Oscillating cylinder concentric rotor engine

Abstract

The invention discloses a swing cylinder concentric rotor engine which comprises a cylinder body, a spark plug, a combustion chamber, a gear, a rotor, a swing fulcrum, a connecting rod, a cylinder, a crank, an eccentric shaft, a main shaft, a swing piston, a gear center fulcrum and a connecting rod fulcrum. A swing fulcrum is arranged at the end of each rotor blade, a gear center fulcrum is arranged on each rotor blade, the swing fulcrums of the rotor blades are connected with swing pistons through hinges, connecting rod fulcrums are arranged at the ends of the swing pistons, and connecting rods are hinged to the connecting rod fulcrums through hinges. Compared with the prior art, the engine has the advantages that the engine is different from a traditional internal combustion engine and a rotor engine, the advantages of the internal combustion engine and the rotor engine are absorbed, the defects of the internal combustion engine and the rotor engine are abandoned, the power source technology of a reciprocating piston type engine is utilized, power transmission is achieved through a crank rocker mechanism, and the power source technology of the rotor engine is utilized; in this way, a power source acting on the rotor blades is utilized, the same engine has the power of a reciprocating piston type engine and the power of a rotor engine at the same time, and therefore better economical efficiency is achieved, and the power is higher. And the technology is completely independent, wide development prospects are achieved, the structure is simple, vibration is reduced, work is stable, the working efficiency of the engine can be more effectively improved, the manufacturing cost is reduced, and better benefits are obtained.

Description

Technical Field

[0001] This invention relates to the field of internal combustion engines, specifically to a oscillating cylinder concentric rotor engine. Background Technology

[0002] In today's era that advocates environmental protection, conservation, and green energy, internal combustion engines cannot be phased out in the short term. Improving engine power, fuel efficiency, and economy is urgently needed. Traditional internal combustion engines are mainly reciprocating piston engines, but their structure is complex, manufacturing costs are high, the technology is monopolized by the West, technological improvements are difficult, competition is fierce, R&D investment is large, and returns are minimal. While the rotary engine, which Mazda is still researching, is quiet, has uniform torque, and strong power, it has high fuel consumption, high process and cost requirements, and also faces significant technical challenges, making it difficult to achieve better performance. This invention combines the working principles of both reciprocating piston engines and rotary engines, eliminating their shortcomings and leveraging their advantages to develop this unique oscillating cylinder concentric rotary engine. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: a swing cylinder concentric rotor engine, comprising a cylinder block, spark plug, combustion chamber, planetary gears, rotor, swing pivot, connecting rod, cylinder, crank, eccentric shaft, main shaft, swing piston, gear center pivot, and connecting rod pivot. A main shaft is provided inside the cylinder block, and a rotor with three rotor blades is mounted on the main shaft. Each rotor blade has a swing pivot at its end and a gear center pivot on each rotor blade. The swing pivot of the rotor blade is connected to the swing piston via a hinge. The end of the swing piston has a connecting rod pivot, and the connecting rod pivot is hinged to a connecting rod via a hinge. The end of the connecting rod is hinged to a gear at a corresponding position via an eccentric shaft. There are four gears in total, of which three planetary gears are mounted on each rotor blade. An eccentric shaft is provided on the planetary gear and is hinged to the connecting rod. The connecting rod is hinged to the swing piston, and the swing piston is hinged to the rotor, forming a crank-rocker mechanism. The remaining central sun gear is mounted and fixed on the end cover, coaxial with the main shaft, and meshes with the other three planetary gears to form a planetary gear transmission mechanism.

[0004] Three planetary gears mesh with the central fixed gear (the three gears are half the size of the central sun gear, i.e., a gear ratio of 1:2) and rotate around the central gear, rotating together with the rotor. For every one revolution of the rotor, each of the three gears rotates around the central gear (one revolution around the sun gear) and rotates twice on its own axis. The crankshaft and connecting rod mechanism's rocker arm oscillates back and forth four times, completing the four strokes of the oscillating cylinder. The intake and exhaust ports can be designed on the end caps, referring to the intake and exhaust design of a rotary engine. This design has three cylinders; for every one revolution of the rotor, each of the three cylinders completes one of the four strokes, i.e., one working cycle.

