Double-cylinder engine

Abstract

The double-cylinder engine comprises an oil pump, a crankcase, an oil radiator and an oil filter, an oil inlet nozzle, an oil outlet nozzle and an oil return nozzle are arranged on a mounting seat, the oil inlet nozzle is communicated with the oil pump, a first cavity and a second cavity are arranged on the mounting seat, the first cavity is communicated with the oil return nozzle and the oil filter, and the second cavity is communicated with the oil filter. And the oil outlet nozzle and the oil return nozzle are respectively communicated with the engine oil radiator. Engine oil firstly passes through the radiator and then returns to the engine oil filter to be filtered, the engine oil filtering effect can be guaranteed, and the structure is simple.

Description

Technical Field

[0001] The utility model relates to an engine, in particular to a double-cylinder engine. Background Art

[0002] A twin-cylinder engine is an engine with two cylinders. It is composed of two identical single cylinders arranged on a body and sharing a crankshaft to output power. As an important medium for lubrication and cooling of the engine, engine oil can reduce friction between metals and maintain the normal operating temperature of the engine. In other words, each component in the engine is lubricated by engine oil to achieve normal operation. However, during the operation of the engine, metal chips, dust, carbon deposits oxidized at high temperatures, colloidal sediments, water, etc. are constantly mixed into the engine oil. Over time, the service life of the engine oil will be reduced, and in severe cases, it may affect the normal operation of the engine. Therefore, an oil filter is also installed on the engine to remove impurities such as dust, metal particles, carbon deposits, and soot particles in the engine oil to protect the engine.

[0003] Chinese patent document CN203892003U discloses an oil cooling system for a small gasoline engine with forced air cooling, which includes an oil pump, an oil filter, an oil radiator and an oil pipeline, and is characterized in that: the oil radiator is installed in the cooling system of the small gasoline engine with forced air cooling. (1) The cooling system of the small gasoline engine with forced air cooling can perform forced heat exchange on the oil radiator, providing it with a high-speed and continuous cooling air environment; (2) The oil radiator of the small gasoline engine with forced air cooling is directly installed on the rear air guide plate and fixed by the support frame in the air guide cover, which is simple and reliable to install and not easy to damage; (3) The slotted rear air guide plate of the small gasoline engine with forced air cooling can strengthen the cooling of the box, reduce the thermal intensity of the engine and thus increase the life of the engine. In this prior art, the oil pump pressurizes the oil to the surface of each moving part of the gasoline engine after filtering by the oil filter and cooling by the oil radiator, forming a lubricating oil film for lubrication. That is, in the prior art, the engine oil first passes through the filter and then is cooled. When passing through the radiator, impurities on the radiator may be reintroduced, thereby reducing the filtering effect of the engine oil. Utility Model Content

[0004] In order to solve the problem that the oil filtering effect of the engine in the prior art needs to be improved, the utility model provides a two-cylinder engine, including an oil pump, a crankcase, an oil radiator and an oil filter, wherein an oil inlet nozzle, an oil outlet nozzle and an oil return nozzle are provided on a mounting seat, the oil inlet nozzle is connected with the oil pump, a chamber one and a chamber two are provided on the mounting seat, the chamber one is connected with the oil return nozzle and the oil filter, the chamber two is connected with the oil filter, and the oil outlet nozzle and the oil return nozzle are respectively connected with the oil radiator.

[0005] Compared with the prior art, in this solution, the engine oil first passes through the radiator and then returns to the oil filter for filtration, which can ensure the filtering effect of the engine oil and has a simple structure.

[0006] Preferably, the oil outlet nozzle and the oil return nozzle are arranged toward the oil radiator. This solution simplifies the arrangement of the pipelines between the oil outlet nozzle and the oil return nozzle and the oil radiator, can shorten the length of the pipelines, and save costs.

[0007] Preferably, two concentric circular baffles of different diameters are provided on the mounting seat, and chamber 1 is formed between the two circular baffles, and the circular baffle with a smaller diameter forms chamber 2. This solution utilizes the cooperation of two circular baffles to form chamber 1 and chamber 2, and has a simple structure.

