V-shaped double-cylinder engine

Abstract

The V-shaped double-cylinder engine comprises a first air cylinder and a second air cylinder which are arranged in a V shape, a containing cavity used for containing an oil-gas mixing device is formed between the first air cylinder and the second air cylinder, an air inlet manifold is connected between the first air cylinder and the second air cylinder, the air inlet manifold is located outside the containing cavity, and the air inlet manifold is connected with the first air cylinder. An air filter is arranged outside the containing cavity, the upper portion of the air inlet manifold is in static connection with an air inlet bent pipe used for being communicated with and supporting an oil-gas mixing device, and the air inlet end of the air inlet bent pipe faces the containing cavity. According to the scheme, the problem of poor compatibility of a V-shaped double-cylinder engine in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to a V-type twin-cylinder engine. Background Art

[0002] A V-twin engine is an engine with two cylinders that are arranged in a V shape. An oil-gas mixing device is set in the space between the two cylinders, and the oil-gas mixing device inputs the oil-gas mixture into the cylinder through an intake manifold. The intake end of the oil-gas mixing device needs to be connected to the air filter, which is generally set on the top of the engine.

[0003] Chinese patent document CN209083441U discloses a universal gasoline engine intake system, which discloses a V-type twin-cylinder engine, including: an engine body with a cylinder head A and a cylinder head B, a carburetor is arranged between the cylinder head A and the cylinder head B, and an air guide cover is arranged on one side of the engine body, wherein: a cylindrical air filter is horizontally arranged above the air guide cover, the air filter is connected to the carburetor intake end through an intake hose and an intake pipe, and the carburetor outlet end is respectively connected to the cylinder head A and the cylinder head B through an intake manifold located between the cylinder head A and the cylinder head B and close to the air filter; the horizontal cross-section of the intake manifold is ω-shaped; a mounting support is arranged on the upper end surface of the air guide cover; the air filter is connected to the mounting support through a ring-shaped fixing support; two mounting points A are also arranged on the ring-shaped fixing support, and the mounting points A are correspondingly connected to the two mounting points B arranged on the intake manifold. This solution achieves a compact design of the engine structure and can improve the ventilation efficiency of the air filter entering the gasoline engine, thereby improving the performance of the engine.

[0004] In order to meet the engine's compatibility with different oil-gas mixing devices, such as carburetor type and electric fuel injection pump type, carburetor type and electric fuel injection pump type oil-gas mixing devices can be subdivided into single-chamber type and double-chamber type. As a result, there are many different designs for the specific structure of the oil-gas mixing device, and the size of the installation space they require is also different. Therefore, according to the different oil-gas mixing devices, the engine's intake manifold and air filter and other parts need to be redesigned and arranged, resulting in the manufacturer needing to develop a variety of different molds. Utility Model Content

[0005] The utility model aims to provide a V-type twin-cylinder engine to solve the problem of poor compatibility of the V-type twin-cylinder engine in the prior art.

[0006] In order to achieve the above-mentioned purpose, the basic scheme of the utility model provides a V-type twin-cylinder engine, including a first cylinder and a second cylinder arranged in a V shape, a accommodating chamber for accommodating an oil-gas mixing device is provided between the first cylinder and the second cylinder, an intake manifold is connected between the first cylinder and the second cylinder, the intake manifold is located outside the accommodating chamber, an air filter is arranged outside the accommodating chamber, an upper part of the intake manifold is statically connected to an intake elbow for connecting and supporting the oil-gas mixing device, and the intake end of the intake elbow is arranged toward the accommodating chamber.

[0007] Preferably, the opening of one end of the intake manifold connected to the intake elbow is arranged to face upward.

[0008] Preferably, a fuel direct injection interface is provided on the intake manifold.

[0009] Preferably, the air filter is connected and supported on the intake manifold.

[0010] The utility model has the following beneficial effects:

[0011] 1. The air filter is arranged outside the accommodating cavity, so that the accommodating cavity has enough space for arranging various oil-gas mixing devices, and the oil-gas mixing device is supported by the intake elbow and the intake manifold, and there is no need to set up a separate supporting structure for the oil-gas mixing device. Therefore, by selecting different oil-gas mixing devices to be installed in the accommodating cavity, and using corresponding intake elbows to connect and support them on the intake manifold, V-type twin-cylinder engines with different types of mixing devices can be obtained, thereby greatly improving the compatibility of the V-type twin-cylinder engine.

