Cylinder body of air-cooling and water-cooling double-cylinder engine

Abstract

The utility model discloses a cylinder body of a wind and water cooling double-cylinder engine, which comprises a cylinder body and is characterized by further comprising radiating fins and a cooling water chamber, the cylinder body comprises a cylinder body I (1) and a cylinder body II (2), the cylinder body I (1) and the cylinder body II (2) are connected through a positioning pin pipe (12) and a sealing ring, and the positioning pin pipe (12) is connected with the cooling water chamber. The I cylinder body (1) and the II cylinder body (2) are both provided with radiating fins and cooling water chambers, the I cylinder body (1) is provided with an I cylinder water inlet (5), and the II cylinder body (2) is provided with a II cylinder water outlet (9). The cylinder sleeve of the two-cylinder engine is optimized, two cylinders are independent, two cooling modes of air cooling and water cooling are adopted, air and cooling water are used as cooling media, heat of high-temperature parts of the engine is taken away, the normal working temperature of the engine is guaranteed, the engine is stable and reliable during operation, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of twin-cylinder engines, in particular to a cylinder body of an air- and water-cooled twin-cylinder engine. Background Art

[0002] The two-cylinder diesel engine has a simple structure, small size and light weight, and is widely used in supporting micro-tillage machines, water pump units, generator sets, small engineering machinery and garden machines. At present, many two-cylinder diesel engines use air cooling to cool the engine, some use water cooling to cool the engine, and a very small number use both air and water cooling. The use of water-air dual cooling can effectively reduce the weight of the coolant and water tank, thereby reducing the weight of the engine assembly. At present, the two-cylinder engines on the market generally have the problem of excessive temperature affecting the engine power and service life, and the structure is relatively complex, the processing precision requirements are high, the production process is complex, and the production cost is relatively high. Utility Model Content

[0003] The purpose of the utility model is to provide a cylinder body of an air- and water-cooled two-cylinder engine in response to the problems of high cylinder body temperature, complex structure, great processing difficulty, low engine power and short service life. The cylinder liner of the two-cylinder engine is optimized, the two cylinders are independent, and two cooling methods of air cooling and water cooling are adopted. Air and cooling water are used as cooling media to take away the heat of high-temperature parts of the engine to ensure the normal operating temperature of the engine, make the engine stable and reliable during operation, and increase the service life.

[0004] The technical solution of the utility model is as follows:

[0005] A cylinder block of an air-water-cooled two-cylinder engine comprises a cylinder block, a heat sink and a cooling water chamber. The cylinder block comprises a cylinder I block and a cylinder II block. The cylinder I block and the cylinder II block are connected via a positioning pin tube and a sealing ring. Both the cylinder I block and the cylinder II block are provided with heat sinks and cooling water chambers. The cylinder I block is provided with a cylinder I water inlet, and the cylinder II block is provided with a cylinder II water outlet.

[0006] Furthermore, the heat sink includes a heat sink outside the cylinder body of cylinder I and a heat sink outside the cylinder body of cylinder II. The heat sink outside the cylinder body of cylinder I is arranged outside the periphery of the cylinder body of cylinder I, and the heat sink outside the cylinder body of cylinder II is arranged outside the periphery of the cylinder body of cylinder II.

[0007] Furthermore, the cooling water chamber includes a cylinder I cooling water chamber and a cylinder II cooling water chamber. The cylinder I cooling water chamber is embedded in the cylinder I cylinder body, and the cylinder II cooling water chamber is embedded in the cylinder II cylinder body. The cylinder I cooling water chamber and the cylinder II cooling water chamber are connected through a positioning pin pipe.

[0008] Furthermore, the cooling water chamber of cylinder I is connected to the water inlet of cylinder I, and the cooling water chamber of cylinder II is connected to the water outlet of cylinder II.

[0009] Furthermore, the water inlet of cylinder I is also connected to the water inlet flange of cylinder I.

[0010] Furthermore, the cylinder bodies of cylinder I and cylinder II are both cylinder liner-free structures, and the inner holes are cylinder liner holes.

