Engine and vehicle

Abstract

The utility model discloses an engine and a vehicle, the engine comprises a cylinder, a supercharger and an air outlet pipeline, two ends of the air outlet pipeline are respectively connected with the cylinder and the supercharger; the one-way valve set is installed at the connecting position of the air outlet pipeline and the supercharger, and the one-way valve set is arranged to be in one-way communication from the air outlet pipeline to the interior of the supercharger. According to the engine, the one-way valve set is arranged at the connecting position of the gas outlet pipeline and the supercharger, blow-by gas can be introduced into the supercharger to achieve secondary combustion, the heat efficiency of the engine is improved, waste gas and condensate water in the supercharger can be prevented from entering the gas outlet pipeline and the crankcase, the risk of engine oil emulsification of the engine is eradicated, and the service life of the engine is prolonged. Therefore, the overall reliability of the engine is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of engine ventilation systems, in particular to an engine and a vehicle with the engine. Background Art

[0002] As emission regulations and ecological environment requirements become increasingly stringent, low fuel consumption and low emission engines have become the current research direction in the industry. The use of EGR (Exhaust Gas Recirculation) can effectively reduce emissions, and in the common operating conditions, the engine driving pressure difference is small, and there will be a higher EGR rate demand, so the use of EGR technology has become a conventional technical means for current engines.

[0003] For engines with integrated EGR assemblies, EGR exhaust gas and condensed water may pass through the supercharger compression casing and the crankcase ventilation pipe assembly into the engine, causing oil emulsification, thereby reducing the lubricity of various engine components. The overall reliability of the crankshaft ventilation system is not high, and there is room for improvement. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes an engine that can realize secondary combustion of blowby gas, improve the thermal efficiency of the engine, and isolate the exhaust gas and condensed water in the supercharger from entering the exhaust pipe and the crankcase, eliminating the risk of engine oil emulsification, thereby ensuring the overall reliability of the engine.

[0005] According to an embodiment of the utility model, the engine comprises: a cylinder, a supercharger and an air outlet pipeline, wherein both ends of the air outlet pipeline are respectively connected to the cylinder and the supercharger; and a one-way valve group, wherein the one-way valve group is installed at the connection between the air outlet pipeline and the supercharger, and the one-way valve group is configured to conduct one-way from the air outlet pipeline to the inside of the supercharger.

[0006] According to the engine of the embodiment of the utility model, by providing a one-way valve group at the connection between the exhaust pipe and the supercharger, the blowby gas can be passed into the supercharger to achieve secondary combustion, thereby improving the thermal efficiency of the engine, and the exhaust gas and condensed water in the supercharger can be isolated from entering the exhaust pipe and the crankcase, eliminating the risk of engine oil emulsification, thereby ensuring the overall reliability of the engine.

[0007] According to the engine of some embodiments of the utility model, the one-way valve group includes a valve body, a baffle plate and a one-way valve diaphragm, and the valve body is connected to the outlet pipeline and the supercharger respectively;

[0008] The baffle plate is installed in the valve body, and the baffle plate is provided with a flow hole connected between the outlet pipeline and the supercharger. The one-way valve diaphragm is movably installed in the valve body, and the one-way valve diaphragm is configured to close the flow hole in the blocking position and open the flow hole in the conducting position.

[0009] According to the engine of some embodiments of the utility model, the baffle plate includes a mounting portion and a guide portion connected to each other, the mounting portion is connected to the valve body, the flow hole is provided at the mounting portion, and the one-way valve diaphragm is sleeved outside the guide portion;

[0010] The one-way valve diaphragm is configured to close the flow hole after moving along the guide portion in a first direction, and is configured to open the flow hole after moving along the guide portion in a second direction, and the first direction is opposite to the second direction.

[0011] According to the engine of some embodiments of the utility model, there are multiple flow holes, and the multiple flow holes are arranged in the installation part at intervals and distributed around the guide part.