[0005] This forms two sets of engine power sources that generate power:

[0006] 1. The gas power inside the cylinder drives the rocker arm, which is transmitted to the planetary gears through the crank-rocker mechanism. The planetary gears mesh with the central sun gear, forcing the planetary gears to rotate around the central sun gear, and the torque is transmitted to the rotor and the main shaft.

[0007] 2. The gas pressure inside the cylinder not only acts on the swing piston, but also on the side of the rotor blades, generating thrust to make the rotor and main shaft rotate directly and generate torque.

[0008] This invention fully utilizes the advantages of traditional piston internal combustion engines and rotary engines.

[0009] 1. Simple structure and good processing performance.

[0010] This invention eliminates the complex structures of reciprocating piston engines, such as crankshaft connecting rod mechanism and valve train, and adopts the advantages of rotary engines, simplifying the structure, saving costs, and having the advantages of good processing technology, easy to ensure fitting accuracy, and long service life.

[0011] (1) The main shaft and rotor are connected by sliding bearings, which provides high rotational accuracy, high speed, and long service life. In contrast, the Mazda rotary engine uses gears to connect the rotor and main shaft, which results in severe friction and wear. Wear affects rotational accuracy and has a significant impact on cylinder sealing.

[0012] (2) Rotational accuracy is guaranteed. The spindle and the center wheel are in sliding friction contact, and there is no contact wear between the rotor and the cylinder, making it easy to achieve cylinder sealing.

[0013] (3) The rotor and stator (between the cylinder circumference and the cylinder block), the swing piston and the side of the rotor can all be sealed with strip seals similar to those of a rotary engine, so that the seals are reliable and the working efficiency is high.

[0014] 2. Both gasoline and diesel internal combustion engines are acceptable.

[0015] This design avoids the limitation of rotary engines, whose compression ratio cannot be significantly adjusted and is unsuitable for diesel engines. Instead, it allows for arbitrary compression ratio adjustments as needed, making it suitable for both gasoline and diesel internal combustion engines.

[0016] 3. Smooth rotation and minimal vibration

[0017] It overcomes the shortcomings of traditional engines, such as large reciprocating vibration and poor balance, and utilizes the advantages of rotary engines, such as smooth rotation and low vibration.

[0018] 4. High combustion efficiency

[0019] The combustion of fuel gas involves two parts: first, the combustion chamber, composed of the cylinder block, the oscillating piston, and the rotor impeller, generates energy during fuel combustion, which acts on the oscillating piston to create gas pressure. This pressure is then transmitted to the planetary gears via the connecting rod (two-force bar). The planetary gears mesh with the central gear and rotate around it, driving the rotor to rotate (this is similar to the piston-driven crankshaft rotation in a traditional engine; the basic operating conditions are the same, and the efficiency is not significantly different, even if it is slightly lower). (See attached diagram.) Figure 8 Secondly, the gas pressure acting on the impeller side is close to the tangential direction of the main shaft rotation, directly driving the impeller to rotate and obtain greater torque. Compared with the Mazda rotary engine, the torque efficiency is several times higher. Here, as the swing piston angle increases, the cylinder volume increases, and the gas pressure decreases. In both traditional engines and rotary engines, the pressure acting on the piston gradually decreases (F=pA), and the torque also gradually decreases. However, in this design, although the gas pressure decreases, the force-bearing area acting on the blade side increases exponentially, so the thrust torque may not necessarily decrease, and may even increase. Figure 9 Furthermore, its effect is far superior to that of a swing piston, resulting in a highly efficient engine that surpasses all current engines in the world. In contrast, Mazda's rotary engine only provides a partial force to the rotor due to gas pressure. Similarly, the gas pressure within the cylinder decreases as the cylinder volume increases, reducing the torque difference acting on the rotor and leading to low combustion efficiency. Figure 10 The forces acting on the rotor produce torques about the center of rotation in both directions, but the truly effective torque is only the difference between them. For example, the right direction of the white arrow produces a reverse torque, while the torque is zero when the white arrow passes through the center of rotation. The useful torque is only generated to the left of the white arrow. Clearly, the power of this rotary engine is superior to that of the Mazda rotary engine. This design combines the power of a reciprocating piston engine and a rotary engine in one unit.

[0020] Furthermore, even during the compression stroke, in a traditional engine, all the resistance is resistance. However, during this compression stroke, as the compression volume decreases, the pressure increases, and the pressure acting on the side of the rotor blades causes the rotor to rotate, thus becoming part of the power and generating torque on the rotor.

[0021] 5. The technology of this invention is completely new and independently developed.