[0008] Preferably, the axial direction of the oil filter is arranged perpendicularly to the axial direction of the crankshaft that the crankcase rotatably supports. In this solution, after the axial direction of the oil filter is arranged perpendicularly to the axial direction of the crankshaft that the crankcase rotatably supports, it is more convenient to maintain the filter compared with the inclined arrangement.

[0009] Preferably, the oil outlet nozzle is located below the oil return nozzle. This solution can ensure that the oil entering the mounting seat can enter the oil radiator through the oil outlet nozzle for heat dissipation, thereby ensuring the heat dissipation effect of the oil.

[0010] Preferably, an oil testing bolt is provided at the bottom of the mounting seat, and an angle is provided between the axial direction of the oil return nozzle and the axial direction of the oil testing bolt. This solution facilitates the casting of the oil return nozzle.

[0011] Preferably, the angle is between 45° and 60°.

[0012] The utility model has the following beneficial effects:

[0013] 1. In the utility model, the engine oil first passes through the radiator and then returns to the oil filter for filtration, which can ensure the filtering effect of the engine oil and has a simple structure.

[0014] 2. The utility model separates the oil filter from the output end face of the crankshaft, thus avoiding the interference of the crankshaft with the oil filter to the greatest extent, thereby facilitating the maintenance of the oil filter. Moreover, after the twin-cylinder engine is installed on the terminal product, the filter can also be separated from the terminal installation surface, which is also convenient for the maintenance of the filter when the terminal product is maintained.

[0015] 3. The setting of the included angle in the utility model facilitates the casting of the oil return nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of an embodiment of a two-cylinder engine of the utility model;

[0017] Figure 2 for Figure 1 Schematic diagram of the middle mounting seat;

[0018] Figure 3 for Figure 2 Schematic diagram of the oil filter being assembled on the middle mounting seat;

[0019] Figure 4 for Figure 3 The main view of

[0020] Figure 5 for Figure 4 AA section view;

[0021] Figure 6 for Figure 4 Middle BB section view. DETAILED DESCRIPTION

[0022] The following is further described in detail through specific implementation methods:

[0023] 1. Definition

[0024] Oil pump: The function of the oil pump is to increase the oil to a certain pressure and then force it onto the moving surfaces of various engine parts.

[0025] Crankcase: The part at the bottom of the cylinder block used to install the crankshaft is called the crankcase.

[0026] Oil radiator: Oil radiator, also known as oil cooler, is an oil cooling device used in the engine.

[0027] Oil filter: also known as the oil grid, it is used to remove impurities such as dust, metal particles, carbon deposits and soot particles in the oil to protect the engine.

[0028] Axial direction: Usually for cylindrical objects, it is the direction of the central axis of rotation of the cylinder, that is, the same direction as the central axis.

[0029] 2. The reference numerals in the drawings of the specification include: crankcase 1, case cover 2, mounting seat 3, oil filter 4, oil outlet nozzle 5, oil return nozzle 6, oil outlet pipe 7, oil return pipe 8, radiator 9, crankshaft 10, chamber 1 11, chamber 2 12, oil testing bolt 13, angle 14, oil inlet nozzle 15.

[0030] The embodiment is basically as shown in the attached Figure 1-Figure 6 As shown: a two-cylinder engine includes an oil pump, a crankcase 1, an oil radiator 9 and an oil filter 4. The oil filter 4 is mounted on the crankcase 1, and the axial direction of the oil filter 4 is perpendicular to the axial direction of the crankshaft 10 of the crankcase 1. Specifically, a mounting seat 3 is provided on the case cover 2 of the crankcase 1, and the oil filter 4 is assembled on the mounting seat 3, as shown in FIG. Figure 2 and Figure 3The side of the mounting seat facing the crankshaft output end face does not exceed the plane where the crankshaft output end face is located, as shown in Figure 1 As shown, the left side of the mounting seat is the side facing the crankshaft output end face, and the left side of the mounting seat does not exceed the plane where the crankshaft output end face is located. Therefore, after the two-cylinder engine is installed on the terminal product, on the one hand, the two-cylinder engine will not interfere with the components on the terminal product, which facilitates the installation of the two-cylinder engine and the terminal product. On the other hand, since the filter is separated from the installation surface of the terminal, it is also convenient for the maintenance of the filter.