[0012] According to the engine of some embodiments of the utility model, the mounting portion is provided with an annular outer limiting protrusion on the side facing the one-way valve diaphragm, the outer limiting protrusion surrounds the outer side of the flow hole, and the one-way valve diaphragm is suitable for pressing against the outer limiting protrusion to close the flow hole.

[0013] According to the engines of some embodiments of the utility model, the mounting portion is further provided with an annular inner limiting protrusion on the side facing the one-way valve diaphragm, the inner limiting protrusion is arranged around the guide portion, the flow hole is located between the inner limiting protrusion and the outer limiting protrusion, and the inner limiting protrusion is suitable for pressing against the one-way valve diaphragm.

[0014] According to some embodiments of the engine of the present invention, the valve body includes a first sub-valve body and a second sub-valve body, the first sub-valve body is connected to the exhaust pipe, the second sub-valve body is connected to the supercharger, and a movable space is defined between the first sub-valve body and the second sub-valve body, the baffle plate is connected to the first sub-valve body, and the one-way valve diaphragm is installed in the movable space and is located on the side of the baffle plate away from the first sub-valve body.

[0015] According to the engines of some embodiments of the present utility model, a clamping groove is defined at the connection between the first sub-valve body and the second sub-valve body, and a circumferential edge of the baffle plate extends into the clamping groove.

[0016] According to the engine of some embodiments of the utility model, a first sealing member is provided at the connection between the first sub-valve body and the end of the outlet pipe;

[0017] And / or, a second sealing member is provided at a connection between the second sub-valve body and the supercharger.

[0018] The utility model also provides a vehicle.

[0019] The vehicle according to the embodiment of the utility model is provided with an engine according to any one of the above embodiments.

[0020] The advantages of the vehicle and the above-mentioned engine over the prior art are different and will not be repeated here.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 It is a schematic diagram of the structure of the air outlet pipeline and the one-way valve group according to an embodiment of the utility model;

[0024] Figure 2 is a cross-sectional view of an air outlet pipeline, a one-way valve group and a supercharger according to an embodiment of the utility model;

[0025] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0026] Reference numerals:

[0027] Engine 100,

[0028] One-way valve group 1, valve body 11, first sub-valve body 111, second sub-valve body 112, movable space 113, first sealing member 114, second sealing member 115, clamping groove 116, connecting hole 117, baffle plate 12, mounting portion 121, flow hole 1211, outer limiting protrusion 1212, inner limiting protrusion 1213, guide portion 122, one-way valve diaphragm 13, and air outlet pipe 2. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Reference below Figure 1-Figure 2 Description According to the engine 100 of the embodiment of the utility model, a one-way valve group 1 is provided at the connection between the exhaust pipe 2 and the supercharger, so that the blow-by gas can be passed into the supercharger to participate in the combustion again, so as to improve the thermal efficiency of the engine 100, and the exhaust gas and condensed water of the supercharger can be isolated from entering the crankcase from the exhaust pipe 2, avoiding the risk of oil emulsification.

[0033] like Figure 1-Figure 2 As shown, an engine 100 according to an embodiment of the present invention comprises: a cylinder, a supercharger, an air outlet pipeline 2 and a one-way valve group 1.

[0034] The two ends of the exhaust pipe 2 are respectively connected to the cylinder and the supercharger. The air flow direction of the exhaust pipe 2 is from the cylinder to the supercharger. Specifically, the air inlet end of the exhaust pipe 2 is connected to the cylinder head cover of the cylinder. The exhaust pipe 2 can be connected to the cylinder, and the exhaust end of the exhaust pipe 2 is connected to the supercharger. The exhaust pipe 2 is also connected to the crankshaft ventilation pipe at the connection with the cylinder head cover. When the engine 100 is working, the leaked gas that does not participate in combustion enters the crankcase through the piston to form blowby gas. A crankcase ventilation duct is provided at the crankcase. The blowby gas enters the cylinder and the exhaust pipe 2 through the crankshaft ventilation pipe. The blowby gas entering the exhaust pipe 2 enters the supercharger.

