Engine

Abstract

The utility model provides an engine, which takes the direction of an air inlet pipe of the engine as the upward direction and comprises a crankshaft for engine transmission, the first cylinder body and the second cylinder body are horizontally arranged on the two sides of the crankshaft; the engine ignition system is connected with the first air cylinder body and the second air cylinder body and used for starting an engine; the engine ignition system comprises a magnetic flywheel which is arranged on the crankshaft in a sleeving mode and rotates synchronously with the crankshaft, a high-voltage pack assembly, an igniter assembly and a spark plug assembly, the magnetic flywheel rotates along with the crankshaft, then the high-voltage pack assembly generates breakdown voltage, and a first air cylinder body and a second air cylinder body are ignited through the igniter assembly and the spark plug assembly. And a piston in the engine is further driven to move. According to the engine provided by the utility model, the arranged engine ignition system is safe and reliable, the flameout condition of the engine can be avoided, and the engine has the advantages of simple and convenient ignition structure, high safety coefficient and strong reliability.

Description

Technical Field

[0001] The utility model relates to the field of engine manufacturing, in particular to an engine. Background Art

[0002] In the prior art, the crankshaft of the engine rotates, and a working cycle is completed through intake, compression, power generation, and exhaust. During the operation of a two-stroke opposed engine, if the engine stalls, the engine stops working, affecting production and life.

[0003] Existing methods for preventing engine stalls utilize a dual-motor control system, specifically a backup motor control system that activates in the event of an engine stall to prevent a sudden engine stop. However, this motor control system is located within the controller and connected to the motor, thereby controlling the engine's power output. However, if the engine's ignition system fails, this dual-motor control system cannot prevent engine stall. Therefore, there is a need for an engine with a simple and convenient ignition structure, a high safety factor, and strong stability to overcome these limitations. Utility Model Content

[0004] The purpose of the utility model is to provide an engine which can avoid the situation of engine stalling, has a simple structure, a high safety factor, and can output power stably and continuously.

[0005] In order to solve the above technical problems, the utility model provides an engine, which, with the direction of the engine intake pipe as the top, comprises: a crankshaft, a first cylinder block, a second cylinder block, and an engine ignition system, wherein the crankshaft is used for engine transmission; the first cylinder block is arranged on one side of the crankshaft; the second cylinder block is arranged on the other side of the crankshaft and is arranged horizontally with the first cylinder block; the engine ignition system is connected to the first cylinder block and the second cylinder block for starting the engine; the engine ignition system comprises: a magnetic flywheel, which is sleeved on the crankshaft and rotates synchronously with the crankshaft; a high-voltage package assembly, which comprises a first high-voltage package arranged above the magnetic flywheel and a second high-voltage package arranged below the magnetic flywheel; an igniter assembly , the igniter assembly includes a first igniter connected to the first high-voltage coil and a second igniter connected to the second high-voltage coil; the spark plug assembly includes a first spark plug connected to the first igniter and the second spark plug connected to the second igniter arranged on the first cylinder block, and a first spark plug connected to the first igniter and the second spark plug connected to the second igniter arranged on the second cylinder block; the spark plug assembly is used for engine ignition, thereby driving the piston movement in the first cylinder block and the second cylinder block; the magnetic flywheel rotates with the crankshaft, and the high-voltage coil assembly generates a breakdown voltage, and the first cylinder block and the second cylinder block are ignited through the igniter assembly and the spark plug assembly.

[0006] By installing a set of spark plugs in the first and second cylinder blocks, and connecting the high-voltage coils located above and below the magnetic flywheel to the first and second spark plugs, respectively, this system prevents engine ignition failures that could affect engine output, improving engine reliability and safety. This engine offers a simple and reliable ignition structure and stable engine power output.

[0007] Preferably, the high-voltage transformer assembly is connected to the casing end cover through a bracket; the first high-voltage transformer includes a first high-voltage transformer shell and a primary coil and a secondary coil adjacent to each other inside the first high-voltage transformer shell, and the primary coil is connected to the drive circuit; the primary coil and the secondary coil are sleeved on the iron core.