[0012] 2. The opening at one end of the intake manifold connected to the intake elbow is arranged upward, so that the assembly operation between the intake elbow and the intake manifold is more convenient, which is conducive to reducing the difficulty of assembly.

[0013] 3. The setting of the fuel direct injection interface enables the intake manifold to adapt to the needs of fuel direct injection, thus eliminating the need to replace the intake manifold, which is beneficial to further improve the compatibility of the engine.

[0014] 4. By setting the intake elbow, after the oil-gas mixing device is supported by the intake elbow, a certain gap is left between the bottom of the oil-gas mixing device and the bottom of the accommodating cavity, so as to facilitate the cooling air to flow through and cool down. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of an embodiment of a V-type twin-cylinder engine of the utility model;

[0016] Figure 2 for Figure 1 Cross-sectional view with intake elbow and oil-air mixing device installed. DETAILED DESCRIPTION

[0017] The following is further described in detail through specific implementation methods:

[0018] The reference numerals in the drawings of the specification include: a first cylinder 1, a second cylinder 2, an intake manifold 3, a accommodating chamber 4, an intake elbow 5, an oil-gas mixing device 6, and a crankcase 7.

[0019] The embodiment is basically as shown in the attached Figure 1 and Figure 2 As shown: A V-type twin-cylinder engine includes a first cylinder 1 and a second cylinder 2 arranged in a V shape at the top of a crankcase 7, and a receiving chamber 4 for receiving an oil-gas mixing device 6 is provided between the first cylinder 1 and the second cylinder 2; an intake manifold 3 is connected between the first cylinder 1 and the second cylinder 2, and the intake manifold 3 is located outside the receiving chamber 4; an intake elbow 5 for connecting and supporting the oil-gas mixing device 6 is statically connected to the upper part of the intake manifold 3, and the intake end of the intake elbow 5 is arranged toward the receiving chamber 4. In this embodiment, the opening of one end of the intake manifold 3 connected to the intake elbow 5 is arranged upward, so as to facilitate the assembly operation between the intake elbow 5 and the intake manifold 3. In this embodiment, a fuel direct injection interface is provided on the intake manifold 3. An air filter is provided outside the receiving chamber 4, and in this embodiment, the air filter is preferably a cylindrical air filter and is arranged roughly parallel to the intake manifold 3.

[0020] The air filter is arranged outside the accommodating cavity 4, so that the accommodating cavity 4 has enough space for arranging various oil-gas mixing devices 6, and the oil-gas mixing device 6 is supported by the intake elbow 5 and the intake manifold 3, and there is no need to set up a separate supporting structure for the oil-gas mixing device 6. Therefore, by selecting different oil-gas mixing devices 6 to be installed in the accommodating cavity 4, and using corresponding intake elbows 5 to connect and support them on the intake manifold 3, V-type twin-cylinder engines with different types of oil-gas mixing devices can be obtained, thereby greatly improving the compatibility of the V-type twin-cylinder engine.

[0021] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A V-type twin-cylinder engine, comprising a first cylinder and a second cylinder arranged in a V shape, a receiving chamber for receiving an oil-gas mixing device is provided between the first cylinder and the second cylinder, an intake manifold is connected between the first cylinder and the second cylinder, the intake manifold is located outside the receiving chamber, an air filter is provided outside the receiving chamber, and is characterized in that: The upper part of the intake manifold is statically connected with an intake elbow pipe for communicating with and supporting the oil-gas mixing device, and the intake end of the intake elbow pipe is arranged toward the accommodating cavity.

2. A V-twin engine according to claim 1, characterized in that: The opening of one end of the intake manifold connected to the intake elbow is arranged to face upward.

3. A V-twin engine according to claim 2, characterized in that: The intake manifold is provided with a fuel direct injection interface.

4. A V-twin engine according to claim 3, characterized in that: The air filter is connected and supported on the intake manifold.

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