[0035] The one-way valve group 1 is installed at the connection between the outlet pipe 2 and the supercharger. The one-way valve group 1 is configured to conduct one-way flow from the outlet pipe 2 to the inside of the supercharger. That is to say, through the one-way flow of the one-way valve group 1, the blowby gas in the outlet pipe 2 can be passed into the supercharger, and the gas in the supercharger cannot be reversely passed into the outlet pipe 2.

[0036] Specifically, the one-way valve group 1 is characterized by a one-way conduction function. The one-way valve group 1 is located at the outlet end of the outlet pipe 2. The one-way valve group 1 is detachably connected to the compression shell of the supercharger. The outlet end of the outlet pipe 2 can be fixed to the compression shell of the supercharger, and the outlet pipe 2 is connected to the supercharger through the one-way valve group 1. The one-way valve group 1 conducts from the outlet pipe 2 to the supercharger, and is closed in the direction from the supercharger to the outlet pipe 2, thereby realizing one-way flow from the outlet pipe 2 to the supercharger.

[0037] Furthermore, after the vehicle is started, when the engine 100 is under high load, the one-way valve group 1 is turned on, and the blowby gas in the crankcase passes through the crankshaft ventilation pipe and the exhaust pipe 2, and enters the supercharger through the one-way valve group 1, and re-participates in the combustion, so that the blowby gas is subjected to secondary combustion, which can improve the thermal efficiency of the engine 100 and reduce fuel consumption and emission pollution. By setting the exhaust pipe 2 and the one-way valve group 1, the blowby gas of the crankshaft ventilation pipe can be introduced into the exhaust pipe 2, so that the pressure in the crankcase of the engine 100 can be balanced under all operating conditions, and the problem of icing of the crankshaft ventilation pipe structure can be effectively solved, which can effectively reduce the development cost and the complexity of the crankcase system. In this embodiment, the exhaust pipe 2 and the one-way valve group 1 are simply arranged and have lower cost.

[0038] When the engine 100 is operating at a low load, the blowby gas generated by the combustion of the engine 100 is reduced. At this time, the one-way valve group 1 is closed, and the exhaust gas and condensed water in the supercharger cannot pass through the one-way valve group 1 into the exhaust pipe 2, and then cannot enter the crankcase to cause oil emulsification. Therefore, the risk of oil emulsification can be reduced, the wear of various parts of the engine 100 can be reduced, and the reliability of the engine 100 system can be improved.

[0039] According to the engine 100 of the embodiment of the utility model, by providing a one-way valve group 1, a one-way conduction from the exhaust pipe 2 to the supercharger can be achieved, and the blowby gas can be passed into the supercharger to achieve secondary combustion, thereby improving the thermal efficiency of the engine 100, and the exhaust gas and condensed water in the supercharger can be isolated from entering the exhaust pipe 2 and the crankcase, eliminating the risk of oil emulsification in the engine 100, thereby ensuring the overall reliability of the engine 100.

[0040] In some embodiments, the one-way valve group 1 includes a valve body 11, a baffle 12 and a one-way valve diaphragm 13. The valve body 11 is respectively connected to the air outlet pipeline 2 and the supercharger. The baffle 12 is installed in the valve body 11. The baffle 12 is provided with a flow hole 1211 connected between the air outlet pipeline 2 and the supercharger. The one-way valve diaphragm 13 is movably installed in the valve body 11. The one-way valve diaphragm 13 is configured to close the flow hole 1211 when in the blocking position and open the flow hole 1211 when in the conducting position.

[0041] That is, when the one-way valve diaphragm 13 moves relative to the valve body 11, the one-way valve diaphragm 13 can block or guide the flow hole 1211, thereby closing or opening the flow hole 1211. When the flow hole 1211 is open, the air outlet pipeline 2 is connected to the supercharger, and when the flow hole 1211 is closed, the air outlet pipeline 2 is disconnected from the supercharger.

