Improved cylinder head
By employing a dual cam intake and exhaust assembly in a small engine and optimizing valve control, the problem of poor intake and exhaust performance under different operating conditions caused by a single cam structure is solved, thereby improving the engine's power performance and fuel economy.
Patent Information
- Application Number
- CN202520383254.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-03-06
AI Technical Summary
The single camshaft structure of traditional small engines makes it difficult to achieve optimal intake and exhaust performance under different operating conditions, resulting in problems such as insufficient intake, poor exhaust, insufficient power output, and fuel waste.
It adopts a dual-cam intake and exhaust assembly, including intake cam and exhaust cam. By adjusting the position of the lubrication oil passage and adding a cavity, the valve opening and closing time is optimized, thereby improving the charging efficiency and combustion efficiency.
It achieves precise control of valve opening and closing under different operating conditions, improves engine power performance and fuel economy, and solves space layout problems.
Smart Images
Figure CN223689820U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to engine cylinder head technical field especially relates to an improved cylinder head. BACKGROUND
[0002] Small engine is widely used in motorcycle, tricycle, small generator set, small agricultural machinery and other fields, along with the market performance requirement of these equipment unceasingly improves, also put forward higher request to small engine power output, fuel economy, reliability and so on.
[0003] Traditional small engine adopts single cam structure, this structure is difficult to reach the best intake and exhaust effect under different working conditions when controlling valve opening and closing.
[0004] In order to make small engine more enough reach the best intake and exhaust effect, we propose an improved cylinder head of double cam structure. UTILITY MODEL CONTENTS
[0005] The utility model discloses a kind of improved cylinder head, solve the problem that single cam structure is difficult to reach the best intake and exhaust effect under different working conditions when controlling valve opening and closing.
[0006] To achieve the above object, an improved cylinder head is used, which includes a main body and a double-cam intake and exhaust assembly. The double-cam intake and exhaust assembly includes an intake cam, an exhaust cam, and a mounting hole. The intake cam is fixedly connected to the main body and located above one side of the main body. The exhaust cam is fixedly connected to the main body and located above one side of the main body. The exhaust cam is arranged on one side of the intake cam. The intake cam is also arranged horizontally with the exhaust cam. The mounting hole is fixedly connected to the main body and located in the internal center of the main body. The mounting hole is vertically arranged with the intake cam and the exhaust cam, respectively.
[0007] The double-cam intake and exhaust assembly further includes a lubricating oil passage. The lubricating oil passage is fixedly connected to the main body and located on one side of the internal center of the main body. The lubricating oil passage is arranged on one side of the mounting hole. The lubricating oil passage is also arranged below the intake cam and the exhaust cam. The lubricating oil passage is vertically arranged with the mounting hole.
[0008] The double-cam intake and exhaust assembly further includes a cavity and a mounting groove. The cavity is fixedly connected to the main body and located in the internal center of the main body. The cavity is arranged on one side of the mounting hole. The cavity is also arranged between the intake cam and the exhaust cam. The mounting groove is fixedly connected to the main body and located on one side of the external surface of the main body close to the lubricating oil passage. The mounting groove is also arranged below the lubricating oil passage.
[0009] The double-camshaft intake and exhaust assembly further comprises a parallel double channel and a flat base, the parallel double channel is fixedly connected with the main body and located below the inside of the main body, and the parallel double channel is arranged below the cavity and below the one side of the installation groove, and the flat base is fixedly connected with the main body and located below the main body and arranged below the parallel double channel.
[0010] The double-camshaft intake and exhaust assembly further comprises a heat dissipation fin, the heat dissipation fin is fixedly connected with the main body and located on the outer surface of the main body, and the heat dissipation fin is arranged vertically with the main body.
[0011] The improved cylinder head of the utility model, comprising a main body and a double-camshaft intake and exhaust assembly, the double-camshaft intake and exhaust assembly comprises an air intake cam, an exhaust cam and a mounting hole, the air intake cam is fixedly connected with the main body and located on the upper side of the main body, the exhaust cam is fixedly connected with the main body and located on the upper side of the main body, and the exhaust cam is arranged on the side of the air intake cam, and the air intake cam is horizontally arranged with the exhaust cam, and the mounting hole is fixedly connected with the main body and located in the inside center of the main body, and the mounting hole is vertically arranged with the air intake cam and the exhaust cam respectively, since the original single-cam structure is modified and replaced by the double-camshaft intake and exhaust assembly, the problem that the single-cam structure is difficult to achieve the best intake and exhaust effect under different working conditions when controlling the opening and closing of the valve is actively and effectively solved while the original beneficial effect is retained. BRIEF DESCRIPTION OF DRAWINGS
[0012] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.
