Horizontally-opposed double-cylinder two-stroke air-cooled diesel engine

Abstract

The invention discloses a horizontally-opposed double-cylinder two-stroke air-cooled diesel engine, and relates to the technical field of diesel engines. The diesel engine comprises a crankshaft connecting rod piston mechanism, an air inlet mechanism, a fuel oil system, a front rack, a rear rack, a crankcase, a connecting disc, a cylinder cover and a cylinder body, air cooling is adopted for the diesel engine, air cooling heat dissipation fins are arranged on the cylinder body and the cylinder cover, the high-pressure electronic control fuel oil system is used for supplying oil, a spray lubrication mode is adopted for lubrication, a compression ignition type combustion mode is adopted, and the air cooling heat dissipation fins are arranged on the cylinder body and the cylinder cover. The horizontally-opposed two-stroke air-cooled compression ignition type diesel engine can adopt common vehicle diesel oil as fuel, has the characteristics of being convenient to assemble, small in structural size and light in weight, and solves the problem that a traditional horizontally-opposed double-cylinder two-stroke air-cooled engine can only adopt gasoline and kerosene as fuel.

Description

Technical Field

[0001] The invention relates to the technical field of diesel engines, in particular to a horizontally opposed twin-cylinder two-stroke air-cooled diesel engine. Background Art

[0002] Since compression ignition diesel engines have the characteristics of low fuel consumption and high torque, they have great fuel consumption advantages for small aircraft for special purposes, especially aircraft that require a long endurance. Compared with the flammable and explosive characteristics of gasoline and kerosene fuels, diesel fuel is a relatively safe fuel that can be stored conveniently for a long time. In some special application scenarios, the safety requirements for fuel are more important, so horizontally opposed twin-cylinder two-stroke air-cooled engines that can burn diesel can be better used in these fields.

[0003] However, the existing horizontally opposed twin-cylinder two-stroke air-cooled engines used in the field of small aircraft engines often have some special requirements for power, volume, weight, power-to-weight ratio, etc. Therefore, such engines often use gasoline engines and kerosene engines as power solutions. Diesel engines are often difficult to start due to weight issues and other problems. In terms of power, volume, weight, power-to-weight ratio, etc., they cannot be compared with gasoline and kerosene engines.

[0004] Therefore, the existing horizontally opposed twin-cylinder two-stroke air-cooled diesel engine cannot meet the needs in actual use, so there is an urgent need for improved technology on the market to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a horizontally opposed twin-cylinder two-stroke air-cooled diesel engine, which solves the problems raised in the above-mentioned background technology through its configuration.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a horizontally opposed twin-cylinder two-stroke air-cooled diesel engine, comprising a crankshaft, a connecting rod, a piston, a crankcase, a cylinder block, a cylinder head, an electronically controlled high-pressure pump, an electronically controlled fuel injector, a high-pressure oil pipe, a glow plug, a front frame, a rear frame, a connecting plate, an intake duct, a reed valve, a speed sensor, and an intake pressure and temperature sensor. The crankcase is divided into front and rear halves, which are bolted together to form an integral part. The crankshaft, the connecting rod, and the piston are installed inside the crankcase as an integral component. The front frame and the rear frame are bolted to the crankcase. The cylinder block is connected to the closed crankcase by bolts, the cylinder head and the cylinder block are connected together by bolts, the electronically controlled injector is installed on the cylinder head by bolts, the glow plug is directly installed on the cylinder head by threads, the reed valve and the intake duct are installed on the closed crankcase by bolts, the electronically controlled high-pressure pump is installed on the rear frame by bolts, the speed sensor is directly installed on the front frame by threads, the connecting plate is connected to the crankshaft output end by conical surface compression connection, and the intake pressure temperature sensor is installed on the intake duct by bolts.

[0007] Preferably, the electronically controlled high-pressure pump is mounted on the rear frame by bolt connection, and the rear frame is provided with oil inlet and return holes for lubricating oil. Specifically, the lubricating oil enters the inner chamber of the rear frame to circulate and lubricate the electronically controlled high-pressure pump.

[0008] Preferably, the cylinder head is provided with an electronically controlled fuel injector mounting hole and a bolt connection hole, and the electronically controlled fuel injector is inserted into the cylinder head and then mounted on the cylinder head by bolt connection.

[0009] Preferably, the cylinder head is provided with a threaded hole for installing the glow plug Specifically, a glow plug is inserted into a combustion chamber of a cylinder head to heat the air temperature in the combustion chamber.

[0010] Preferably, a mounting seat for an intake pressure temperature sensor is provided on the intake duct, and the intake pressure temperature sensor is mounted on the intake duct by bolts. Specifically, the air pressure and temperature of the air entering the engine are monitored in real time through an intake pressure and temperature sensor.