[0042] Specifically, the valve body 11 is used to connect the one-way valve group 1 to the outlet pipeline 2 and the supercharger respectively, the baffle 12 is used to cooperate with the one-way valve diaphragm 13, and the valve body 11 can be detachably connected to the outlet pipeline 2 and the supercharger respectively, such as Figure 2 As shown, the baffle plate 12 is located in the valve body 11, close to one side of the air outlet pipe 2 and connected to the valve body 11, the baffle plate 12 is provided with a flow hole 1211, the flow hole 1211 runs through the baffle plate 12, and the air outlet pipe 2 can be connected with the supercharger, the one-way valve diaphragm 13 is located in the valve body 11, and close to one side of the supercharger, wherein the one-way valve diaphragm 13 is a movable part, and the one-way valve diaphragm 13 can move relative to the baffle plate 12 under the action of gas pressure, and can block or guide the flow hole 1211.

[0043] Among them, when the working conditions of the engine 100 are different, the amount of mixture leakage at the piston position is different. When the working condition of the engine 100 is high load, the blowby gas generated by the combustion of the engine 100 increases, and more blowby gas passes through the crankshaft ventilation pipe and the exhaust pipe 2 and enters the valve body 11. The blowby gas passes through the flow hole 1211 and pushes the one-way valve diaphragm 13 to move in the direction away from the baffle plate 12. The flow hole 1211 can be opened, and the blowby gas smoothly enters the supercharger to re-participate in the combustion. When the working condition of the engine 100 is low load, the blowby gas generated by the combustion of the engine 100 is reduced. At this time, the exhaust pipe 2 will not generate excess blowby gas, and the one-way valve diaphragm 13 is pushed by the exhaust gas in the supercharger. The one-way valve diaphragm 13 moves in the direction close to the baffle plate 12, and the flow hole 1211 can be closed to form a reverse seal. The exhaust gas and condensed water cannot enter the exhaust pipe 2 through the one-way valve group 1, and then cannot enter the crankcase to cause oil emulsification.

[0044] Thus, the opening and closing of the one-way valve group 1 can be selectively switched according to the working conditions of the engine 100. Under different working conditions of the engine 100, the pressure in the crankcase can be maintained at -7.5kPa to 2kPa, ensuring smooth ventilation of the crankcase, so that it can adapt to different states of the vehicle. At the same time, the provided outlet pipe 2 and the one-way valve group 1 can be used together to extend the ice blocking time of the air filter interface and solve the problem of ice blocking of the air filter.

[0045] In some embodiments, the baffle 12 includes a connected mounting portion 121 and a guide portion 122 , the mounting portion 121 is connected to the valve body 11 , the flow hole 1211 is disposed on the mounting portion 121 , and the one-way valve diaphragm 13 is sleeved outside the guide portion 122 .

[0046] Specifically, the baffle 12 includes a mounting portion 121 and a guide portion 122, the mounting portion 121 and the guide portion 122 are connected, and in actual design, the mounting portion 121 and the guide portion 122 can be set as an integrated structure, the mounting portion 121 is close to the air outlet pipe 2, and the guide portion 122 is close to the supercharger. Figure 2 and Figure 3 As shown, the guide portion 122 is connected to the lower side of the mounting portion 121, and the mounting portion 121 and the valve body 11 can be connected by a snap-fitting manner. A snap-fitting groove can be provided in one of the mounting portion 121 and the valve body 11, and a snap-fitting boss can be provided in the other. The snap-fitting boss is snapped into the snap-fitting groove, so that the mounting portion 121 and the valve body 11 can be connected. The guide portion 122 plays a guiding role. The guide portion 122 is plug-connected to the lower side structure of the valve body 11, and the guide portion 122 is located in the middle position of the mounting portion 121. The guide portion 122 and the mounting portion 121 can be respectively constructed as circular structures, and the diameter of the guide portion 122 is smaller than the diameter of the mounting portion 121.

