pump body; the upper end of the air pump upper cover is provided with a fuel dripping nozzle, and the bottom of the air pump oil cup is provided with a fuel draining screw; the power of the engine crankshaft is transmitted to the air pump crankshaft through the air pump belt pulley, and then the piston is driven to move, so that the required gas of the air injection engine is met; external power is not needed, and the cost is reduced; and the water cooling system and the lubricating system of the air pump are optimally designed, the stability of the air pump operation is ensured, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The application relates to an outboard engine air pump with a lubricating system, and belongs to the technical field of outboard engines. BACKGROUND

[0002] With the development of outboard engines, the engines of the outboard engines also apply air injection structures, and the applicant can refer to the outboard engine with air injection applied for by the applicant recently; in order to supply air to the air injection structure, an air pump needs to be arranged, and the existing air pump adopts external independent power, and lacks effective cooling and lubricating structures, and it is difficult to effectively meet the air injection air supply requirements of the outboard engine. SUMMARY

[0003] In view of the above technical problems, the application aims to provide an outboard engine air pump with a lubricating system.

[0004] The technical solution of the application is realized as follows: an outboard engine air pump with a lubricating system comprises an air pump body, an air pump upper cover, an air pump cylinder head, an air pump oil cup and a fuel dripping pump; the air pump upper cover is arranged on the upper side of the air pump body, the air pump upper cover is provided with an air pump crankshaft, the upper end of the air pump crankshaft is provided with an air pump belt pulley, and the lower end of the air pump crankshaft enters the air pump body; the air pump body is provided with a piston cavity, the air pump cylinder head is arranged at the outer end of the piston cavity, and the air pump cylinder head is provided with an air inlet nozzle and an air outlet nozzle; the piston cavity is provided with a piston, the piston is provided with a connecting rod, one end of the connecting rod is matched with the piston, and the other end of the connecting rod is matched with the air pump crankshaft through a crank pin; the lower side of the air pump body is provided with an oil leakage groove, and the air pump oil cup is arranged at the oil leakage groove on the air pump body; the upper end of the air pump upper cover is provided with a fuel dripping nozzle, the bottom of the air pump oil cup is provided with a drain screw, and the two ends of the fuel dripping pump are connected with the fuel dripping nozzle and the drain screw respectively.

[0005] Preferably, the air pump oil cup is provided with an oil cup water jacket, the oil cup water jacket is provided with a water inlet, the outer side of the piston cavity of the air pump body and the air pump cylinder head are both provided with water cooling structures in communication, the water cooling structure on the air pump body is in communication with the oil cup water jacket through a water nozzle, and the water cooling structure on the air pump cylinder head has a water outlet.

[0006] Preferably, the water cooling structures on the air pump body and the air pump cylinder head are water cooling cavities directly machined on the air pump body and the air pump cylinder head respectively.

[0007] Preferably, the oil leakage groove is located at the bottom of the air pump body and away from one side of the piston cavity, the oil leakage groove is a rectangular groove structure, and the bottom of the oil leakage groove is provided with an oil leakage hole.

[0008] Preferably, the upper end of the air pump crankshaft extends to the outside of the air pump upper cover, and the air pump pulley is arranged on the part of the air pump crankshaft located outside the air pump upper cover; the upper end of the air pump crankshaft is provided with a pulley pad for abutting against the air pump pulley, and an oil seal is arranged between the pulley pad and the air pump upper cover.

[0009] Compared with the prior art, the air pump of the outboard motor with a lubricating system has the following advantages due to the use of the above technical solutions:

[0010] The air pump of the outboard motor with a lubricating system of the present application transmits the power of the engine crankshaft to the air pump crankshaft through the air pump pulley, and then drives the piston to move, thereby meeting the required gas of the air injection engine; no external power is needed, thereby reducing the cost; and the water cooling system and the lubricating system of the air pump are optimally designed, thereby ensuring the stability of the air pump operation and improving the service life. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art according to the contents of the embodiments of the present application and the drawings without any creative labor.

[0012] FIG. 1 is a perspective view of the air pump of the outboard motor with a lubricating system according to the present application; Figure 1 FIG. 2 is a perspective view of the air pump of the outboard motor with a lubricating system according to the present application;

[0013] FIG. 3 is a schematic diagram of the cooling water path of the air pump of the outboard motor with a lubricating system according to the present application; Figure 2 FIG. 4 is a schematic diagram of the oil path circulation of the air pump of the outboard motor with a lubricating system according to the present application;

[0014] FIG. 5 is a partial structure sectional view of the air pump of the outboard motor with a lubricating system according to the present application; Figure 3 FIG. 6 is a schematic diagram of one working posture of the air pump of the outboard motor with a lubricating system according to the present application.