[0011] Preferably, a mounting seat for a lubricating oil injector is provided on the air intake duct, and the lubricating oil injector can be mounted on the air intake duct by bolts. Specifically, the injector can penetrate deep into the intake passage to inject lubricating oil, thereby lubricating the engine.

[0012] Preferably, the outer ring of the connecting disk is processed with signal teeth for identifying the engine speed and phase signal, and is processed with a plurality of threaded holes as a connecting flange of the engine output end.

[0013] Preferably, the speed sensor is directly mounted on the front frame through threads, and a certain installation gap is maintained between the speed sensor and the signal teeth on the outer ring of the connecting plate.

[0014] Specifically, the speed sensor can collect the speed and phase signals of the engine crankshaft when the engine is working.

[0015] The present invention has the following beneficial effects: The present invention adopts diesel as fuel, which is easy to assemble, has a compact structure and light weight. The electronically controlled high-pressure pump and the electronically controlled fuel injector can accurately control the diesel injection amount. The structure is compact and the layout is simple, which is conducive to reducing the overall width and height of the engine. The layout of the speed sensor and the connecting plate can minimize the installation layout structure of the signal teeth to the greatest extent, which is conducive to reducing the parts of the signal system.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the overall explosion structure of the present invention.

[0020] Figure 3 This is a schematic diagram of the installation of the electronically controlled high-pressure pump of the present invention.

[0021] Figure 4 It is a schematic diagram of the installation of the electronically controlled fuel injector of the present invention.

[0022] Figure 5 It is a schematic diagram of the installation of the glow plug of the present invention.

[0023] Figure 6 It is a schematic diagram of installing the intake pressure temperature sensor of the present invention.

[0024] Figure 7 This is a schematic diagram of the installation of the lubricating oil injector of the present invention.

[0025] Figure 8 It is a schematic diagram of the installation of the rotation speed sensor of the present invention.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1-crankshaft, 2-connecting rod, 3-piston, 4-crankcase, 5-cylinder block, 6-cylinder head, 7-electronically controlled high-pressure pump, 8-electronically controlled fuel injector, 9-high-pressure oil pipe, 10-glow plug, 11-front frame, 12-rear frame, 13-connecting plate, 14-intake duct, 15-reed valve, 16-speed sensor, 17-intake pressure and temperature sensor, 18-lubricating oil injector mounting seat, 19-oil inlet and return holes, 20-electronically controlled fuel injector mounting hole, 21-combustion chamber, 22-mounting seat of intake pressure and temperature sensor, 23-inside of intake duct, 23-signal tooth, 24-threaded hole of connecting plate, 25-mounting clearance. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] The injector 8 is mounted on the cylinder head 6 by bolt connection, the glow plug 10 is directly mounted on the cylinder head 6 by threads, the reed valve 15 and the intake duct 14 are mounted on the closed crankcase 4 by bolt connection, the electronically controlled high-pressure pump 7 is mounted on the rear frame 12 by bolt connection, the speed sensor 16 is directly mounted on the front frame 11 by threads, the connecting plate 13 is connected to the output end of the crankshaft 1 by a conical surface compression connection, and the intake pressure temperature sensor 17 is mounted on the intake duct 14 by bolts.

[0029] like Figure 3 As shown, the electronically controlled high-pressure pump 7 is installed on the rear frame 12 by bolt connection. The rear frame 12 is provided with oil inlet and return holes 19 for lubricating oil. The lubricating oil enters the internal chamber of the rear frame 12 to circulate and lubricate the electronically controlled high-pressure pump 7.

[0030] like Figure 4 As shown, the cylinder head 6 is provided with an electronic fuel injector mounting hole 20 and a bolt connection hole. After the electronic fuel injector 8 is inserted into the cylinder head 6, it is installed on the cylinder head by bolt connection.

[0031] like Figure 5 As shown, the cylinder head 6 is provided with threaded holes for installing the glow plug 10 , and the glow plug 10 is inserted into the cylinder head combustion chamber 21 to heat the air temperature in the combustion chamber.

[0032] like Figure 6 As shown, a mounting base 22 of an intake pressure temperature sensor is provided on the intake duct 14, and an intake pressure temperature sensor 17 is installed on the intake duct 14 by bolts for real-time monitoring of the pressure and temperature of the air entering the engine.

[0033] Figure 7 The lubricating oil injector installation diagram of the present invention is described as follows: Figure 7As shown, a mounting base 18 for a lubricating oil injector is provided on the intake duct 14. The lubricating oil injector can be installed on the intake duct 14 by bolts. The injector can penetrate into the interior 23 of the intake duct to spray the lubricating oil. The air enters from the upper part of the intake duct 14 and mixes with the lubricating oil before entering the engine, thereby lubricating the engine.

