Lubricating structure of engine and engine

Abstract

The utility model discloses lubricating structure and engine of engine, include: crankcase body, cylinder head and cylinder cover, and the first oil hole and the second oil hole are arranged with cylinder head respectively, the first oil hole with the second oil hole are linked together, and commonly constitute the oil channel, the cylinder cover includes: top and the side wall of the end face that extends from this top to cylinder head, the top is provided with the chamber that links together the second oil hole, the surface of the chamber towards the side wall place sets up first directional port and second directional port in the opposite direction, first directional port with second directional port are configured to condense separation to mixed gas being introduced in the chamber, and the oil mist separated out is spouted in the opposite direction, makes it hit the side wall after common in the same exhaust port and discharges, the oil mist in the process of spouting and flowing to the exhaust port lubricates the valve timing system in cylinder head.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, specifically to the lubrication structure of an engine and an engine. Background Technology

[0002] Engines typically use splash lubrication to lubricate the valve train (such as rocker arms, valves, and valve guides) within the cylinder head. This means that lubricating oil is delivered to the cylinder head via oil passages for lubrication, and excess oil returns to the crankcase through the return port. However, during this process, some lubricating oil, after being delivered to the cylinder head, does not completely return to the crankcase via the return path. Instead, it is directly discharged through the breather vanes on the cylinder head (a device for expelling leaking exhaust gases), leading to increased lubricating oil consumption. Utility Model Content In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a lubrication structure and engine for the engine, so as to solve the problem of increased fuel consumption in the existing technology.

[0003] To achieve the above objectives, the present invention adopts the following technical solution: The lubrication structure of the engine includes: a crankcase, a cylinder head, and a cylinder head connected in sequence. The crankcase and the cylinder head are respectively provided with a first oil hole and a second oil hole. The first oil hole and the second oil hole are connected and together form an oil passage. The cylinder head includes: a top and a sidewall extending from the top to the end face of the cylinder head. The top is provided with a chamber that communicates with the second oil hole. The surface of the chamber facing the side wall is provided with a first directional port and a second directional port in opposite directions. The first directional port and the second directional port are configured to condense and separate the mixed gas introduced into the chamber, and spray the separated oil mist in opposite directions so that it impacts the side wall and then flows into the same exhaust port for discharge. The oil mist lubricates the valve train system inside the cylinder head as it is ejected and flows toward the exhaust port.

[0004] Furthermore, a baffle is provided at the top, and the baffle is covered by a guide plate to form the chamber between the baffle and the top. The guide plate is provided with a guide port for connecting the second oil hole and the chamber.

[0005] Furthermore, the baffle includes: a first oil-blocking rib and a second oil-blocking rib that are inclined in opposite directions, and a third oil-blocking rib that connects the first oil-blocking rib and the second oil-blocking rib. A gap is formed between the first oil-blocking rib and the second oil-blocking rib and the guide plate. The gap is configured as the first directional opening and the second directional opening.

[0006] Furthermore, from the cylinder head in the direction of the cylinder head, the first oil baffle and the second oil baffle cause the chamber to at least partially taper.

[0007] Furthermore, the guide plate and the third oil baffle are in sealed contact.

[0008] Furthermore, the top is provided with an inclined surface, which connects the first oil baffle and the second oil baffle and is in sealed contact with the guide plate.

[0009] Furthermore, the guide plate has a notch at its end near the first directional port and / or the second directional port. The notch communicates with the chamber and guides the mixed gas toward the side wall and / or the gas distribution system.

[0010] Furthermore, the deflector plate is detachably connected to the top.

[0011] Furthermore, the sidewall is provided with two impact surfaces in a mirror image, and the two impact surfaces are respectively provided in a one-to-one correspondence with the first directional port and the second directional port, and the impact surfaces are inclined in the direction away from the chamber.

[0012] An engine, including: the lubrication structure of the engine described above.

[0013] Compared with the prior art, this utility model has the following beneficial effects: The cylinder head is provided with a chamber located between the oil passage and the exhaust port, which extends the lubrication path of the lubricating oil. This not only avoids direct discharge and reduces the discharge volume, but also enables it to fully lubricate the valve train system in the cylinder head, ensuring the lubrication effect. Furthermore, the mixed gas arrives at the chamber by injection and condenses into liquid in the chamber. Under the continuous impact of oil vapor and gravity, the oil mist-like lubricating liquid can be discharged through the first and second directional ports and enter the valve train system to achieve full lubrication, improving the uniformity and sufficiency of lubrication of the valve train system and reducing oil consumption. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the lubrication structure according to an embodiment of the present invention; Figure 2 This is a partial exploded view of the lubrication structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a cylinder head according to an embodiment of the present invention; Figure 4 This is an exploded schematic diagram of a cylinder head according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the lubrication path according to an embodiment of the present invention.

