Heated engine cylinder head cover

Abstract

The present invention discloses a cylinder head cover of a heated engine, comprising a cover body arranged on the cylinder head of the engine, a heating channel arranged inside the cover wall of the cover body, the heating channel comprising a plurality of longitudinal channels, a connecting portion and a connecting channel; the plurality of longitudinal channels are arranged in parallel with each other in the top wall and the two side walls of the cover body; the connecting portion is arranged in the end walls at both ends of the cover body; the connecting channel is connected between the connecting portion and the plurality of longitudinal channels; wherein the heating medium circulates in the heating channel to heat the cover body. The cylinder head cover of the heated engine of the present invention can effectively prevent the generation of condensed water and engine oil emulsion.

Description

Technical Field

[0001] The invention relates to the field of internal combustion engines, and in particular to a cylinder head cover of a heated engine capable of preventing the generation of condensed water and engine oil emulsions. Background Art

[0002] The cylinder head cover of the engine is located at the top of the engine. Its main function is to prevent foreign matter from entering the engine and to seal it. Inside the cylinder head cover are engine rocker arms, valves, camshafts and other parts that are running at high speeds, which will generate a lot of oil particles and oil mist that will splash onto the cylinder head cover.

[0003] When the engine is burning, some gas will leak out of the combustion chamber and eventually be discharged to the outside of the engine through the oil pan, cylinder head cover, and breather. At present, the new emission regulations require that the crankcase ventilation be connected to the engine intake to avoid the emission of pollutants. The exhaust gas produced by engine combustion contains a small amount of water vapor. If the fuel is natural gas, more water vapor is produced. In cold weather, this water vapor will condense on the top of the cylinder head cover where the temperature is lower. The oil particles and oil mist produced by the engine contact and mix with these condensed water to form oil emulsions. The emulsified oil enters the oil-gas separator, supercharger, intercooler, etc. through the crankcase ventilation system. When there is a lot of emulsified oil, it is very easy to block the crankcase ventilation system, resulting in high crankcase pressure and oil leakage. At the same time, the oil emulsion will also contaminate the supercharger, intercooler, etc., affecting the normal operation of the engine.

[0004] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0005] The object of the present invention is to provide a cylinder head cover of a heated engine, which can prevent the generation of condensed water and engine oil emulsion.

[0006] To achieve the above-mentioned purpose, the present invention provides a cylinder head cover of a heated engine, comprising a cover body arranged on the cylinder head of the engine, a heating channel being arranged inside the cover wall of the cover body, the heating channel comprising a plurality of longitudinal channels, a connecting portion and a connecting channel; the plurality of longitudinal channels are arranged in parallel with each other in the top wall and two side walls of the cover body; the connecting portion is arranged in the end walls at both ends of the cover body; the connecting channel is connected between the connecting portion and the plurality of longitudinal channels; wherein a heating medium circulates in the heating channel to heat the cover body.

[0007] In a preferred embodiment, the cylinder head cover of the heating engine further includes a heating medium inlet and a heating medium outlet; the heating medium inlet is arranged on the end wall at one end of the cover body; the heating medium outlet is arranged on the end wall at the other end of the cover body.

[0008] In a preferred embodiment, the heating medium inlet and the heating medium outlet are respectively communicated with the communicating parts arranged on the end walls at both ends of the cover body.

[0009] In a preferred embodiment, the cylinder head cover of the heating engine further comprises convex ribs, which are arranged on the inner sides of the top wall, the side wall and the end wall of the cover body.

[0010] In a preferred embodiment, the convex ribs are arranged along the course of the longitudinal channels and the connecting channels.

[0011] In a preferred embodiment, the cross-sectional shapes of the longitudinal channels and the connecting channels are circular, elliptical or polygonal.

[0012] In a preferred embodiment, the heating medium is gas or liquid.

[0013] In a preferred embodiment, the cylinder head cover of the heated engine further includes a plurality of transverse channels, which are arranged between the plurality of longitudinal channels.

[0014] In a preferred embodiment, the cylinder head cover of the heating engine further includes a communication protrusion, which is arranged on the inner side of the end wall at both ends of the cover body.

[0015] In a preferred embodiment, the position of the connecting protrusion corresponds to the position of the connecting portion.