[0013] Fig. 1 It is the overall structure diagram of the utility model.
[0014] Fig. 2 It is the overall top view of the utility model.
[0015] Fig. 3 It is the overall bottom view of the utility model.
[0016] 101 - main body, 102 - intake cam, 103 - exhaust cam, 104 - mounting hole, 105 - cavity, 106 - mounting groove, 107 - lubricating oil channel, 108 - parallel double channel, 109 - flat base, 110 - heat dissipation fin. DETAILED DESCRIPTION
[0017] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.
[0018] Please refer to Figs. 1-3 , Fig. 1 is a structural schematic view of the whole of the present application, Fig. 2 is a top view of the whole of the present application, Fig. 3 is a bottom view of the whole of the present application.
[0019] The present application provides an improved cylinder head, comprising a main body 101 and a double cam intake and exhaust assembly, the double cam intake and exhaust assembly comprising an intake cam 102, an exhaust cam 103, a mounting hole 104, a lubricating oil channel 107, a cavity 105, a mounting groove 106, a parallel double channel 108, a flat base 109 and a heat dissipation fin 110, the foregoing scheme solves the problem that a single cam structure is difficult to achieve the best intake and exhaust effect under different working conditions when controlling the opening and closing of the valve, it can be understood that the foregoing scheme compared with the intake and exhaust effect of the traditional single cam structure, the single cam may not be able to provide sufficient valve lift and opening time at high speed, resulting in insufficient intake and poor exhaust, affecting the power output of the engine; at low speed, there may be the case of early or late valve opening, causing fuel waste and insufficient torque output, while the double cam structure can control the intake cam 102 for controlling the intake and the exhaust cam 103 for controlling the exhaust, so that the opening and closing time and lift of the valve can be more accurately adjusted according to the engine speed and load and other working conditions, thereby improving the charging efficiency and combustion efficiency of the engine, and improving the power performance and fuel economy, and by adjusting the position of the lubricating oil channel 107 and adding the cavity 105, the excess space is utilized, thereby effectively solving the problem of space layout required by the application of double cam technology to small engines, thereby retaining the original beneficial effects while actively and effectively solving the problem that the single cam structure is difficult to achieve the best intake and exhaust effect under different working conditions when controlling the opening and closing of the valve.
[0020] For this specific embodiment, the intake cam 102 is fixedly connected to the main body 101 and located on the upper side of the main body 101, the exhaust cam 103 is fixedly connected to the main body 101 and located on the upper side of the main body 101, and the exhaust cam 103 is arranged on the side of the intake cam 102, the intake cam 102 is also arranged horizontally with the exhaust cam 103, the mounting hole 104 is fixedly connected to the main body 101 and located in the center of the main body 101, and the mounting hole 104 is arranged vertically with the intake cam 102 and the exhaust cam 103 respectively. Compared with the traditional single cam structure, the single cam may not be able to provide sufficient valve lift and opening time at high speed, resulting in insufficient intake and poor exhaust, affecting the power output of the engine; at low speed, there may be the situation of early or late valve opening, causing fuel waste and insufficient torque output, while the double cam structure can control the intake cam 102 for intake and control the exhaust cam 103 for exhaust, so that the opening and closing time and lift of the valve can be more accurately adjusted according to the engine speed and load and other working conditions, thereby improving the charging efficiency and combustion efficiency of the engine, and improving the power performance and fuel economy.
[0021] Among them, the lubricating oil channel 107 is fixedly connected to the main body 101 and located on the inside of the main body 101, and the lubricating oil channel 107 is arranged on the side of the mounting hole 104, the lubricating oil channel 107 is also arranged below the intake cam 102 and the exhaust cam 103, and the lubricating oil channel 107 is arranged vertically with the mounting hole 104. By adjusting the position of the lubricating oil channel 107 and adding the cavity 105, the excess space is utilized, thereby effectively solving the problem of space layout required by the application of double cam technology to small engines.