[0008] Preferably, the magnetic flywheel comprises a first magnet and a second magnet which are symmetrically arranged with the central axis of the crankshaft as a symmetry line, and the magnets are arranged opposite to each other along the diameter of the magnetic flywheel and rotate integrally with the magnetic flywheel.

[0009] Preferably, the bracket includes a first mounting hole and a second mounting hole, and the iron core includes a first connecting hole and a second connecting hole; the first mounting hole is fixed to the first connecting hole; and the second mounting hole is fixed to the second connecting hole.

[0010] Preferably, the crankshaft includes a front end shaft, and the magnetic flywheel is sleeved on the front end of the front end shaft; the magnetic flywheel is arranged on the front side of the casing end cover.

[0011] Preferably, the engine includes a rotor coupling; the rotor coupling includes a rotor gear that rotates synchronously with the front end shaft, and a propeller mounting seat connected to the rotor gear.

[0012] Preferably, the propeller mounting seat includes a fixed bearing and a fixed screw; the fixed screw is arranged along the circumference of the rotor gear and is used to connect the propeller and the rotor gear; the fixed bearing is used to fix the propeller.

[0013] Preferably, the first cylinder block and the second cylinder block are each provided with a fuel injector; the fuel injector is provided between the first spark plug and the second spark plug.

[0014] Preferably, the iron core is a silicon steel sheet; the outer ring of the magnetic flywheel is made of non-magnetic material, and the first magnet and the second magnet are embedded in the magnetic flywheel.

[0015] Preferably, the pistons of the first cylinder block and the second cylinder block are respectively connected to the crankshaft to drive the crankshaft to rotate.

[0016] The utility model provides an engine that, through a rotating magnetic flywheel, drives a high-voltage package arranged on both sides of the diameter of the magnetic flywheel to ignite the first cylinder block and the second cylinder block. The ignition structure is simple and the engine operation reliability is high, which can effectively avoid the occurrence of engine stalling, thereby improving the safety of engine operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0018] Figure 1 A schematic diagram of an engine structure provided in an embodiment of the present utility model Figure 1 .

[0019] Figure 2 A right side view of an engine provided in an embodiment of the present utility model.

[0020] Figure 3 A cross section of an engine along the AA1 direction provided by the embodiment of the present utility model Figure 1 .

[0021] Figure 4 This is a front view of an engine provided in an embodiment of the present utility model.

[0022] Figure 5 A cross-section of an engine along the BB1 ​​direction provided by the embodiment of the present utility model Figure 2 .

[0023] Figure 6 A schematic diagram of an engine structure provided in an embodiment of the present utility model Figure 2 .

[0024] Figure 7 A partial cross-sectional schematic diagram of an engine structure provided in an embodiment of the present utility model.

[0025] Figure 8 A cross section of an engine along the CC1 direction provided by the embodiment of the present utility model Figure 3 .

[0026] Figure 9 A schematic diagram of a partial explosion of an engine structure provided in an embodiment of the present utility model.

[0027] Description of Figure Numbers:

[0028] 100-Engine

[0029] 1-crankshaft; 11-front end shaft;

[0030] 2a-first cylinder block; 21-piston; 22-injector;

[0031] 2b-second cylinder block;

[0032] 3-Engine ignition system;

[0033] 31-magnetic flywheel; 311a-first magnet; 311b-second magnet; 312-outer ring;

[0034] 32 - High-voltage package assembly; 32a - First high-voltage package; 321 - First high-voltage package housing; 322 - Primary coil; 323 - Secondary coil; 324 - Iron core; 3241 - First connection hole; 3242 - Second connection hole; 325 - Bracket; 3251 - First mounting hole; 3252 - Second mounting hole; 326 - Drive circuit; 32b - Second high-voltage package;

[0035] 33-igniter assembly; 331-first igniter; 332-second igniter;

[0036] 34-spark plug assembly; 341-first spark plug; 342-second spark plug;

[0037] 4- receiver end cover;

[0038] 5-rotor coupling; 51-rotor gear; 52-propeller mounting seat; 521-fixed bearing; 522-fixed screw. DETAILED DESCRIPTION

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0040] To simplify the drawings, only the parts relevant to the present invention are schematically shown in each figure. They do not represent the actual structure of the product. In addition, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one."