[0015] The reference numerals in the accompanying drawings include: 1. Crankcase; 101. First oil hole; 2. Cylinder head; 201. Second oil hole; 3. Cylinder head; 301. Top; 302. Side wall; 303. Chamber; 304. First directional port; 305. Second directional port; 4. Baffle; 401. First oil baffle; 402. Second oil baffle; 403. Third oil baffle; 5. Deflector plate; 501. Deflector port; 502. Notch; 6. Inclined surface; 7. Impact surface. Detailed Implementation

[0016] The present invention will be further described in detail below through specific embodiments: In the embodiments of this utility model, such as Figures 1-5 As shown, the lubrication structure of the engine includes: a crankcase 1, a cylinder head 2, and a cylinder head 3 connected in sequence. The crankcase 1 and the cylinder head 2 are respectively provided with a first oil hole 101 and a second oil hole 201. The first oil hole 101 and the second oil hole 201 are connected and together form an oil passage. The cylinder head 3 includes a top 301 and a sidewall 302 extending from the top 301 to the end face of the cylinder head 2. The top 301 is provided with a chamber 303 communicating with the second oil hole 201. The surface of the chamber 303 facing the sidewall 302 is provided with a first directional port 304 and a second directional port 305 in opposite directions. The first directional port 304 and the second directional port 305 are configured to condense and separate the mixed gas introduced into the chamber 303, and spray the separated oil mist in opposite directions so that it impacts the sidewall 302 and then flows into the same exhaust port for discharge. The oil mist lubricates the valve train system in the cylinder head 2 during the process of being sprayed out and flowing to the exhaust port.

[0017] Specifically, in this embodiment of the invention, the crankcase 1, cylinder head 2, and cylinder head 3, connected in sequence, form an integral frame structure. A first oil hole 101 is provided inside the crankcase 1, and a second oil hole 201 is provided inside the cylinder head 2. The first oil hole 101 and the second oil hole 201 are connected to form an oil passage (not shown). This allows the piston movement to push the mixed gas (oil mist, oil droplets, etc.) upwards, propelling the lubricating oil and oil vapor upwards along the oil passage and injecting them into the cylinder head 2, allowing them to enter the cylinder head 2 via the crankcase 1. Of course, as... Figure 2As shown, an oil guide pipe is provided at the second oil hole 201 of the cylinder head 2 to precisely guide lubricating oil and oil vapor into the cylinder head 2. That is, lubricating oil and its vapor can be precisely introduced into the chamber 303 through the oil guide pipe, which can effectively reduce early losses; the oil mist-like lubricating fluid enters the rocker arm, valve and valve guide along the oil blocking path, giving priority to precise lubrication of key components.

[0018] In this embodiment of the invention, the cylinder head 3 is defined as including a top 301 and a side wall 302. The side wall 302 is configured to extend from the top 301 to the end face of the cylinder head 2, and an inner cavity is defined between the top 301 and the side wall 302. This inner cavity communicates with the internal space of the cylinder head 2 and is used to accommodate the valve train system. Additionally, a chamber 303 is provided between the oil passage and the exhaust port (not shown). This chamber 303 is formed in the top 301 and connects to the second oil hole 201 of the oil passage and the exhaust port. This allows the mixed gas, after being ejected through the second oil hole 201, to enter the chamber 303. The chamber 303 then processes the mixed gas before it is discharged through the exhaust port. In this process, the added chamber 303 not only extends the flow path of the lubricating oil, replacing the original direct discharge and reducing oil consumption, but also provides comprehensive lubrication of the valve train system before discharge.

[0019] Specifically, chamber 303 is provided with a first directional port 304 and a second directional port 305 in opposite directions, both of which are connected to chamber 303. Thus, when the mixed gas is injected into chamber 303, it can contact the inner wall of chamber 303 and condense into liquid. Under the continuous impact of oil vapor and gravity, the oil mist-like lubricant enters the rocker arm, valves, and other parts of the valve train system along the first directional port 304 and the second directional port 305, achieving comprehensive lubrication. Simultaneously, lubricant falling into chamber 303 can also be guided to the rocker arm through the corresponding directional ports to ensure lubrication effectiveness.