[0034] like Figure 8 As shown, the outer ring of the connecting plate 13 is processed with signal teeth 23 for identifying the engine speed and phase signals, and a plurality of connecting plate threaded holes 24 are processed as the connecting flange of the engine output end. The speed sensor 16 is directly installed on the front frame 11 through threads. The speed sensor 16 and the signal teeth 23 on the outer ring of the connecting plate 13 maintain a certain installation gap 25. The speed sensor 16 can collect the speed and phase signals of the engine crankshaft when the engine is working.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0036] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A horizontally opposed twin-cylinder two-stroke air-cooled diesel engine, comprising a crankshaft (1), a connecting rod (2), a piston (3), a crankcase (4), a cylinder block (5), a cylinder head (6), an electronically controlled high-pressure pump (7), an electronically controlled fuel injector (8), a high-pressure oil pipe (9), a glow plug (10), a front frame (11), a rear frame (12), a connecting plate (13), an intake duct (14), a reed valve (15), a speed sensor (16), and an intake pressure temperature sensor component (17), characterized in that; The crankcase (4) is divided into two halves, front and rear halves, which are bolted together to form an integral part. The crankshaft (1), connecting rod (2) and piston (3) are installed as a whole inside the crankcase (4). The front and rear end surfaces of the crankcase (4) are respectively connected to the front frame (11) and the rear frame (12) by bolts. The cylinder block (5) is connected to the closed crankcase (4) by bolts. The cylinder head (6) is bolted to the cylinder block (5). The electronically controlled fuel injector (8) is bolted and installed on the cylinder head (6). ), the glow plug (10) is directly mounted on the cylinder head (6) by means of threads, the reed valve (15) and the intake duct (14) are mounted on the closed crankcase (4) by means of bolts, the electronically controlled high-pressure pump (7) is mounted on the rear frame (12) by means of bolts, the speed sensor (16) is mounted on the front frame (11) by means of threads, the connecting plate (13) is connected to the output end of the crankshaft (1) by means of a conical surface compression connection, and the intake pressure temperature sensor is mounted on the intake duct (14) by means of bolts.

2. A horizontally opposed twin-cylinder two-stroke air-cooled diesel engine according to claim 1, characterized in that: The electronically controlled high-pressure pump (7) is mounted on the rear frame (12) by means of bolts. The rear frame (12) is provided with oil inlet and return holes (19) for lubricating oil. The lubricating oil enters the internal chamber of the rear frame (12) to circulate and lubricate the electronically controlled high-pressure pump (7).

3. A horizontally opposed twin-cylinder two-stroke air-cooled diesel engine according to claim 1, characterized in that: The cylinder head (6) is provided with an electronically controlled fuel injector mounting hole (20) and a bolt connection hole. The electronically controlled fuel injector (8) is inserted into the cylinder head (6) and then mounted on the cylinder head (6) by bolt connection.

4. A horizontally opposed twin-cylinder two-stroke air-cooled diesel engine according to claim 1, characterized in that: The cylinder head (6) is symmetrically provided with threaded holes for installing the glow plug (10), and the glow plug (10) is inserted into the inner cavity of the combustion chamber (21) located at the upper part of the inner cavity of the cylinder body (5).

5. A horizontally opposed twin-cylinder two-stroke air-cooled diesel engine according to claim 1, characterized in that: The air intake duct (14) is provided with a mounting seat (21) for an air intake pressure temperature sensor, and the air intake pressure temperature sensor is mounted in the inner cavity of the air intake duct (14) by means of bolts.

6. A horizontally opposed twin-cylinder two-stroke air-cooled diesel engine according to claim 1, characterized in that: The air intake duct (14) is provided with a lubricating oil injector mounting seat (18), and the lubricating oil injector is mounted on the air intake duct (14) by means of bolts, and the output end of the injector penetrates into the interior (23) of the air intake duct to inject the lubricating oil.

7. A horizontally opposed twin-cylinder two-stroke air-cooled diesel engine according to claim 1, characterized in that: The outer ring of the connection disk (13) is processed with signal teeth (23) for identifying engine speed and phase signals, and a plurality of connection disk threaded holes (24) are provided as connection flanges for the engine output end.

8. A horizontally opposed twin-cylinder two-stroke air-cooled diesel engine according to claim 1, characterized in that: The rotation speed sensor (16) is directly mounted on the front frame (11) via threads, and a certain mounting gap (25) is maintained between the rotation speed sensor (16) and the signal teeth (23) on the outer ring of the connecting plate (13).

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