UAV engine with oil and gasoline separation and use method thereof

Abstract

An engine for a drone with separated oil and gasoline, and a method for using the engine, relate to the technical field of drone engines, and more particularly to an engine for a drone with separated oil and gasoline, and a method for using the engine. The engine comprises a crankcase, an air intake and a fuel injector provided on the crankcase, the crankcase communicating with a cylinder block, a crankshaft disposed within the crankcase, the crankshaft driving a connecting rod to rotate, the crankshaft passing through the crankcase, an extension of the crankshaft extending to the outside of the crankcase sidewall; a roller bracket disposed on the extension; an oil hose disposed on the outer periphery of the roller bracket, a roller disposed on the roller bracket, and the roller in contact with the oil hose; one end of the oil hose is connected to an oil tank, and the other end of the oil hose passes through the crankcase and is disposed corresponding to the crankshaft and connecting rod; the oil tank is disposed within the drone cabin. The present invention effectively avoids the adverse effects of uneven oil mixing, thereby improving the performance and service life of the drone engine.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicle (UAV) engines, and in particular to an UAV engine with separated oil and gasoline, and a method for using the engine. Background Art

[0002] Currently, the oil and gasoline mixture used in drone engines enters the crankcase through a fuel injector. The oil lubricates the crankshaft and connecting rod, while the gasoline burns to provide power. Due to the different ignition points of oil and gasoline, when the oil-gasoline mixture enters the crankcase through the fuel injector, the gasoline interferes with the oil's lubrication of the crankshaft and connecting rod, thus affecting the performance and service life of the drone engine. Summary of the Invention

[0003] The purpose of the present invention is to provide an engine for a drone with separated engine oil and gasoline and a method of using the same, so that the engine oil and gasoline are separated and enter the crankcase, and the engine oil can lubricate the connecting rod and crankshaft more effectively and quickly, effectively avoiding the adverse effects caused by uneven engine oil mixing ratio, and improving the performance and service life of the drone engine.

[0004] The engine for a drone with separated oil and gasoline provided by the present invention includes a crankcase, an air intake duct and an oil injector are provided on the crankcase, the crankcase is connected to the cylinder body, a crankshaft is provided in the crankcase, the crankshaft drives the connecting rod to rotate, the crankshaft passes through the crankcase, and the extended shaft of the crankshaft extends to the outside of the side wall of the crankcase; a roller bracket is provided on the extended shaft; an oil hose is provided on the periphery of the roller bracket, and a roller is provided on the roller bracket, and the roller presses on the oil hose and is in contact with and connected to the oil hose; one end of the oil hose is connected to the oil tank, and the other end of the oil hose passes through the crankcase and is arranged opposite to the crankshaft and the connecting rod; the oil tank is arranged in the cabin of the drone.

[0005] Furthermore, roller bearings are provided at both ends of the roller, and the roller and the roller bearings are fixed to the roller bracket via bearing pins.

[0006] Furthermore, the roller is provided with an inner roller retaining spring and an outer roller retaining spring, and the inner roller retaining spring is located on the roller bearing, and the outer roller retaining spring is fixed to the bearing pin at the upper end of the outer side of the roller bracket.

[0007] Furthermore, a bearing positioning sleeve is provided on the bearing pin, and the bearing positioning sleeve is located on the roller bearing on the inner side of the roller bracket.

[0008] Furthermore, the oil hose is wrapped around the roller bracket; the roller includes 1 main roller and 2 auxiliary rollers, and the 1 main roller and the 2 auxiliary rollers are distributed on the roller bracket in a triangular structure. The main roller is in contact with the upper end of the oil hose, and the auxiliary rollers are in contact with both sides of the oil hose.

[0009] Furthermore, a crankshaft bearing is provided on the extension shaft, an oil seal is provided on the crankshaft bearing, and the oil seal seals the extension shaft to the side wall of the crankcase.

[0010] Furthermore, a crankcase outer case is provided on the crankcase, and the extension shaft and the roller bracket are located in the crankcase outer case; a pressure cover is provided on the crankcase outer case, and the pressure cover is fixed to the crankcase outer case by flat head screws.