[0031] like Figure 4-Figure 6 As shown, the mounting seat 3 is provided with an oil inlet nozzle 15, an oil outlet nozzle 5 and an oil return nozzle 6, the oil outlet nozzle 5 and the oil return nozzle 6 are arranged toward the oil radiator 9, and the oil outlet nozzle 5 is located below the oil return nozzle 6. The oil inlet nozzle 15 is connected to the oil pump through an oil pipe, the oil outlet nozzle 5 is connected to the oil radiator 9 through an oil outlet pipe 7, and the oil return nozzle 6 is connected to the oil radiator 9 through an oil return pipe 8. The oil enters the mounting seat 3 through the oil pump, enters the oil radiator 9 from the oil outlet nozzle 5, and then returns to the oil filter 4 through the oil return nozzle 6.

[0032] The mounting seat 3 is provided with a chamber 11 and a chamber 2 12. The mounting seat 3 is provided with two concentric circular baffles of different diameters. The chamber 11 is formed between the two circular baffles, and the circular baffle with a smaller diameter forms the chamber 2 12. The chamber 11 is connected to the oil return nozzle 6 and the oil filter 4, and the chamber 2 12 is connected to the oil filter 4. The bottom of the mounting seat 3 is provided with an oil testing bolt 13, and an angle 14 is provided between the axial direction of the oil return nozzle 6 and the axial direction of the oil testing bolt 13. Preferably, the angle 14 is between 45° and 60°, and is 45° in this embodiment.

[0033] The specific implementation process is as follows: during the operation of the two-cylinder engine, the oil pump pumps the oil into the mounting seat 3 through the oil inlet nozzle 15 of the mounting seat 3, and then enters the oil radiator 9 from the oil outlet nozzle 5 for heat dissipation. The oil after heat dissipation enters the chamber 11 of the mounting seat 3 from the oil return nozzle 6, and then enters the oil filter 4 from the chamber 11 for filtration. The filtered oil flows out of the oil filter 4 and enters the chamber 2 12 of the mounting seat 3, and then flows out and flows into the main oil circuit of the two-cylinder engine.

[0034] The above is only an embodiment of the utility model. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, which will not affect the effect of the implementation of the utility model and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to explain the content of the claims.

Claims

1. A two-cylinder engine, comprising an oil pump, a crankcase, an oil radiator and an oil filter, characterized in that: A mounting seat is provided on the crankcase cover, the oil filter is assembled on the mounting seat, an oil inlet nozzle, an oil outlet nozzle and an oil return nozzle are provided on the mounting seat, the oil inlet nozzle is connected with the oil pump, a chamber one and a chamber two are provided on the mounting seat, the chamber one is connected with the oil return nozzle and the oil filter, the chamber two is connected with the oil filter, the oil outlet nozzle and the oil return nozzle are respectively connected with the oil radiator.

2. The two-cylinder engine according to claim 1, characterized in that: The oil outlet nozzle and the oil return nozzle are arranged toward the oil radiator.

3. The two-cylinder engine according to claim 1 or 2, characterized in that: The mounting seat is provided with two concentric circular baffles of different diameters, wherein the first chamber is formed between the two circular baffles, and the second chamber is formed by the circular baffle with a smaller diameter.

4. The twin-cylinder engine according to claim 3, characterized in that: The axial direction of the oil filter is arranged perpendicular to the axial direction of the crankcase rotatably supporting the crankshaft.

5. The two-cylinder engine according to claim 4, characterized in that: The oil outlet nozzle is located below the oil return nozzle.

6. The two-cylinder engine according to claim 5, characterized in that: An oil testing bolt is arranged at the bottom of the mounting seat, and an angle is arranged between the axial direction of the oil return nozzle and the axial direction of the oil testing bolt.

7. The two-cylinder engine according to claim 6, characterized in that: The angle is between 45° and 60°.

Images