[0011] Furthermore, both the cylinder body of cylinder I and the cylinder body of cylinder II may be provided with cylinder liner mounting holes.

[0012] Furthermore, at least two I-cylinder water outlet holes are also provided on the I-cylinder cylinder body.

[0013] Furthermore, at least two cylinder II water outlet holes are provided on the cylinder body of the cylinder II.

[0014] Compared with the existing technology, the beneficial effects of the utility model are:

[0015] 1. A cylinder block of an air- and water-cooled two-cylinder engine, which optimizes the cylinder sleeve of the two-cylinder engine, has two independent cylinders, and adopts two cooling methods: air cooling and water cooling. Air and cooling water are used as cooling media to take away the heat of the high-temperature parts of the engine to ensure the normal operating temperature of the engine, making the engine stable and reliable during operation and increasing its service life;

[0016] 2. A cylinder block of an air-water-cooled twin-cylinder engine, where the two cylinders are connected by a dowel pin tube and a sealing ring, so that the coolant can circulate inside the two cylinders, greatly increasing the cooling efficiency;

[0017] 3. A cylinder body of an air-water-cooled twin-cylinder engine. The two cylinders are independent, which reduces the difficulty of machining the cylinder body and thus reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a schematic diagram of the structure of a cylinder block of a twin-cylinder engine, which is an air- and water-cooled twin-cylinder engine.

[0019] Figure 2 The present invention is a schematic diagram of the internal structure of a cylinder block of an air- and water-cooled twin-cylinder engine.

[0020] Figure markings: 1-I cylinder block, 2-Ⅱ cylinder block, 3-I cylinder block outer heat sink, 4-I cylinder water inlet flange, 5-I cylinder water inlet, 6-cylinder liner hole, 7-I cylinder water outlet hole, 8-Ⅱ cylinder water outlet hole, 9-Ⅱ cylinder water outlet, 10-Ⅱ cylinder block heat sink, 11-I cylinder cooling water chamber, 12-positioning pin pipe, 13-Ⅱ cylinder cooling water chamber. DETAILED DESCRIPTION

[0021] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0022] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0023] See also Figure 1-2 A cylinder block of an air-water-cooled two-cylinder engine includes a cylinder block, a heat sink and a cooling water chamber. The cylinder block includes an I-cylinder cylinder block 1 and a II-cylinder cylinder block 2. The I-cylinder cylinder block 1 and the II-cylinder cylinder block 2 are connected by a positioning pin tube 12 and a sealing ring. The I-cylinder cylinder block 1 and the II-cylinder cylinder block 2 are both provided with heat sinks and cooling water chambers. The I-cylinder cylinder block 1 is provided with an I-cylinder water inlet 5, and the II-cylinder cylinder block 2 is provided with a II-cylinder water outlet 9.

[0024] The heat sink comprises a heat sink 3 outside the cylinder body of cylinder I and a heat sink 10 outside the cylinder body of cylinder II. The heat sink 3 outside the cylinder body of cylinder I is arranged on the periphery of the cylinder body 1 of cylinder I, and the heat sink 10 outside the cylinder body of cylinder II is arranged on the periphery of the cylinder body 2 of cylinder II.

[0025] The cooling water chamber includes a cylinder I cooling water chamber 11 and a cylinder II cooling water chamber 13. The cylinder I cooling water chamber 11 is embedded in the cylinder I cylinder body 1, and the cylinder II cooling water chamber 13 is embedded in the cylinder II cylinder body 2. The cylinder I cooling water chamber 11 and the cylinder II cooling water chamber 13 are connected through a positioning pin pipe 12.

[0026] The cylinder I cooling water chamber 11 is connected to the cylinder I water inlet 5 , and the cylinder II cooling water chamber 13 is connected to the cylinder II water outlet 9 .

[0027] The I cylinder water inlet 5 is also connected to the I cylinder water inlet flange 4.

[0028] The cylinder body 1 of cylinder I and the cylinder body 2 of cylinder II are both cylinder liner-free structures, and the inner hole is the cylinder liner hole 6.