[0022] It has broad development prospects, and features a simple structure, low vibration, and stable operation, which can more effectively improve engine efficiency, reduce manufacturing costs, and achieve better benefits.

[0023] The above description illustrates the basic principles, main features, and advantages of this design. Those skilled in the art should understand that this design is not limited to the examples described above. The examples and descriptions are merely illustrative of the design principles. Without departing from the spirit and scope of this design, various variations and improvements are possible, and there is significant room for optimization and enhancement. (For example, it could be designed with two or four cylinders, or even modified into a six-stroke design.) Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of a concentric rotor engine with a oscillating cylinder. (Three-dimensional diagram attached, same below)

[0025] Figure 2 This is a schematic diagram of the rotor structure of a oscillating cylinder concentric rotor engine.

[0026] Figure 3 This is a schematic diagram of the connecting rod structure of a oscillating cylinder concentric rotor engine.

[0027] Figure 4 This is a schematic diagram of the structure of the swing piston in a swing cylinder concentric rotor engine.

[0028] Figure 5 This is a schematic diagram of the connection between the connecting rod and the planetary gear in a oscillating cylinder concentric rotor engine.

[0029] Figure 6 This is a schematic diagram showing the positions of the intake and exhaust ports on the end cover of a concentric rotor engine with a swing cylinder. (Intake and exhaust ports are provided on both end covers (specific locations depend on design requirements)). Figure 6 (As shown).

[0030] Figure 7 This is an exploded view (symmetrical layout on both the upper and lower sides) of a swing cylinder concentric rotor engine assembly.

[0031] Figure 8 Figure 9 This is a force analysis diagram of the gas pressure in the cylinder of a oscillating cylinder concentric rotor engine.

[0032] Figure 10 This is a diagram showing the gas pressure and force analysis of a Mazda rotary engine.

[0033] Figure 11 This is a schematic diagram showing the location of an example cylinder.

[0034] As shown in the figure: 1. Cylinder block, 2. Spark plug, 3. Combustion chamber, 4. Planetary gear, 5. Rotor, 6. Oscillating hinge point, 7. Connecting rod, 8. Cylinder, 9. Crank (between the gear center and the eccentric shaft), 10. Eccentric shaft, 11. Oscillating piston, 12. Connecting rod and oscillating piston hinge point, 13. Central sun gear, 14. Main shaft, 15. Planetary gear central pivot point. Detailed Implementation

[0035] The design will now be described in further detail with reference to the accompanying drawings.

[0036] In specific implementation, the present invention is illustrated in Figures 1 to 12. Figure 7 The embodiments shown (this invention only considers the engine principle design, not a specific physical design; the specific physical design can be designed according to engine parameters and other requirements. This design is used as an example for principle explanation; the rotor diameter in this example is 250mm (mainly for drawing purposes; the extreme position angle of the crank-rocker mechanism in this example is 23 degrees). Specifically, one working cycle is taken as an example:

[0037] 1. When the engine is started, the rotor begins to rotate, driving the planetary gears to rotate, which in turn drives the rocker arm mechanism to swing the oscillating piston. When the rotor rotates to the position shown in the diagram ( Figure 11 When the cylinder is in position 1 below, the cylinder volume is at its minimum. If the rotor continues to rotate, the swing piston begins to swing towards the center of the main shaft. When the rotor rotates 101.5 degrees, the planetary gear also rotates to 203 degrees (the ratio of the number of teeth of the central gear to the planetary gear is 1:2). The cylinder volume increases from the minimum to the maximum, the air pressure inside the cylinder decreases, and the intake stroke is achieved.

[0038] 2. The rotor continues to rotate due to inertia, the swing piston begins to swing back, the rotor rotates another 78.5 degrees, and when the planetary gear rotates 157 degrees, the cylinder volume decreases from the maximum to the minimum. At this time, the rotor has rotated a total of 180 degrees, the planetary gear has rotated 360 degrees, the cylinder pressure rises, and the compression stroke is achieved.

[0039] 3. When the cylinder reaches the end of the compression stroke, the ignition is performed and the gas expansion pressure pushes the swing piston to swing. The planetary gear rotates and drives the swing piston to swing towards the center of the main shaft for the second time. The connecting rod pushes the planetary gear to rotate, which in turn drives the rotor and the main shaft to rotate. At the same time, the side of the rotor blades in the cylinder is also pushed by the gas pressure to rotate the rotor and the main shaft. From 180 degrees, the rotor rotates 101.5 degrees, and the planetary gear rotates 203 degrees until the cylinder volume is at its maximum, completing the power stroke.

