Engine cylinder cover structure

Abstract

The utility model discloses an engine cylinder cover structure which comprises a cylinder cover, a combustion chamber corresponding to the cylinder cover is provided with two air inlet seat ring holes which are respectively a first air inlet seat ring hole and a second air inlet seat ring hole, regular chamfers are arranged on the air inlet seat ring holes, an eccentric chamfer is arranged on the outer side of the chamfer of each air inlet seat ring hole, and the first air inlet seat ring hole and the second air inlet seat ring hole are communicated with each other. The utility model solves the problems that the air flow is not optimal during the air intake of the existing engine, the performance of the cylinder cover air passage is influenced, serious carbon deposition occurs after a long time, the combustion of the engine is influenced, and the service life of the engine is shortened.

Description

Technical Field

[0001] The utility model relates to the field of engines, in particular to an engine cylinder cover structure. Background Art

[0002] The combustion chamber of the engine cylinder head is provided with chamfers on the circumference of the intake and exhaust valve seat holes to guide the airflow, so that the engine intake and exhaust are smoother and the combustion efficiency is improved. In the prior art, the chamfer of the intake valve seat is a regular conical surface. The function of the intake valve is to guide the airflow entering the combustion chamber. The intake valve seat ring of the existing structure has a relatively small vortex. When the engine is inhaling, the airflow is not optimal, which will affect the performance of the cylinder head airway. Over time, serious carbon deposits will appear, affecting the combustion of the engine and reducing the life of the engine.

[0003] The disclosure of the above background technology content is only used to assist in understanding the utility model concept and technical solution of the utility model. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above content has been disclosed on the filing date of this patent application, the above background technology should not be used to evaluate the novelty and creativity of the present application. Utility Model Content

[0004] The utility model aims to provide an engine cylinder head structure, which solves the problem that when the existing engine is inhaled, the airflow is not optimal, which will affect the performance of the cylinder head airway. Over time, serious carbon deposits will occur, affecting the combustion of the engine and reducing the life of the engine.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] An engine cylinder head structure, characterized in that it includes a cylinder head, wherein the combustion chambers corresponding to the cylinder head are each provided with two intake seat ring holes, namely a first intake seat ring hole and a second intake seat ring hole, wherein the intake seat ring holes are provided with regular chamfers, and an eccentric chamfer is provided on the outer side of the chamfer of each intake seat ring hole.

[0007] Furthermore, an eccentric chamfer is provided at an upper right portion of the chamfer of the first air intake seat ring hole.

[0008] Furthermore, an eccentric chamfer is provided at an upper left portion of the chamfer of the second air intake seat ring hole.

[0009] Furthermore, the cylinder head is matched with a four-cylinder, six-cylinder, eight-cylinder or twelve-cylinder engine.

[0010] Furthermore, the eccentric distance of the eccentric chamfer is 5 mm.

[0011] Furthermore, the depth of the eccentric chamfer is 2 mm.

[0012] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0013] The utility model can increase the swirl ratio to 1.6-1.7 by arranging an eccentric chamfer of special angle and size on the intake seat ring hole, thereby solving the problem that when the existing engine is inhaled, the airflow flow is not optimal, which will affect the performance of the cylinder head airway, and serious carbon deposits will occur over time, affecting the combustion of the engine and reducing the life of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below in conjunction with specific implementations. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope and application of the present invention.

[0016] like Figure 1 As shown, an engine cylinder head structure is characterized in that it includes a cylinder head 1, and the cylinder head is matched with a four-cylinder, six-cylinder, eight-cylinder or twelve-cylinder engine, and can be matched with engines with different numbers of cylinders. The combustion chambers corresponding to the cylinder head are each provided with two intake seat ring holes, namely a first intake seat ring hole 2 and a second intake seat ring hole 3. The intake seat ring holes are provided with regular chamfers 5, and an eccentric chamfer 4 is provided on the outer side of the chamfer 5 of each intake seat ring hole. The chamfer 5 of the first intake seat ring hole 2 is provided with an eccentric chamfer 4 at the upper right part, and the chamfer 5 of the second intake seat ring hole 3 is provided with an eccentric chamfer 4 at the upper left part. The eccentric distance of the eccentric chamfer 4 is 5 mm, and the depth of the eccentric chamfer 4 is 2 mm. By designing the eccentric chamfer 4 in the first intake seat ring hole 2 and the second intake seat ring hole 3, the swirl ratio can be increased to between 1.6 and 1.7, so that the airflow flows in an optimal state during intake, which can effectively improve the combustion efficiency of the engine, reduce engine carbon deposition, and increase the service life of the engine.

[0017] By testing the eccentric chamfer data of the scheme, the following results were obtained:

[0018]

[0019]

[0020] Through comparison, it is concluded that Option 2 is the best option, which can increase the swirl ratio to 1.6-1.7.

[0021] The above contents are further detailed descriptions of the present invention in combination with specific / preferred implementations, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, they can also make several substitutions or modifications to the described embodiments without departing from the concept of the present invention, and these substitutions or modifications should be deemed to belong to the protection scope of the present invention.

Claims

1. An engine cylinder head structure, characterized in that: It includes a cylinder head, and the combustion chamber corresponding to the cylinder head is provided with two intake seat ring holes, which are a first intake seat ring hole and a second intake seat ring hole respectively. The intake seat ring holes are provided with regular chamfers, and the outer side of the chamfer of each intake seat ring hole is provided with an eccentric chamfer; the upper right part of the chamfer of the first intake seat ring hole is provided with an eccentric chamfer; the upper left part of the chamfer of the second intake seat ring hole is provided with an eccentric chamfer; the eccentric distance of the eccentric chamfer is 5mm; the depth of the eccentric chamfer is 2mm.

2. The engine cylinder head structure according to claim 1, characterized in that: The cylinder head is matched with a four-cylinder, six-cylinder, eight-cylinder or twelve-cylinder engine.

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