[0029] Both the cylinder body 1 of cylinder I and the cylinder body 2 of cylinder II may be provided with cylinder sleeve mounting holes, that is, the cylinder body may be provided with or without cylinder sleeves.

[0030] At least two I-cylinder water outlet holes 7 are also provided on the I-cylinder cylinder body 1.

[0031] At least two cylinder II water outlet holes 8 are also provided on the cylinder II cylinder body 2 .

[0032] In another specific embodiment

[0033] Cylinder block: The cylinder liner is inside, which bears the side thrust of the piston and becomes the guide of the reciprocating motion of the piston. Together with the cylinder head and the piston, it forms the cylinder working space. The lower part of the cylinder liner is connected to the engine body, and the upper part is connected to the engine cylinder head. The heat of the piston assembly and itself is transferred to the cooling water, and the heat is taken away by the cooling water and the heat sink of the body to ensure the normal working temperature of the engine. The cylinder block includes the cylinder block, external heat sink, internal cylinder liner, intermediate cooling water chamber and waterway, positioning pin tube and sealing gasket, etc.

[0034] Cylinder block of a two-cylinder engine: The two cylinders are processed independently and installed through the positioning pin tube 12 and the sealing ring. Under the action of the cooling water pump, the cooling water enters the interior of cylinder I from the water inlet 5 of cylinder I, flows around cylinder I into cylinder II, passes around cylinder II and enters the cylinder head through the water outlet 9 of cylinder II, and finally flows out from the water outlet of the cylinder head, thus forming a coolant circulation system.

[0035] Introduction to the structure and principle of the cylinder block components of a two-cylinder engine;

[0036] like Figure 1 and Figure 2 As shown, the cylinder block of a two-cylinder engine is composed of a cylinder block 1 of cylinder I and a cylinder block 2 of cylinder II. The cylinder block 1 of cylinder I and the cylinder block 2 of cylinder II are connected by a positioning pin tube 12 and a sealing ring. The two cylinders are processed independently to reduce the processing difficulty. There is an adjustment gap during installation, which makes the assembly efficiency higher. The interior of the positioning pin tube 12 is a through hole for connecting the cooling water chamber 11 of cylinder I and the cooling water chamber 13 of cylinder II. Sealing rings are provided at both ends of the positioning pin tube 12 for cooling water sealing.

[0037] There are heat sinks on the outside of cylinder block 1 of cylinder I and cylinder block 2 of cylinder II, and air is used as the cooling medium. The high-speed flowing air directly takes away part of the heat of the high-temperature parts to reduce the temperature of the engine.

[0038] Both the cylinder body 1 of cylinder I and the cylinder body 2 of cylinder II are provided with bolt mounting holes for fixing the cylinder bodies.

[0039] A water inlet is arranged on the lower left side of the cylinder body of cylinder Ⅰ, and the water inlet adopts a flange thread method, which is convenient for installation and has better sealing performance. A cooling water chamber is arranged inside cylinder Ⅰ, and the cooling water flows around the inner cylinder liner. Two water outlets are arranged on the right side of cylinder Ⅰ, and both water outlets are connected to cylinder Ⅱ through positioning pin tube 12 and sealing ring. A cooling water chamber is also arranged inside cylinder Ⅱ, and the cooling water flows around the inner cylinder liner. A water outlet is arranged at the upper right corner of cylinder Ⅱ, and the cooling water enters the cylinder head through the water outlet.

[0040] There are two small water outlet holes on the upper right part of cylinder I. Part of the cooling water goes directly into the cylinder head after passing through cylinder I. There are also two small water outlet holes on the upper left part of cylinder II. Part of the cooling water goes directly into the cylinder head after passing through cylinder I and entering the left side of cylinder II. The cylinder head is appropriately supplemented with cooling water with relatively low temperature through the small water outlet holes to avoid the cooling water temperature entering the cylinder head being always high and affecting the performance of the engine.