[0011] Furthermore, a flat key is provided on the extension shaft, and a limiting groove adapted to the flat key is provided on the inner wall of the roller bracket.

[0012] Furthermore, the roller bracket is fixed to the extension shaft by a bracket outer retaining ring; a bracket bearing is provided on the outer side of the bracket outer retaining ring, and the bracket bearing is installed on the extension shaft.

[0013] A method for using a UAV engine with oil and gasoline separation includes the following steps:

[0014] Step 1: The servo simultaneously activates the valve plate and fuel injector in the air intake duct. The air from the air intake duct and the gasoline from the fuel injector enter the crankcase. The air and gasoline are mixed and atomized, and the gasoline is burned to start the UAV engine.

[0015] Step 2: After the UAV engine is started, the crankshaft rotates, and the crankshaft extension shaft rotates accordingly, driving the roller bracket to rotate, so that the roller lightly presses on the oil hose and rotates;

[0016] Step 3: The roller rotates to drive the oil in the oil hose to flow;

[0017] Step 4: The engine oil enters the crankcase through the oil hose to lubricate the crankshaft and connecting rod.

[0018] Compared with the prior art, the UAV engine with oil and gasoline separation provided by the present invention and its use method have the following beneficial effects:

[0019] 1. The roller is in contact with the oil hose and lightly presses on the oil hose. When the roller rotates, it drives the oil in the oil hose to flow into the crankcase to lubricate the crankshaft and connecting rod.

[0020] 2. The crankcase is equipped with an air intake and a fuel injector. Gasoline enters the crankcase from the fuel injector, and engine oil enters the crankcase through the oil hose. The engine oil and gasoline enter the crankcase separately. The engine oil can lubricate the connecting rod and crankshaft more effectively and quickly, effectively avoiding the adverse effects caused by uneven oil mixing ratio, and can improve the performance and service life of the UAV engine.

[0021] The engine for a drone with separated engine oil and gasoline provided by the present invention has gasoline entering the crankcase from the fuel injector and engine oil entering the crankcase through the oil hose. The engine oil and gasoline enter the crankcase separately, and the engine oil can lubricate the connecting rod and crankshaft more effectively and quickly, effectively avoiding the adverse effects caused by uneven engine oil mixing ratio, and having the positive effect of improving the performance and service life of the drone engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings partially disclose specific embodiments of the present invention, wherein:

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is a structural schematic diagram of the crankshaft, crankshaft outer housing and oil tank of the present invention;

[0025] Figure 3 It is a schematic structural diagram of the crankshaft and roller bracket of the present invention;

[0026] Figure 4 This is an exploded view of the crankshaft outer housing, roller bracket and gland of the present invention;

[0027] Figure 5 It is a schematic structural diagram of the crankshaft of the present invention;

[0028] Figure 6 This is an exploded view of the structure of the roller bracket of the present invention;

[0029] Figure 7 is a structural sectional view of the roller of the present invention;

[0030] Figure numerals: 1. Crankcase; 11. Intake duct; 12. Fuel injector; 13. Crankshaft outer housing; 2. Cylinder block; 3. Crankshaft; 31. Extension shaft; 32. Crankshaft bearing; 33. Oil seal; 34. Flat key; 4. Roller bracket; 41. Limiting groove; 42. Bracket outer retaining spring; 43. Bracket bearing; 5. Oil hose; 51. Oil tank; 6. Roller; 61. Roller bearing; 62. Bearing pin; 63. Roller inner retaining spring; 64. Roller outer retaining spring; 65. Bearing locating sleeve; 66. Main roller; 67. Auxiliary roller; 7. Pressure cover; 71. Flat head screw. DETAILED DESCRIPTION