[0016] Compared with the prior art, the heated engine cylinder head cover of the present invention has the following beneficial effects: this solution adds a heating channel inside the top wall, side wall and front and rear end walls of the cover body of the engine cylinder head, and heats the cover body of the cylinder head by circulating the heating medium in the heating channel, thereby preventing the generation of condensed water and engine oil emulsions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the installation of a cylinder head cover and an engine according to an embodiment of the present invention;

[0018] Figure 2 is a schematic top view of a cover body according to an embodiment of the present invention;

[0019] Figure 3 is a schematic cross-sectional view of the convex 2 at A-A;

[0020] Figure 4 It is a cross-sectional schematic diagram of the B-B portion of the convex 3;

[0021] Figure 5 is a schematic cross-sectional view of the C-C portion of the convex 3;

[0022] Figure 64 is a schematic cross-sectional view of a convex rib according to an embodiment of the present invention.

[0023] Description of main reference numerals:

[0024] 1-cover body, 101-heating medium inlet, 102-heating medium outlet, 103-heating channel, 1031-connecting part, 1032-longitudinal channel, 1033-connecting channel, 1034-convex rib, 1035-connecting protrusion, 2-engine. DETAILED DESCRIPTION

[0025] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0026] Unless explicitly stated otherwise, throughout the specification and claims, the term “comprise” or variations such as “include” or “comprising”, etc., will be understood to include the stated elements or components but not to exclude other elements or components.

[0027] like Figures 1 to 5 As shown, a cylinder head cover of a heated engine according to a preferred embodiment of the present invention includes a cover body 1 arranged on the cylinder head of the engine 2, and the cover body 1 includes a heating medium inlet 101, a heating medium outlet 102 and a heating channel 103 arranged inside the cover wall of the cover body 1.

[0028] In some embodiments, the heating channel 103 includes a connecting portion 1031, a plurality of longitudinal channels 1032, and a connecting channel 1033. The plurality of longitudinal channels 1032 are arranged in parallel with each other in the top wall and the two side walls of the cover body 1. The connecting portion 1031 is arranged in the end walls at both ends of the cover body 1. The heating medium inlet 101 and the heating medium outlet 102 are respectively connected to the connecting portion 1031 arranged on the end walls at both ends of the cover body 1. The connecting channel 1033 is connected between the connecting portion 1031 and the plurality of longitudinal channels 1032. The heating medium circulates in the heating channel 103 to heat the cover body 1.

[0029] In some embodiments, the cross-sectional shape of the longitudinal channel 1032 and the connecting channel 1033 may be circular, elliptical, polygonal or other shapes, but the present invention is not limited thereto.

[0030] like Figure 6As shown, in some embodiments, the cylinder head cover of the heating engine 2 further includes convex ribs 1034, which are arranged on the inner side of the top wall, side wall and end wall of the cover body 1. The convex ribs 1034 are arranged along the longitudinal channel 1032 and the connecting channel 1033. The main function of the convex ribs 1034 is to reduce the overall wall thickness of the cover body 1, while ensuring the wall thickness at the heating channel 103, and also to strengthen the overall rigidity and strength of the cover body 1.

[0031] In some embodiments, the heating medium is gas or liquid. The liquid heating medium can be drawn from the cooling system of the engine 2 with a coolant having a mobile temperature, and connected to the cooling circulation system of the whole machine. The gaseous heating medium can be drawn from the high-temperature exhaust gas of the exhaust system to heat the cover body 1, and can also be connected to the exhaust system of the whole machine.

[0032] In some embodiments, the cylinder head cover of the heated engine may further include a plurality of transverse channels (not shown) disposed between the plurality of longitudinal channels 1032. The addition of transverse channels may appropriately reduce the number of longitudinal channels 1032, so that the heating of the entire cover body 1 is more uniform. However, the arrangement of the transverse channels should avoid the generation of the shortest loop, which means that the heating medium mostly circulates through the heating channel 103 with the shortest distance, rather than through the heating channel 103 that is farther away.

[0033] In some embodiments, the cylinder head cover of the heating engine 2 further includes a connecting protrusion 1035, which is arranged on the inner side of the end wall at both ends of the cover body 1. The position of the connecting protrusion 1035 corresponds to the position of the connecting portion 1031. The shape of the connecting portion 1031 can be various, and can be circular, semicircular, polygonal, etc. In some embodiments, the connecting portion 1031 can also be made into one piece with the heating medium inlet 101 and the heating medium outlet 102, and then combined with the end wall of the cover body 1 to form the connecting portion 1031.