[0041] How it works

[0042] Air cooling method: There are heat sinks on the outside of cylinder block I and cylinder block II, and a wind shield is provided outside the heat sink. The wind force generated by the engine fan drives the air to flow at high speed. The high-speed flowing air directly takes away the heat of high-temperature parts to reduce the temperature of the engine.

[0043] Water cooling method: The cooling water in the cooling water tank enters the cooling water chamber of cylinder I through the water inlet of cylinder I under the action of the cooling water pump. The cooling water flows into the cooling water chamber of cylinder I from both sides, flows into the cooling water chamber of cylinder II through the positioning pin pipe between cylinder I and cylinder II, flows into the cooling water chamber of cylinder II from both sides, and finally enters the cylinder head from the water outlet of cylinder II. After passing through the cooling water chamber of cylinder I, part of the cooling water directly enters the cylinder head through the two water outlets on the upper right side of cylinder I; after entering the cooling water chamber of cylinder II from the cooling water chamber of cylinder I, part of the cooling water directly enters the cylinder head from the two water outlets on the upper left side of cylinder II.

[0044] The above-mentioned embodiments only express the specific implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the protection scope of the present application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the technical solution concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A cylinder block of an air-water-cooled twin-cylinder engine, comprising a cylinder block, characterized in that: The invention also comprises a heat sink and a cooling water chamber. The cylinder body comprises an I cylinder body (1) and a II cylinder body (2). The I cylinder body (1) and the II cylinder body (2) are connected via a positioning pin tube (12) and a sealing ring. The I cylinder body (1) and the II cylinder body (2) are both provided with a heat sink and a cooling water chamber. The I cylinder body (1) is provided with an I cylinder water inlet (5), and the II cylinder body (2) is provided with a II cylinder water outlet (9).

2. The cylinder block of an air-water-cooled twin-cylinder engine according to claim 1, characterized in that: The heat sink comprises a heat sink (3) outside the cylinder body of cylinder I and a heat sink (10) outside the cylinder body of cylinder II. The heat sink (3) outside the cylinder body of cylinder I is arranged on the periphery of the cylinder body (1) of cylinder I, and the heat sink (10) outside the cylinder body of cylinder II is arranged on the periphery of the cylinder body (2) of cylinder II.

3. The cylinder block of an air-water-cooled twin-cylinder engine according to claim 1, characterized in that: The cooling water chamber comprises a cylinder I cooling water chamber (11) and a cylinder II cooling water chamber (13); the cylinder I cooling water chamber (11) is embedded in the cylinder body (1) of the cylinder I, and the cylinder II cooling water chamber (13) is embedded in the cylinder body (2) of the cylinder II; the cylinder I cooling water chamber (11) and the cylinder II cooling water chamber (13) are connected via a positioning pin pipe (12).

4. The cylinder block of an air-water-cooled twin-cylinder engine according to claim 3, characterized in that: The I cylinder cooling water chamber (11) is connected to the I cylinder water inlet (5), and the II cylinder cooling water chamber (13) is connected to the II cylinder water outlet (9).

5. The cylinder block of an air-water-cooled twin-cylinder engine according to claim 1 or 4, characterized in that: The I cylinder water inlet (5) is also connected to the I cylinder water inlet flange (4).

6. The cylinder block of an air-water-cooled twin-cylinder engine according to claim 1, characterized in that: The cylinder body (1) of cylinder I and the cylinder body (2) of cylinder II are both cylinder liner-free structures, and the inner hole is the cylinder liner hole (6).

7. The cylinder block of an air-water-cooled twin-cylinder engine according to claim 1, characterized in that: The cylinder body (1) of cylinder I and the cylinder body (2) of cylinder II may be provided with cylinder sleeve mounting holes.

8. The cylinder block of an air-water-cooled twin-cylinder engine according to claim 1, characterized in that: The I-cylinder cylinder body (1) is also provided with at least two I-cylinder water outlet holes (7).

9. The cylinder block of an air-water-cooled twin-cylinder engine according to claim 1, characterized in that: The cylinder body (2) of the cylinder II is also provided with at least two cylinder II water outlet holes (8).

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