[0031] like Figure 1-7As shown, the engine for a drone with separated oil and gasoline provided by the present invention includes a crankcase 1, an air intake 11 and an oil injector 12 are provided on the crankcase 1, the crankcase 1 is connected to the cylinder block 2, a crankshaft 3 is provided in the crankcase 1, the crankshaft 3 drives the connecting rod to rotate, the crankshaft 3 passes through the crankcase 1, and the extension shaft 31 of the crankshaft 3 extends to the outside of the side wall of the crankcase 1; a roller bracket 4 is provided on the extension shaft 31; an oil hose 5 is provided on the outer periphery of the roller bracket 4, and a roller 6 is provided on the roller bracket 4, and the roller 6 is pressed on the oil hose and contacted and connected with the oil hose 5; one end of the oil hose 5 is connected to the oil tank 51, and the other end of the oil hose 5 passes through the crankcase 1 and is arranged opposite to the crankshaft 3 and the connecting rod; the oil tank 51 is arranged in the cabin of the drone. Example 1:

[0032] When the present invention is in use, first, the servo simultaneously starts the valve plate and the fuel injector 12 in the intake duct 11, and the air in the intake duct 11 and the gasoline from the fuel injector 12 enter the crankcase 1, the air and gasoline are mixed and atomized, the gasoline is burned, and the UAV engine is started; then, after the UAV engine is started, the crankshaft 3 rotates, and the extension shaft 31 of the crankshaft 3 rotates accordingly, driving the roller bracket 4 to rotate, so that the roller 6 lightly presses on the oil hose 5 and rotates, and the rotation of the roller 6 drives the oil in the oil hose 5 to flow; finally, the oil in the oil tank 51 enters the crankcase 1 through the oil hose 5 to lubricate the crankshaft 3 and the connecting rod.

[0033] In the UAV engine with separated engine oil and gasoline provided by the present invention, gasoline enters the crankcase 1 from the fuel injector 12, and engine oil enters the crankcase 1 through the oil hose 5. The engine oil and gasoline enter the crankcase 1 separately, and the engine oil can lubricate the connecting rod and crankshaft more effectively and quickly, effectively avoiding the adverse effects caused by uneven engine oil mixing ratio, and can improve the performance and service life of the UAV engine.

[0034] like Figure 4 、 6 As shown in Figures 7 and 8, roller bearings 61 are provided at both ends of the roller 6. The roller 6 and the roller bearings 61 are fixed to the roller bracket 4 via bearing pins 62. When the extension shaft 31 of the crankshaft 3 drives the roller bracket 4 to rotate, the roller 6 also rotates under the action of the roller bearings 61. The roller 6 lightly presses on the oil hose 5 and rotates, driving the oil in the oil hose 5 into the crankcase 1, lubricating the crankshaft 3 and the connecting rod, effectively avoiding the adverse effects caused by uneven oil mixing.

[0035] like Figure 4 、 6As shown in Figures 7 and 8, roller 6 is provided with an inner roller retaining spring 63 and an outer roller retaining spring 64. The inner roller retaining spring 63 is located on roller bearing 61, while the outer roller retaining spring 64 is secured to a bearing pin 62 at the outer upper end of roller bracket 4. The inner roller retaining spring 63 is used to secure roller bearing 61, facilitating its rotation. The outer roller retaining spring 64 is used to secure roller 6 to roller bracket 4 via bearing pin 62, facilitating rotation of roller 6. This drives the oil in oil hose 5 to flow into crankcase 1, lubricating crankshaft 3 and connecting rod, effectively avoiding the adverse effects of uneven oil mixing.

[0036] like Figure 4 、 6 As shown in FIG. 7 , a bearing positioning sleeve 65 is further provided on the bearing pin 62, and the bearing positioning sleeve 65 is located on the roller bearing 61 inside the roller bracket 4. The bearing positioning sleeve 65 facilitates the installation of the roller bearing 61 on the roller 6 through the bearing pin 62.

[0037] like Figure 3 As shown, the oil hose 5 is wrapped around the roller bracket 4; the roller 6 includes a main roller 66 and two auxiliary rollers 67, which are arranged in a triangular structure on the roller bracket 4. The main roller 66 is in contact with the upper end of the oil hose 5, and the auxiliary rollers 67 are in contact with both sides of the oil hose 5. The main roller 66 is located at the upper end of the roller bracket 4, and the two auxiliary rollers 67 are located on both sides of the roller bracket 4. The main roller 66, assisted by the two auxiliary rollers 67, drives the oil in the oil hose 5 into the crankcase 1, lubricating the crankshaft 3 and connecting rod. This effectively avoids the adverse effects caused by uneven oil mixing and can improve the performance and service life of the UAV engine.