[0047] Among them, the flow hole 1211 is arranged in the mounting portion 121, and the flow hole 1211 can be constructed as a circular hole, a strip hole, etc., and runs through the mounting portion 121. The one-way valve diaphragm 13 is located at the lower side of the mounting portion 121, and the one-way valve diaphragm 13 is provided with a mounting hole for sleeve-mounting the one-way valve diaphragm 13 outside the guide portion 122. The diameter of the one-way valve diaphragm 13 is relatively large, and the flow hole 1211 can be blocked.

[0048] The one-way valve diaphragm 13 is configured to close the flow hole 1211 after moving in a first direction along the guide portion 122 , and is configured to open the flow hole 1211 after moving in a second direction along the guide portion 122 , the first direction being opposite to the second direction.

[0049] Specifically, the first direction and the second direction are parallel and opposite, and the two are parallel to the flow direction of the blow-by gas inside the valve body 11. The first direction can be set as upward and the second direction as downward. After the blow-by gas flows into the valve body 11 from the outlet pipe 2, the one-way valve diaphragm 13 is pushed to move along the guide portion 122, and after moving downward, the flow hole 1211 is opened, and the blow-by gas can be passed into the supercharger. When no blow-by gas enters the valve body 11, there is no thrust of the blow-by gas, and the one-way valve diaphragm 13 will move along the guide portion 122, and move upward to block the flow hole 1211, and the flow hole 1211 can be closed, thereby preventing exhaust gas and condensed water from entering the outlet pipe 2.

[0050] Therefore, the one-way valve diaphragm 13 is sleeved outside the guide portion 122, which can keep the center of the one-way valve diaphragm 13 unchanged, and when the one-way valve diaphragm 13 moves along the guide portion 122, the movement state of the one-way valve diaphragm 13 can be ensured to remain consistent, and after repeated movements, the relative position of the one-way valve diaphragm 13 is fixed, which can improve the repeatability of the one-way valve diaphragm 13.

[0051] In some embodiments, there are multiple flow holes 1211 , and the multiple flow holes 1211 are disposed at intervals on the mounting portion 121 and distributed around the guide portion 122 .

[0052] Specifically, the mounting portion 121 is provided with a plurality of flow holes 1211, the plurality of flow holes 1211 are spaced apart and distributed, the plurality of flow holes 1211 are spaced apart and distributed from the guide portion 122, and the plurality of flow holes 1211 are distributed around the guide portion 122, so that after the blow-by gas in the outlet pipe 2 enters the valve body 11, it enters the plurality of flow holes 1211, and the blow-by gas in the plurality of flow holes 1211 blows the one-way valve diaphragm 13, so that the one-way valve diaphragm 13 moves downward along the guide portion 122, opens the flow holes 1211, and the blow-by gas flows out smoothly into the supercharger, realizing the re-combustion of the blow-by gas. When no blow-by gas enters the valve body 11, the one-way valve diaphragm 13 moves toward the flow holes 1211, closes the plurality of flow holes 1211, forms a reverse seal, and prevents the exhaust gas and condensed water in the supercharger from entering the outlet pipe 2 and the crankcase through the plurality of flow holes 1211.

[0053] Among them, Figure 3 As shown, there are four flow holes 1211, and the blow-by gas can enter the supercharger through the four flow holes 1211, wherein the number and arrangement of the flow holes 1211 are not limited to those described above, and can be arranged according to actual needs.

[0054] In some embodiments, the mounting portion 121 is provided with an annular outer limiting protrusion 1212 on the side facing the one-way valve diaphragm 13, and the outer limiting protrusion 1212 surrounds the outer side of the flow hole 1211. The one-way valve diaphragm 13 is suitable for pressing against the outer limiting protrusion 1212 to close the flow hole 1211. That is to say, when the one-way valve diaphragm 13 is pressed against the outer limiting protrusion 1212, the one-way valve diaphragm 13 can close the flow hole 1211.