[0034] In some embodiments, the heating medium inlet 101 and the heating medium outlet 102 can be set at a suitable position of the cover 1 (can be set on the wall or on the cover 1 of the cylinder head and the mounting surface of the cylinder head, so that the coolant of the cooling system of the engine 2 flows through the cover 1 of the cylinder head). The size of the heating medium inlet 101 and the heating medium outlet 102 is set according to the model of the engine 2, the actual temperature of the cover 1 of the cylinder head, the margin of the liquid flow, etc. The heating medium inlet 101 and the heating medium outlet 102 can also be provided with a valve, which determines whether to open or close the valve through the data detected by the ambient temperature sensor and the ECU. When the ambient temperature is low, the valve of the heating medium inlet 101 of the cover 1 is opened, and the liquid of the cooling system of the engine 2 (or the high-temperature exhaust gas of the exhaust system) enters the wall cavity of the cover 1 of the cylinder head from the liquid inlet of the cover 1 of the cylinder head, flows out from the heating medium outlet 102, and flows back to the cooling system. At this time, the cover 1 of the cylinder head will be heated by the liquid. The water vapor generated by the combustion of the engine 2 will not condense when it encounters the hot cylinder head cover 1, but will directly enter the crankcase ventilation system, thus preventing the water vapor from generating condensed water and emulsified engine oil on the inner wall of the cylinder head cover 1. When the ambient temperature is high, the valve is closed and the engine 2 coolant does not pass through the cylinder head cover 1.

[0035] In summary, the heated engine cylinder head cover of the present invention has the following advantages: the present solution adds heating channels inside the top wall, side wall and front and rear end walls of the cover of the engine cylinder head, and heats the cover of the cylinder head by circulating the heating medium in the heating channel, thereby preventing the generation of condensed water and engine oil emulsions. At the same time, the cylinder head cover inlet and outlet can be provided with valves controlled by the ambient temperature sensor and the ECU to realize whether the cylinder head cover is heated or not, and realize automatic heating control.

[0036] The foregoing description of specific exemplary embodiments of the present invention is for the purpose of illustration and demonstration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the present invention and various different selections and changes. The scope of the present invention is intended to be limited by the claims and their equivalents.

Claims

1. A cylinder head cover of a heated engine, characterized in that: The invention comprises a cover body, which is arranged on the cylinder head of the engine, and the cover body comprises: A heating channel is arranged in the cover wall of the cover body, and the heating channel includes: A plurality of longitudinal channels are arranged parallel to each other in the top wall and the two side walls of the cover body; A connecting portion, which is arranged in the end walls at both ends of the cover body; a connecting channel communicating between the connecting portion and the plurality of longitudinal channels; and a plurality of transverse channels disposed between the plurality of longitudinal channels; wherein the heating medium circulates in the heating channel to heat the cover body; A heating medium inlet is arranged on an end wall at one end of the cover body; A heating medium outlet is provided on the end wall at the other end of the cover body; A valve is provided at the heating medium inlet or the heating medium outlet to control the Opening or closing the heating channel; An ambient temperature sensor, which is electrically connected to the ECU of the vehicle, and the ECU can control the opening or closing of the valve through the ambient temperature data detected by the ambient temperature sensor; and The convex ribs are arranged on the inner sides of the top wall, the side wall and the end wall of the cover body, and the convex ribs are arranged along the direction of the longitudinal channel and the connecting channel.

2. The cylinder head cover of a heated engine according to claim 1, characterized in that: The heating medium inlet and the heating medium outlet are respectively communicated with the communication parts arranged on the end walls at both ends of the cover body.

3. The cylinder head cover of a heated engine according to claim 1, characterized in that: The cross-sectional shapes of the longitudinal channel and the connecting channel are circular, elliptical or polygonal.

4. The cylinder head cover of a heated engine according to claim 1, characterized in that: The heating medium is gas or liquid.

5. The cylinder head cover of a heated engine according to claim 1, characterized in that: It also includes a connecting protrusion, which is arranged on the inner side of the end walls at both ends of the cover body.

6. The cylinder head cover of a heated engine according to claim 5, characterized in that: The position of the communication protrusion corresponds to the position of the communication portion.

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