[0041] It should be further understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0042] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0043] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0044] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without inventive work.

[0045] See also Figures 1 to 9 As shown, this embodiment provides an engine, which is a two-stroke opposed engine, generally used in the aviation field to provide power to aircraft. The engine in this embodiment includes a crankshaft 1, a first cylinder block 2a, a second cylinder block 2b and an engine ignition system 3. Figures 1 to 5With the engine intake pipe positioned upward, the crankshaft 1 is used for engine transmission. The first cylinder block 2a is located on one side of the crankshaft 1, and the second cylinder block 2b is located on the other side. The front side of the crankshaft 1 is the front end shaft 11, which is connected to the engine casing 321. The engine includes a casing end cover 4, through which the crankshaft 1 extends. The first cylinder block 2a is connected to the end of the front end shaft 11 of the crankshaft 1, and the second cylinder block 2b is located behind the first cylinder block 2a. The first cylinder block 2a and the second cylinder block 2b are arranged horizontally, that is, the first cylinder block 2a and the second cylinder block 2b are located in the same horizontal plane. The engine ignition system 3 is connected to the first cylinder block 2a and the second cylinder block 2b, igniting the fuel in the first cylinder block 2a and the second cylinder block 2b. This, in turn, compresses and releases the air in the first cylinder block 2a and the second cylinder block 2b, driving the crankshaft 1 to rotate and achieve engine power output. Specifically, in this embodiment, the engine ignition system 3 includes a magnetic flywheel 31 mounted on the crankshaft 1. The magnetic flywheel 31 is arranged on the front end shaft 11 of the crankshaft 1 and is located on the front side of the engine casing end cover 4. The magnetic flywheel 31 rotates synchronously with the crankshaft 1; the high-voltage coil assembly 32 is arranged above and below the magnetic flywheel 31, and the high-voltage coil assembly 32 is connected and fixed to the engine casing end cover 4. The high-voltage coil assembly 32 includes a first high-voltage coil 32a arranged above the magnetic flywheel 31 and a second high-voltage coil 32b arranged below the magnetic flywheel 31. The structure and installation method of the first high-voltage coil 32a and the second high-voltage coil 32b are exactly the same. Taking the first high-voltage coil 32a as an example, the first high-voltage coil 32a includes a high-voltage coil shell 321 and a primary coil 322 and a secondary coil 323 arranged inside the shell 321. The primary coil 322 and the secondary coil 323 are connected by an iron core 324. Therefore, during the rotation of the magnetic flywheel 31, magnetic induction occurs between the primary coil 322 and the secondary coil 323. The primary coil 322 is connected to the drive circuit 326. When the drive circuit 326 supplies power to the primary coil 322, since the number of turns of the secondary coil 323 is much greater than that of the primary coil 322, the voltage provided by the drive circuit 326 to the primary coil 322 is converted into a breakdown voltage at the end of the secondary coil 323 through electromagnetic induction. The voltage value of the breakdown voltage is positively correlated with the number of turns of the secondary coil 323. The more turns of the secondary coil 323 than the primary coil 322, the higher the breakdown voltage. In this embodiment, the spark plug ignites the fuel in the engine only when the breakdown current reaches 15 kV. When the primary voltage of the power supply ignition is 12 V, that is, the coil turns ratio of the primary coil 322 to the secondary coil 323 is 1:1250, therefore, the coil turns ratio of the secondary coil 323 to the primary coil 322 should be greater than 1000.The igniter assembly 33 is connected to the high-voltage package assembly 32. The igniter assembly 33 is arranged corresponding to the high-voltage package assembly 32. That is, the first high-voltage package 32a is connected to the first igniter 331, and the second high-voltage package 32b is connected to the second igniter 332. The first igniter 331 and the second igniter 332 each include two ignition connectors. The spark plug assembly 34 includes a first spark plug 341 connected to the first igniter 331 and a second spark plug 342 connected to the second igniter 332. A group of spark plug assemblies 34 are respectively provided on the first cylinder block 2a and the second cylinder block 2b, that is, a first spark plug 341 and a second spark plug 342 are provided on the first cylinder block 2a, wherein the first spark plug 341 is connected to the first igniter 331, and the second spark plug 342 is connected to the second igniter 332; the second cylinder block 2b is also provided with a first spark plug 341 and a second spark plug 342, and the connection method is consistent with the spark plug connection method on the first cylinder block 2a. The specific engine ignition method is described using the first cylinder 2a as an example. During the rotation of the magnetic flywheel 31, the first and second high-voltage coils 32a, 32b, respectively, generate a breakdown voltage on one side of the secondary coil 323 through electromagnetic induction. The breakdown voltage on one side of the secondary coil 323 ignites the gas fuel in the cylinder through the first igniter 331 and the second igniter 332. The fuel combustion generates a large amount of heat energy. Within the first cylinder 2a, due to pressure changes, the heat energy is converted into mechanical energy, causing the piston 21 to move, thereby driving the engine operation. Engines using this ignition method have a simple ignition system structure and greater reliability. If any spark plug fails to ignite, the engine can still operate normally and start, thus preventing engine failure from affecting the progress of the operation.