[0038] like Figure 3 As shown, the extended shaft 31 is provided with a crankshaft bearing 32, which is equipped with an oil seal 33. The oil seal 33 seals the extended shaft 31 against the sidewall of the crankcase 1. As the crankshaft 3 rotates, the extended shaft 31 of the crankshaft 3 rotates accordingly, and the crankshaft bearing 32 facilitates the rotation of the extended shaft 31. The extended shaft 31 of the crankshaft 3 extends to the outside of the sidewall of the crankcase 1, and the oil seal 33 enhances the sealing of the extended shaft 31 against the sidewall of the crankcase 1.

[0039] like Figure 4 As shown, crankcase 1 is provided with crankcase housing 13, with extension shaft 31 and roller bracket 4 located within crankcase housing 13. Crankcase housing 13 is provided with gland 7, which is secured to crankcase housing 13 by flat-head screws 71. Extension shaft 31 and roller bracket 4 are installed within the sealed space between crankcase housing 13 and gland 7, without affecting the flight of the drone and improving the performance of the drone engine.

[0040] like Figure 5-6 As shown, a flat key 34 is provided on the extension shaft 31, and a limiting groove 41 is provided on the inner wall of the roller bracket 4 to match the flat key 34. Under the cooperation of the flat key 34 and the limiting groove 41, the extension shaft 31 of the crankshaft 3 rotates, driving the roller bracket 4 to rotate, causing the roller 6 to lightly press on the oil hose 5 and rotate, driving the oil in the oil hose 5 to flow into the crankcase 1, lubricating the crankshaft 3 and the connecting rod, effectively avoiding the adverse effects caused by uneven oil mixing.

[0041] like Figure 4 、 6 As shown, the roller bracket 4 is secured to the extension shaft 31 by a bracket external retaining spring 42; a bracket bearing 43 is provided on the outer side of the bracket external retaining spring 42, and the bracket bearing 43 is mounted on the extension shaft 31. The bracket external retaining spring 42 secures the roller bracket 4 to the extension shaft 31. The bracket bearing 43 facilitates the rotation of the roller bracket 4 on the extension shaft 31, thereby facilitating the flow of oil from the oil hose 5 into the crankcase 1, lubricating the crankshaft 3 and connecting rod. This effectively avoids the adverse effects of uneven oil mixing and improves the performance and service life of the UAV engine. Example 2:

[0042] A method for using a UAV engine with oil and gasoline separation includes the following steps:

[0043] Step 1: The servo simultaneously activates the valve plate and the fuel injector 12 in the air intake duct 11. The air in the air intake duct 11 and the gasoline from the fuel injector 12 enter the crankcase 1. The air and gasoline are mixed and atomized, and the gasoline is burned to start the UAV engine.

[0044] Step 2: After the UAV engine is started, the crankshaft 3 rotates, and the extension shaft 31 of the crankshaft 3 rotates accordingly, driving the roller bracket 4 to rotate, so that the roller 6 lightly presses on the oil hose 5 and rotates;

[0045] Step 3: The roller 6 rotates to drive the oil in the oil hose 5 to flow;

[0046] Step 4: The engine oil enters the crankcase 1 through the oil hose 5 to lubricate the crankshaft 3 and the connecting rod.

[0047] The oil and gasoline separation UAV engine provided by the present invention and its use method include a cylinder block 3 that can be any of a single-cylinder, horizontal twin-cylinder, inline twin-cylinder, inline four-cylinder, and inline six-cylinder engines. This means that the present invention is applicable to various specifications of UAV engines, including single-cylinder, horizontal twin-cylinder, inline two-cylinder, inline four-cylinder, and inline six-cylinder engines.