[0015] Figure 4 FIG. 7 is a schematic diagram of another working posture of the air pump of the outboard motor with a lubricating system according to the present application.

[0016] FIG. 8 is a schematic diagram of a third working posture of the air pump of the outboard motor with a lubricating system according to the present application. Figure 5 DETAILED DESCRIPTION

[0017] ​​In order to make the technical problems solved by the present application, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present application will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0018] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "straight", "horizontal", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0019] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or it can be detachable connection; it can be mechanical connection, or it can be electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0020] As shown in the accompanying Figures 1-5 The outboard engine air pump with a lubricating system disclosed by the present application comprises an air pump body 1, an air pump upper cover 2, an air pump cylinder head 3, an air pump oil cup 4 and a fuel drip pump 5.

[0021] The air pump upper cover 2 is arranged on the upper side of the air pump body 1, and the air pump crankshaft 6 is arranged in the air pump upper cover 2, the upper end of the air pump crankshaft 6 extends to the outside of the air pump upper cover 2, and the upper end of the air pump crankshaft 6 is provided with an air pump belt pulley 7; the air pump belt pulley 7 is arranged on the part of the air pump crankshaft 6 located outside the air pump upper cover 2, the upper end of the air pump crankshaft 6 is provided with a belt pulley pad 31, the belt pulley pad 31 is used to abut against the air pump belt pulley 7 from the lower side, cooperate with the fixing nut on the upper side of the air pump belt pulley 7 to fix the air pump belt pulley 7, and an oil seal 32 is arranged between the belt pulley pad 31 and the air pump upper cover 2 to ensure the sealing performance of the upper end of the air pump upper cover 2; the air pump belt pulley 7 can be matched with the air pump crankshaft 6 through a key groove structure, the air pump belt pulley 7 is used to connect the crankshaft of the outboard engine engine through a belt, and transmit power to the air pump crankshaft 6, and the lower end of the air pump crankshaft 6 enters the air pump body 1.

[0022] The gas pump body 1 is provided with a piston cavity, the gas pump cylinder head 3 is arranged at the outer end of the piston cavity, and the gas pump cylinder head 3 is provided with an air inlet nozzle 8 and an air outlet nozzle 9; the piston cavity is provided with a piston 10, the piston 10 is provided with a connecting rod 11, one end of the connecting rod 11 is hinged to the piston 10, the other end is hinged to the gas pump crankshaft 6 through a crank pin 12, and a structure similar to an engine power cylinder is formed.

[0023] In operation, the rotation of the engine crankshaft drives the gas pump pulley and the gas pump crankshaft to rotate through the belt, air is sucked into the piston cavity from the air inlet nozzle when the piston descends, and air in the piston cavity is discharged through the gas pump cylinder head and the air outlet nozzle when the piston ascends, thereby providing the gas rail of the gas injection engine with the required gas.

[0024] With reference to Figure 4 The lower side of the gas pump body 1 is provided with an oil leakage groove 13, and the gas pump oil cup 4 is arranged at the oil leakage groove 13 on the gas pump body 1; the upper end of the gas pump upper cover 2 is provided with a fuel dripping nozzle 14, the bottom of the gas pump oil cup 4 is provided with a fuel draining screw 15, and the two ends of the fuel dripping pump 5 are connected with the fuel dripping nozzle 14 and the fuel draining screw 15 respectively, thereby providing a lubricating oil path for the mechanical structure inside the gas pump.

[0025] The fuel dripping pump 5 pumps oil from the gas pump oil cup 4, enters the upper end of the gas pump upper cover 2 through the fuel dripping nozzle, and lubricates the bearings and the gas pump crankshaft and other structures from top to bottom; since the rotation of the engine crankshaft drives the gas pump pulley and the gas pump crankshaft to rotate through the belt, the lubricating oil is splashed into the cylinder wall of the gas pump body 1 through the rotation of the crank pin of the crankshaft to lubricate the piston, and finally the lubricating oil returns to the gas pump oil cup 4 through the oil leakage groove 13.

[0026] With reference to Figure 2 The gas pump oil cup 4 is provided with an oil cup water jacket 21, the oil cup water jacket 21 is provided with a water inlet 22, the outer side of the piston cavity of the gas pump body 1 and the gas pump cylinder head 3 are both provided with water cooling structures connected therewith, and the water cooling structures on the gas pump body 1 and the gas pump cylinder head 3 can be water cooling cavities directly machined on the gas pump body 1 and the gas pump cylinder head 3 respectively; the water cooling structure on the gas pump body 1 is connected with the oil cup water jacket 21 through a water nozzle 23, and the water cooling structure on the gas pump cylinder head 3 has a water outlet 24; the water inlet 22 and the water outlet 24 can be connected with an external water pump respectively to form a complete cooling water path.