[0022] Secondly, the cavity 105 is fixedly connected to the main body 101 and located in the center of the main body 101, and the cavity 105 is arranged on the side of the mounting hole 104, the cavity 105 is also arranged between the intake cam 102 and the exhaust cam 103, the mounting groove 106 is fixedly connected to the main body 101 and located on the outer surface of the main body 101 close to the lubricating oil channel 107, and the mounting groove 106 is arranged below the lubricating oil channel 107. The mounting groove 106 is convenient for auxiliary structural components on the whole hidden pipeline engine.
[0023] Meanwhile, the parallel double channel 108 is fixedly connected with the main body 101 and located below the inside of the main body 101, and the parallel double channel 108 is arranged below the cavity 105 and below the one side of the installation groove 106, and the flat base 109 is fixedly connected with the main body 101 and located below the main body 101, and the flat base 109 is arranged below the parallel double channel 108.
[0024] In addition, the heat dissipation fin 110 is fixedly connected with the main body 101 and located on the outer surface of the main body 101, and the heat dissipation fin is arranged vertically with the main body 101, and the heat dissipation fin 110 is a functional component for assisting heat dissipation.
[0025] In use of the utility model, compared with the traditional single cam structure, the single cam may not provide sufficient valve lift and opening time at high speed, resulting in insufficient intake and poor exhaust, affecting the power output of the engine; at low speed, there may be early or late valve opening, causing fuel waste and insufficient torque output, while the double cam structure can control the intake cam 102 for intake and the exhaust cam 103 for exhaust, so that the opening and closing time and lift of the valve can be more accurately adjusted according to the engine speed and load and other working conditions, thereby improving the charging efficiency and combustion efficiency of the engine, improving the power performance and fuel economy, and by adjusting the position of the lubricating oil channel 107 and adding the cavity 105, the excess space is utilized, thereby effectively solving the problem of space layout of the double cam technology applied to small engines, thereby retaining the original beneficial effects while actively and effectively solving the problem that the single cam structure is difficult to achieve the best intake and exhaust effect under different working conditions when controlling the valve opening and closing.
[0026] The above disclosed is only a preferred embodiment of the utility model, of course, cannot limit the scope of the utility model, and the person skilled in the art can understand that all or part of the above-mentioned embodiments are implemented, and equivalent changes made according to the utility model claims still belong to the scope covered by the utility model.
Claims
1. An improved cylinder head comprising a main body, characterized in that, It also includes a double cam intake and exhaust assembly, the double cam intake and exhaust assembly includes an intake cam, an exhaust cam and a mounting hole, the intake cam is fixedly connected with the main body and is located on the upper side of the main body, the exhaust cam is fixedly connected with the main body and is located on the upper side of the main body, and the exhaust cam is arranged on one side of the intake cam, the intake cam is also arranged horizontally with the exhaust cam, the mounting hole is fixedly connected with the main body and is located in the center of the inside of the main body, and the mounting hole is arranged vertically with the intake cam and the exhaust cam respectively.
2. The improved cylinder head of claim 1, characterized in that, The double cam intake and exhaust assembly also includes a lubricating oil channel, the lubricating oil channel is fixedly connected with the main body and is located on the inside of the main body, and the lubricating oil channel is arranged on one side of the mounting hole, the lubricating oil channel is also arranged below the intake cam and the exhaust cam, and the lubricating oil channel is arranged vertically with the mounting hole.
3. The improved cylinder head of claim 2, characterized in that, The double cam intake and exhaust assembly also includes a cavity and a mounting groove, the cavity is fixedly connected with the main body and is located in the center of the inside of the main body, and the cavity is arranged on one side of the mounting hole, the cavity is also arranged between the intake cam and the exhaust cam, the mounting groove is fixedly connected with the main body and is located on the outer surface of the main body close to the lubricating oil channel, and the mounting groove is also arranged below the lubricating oil channel.
4. The improved cylinder head of claim 3, characterized in that, The double cam intake and exhaust assembly also includes a parallel double channel and a flat base, the parallel double channel is fixedly connected with the main body and is located below the inside of the main body, and the parallel double channel is arranged below the cavity, the parallel double channel is also arranged on one side below the mounting groove, the flat base is fixedly connected with the main body and is located below the main body, and the flat base is arranged below the parallel double channel.
5. The improved cylinder head of claim 4, characterized in that, The double cam intake and exhaust assembly also includes a heat dissipation fin, the heat dissipation fin is fixedly connected with the main body and is located on the outer surface of the main body, and the heat dissipation fin is arranged vertically with the main body.