[0020] This embodiment provides a chamber 303 within the cylinder head 3, located between the oil passage and the exhaust port. This chamber extends the flow path of the lubricating oil, preventing it from being directly discharged from the exhaust port and effectively reducing the amount of lubricating oil discharged through the breather, thus reducing oil consumption. Furthermore, it guides the condensed lubricating oil to the valve train, enhancing the lubrication effect of the valve train and improving the reliability and durability of the engine. At the same time, it has a compact structure, high integration, and does not require the introduction of additional complex components, resulting in low manufacturing costs.

[0021] like Figure 3 , Figure 4As shown, in one embodiment, the top 301 is provided with a baffle 4, which is covered by a guide plate 5, for forming the chamber 303 between the baffle 4 and the top 301. Specifically, in order to form the chamber 303 on the top 301 of the cylinder head 3, this embodiment provides a baffle 4 and a guide plate 5, which together with the top 301 form the chamber 303. In addition, the guide plate 5 is provided with a guide port 501 for connecting the second oil hole 201 and the chamber 303.

[0022] Furthermore, such as Figure 4 As shown, in one embodiment, the baffle 4 includes: a first oil-blocking rib 401 and a second oil-blocking rib 402 inclined in opposite directions, and a third oil-blocking rib 403 connecting the first oil-blocking rib 401 and the second oil-blocking rib 402. A gap is formed between the first oil-blocking rib 401 and the second oil-blocking rib 402 and the guide plate 5. This gap is configured as the first directional opening 304 and the second directional opening 305. Specifically, this is done to allow the chamber 303 to form two directional openings, and to ensure precise guidance of the lubricating oil within the chamber 303. In this embodiment, the baffle 4 is defined to include the first oil-blocking rib 401, the second oil-blocking rib 402, and the third oil-blocking rib 403. The three oil-blocking ribs are integrally formed with the top 301 of the cylinder head 3, and the first oil-blocking rib 401 and the second oil-blocking rib 402 are inclined in opposite directions. Thus, a gap is formed between the ends of the two oil-blocking ribs and the guide plate 5, and this gap is the first directional opening 304 and the second directional opening 305. After the mixed gas enters the chamber 303, it condenses into liquid through the oil baffles. Under continuous impact and gravity, it can slide out of the chamber 303 along the oil baffles. The inclined first oil baffle 401 and second oil baffle 402 form a guide surface so that the lubricating oil falls into the valve train. Thus, from the cylinder head 2 to the cylinder cover 3, the first oil baffle 401 and the second oil baffle 402 make the chamber 303 at least partially constricted.

[0023] Additionally, lubricating oil may fall to the deflector 5 due to gravity. Since the cylinder head 2 and cylinder head 3 are inclined, the deflector 5 is also inclined, allowing the lubricating oil on it to be guided to the valve train. Furthermore, since each oil baffle is integrally formed with the cylinder head 3, it is equivalent to the top 301 of the cylinder head 3 extending into the direction of the cylinder head 2 as a protrusion. This protrusion has a corresponding inclined structure, eliminating the need for additional components and reducing manufacturing costs.

[0024] like Figure 3As shown, in one embodiment, the guide plate 5 is sealed against the third oil baffle 403. Specifically, in order to constrain the lubrication path of the lubricating oil, so that it exits from the first directional port 304 to form a first lubrication path, and exits from the second directional port 305 to form a second lubrication path; for this purpose, this embodiment seals against the end face of the guide plate 5 by the end of the third oil baffle 403, so as to prevent the lubricating oil in the chamber 303 from splashing everywhere or accumulating in non-target areas, that is, to facilitate the lubricating oil to be concentrated and guided to the air distribution system that needs lubrication.

[0025] Furthermore, such as Figure 4 As shown, in one embodiment, the top 301 is provided with an inclined surface 6, which connects the first oil-blocking rib 401 and the second oil-blocking rib 402, and seals against the guide plate 5. Specifically, in order to further constrain the lubrication path of the lubricating oil and prevent it from accumulating in non-target areas, this embodiment uses the inclined surface 6 formed by the top 301 to connect the first oil-blocking rib 401 and the second oil-blocking rib 402, so that the first oil-blocking rib 401, the second oil-blocking rib 402, the third oil-blocking rib 403 and the inclined surface 6 together form a cavity structure that is closed on all four sides; at the same time, the inclined surface 6 is also inclined so that the lubricating oil can be discharged along the corresponding inclined part to the corresponding directional port after condensation at this point, or fall to the lowered guide plate 5.