[0046] Each of the first and second cylinder blocks 2a, 2b is equipped with an injector 22, which continuously and steadily injects fuel into the first and second cylinder blocks 2a, 2b. The fuel ignited and burned by the spark plugs is the fuel injected by the injector 22. The injector 22 is located between the first and second spark plugs 341, 342, i.e., at the center of each cylinder block. This facilitates ignition of the fuel by the first and second spark plugs 341, 342, and ensures complete combustion.

[0047] In a preferred embodiment, the primary coil 322 and the secondary coil 323 are mounted on an iron core 324, and magnetic induction is generated through the iron core 324. Preferably, the iron core 324 is made of silicon steel sheets, which pass through the primary coil 322 and the secondary coil 323, with the tops connected. During power-on, the internal primary coil 322 and the secondary coil 323 are magnetized. During the period of maximum magnetic flux, the control circuit integrated within the first and second high-voltage transformers 32a, 32b suddenly disconnects the primary coil 322 circuit. At this time, the magnetic flux of the secondary coil 323 changes significantly, and the voltage of the primary coil 322 is amplified to the breakdown voltage, successfully igniting the first and second spark plugs 341, 342 connected to the high-voltage transformer assembly 32. During the process of controlling the current flow in the high-voltage transformer assembly 32, the magnetic flywheel 31 rotates with the crankshaft 1. Because the magnetic flywheel 31 is equipped with a magnet, when the magnet passes under the iron core 324, the magnetic flux within the primary coil 322 and the magnetic coil changes, thereby changing the breakdown current. In this embodiment, the magnetic flywheel 31 is provided with two symmetrical magnets. The first magnet 311a and the second magnet 311b are symmetrically arranged on the symmetry line with the central axis of the crankshaft 1. The first magnet 311a and the second magnet 311b are relatively arranged along the diameter of the magnetic flywheel 31, and the first magnet 311a and the second magnet 311b are embedded in the magnetic flywheel 31 and rotate integrally with the magnetic flywheel 31. It should be noted that when the magnetic flywheel 31 rotates, when the magnetic flux is maximum, the two ends of the first magnet 311a and the second magnet 311b, that is, the S pole and the N pole of the first magnet 311a and the second magnet 311b respectively correspond to the two ends of the primary coil 322 and the secondary coil 323 extending out of the iron core 324. In this embodiment, there is no restriction on the correspondence between the S pole and the N pole and the primary coil 322 and the magnetic pole coil 323, that is, in one case, the S pole corresponds to the primary coil 322, and the N pole corresponds to the secondary coil 323; in another magnetic flywheel, the N pole corresponds to the primary coil 322, and the S pole corresponds to the secondary coil 323. It should be noted that, since the engine's output power is constant, the magnetic flywheel 31 needs to be strong and lightweight. To prevent magnetization of the magnetic flywheel 31 during engine rotation, which could affect engine ignition, the outer ring 312 of the magnetic flywheel 31 is preferably made of a non-magnetic material, preferably a high-strength, non-magnetic material such as aluminum, copper, or zinc. An aluminum flywheel is chosen here to reduce operating costs. The first magnet 311a and the second magnet 311b are embedded in the aluminum flywheel. The two magnets in the magnetic flywheel 31 are intended to increase the ignition frequency and thus boost engine output power.