[0055] Specifically, Figure 2 and Figure 3 As shown, the mounting portion 121 is provided with an outer limiting protrusion 1212 on the side facing the one-way valve diaphragm 13, and the outer limiting protrusion 1212 is constructed as a circular arc-shaped sealing rib, and the outer limiting protrusion 1212 extends circumferentially, and the outer limiting protrusion 1212 is spaced apart from the flow hole 1211, and is distributed around the flow hole 1211 located at the outermost side, and the outer limiting protrusion 1212 protrudes toward the one-way valve diaphragm 13, and protrudes downward along the surface of the flow hole 1211, so that the one-way valve diaphragm 13 and the outer limiting protrusion 1212 are elastically pressed to close the flow hole 1211.

[0056] Therefore, when the one-way valve diaphragm 13 is impacted by exhaust gas and condensed water, after the one-way valve diaphragm 13 moves to press against the outer limiting convex part 1212 in a circumferential circle, it can indirectly block the flow hole 1211, and the two are tightly fitted, and the sealing effect is good. No matter how large the deformation of the one-way valve diaphragm 13 is, since the sealing rib is a raised arc shape, the one-way valve diaphragm 13 can always fit tightly with the area of ​​the sealing rib during the deformation process, and the relative displacement of the sealing rib and the one-way valve diaphragm 13 during the deformation process is relatively smooth, and they fit in real time, which can ensure that there is no leakage risk in the sealing area, and the structure is simple and the stability is better.

[0057] In some embodiments, the mounting portion 121 is further provided with an annular inner limiting protrusion 1213 on the side facing the one-way valve diaphragm 13, the inner limiting protrusion 1213 is arranged around the guide portion 122, the flow hole 1211 is located between the inner limiting protrusion 1213 and the outer limiting protrusion 1212, and the inner limiting protrusion 1213 is suitable for pressing against the one-way valve diaphragm 13.

[0058] Specifically, Figure 2 and Figure 3As shown, the mounting portion 121 is provided with an inner limiting protrusion 1213 on the side facing the one-way valve diaphragm 13. The inner limiting protrusion 1213 has the same structure as the outer limiting protrusion 1212, and can also be constructed as a sealing rib in the shape of an arc, and the inner limiting protrusion 1213 extends circumferentially, the inner limiting protrusion 1213 is arranged close to the guide portion 122 and is spaced apart from the flow hole 1211, and is distributed around the guide portion 122, and the flow hole 1211 is located between the outer limiting protrusion 1212 and the inner limiting protrusion 1213, the inner limiting protrusion 1213 protrudes toward the one-way valve diaphragm 13, and protrudes downward along the surface of the flow hole 1211, so that when the inner limiting protrusion 1213 elastically presses against the one-way valve diaphragm 13, the flow hole 1211 at the baffle 12 can be closed.

[0059] In some embodiments, the valve body 11 includes a first sub-valve body 111 and a second sub-valve body 112, the first sub-valve body 111 is connected to the air outlet pipe 2, the second sub-valve body 112 is connected to the supercharger, and a movable space 113 is defined between the first sub-valve body 111 and the second sub-valve body 112, the baffle plate 12 is connected to the first sub-valve body 111, and the one-way valve diaphragm 13 is installed in the movable space 113 and is located on the side of the baffle plate 12 away from the first sub-valve body 111.

[0060] Specifically, the first sub-valve body 111 and the second sub-valve body 112 are connected. Figure 2 and Figure 3 As shown, the first sub-valve body 111 is located on the upper side of the second sub-valve body 112. The first sub-valve body 111 is provided with a connecting boss, and the second sub-valve body 112 is provided with a connecting groove. The connecting boss and the connecting groove are distributed correspondingly and both extend along the circumferential direction. The connecting boss is inserted into the connecting groove to realize the plug-in connection between the two. The first sub-valve body 111 and the second sub-valve body 112 are welded and connected, and the connection is firm and reliable, and the consistency of the position of the one-way valve diaphragm 13 can be ensured. Figure 1 and Figure 2 As shown, the first sub-valve body 111 is formed with an extension section, and a connecting hole 117 is provided in the extension section. The first sub-valve body 111 is detachably connected to the supercharger by inserting connecting bolts, so that the connection of the one-way valve group 1 can be fixed.