[0026] like Figure 3 , Figure 4 As shown, in one embodiment, the guide plate 5 has a notch 502 at its end near the first directional port 304 and / or the second directional port 305. The notch 502 communicates with the chamber 303 and guides the mixed gas towards the side wall 302 and / or the gas distribution system. Specifically, notches 502 are provided at both opposite ends of the guide plate 5, and these notches 502 communicate with the corresponding first directional port 304 or second directional port 305. Thus, the design of the notch 502 allows the lubricating oil in the chamber 303 to be introduced into the gas distribution system for sufficient lubrication. Furthermore, the design of the notch 502 increases the cross-sectional area of ​​the corresponding directional port, which is also beneficial for the lubricating oil in the chamber 303 to be discharged.

[0027] like Figure 3 As shown, in one embodiment, the guide plate 5 is detachably connected to the top 301. Specifically, for ease of installation, this embodiment uses screws to install the guide plate 5 to the cylinder head 3 to achieve a detachable connection between the two; at the same time, the guide plate 5 not only serves to guide and receive lubricating oil, but also its thickness provides a good seal for the cavity.

[0028] like Figures 3-5As shown, in one embodiment, the sidewall 302 is provided with two impact surfaces 7 arranged in a mirror image. The two impact surfaces 7 correspond one-to-one with the first directional port 304 and the second directional port 305, respectively, and are inclined away from the chamber 303. Specifically, to allow oil mist discharged in opposite directions to converge at the same exhaust port, this embodiment provides two impact surfaces 7 on the sidewall 302. These two impact surfaces 7 are also inclined and correspond to the first directional port 304 and the second directional port 305, respectively. Thus, the oil mist discharged through the first directional port 304 and the second directional port 305 can move to the corresponding impact surface 7, and after being impacted and redirected by the impact surface 7, switch from opposing motion to opposing motion, allowing them to converge into the exhaust port. Of course, during this process, lubricating oil provides corresponding lubrication to the gas distribution system.

[0029] This embodiment also provides an engine including the lubrication structure described above. The specific structure of the lubrication structure is as described in the above embodiment. Since this engine adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. The engine's lubrication system, including: A crankcase, a cylinder head, and a cylinder head are connected in sequence. The crankcase and the cylinder head are respectively provided with a first oil hole and a second oil hole. The first oil hole and the second oil hole are connected and together form an oil passage. The cylinder head includes a top and a sidewall extending from the top to the end face of the cylinder head. The top is provided with a chamber that communicates with the second oil hole. The surface of the chamber facing the side wall is provided with a first directional port and a second directional port in opposite directions. The first directional port and the second directional port are configured to condense and separate the mixed gas introduced into the chamber, and spray the separated oil mist in opposite directions so that it impacts the side wall and then flows into the same exhaust port for discharge. The oil mist lubricates the valve train system inside the cylinder head as it is ejected and flows toward the exhaust port.

2. The lubrication structure of the engine as described in claim 1, characterized in that, The top is provided with a baffle, which is covered by a guide plate to form the chamber between the baffle and the top; The guide plate is provided with a guide port for connecting the second oil hole and the chamber.

3. The lubrication structure of the engine as described in claim 2, characterized in that, The baffle includes: a first oil-blocking rib and a second oil-blocking rib that are inclined in opposite directions, and a third oil-blocking rib that connects the first oil-blocking rib and the second oil-blocking rib. A gap is formed between the first oil-blocking rib and the second oil-blocking rib and the guide plate. The gap is configured as the first directional opening and the second directional opening.

4. The lubrication structure of the engine as described in claim 3, characterized in that, From the cylinder head direction, the first oil baffle and the second oil baffle cause the chamber to at least partially taper.

5. The lubrication structure of the engine as described in claim 3, characterized in that, The guide plate and the third oil baffle are in sealed contact.

6. The lubrication structure of the engine as described in any one of claims 3-5, characterized in that, The top is provided with an inclined surface, which connects the first oil baffle and the second oil baffle and is in sealed contact with the guide plate.

7. The lubrication structure of the engine as described in any one of claims 2-5, characterized in that, The guide plate has a notch at its end near the first directional port and / or the second directional port. The notch communicates with the chamber and guides the mixed gas toward the side wall and / or the gas distribution system.

8. The lubrication structure of the engine as described in any one of claims 2-5, characterized in that, The deflector plate is detachably connected to the top.

9. The lubrication structure of the engine as described in claim 1, characterized in that, The sidewall is mirror-shaped with two impact surfaces, which correspond one-to-one with the first directional port and the second directional port, respectively, and the impact surfaces are inclined away from the chamber.

10. An engine, characterized in that, include: The lubrication structure of the engine as described in any one of claims 1-9.

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