[0048] In one embodiment, the high-voltage transformer is fixed to the casing end cover 4 through a bracket 325. Specifically, the bracket 325 is fixed to one side of the casing end cover 4. A first mounting hole 3251 and a second mounting hole 3252 are provided on the bracket 325. The first mounting hole 3251 is connected to the first connecting hole 3241 at the top of the iron core 324. The second mounting hole 3252 is connected to the second connecting hole 3242 at the end of the iron core 324. The second connecting hole 3242 is provided at the bottom of the iron core 324 on the side where the primary coil 322 is located. The high-voltage transformer assembly 32 is fixed in this way.

[0049] In the engine provided in this embodiment, the engine includes a rotor coupling 5 for connecting to the flight wing. The rotor coupling 5 is mounted on the front end top of the crankshaft 1, that is, the front end of the front shaft 11. The rotor coupling 5 includes a rotor gear 51, which is mounted on the front shaft 11 and rotates with the front shaft 11. The rotor coupling 5 also includes a propeller mounting seat 52 for fixing the propeller. The propeller mounting seat 52 includes a fixed shaft, a fixed bearing 521, and a fixed screw 522. The fixed screw 522 is arranged circumferentially along the rotor gear 51 and is connected to the rotor gear 51. The propeller is mounted on the fixed screw 522. The fixed bearing 521 defines and fixes the propeller mounting position. The propeller rotates with the rotation of the rotor gear 51.

[0050] The pistons 21 of the first and second cylinder blocks 2a, 2b are connected to the crankshaft 1, respectively. As the fuel in the first and second cylinder blocks 2a, 2b is burned, the volume between the pistons 21 and the cylinder walls within the first and second cylinder blocks 2a, 2b continuously changes. As the fuel is burned, the volume between the pistons 21 and the cylinder walls increases, pushing the pistons 21 outward, driving the crankshaft 1 to rotate. When the fuel is completely burned, the combustion gases within the first and second cylinder blocks 2a, 2b are expelled, and the volume between the pistons 21 and the cylinder wall brackets 325 decreases, causing the pistons 21 to retract. The crankshaft 1 continues to rotate, the fuel injectors 22 spray fuel, and the spark plugs ignite the fuel, continuing combustion. In this way, the thermal energy and mechanical energy of the first and second cylinder blocks 2a, 2b are continuously converted, rotating the crankshaft 1, which in turn drives the propeller.

[0051] The present invention provides an engine in which a rotating magnetic flywheel 31 drives a high-voltage coil disposed on either side of the magnetic flywheel 31 to ignite the first cylinder 2a and the second cylinder 2b. A set of spark plugs is provided in each of the first and second cylinders 2a and 2b, and the high-voltage coils disposed on the upper and lower sides of the magnetic flywheel 31 are connected to the first spark plug 341 and the second spark plug 342, respectively. This prevents engine ignition failures that could affect engine output. Simultaneously, the fuel injector 22 is positioned between the first and second spark plugs 341 and 342 to ensure complete combustion of the fuel within the first and second cylinders 2a and 2b. This engine has a simple ignition structure and straightforward operation, requiring only power to ignite. This effectively prevents engine stalling, improves engine operating safety and reliability, and ensures stable and sustained engine output.