[0061] Among them, an active space 113 is defined between the first sub-valve body 111 and the second sub-valve body 112, the baffle plate 12 is located in the active space 113, and the one-way valve diaphragm 13 is installed in the lower area of ​​the active space 113, and the one-way valve diaphragm 13 is located on the side of the baffle plate 12 away from the first sub-valve body 111. In this way, the one-way valve diaphragm 13 can move relative to the guide portion 122 in the active space 113 to close and open the flow hole 1211, and the overall structure is simple, the connection is reliable, and the internal sealing is good.

[0062] In some embodiments, a clamping groove 116 is defined at the connection between the first sub-valve body 111 and the second sub-valve body 112 , and the circumferential edge of the baffle plate 12 extends into the clamping groove 116 , that is, the baffle plate 12 is installed between the first sub-valve body 111 and the second sub-valve body 112 through the clamping groove 116 .

[0063] Specifically, Figure 3 As shown, the first sub-valve body 111 and the second sub-valve body 112 define a clamping groove 116 at the connection, and the clamping groove 116 includes an upper clamping groove and a lower clamping groove. The first sub-valve body 111 is provided with an upper clamping groove on a side close to the second sub-valve body 112, and the second sub-valve body 112 is provided with a lower clamping groove on a side close to the first sub-valve body 111. When installing, the circumferential edge of the baffle plate 12 is extended into the clamping groove 116, and the upper end of the baffle plate 12 is aligned with the upper clamping groove 116. The top of the clamping groove is fitted, and the lower end of the baffle plate 12 is fitted with the bottom of the lower clamping groove, and the mounting portion 121 of the baffle plate 12 is installed in the clamping groove 116, and the guide portion 122 of the baffle plate 12 is located in the second sub-valve body 112 and is connected and fixed to the second sub-valve body 112, and then the first sub-valve body 111 and the second sub-valve body 112 are welded and connected, so that the baffle plate 12 can be clamped in the clamping groove 116, and its structure is simple and the installation is reliable.

[0064] In some embodiments, a first sealing member 114 is provided at the connection between the first sub-valve body 111 and the end of the gas outlet pipe 2. Figure 2 As shown, the air inlet end of the first sub-valve body 111 is provided with a first sealing member 114, and the first sealing member 114 is sleeved on the outside of the first sub-valve body 111. The first sub-valve body 111 extends to the air outlet end of the air outlet pipe 2, and the outer periphery of the first sealing member 114 is pressed against the inner peripheral wall of the air outlet pipe 2, and the inner peripheral wall of the first sealing member 114 is pressed against the outer peripheral wall of the first sub-valve body 111, so as to seal the connection between the first sub-valve body 111 and the air outlet pipe 2 to prevent gas leakage. The first sealing member 114 can be made of rubber or other materials, which has good elasticity and wear resistance, and the first sealing member 114 can be constructed as a sealing ring, and has a simple structure and good sealing performance.

[0065] And / or, a second sealing member 115 is provided at the connection between the second sub-valve body 112 and the supercharger, such as Figure 2As shown, the outer sleeve of the second sub-valve body 112 is provided with a second sealing member 115, the first sub-valve body 111 is provided with a mounting groove, the second sealing member 115 is installed in the mounting groove, the second sub-valve body 112 extends into the supercharger, the outer periphery of the second sealing member 115 is pressed against the inner peripheral wall of the supercharger, and the inner peripheral wall of the second sealing member 115 is pressed against the outer peripheral wall of the second sub-valve body 112, so as to seal the connection between the second sub-valve body 112 and the supercharger to prevent gas leakage. Similarly, the second sealing member 115 can be made of materials such as rubber, which has good elasticity and wear resistance, and the second sealing member 115 can be constructed as a sealing ring with a simple structure and good sealing performance.