[0040] 4. At this time, the rotor continues to rotate under the action of inertial force, and the swing piston begins to swing back, reducing the sealing volume. The rotor rotates another 78.5 degrees, and the planetary gear rotates 157 degrees, realizing the exhaust stroke. In this way, the rotor rotates exactly one revolution, and the planetary gear rotates exactly two revolutions, realizing one working cycle.

[0041] As attached Figures 1 to 7 In the illustrated embodiment, spark plugs are mounted on the cylinder block (not required for diesel engines), and fuel injectors may also be included, depending on the fuel type. Intake and exhaust devices are provided on the front or rear end covers. Figure 6 ).

Claims

1. A oscillating cylinder concentric rotor engine, comprising a cylinder block (1), a cylinder block (2), a spark plug (3), a combustion chamber (4), a planetary gear (5), a rotor (6), an oscillating pivot (7), a connecting rod (8), a cylinder (9), a crank (composed of the planetary gear center and an eccentric shaft) (10), an eccentric shaft (11), an oscillating piston (12), a connecting rod and oscillating piston hinge pivot (13), a central sun gear, (14) a main shaft, and (15) a planetary gear center pivot. Its characteristics are: The cylinder body (1) is provided with a main shaft (14), and a rotor (5) with three rotor blades is mounted on the main shaft (14). Each rotor blade has a swing hinge fulcrum (6) at its end and a gear center fulcrum (15) on each rotor blade. The swing fulcrum (6) of the rotor blade is connected to a swing piston (11) by a hinge. The swing piston (11) has a connecting rod fulcrum (12) at its end. The connecting rod fulcrum (12) is hinged to a connecting rod (7). The end of the connecting rod (7) is provided with a connected eccentric shaft (10) that is hinged to the center of the planetary gear (4) to form a crank (9). There are three planetary gears (4). They are installed at the rotation center of each rotor blade to achieve hinge with the crank (9) and mesh with the central sun gear (13) to form a planetary gear transmission mechanism.

2. The oscillating cylinder concentric rotor engine according to claim 1, characterized in that: The swing piston (12) has a swing fulcrum (6) at its end, and the swing fulcrum (6) of the swing piston (12) is hinged to the swing fulcrum (6) of the rotor blade through a hinge.

3. The oscillating cylinder concentric rotor engine according to claim 1, characterized in that: The rotor is equipped with planetary gears (4), and an eccentric shaft (10) is provided on the planetary gears (4) to form a crank (9).

4. A concentric rotor engine with a oscillating cylinder according to claim 1, characterized in that: The crank (9) is hinged to the connecting rod (7), and the connecting rod (7) is hinged to the swing piston (6) to form a crank-rocker mechanism.

5. A concentric rotor engine with a swing cylinder according to claim 1, characterized in that: The planetary gear (4) on the rotor (5) and the fixed central sun gear (13) form a planetary gear transmission mechanism.

6. A concentric rotor engine with a oscillating cylinder according to claim 1, characterized in that: The engine's power source is the working pressure of the gas combustion gas applied to the oscillating piston (11), which is first transmitted to the planetary gear (4) through the crank rocker mechanism. The planetary gear (4) meshes with the central sun gear (13) and rotates around the sun gear (13) and rotates on its own axis. Then, the power is transmitted to the rotor (5) and the main shaft (14), so that the engine obtains power.

7. A concentric rotor engine with a oscillating cylinder according to claim 1, characterized in that: The rotor (5) in each cylinder (8) is also subjected to the same gas pressure, which drives the rotor (5) and the main shaft (14) to rotate, thus giving the engine power.

8. A concentric rotor engine with a oscillating cylinder according to claim 1, characterized in that: An engine has the combined power of a reciprocating piston engine and a rotary engine.

9. A concentric rotor engine with a oscillating cylinder according to claim 1, characterized in that: The number of cylinders (8) can be designed as two, three, or four, and the rotor (5) blades are designed accordingly, depending on the power requirements.

10. A oscillating cylinder concentric rotor engine according to claim 1, characterized in that: The cylinder compression ratio of this invention can be designed as needed and is not limited to gasoline engines. It can also be used in diesel engines and other internal combustion engines.

Images