Claims

1. An engine for a drone with separated oil and gasoline, comprising a crankcase (1), an air intake duct (11) and an oil injection nozzle (12), the crankcase (1) being connected to a cylinder block (2), a crankshaft (3) being arranged in the crankcase (1), the crankshaft (3) driving a connecting rod to rotate, and characterized in that: The crankshaft (3) passes through the crankcase (1), and an extension shaft (31) of the crankshaft (3) extends to the outside of the side wall of the crankcase (1); a roller bracket (4) is provided on the extension shaft (31); an oil hose (5) is provided on the periphery of the roller bracket (4), and a roller (6) is provided on the roller bracket (4), and the roller (6) is pressed on the oil hose (5) and is in contact with and connected to the oil hose (5); the oil hose (5) is wrapped around the roller bracket (4), and one end of the oil hose (5) is connected to the oil tank (51). The other end of the oil hose (5) passes through the crankcase (1) and is arranged opposite to the crankshaft (3) and the connecting rod; the oil tank (51) is arranged in the cabin of the UAV; the roller (6) includes a main roller (66) and two auxiliary rollers (67), and the main roller (66) and the two auxiliary rollers (67) are distributed on the roller bracket (4) in a triangular structure. The main roller (66) is in contact with the upper end of the oil hose (5), and the auxiliary rollers (67) are in contact with both sides of the oil hose (5).

2. The UAV engine with oil and gasoline separation according to claim 1 is characterized in that: Roller bearings (61) are provided at both ends of the roller (6), and the roller (6) and the roller bearings (61) are fixed to the roller bracket (4) via bearing pins (62).

3. The UAV engine with oil and gasoline separation according to claim 2 is characterized in that: The roller (6) is provided with an inner roller retaining spring (63) and an outer roller retaining spring (64), wherein the inner roller retaining spring (63) is located on the roller bearing (61), and the outer roller retaining spring (64) is fixed to a bearing pin (62) at the outer upper end of the roller bracket (4).

4. The UAV engine with oil and gasoline separation according to claim 3 is characterized in that: A bearing positioning sleeve (65) is also provided on the bearing pin (62), and the bearing positioning sleeve (65) is located on the roller bearing (61) inside the roller bracket (4).

5. The UAV engine with oil and gasoline separation according to claim 1 is characterized in that: A crankshaft bearing (32) is provided on the extended shaft (31), an oil seal (33) is provided on the crankshaft bearing (32), and the oil seal (33) seals the extended shaft (31) on the side wall of the crankcase (1).

6. The UAV engine with oil and gasoline separation according to claim 1 is characterized in that: The crankcase (1) is provided with a crankshaft outer case (13), and the extension shaft (31) and the roller bracket (4) are located inside the crankshaft outer case (13); a pressure cover (7) is provided on the crankshaft outer case (13), and the pressure cover (7) is fixed to the crankshaft outer case (13) by a flat head screw (71).

7. The UAV engine with oil and gasoline separation according to claim 1 is characterized in that: A flat key (34) is provided on the extension shaft (31), and a limiting groove (41) adapted to the flat key (34) is provided on the inner wall of the roller bracket (4).

8. The UAV engine with oil and gasoline separation according to claim 1 is characterized in that: The roller bracket (4) is fixed to the extension shaft (31) by a bracket outer retaining spring (42); a bracket bearing (43) is provided on the outer side of the bracket outer retaining spring (42), and the bracket bearing (43) is mounted on the extension shaft (31).

9. The method for using the UAV engine with oil and gasoline separation according to claim 1 is characterized in that: The following steps are involved: Step 1: The servo simultaneously activates the valve plate and the fuel injector (12) in the air intake duct (11). The air in the air intake duct (11) and the gasoline in the fuel injector (12) enter the crankcase (1). The air and gasoline are mixed and atomized, and the gasoline is burned to start the UAV engine. Step 2: After the UAV engine is started, the crankshaft (3) rotates, and the extension shaft (31) of the crankshaft (3) rotates accordingly, driving the roller bracket (4) to rotate, so that the roller (6) lightly presses on the oil hose (5) to rotate; Step 3: The roller (6) rotates to drive the oil in the oil hose (5) to flow; Step 4: The engine oil enters the crankcase (1) through the engine oil hose (5) to lubricate the crankshaft (3) and the connecting rod.

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