[0066] The utility model also provides a vehicle.

[0067] According to the vehicle of the embodiment of the utility model, an engine 100 of any one of the above-mentioned embodiments is provided. By providing a one-way valve group 1, one-way conduction from the exhaust pipe 2 to the supercharger can be achieved, and the blowby gas can be passed into the supercharger to achieve secondary combustion, thereby improving the thermal efficiency of the engine 100, and the exhaust gas and condensed water in the supercharger can be isolated from entering the exhaust pipe 2 and the crankcase, eliminating the risk of emulsification of the engine oil of the engine 100, thereby ensuring the overall reliability of the engine 100. The one-way valve group 1 of this embodiment has a simple structure and a wider range of applications. It can be arranged and used in general engines 100, especially for new engines 100 for reducing fuel consumption and emissions.

[0068] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0069] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An engine, characterized in that: include: A cylinder, a supercharger and an air outlet pipeline, wherein two ends of the air outlet pipeline are respectively connected to the cylinder and the supercharger; A one-way valve group, the one-way valve group is installed at the connection between the air outlet pipeline and the supercharger, and the one-way valve group is configured to conduct one-way flow from the air outlet pipeline to the inside of the supercharger; The one-way valve group includes a valve body, a baffle plate and a one-way valve diaphragm, and the valve body is connected to the air outlet pipeline and the supercharger respectively; The baffle is installed in the valve body, and the baffle is provided with a flow hole connected between the air outlet pipeline and the supercharger. The one-way valve diaphragm is movably installed in the valve body, and the one-way valve diaphragm is configured to close the flow hole when in the blocking position and open the flow hole when in the conducting position; The baffle plate comprises a connected mounting portion and a guide portion, the mounting portion is connected to the valve body, the flow hole is arranged on the mounting portion, and the one-way valve diaphragm is sleeved outside the guide portion; The one-way valve diaphragm is configured to close the flow hole after moving along the guide portion in a first direction, and is configured to open the flow hole after moving along the guide portion in a second direction, and the first direction is opposite to the second direction.

2. The engine according to claim 1, characterized in that There are a plurality of flow holes, and the plurality of flow holes are disposed on the mounting portion at intervals and distributed around the guide portion.

3. The engine according to claim 1, characterized in that The mounting portion is provided with an annular outer limiting convex portion on one side facing the one-way valve diaphragm, the outer limiting convex portion surrounds the outer side of the flow hole, and the one-way valve diaphragm is suitable for pressing against the outer limiting convex portion to close the flow hole.

4. The engine according to claim 3, characterized in that The mounting portion is further provided with an annular inner limiting protrusion on the side facing the one-way valve diaphragm, the inner limiting protrusion is arranged around the guide portion, the flow hole is located between the inner limiting protrusion and the outer limiting protrusion, and the inner limiting protrusion is suitable for pressing against the one-way valve diaphragm.

5. The engine according to claim 1, characterized in that The valve body includes a first sub-valve body and a second sub-valve body, the first sub-valve body is connected to the air outlet pipeline, the second sub-valve body is connected to the supercharger, and a movable space is defined between the first sub-valve body and the second sub-valve body, the baffle plate is connected to the first sub-valve body, and the one-way valve diaphragm is installed in the movable space and is located on the side of the baffle plate away from the first sub-valve body.

6. The engine according to claim 5, characterized in that A clamping groove is defined at the connection between the first sub-valve body and the second sub-valve body, and a circumferential edge of the baffle plate extends into the clamping groove.

7. The engine according to claim 5, characterized in that A first sealing member is provided at the connection between the first sub-valve body and the end of the gas outlet pipeline; And / or, a second sealing member is provided at a connection between the second sub-valve body and the supercharger.

8. A vehicle, characterized in that: An engine according to any one of claims 1 to 7 is provided.

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