[0027] The cooling water path can continuously cool the gas pump oil cup 4, the piston cavity of the gas pump body 1 and the gas pump cylinder head 3, the cooling water enters the oil cup water jacket from the water inlet, cools the continuously circulating lubricating oil, enters the gas pump body from the upper end of the oil cup water jacket through the water nozzle 23, cools the reciprocating piston, and the cooling water is discharged through the water outlet 24 of the gas pump cylinder head.

[0028] With reference toFigures 3-5 As a preferred mode, the oil leakage groove 13 is located at the bottom of the air pump body 1 and away from one side of the piston cavity, and the oil leakage groove 13 is a rectangular groove structure, and the bottom of the oil leakage groove 13 is provided with an oil leakage hole.

[0029] Through the mechanism, the air pump is in a tilted transportation process posture, the oil surface in the air pump oil cup 4 is lower than the oil leakage groove 13, the lubricating oil can be prevented from entering the piston cavity and seeping into the air inlet cavity of the air pump cylinder head 3, dripping from the air inlet nozzle 8 into the engine, and avoiding safety hazards. Figure 5

[0030] The above examples are only for illustrating the technical concept and characteristics of the present application, the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application, any equivalent changes or modifications made according to the spirit and essence of the present application should be covered within the protection scope of the present application.​

Claims

1. An outboard motor air pump with a self-lubricating system, characterized by: The air pump comprises a pump body (1), a pump cover (2), a pump cylinder head (3), a pump oil cup (4) and a fuel dripping pump (5). The pump cover (2) is arranged on the upper side of the pump body (1), and the pump cover (2) is provided with a pump crankshaft (6), the upper end of the pump crankshaft (6) is provided with a pump belt wheel (7), and the lower end of the pump crankshaft (6) enters the pump body (1). The pump body (1) is provided with a piston cavity, the pump cylinder head (3) is arranged at the outer end of the piston cavity, and the pump cylinder head (3) is provided with an air inlet nozzle (8) and an air outlet nozzle (9); the piston cavity is provided with a piston (10), the piston (10) is provided with a connecting rod (11), one end of the connecting rod (11) is matched with the piston (10), and the other end is matched with the pump crankshaft (6) through a crank pin (12). The lower side of the pump body (1) is provided with an oil leakage groove (13), the pump oil cup (4) is arranged at the oil leakage groove (13) on the pump body (1); the upper end of the pump cover (2) is provided with a dripping nozzle (14), the bottom of the pump oil cup (4) is provided with a drain screw (15), and the two ends of the fuel dripping pump (5) are connected with the dripping nozzle (14) and the drain screw (15) respectively. The fuel dripping pump (5) pumps oil from the pump oil cup (4), enters the upper end of the pump cover (2) through the dripping nozzle (14), lubricates the pump crankshaft (6) from top to bottom, rotates through the pump belt wheel and the pump crankshaft, and splashes the lubricating oil to the cylinder wall of the pump body (1), and the lubricating oil returns to the pump oil cup (4) through the oil leakage groove (13).

2. The outboard motor air pump with self-lubricating system according to claim 1, characterized in that: The pump oil cup (4) is provided with an oil cup water jacket (21), the oil cup water jacket (21) is provided with a water inlet (22), the outer side of the piston cavity of the pump body (1) and the pump cylinder head (3) are provided with water cooling structures in communication, the water cooling structure on the pump body (1) is communicated with the oil cup water jacket (21) through a water nozzle (23), and the water cooling structure on the pump cylinder head (3) has a water outlet (24).

3. The outboard motor air pump with self-lubricating system according to claim 2, characterized in that: The water cooling structures on the pump body (1) and the pump cylinder head (3) are water cooling cavities directly machined on the pump body (1) and the pump cylinder head (3) respectively.

4. The outboard motor air pump with self-lubricating system according to claim 1, characterized in that: The oil leakage groove (13) is located at the bottom of the pump body (1) and away from the side of the piston cavity, the oil leakage groove (13) is a rectangular groove structure, and the bottom of the oil leakage groove (13) is provided with an oil leakage hole.

5. The outboard marine air pump of claim 1, wherein: The upper end of the pump crankshaft (6) extends to the outside of the pump cover (2), the pump belt wheel (7) is arranged on the part of the pump crankshaft (6) located outside the pump cover (2); the upper end of the pump crankshaft (6) is provided with a belt wheel pad (31), the belt wheel pad (31) is used for abutting against the pump belt wheel (7), and an oil seal (32) is arranged between the belt wheel pad (31) and the pump cover (2).

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