[0052] It will be apparent to those skilled in the art that various modifications and variations can be made to the exemplary embodiments described above without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations of the present invention that fall within the scope of the appended claims and their equivalents.

Claims

1. An engine, characterized in that: With the engine intake pipe in the direction of the upper part, including: A crankshaft, which is used for engine transmission; a first cylinder block, the first cylinder block being arranged on one side of the crankshaft; a second cylinder block, the second cylinder block being disposed on the other side of the crankshaft and being arranged horizontally with the first cylinder block; an engine ignition system, the engine ignition system being connected to the first cylinder block and the second cylinder block and being used to start the engine; The engine ignition system includes: A magnetic flywheel, the magnetic flywheel is sleeved on the crankshaft and rotates synchronously with the crankshaft; A high-voltage coil assembly, comprising a first high-voltage coil disposed above the magnetic flywheel and a second high-voltage coil disposed below the magnetic flywheel, wherein the high-voltage coil assembly has a built-in coil; An igniter assembly, the igniter assembly comprising a first igniter connected to the first high-voltage transformer and a second igniter connected to the second high-voltage transformer; a spark plug assembly, the spark plug assembly comprising a first spark plug disposed on the first cylinder block and connected to a first igniter, and a second spark plug disposed on the second cylinder block and connected to the first igniter, and a second spark plug disposed on the second cylinder block and connected to the second igniter; the spark plug assembly is used for engine ignition, thereby driving the movement of pistons in the first cylinder block and the second cylinder block; The magnetic flywheel rotates along with the crankshaft, and then the high-voltage transformer assembly generates a breakdown voltage, and the first cylinder block and the second cylinder block are ignited through the igniter assembly and the spark plug assembly.

2. An engine according to claim 1, characterized in that: The high-voltage transformer assembly is connected to the casing end cover through a bracket; the first high-voltage transformer includes a first high-voltage transformer shell and a primary coil and a secondary coil adjacent to each other inside the first high-voltage transformer shell, and the primary coil is connected to the drive circuit; the primary coil and the secondary coil are sleeved on the iron core.

3. An engine as claimed in claim 2, characterized in that: The magnetic flywheel includes a first magnet and a second magnet symmetrically arranged with the central axis of the crankshaft as a symmetry line. The first magnet and the second magnet are oppositely arranged along the diameter of the magnetic flywheel and rotate integrally with the magnetic flywheel.

4. An engine according to claim 3, characterized in that: The bracket includes a first mounting hole and a second mounting hole, and the iron core includes a first connecting hole and a second connecting hole; the first mounting hole is fixed to the first connecting hole; and the second mounting hole is fixed to the second connecting hole.

5. An engine as claimed in claim 4, characterized in that: The crankshaft includes a front end shaft, and the magnetic flywheel is sleeved on the front end of the front end shaft; the magnetic flywheel is arranged on the front side of the casing end cover.

6. An engine as claimed in claim 5, characterized in that: The engine includes a rotor coupling; the rotor coupling includes a rotor gear that rotates synchronously with the front end shaft, and a propeller mounting seat connected to the rotor gear.

7. An engine according to claim 6, characterized in that: The propeller mounting seat includes a fixed bearing and a fixed screw; the fixed screw is arranged along the circumference of the rotor gear and is used to connect the propeller and the rotor gear; the fixed bearing is used to fix the propeller.

8. An engine as claimed in claim 7, characterized in that: The first cylinder block and the second cylinder block are respectively provided with a fuel injector; the fuel injector is arranged between the first spark plug and the second spark plug.

9. An engine as claimed in claim 8, characterized in that: The iron core is a silicon steel sheet; the outer ring of the magnetic flywheel is made of non-magnetic material, and the first magnet and the second magnet are embedded in the magnetic flywheel.

10. An engine according to claim 9, characterized in that: The pistons of the first cylinder block and the second cylinder block are respectively connected to the crankshaft to drive the crankshaft to rotate.

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