CN214007261U - Valve mechanism of engine - Google Patents
Valve mechanism of engine Download PDFInfo
- Publication number
- CN214007261U CN214007261U CN202022605796.7U CN202022605796U CN214007261U CN 214007261 U CN214007261 U CN 214007261U CN 202022605796 U CN202022605796 U CN 202022605796U CN 214007261 U CN214007261 U CN 214007261U
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- oil
- lubricating oil
- flow guide
- rocker arm
- valve
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- Lubrication Of Internal Combustion Engines (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The utility model relates to the technical field of engines, a valve timing of engine is disclosed. The valve actuating mechanism comprises a rocker shaft, a rocker arm sleeved on the rocker shaft, a valve assembly, a push rod assembly and an oil supply device, wherein: two ends of the rocker arm are respectively provided with a connecting piece, and the two connecting pieces are respectively connected with the valve assembly and the push rod assembly to form a friction pair; a lubricating oil passage is arranged in the connecting piece, lubricating oil penetrates through the connecting piece, an oil inlet hole of the lubricating oil passage is exposed out of the surface of the rocker arm, and an oil outlet hole of the lubricating oil passage is communicated with a contact gap of a corresponding friction pair; the oil supply device is used for supplying lubricating oil to the oil inlet hole of the lubricating oil channel. In the embodiment, the transverse oil duct is omitted from being arranged in the rocker arm, the internal oil way of the valve actuating mechanism is simplified, and the structural strength and the fatigue strength of the rocker arm are improved.
Description
Technical Field
The utility model relates to the technical field of engines, especially, relate to a valve timing of engine.
Background
The valve train of the engine has various types, and generally, as shown in fig. 1, includes parts such as a rocker shaft 1, a rocker arm 2, a valve bridge (or valve) 3, a push rod 4, etc., wherein the rocker arm 2 is sleeved on the rocker shaft 1, one end of the rocker arm 2 is connected with the valve bridge 3, and the other end is connected with the push rod 4, thereby forming a lever structure. The connecting position between the rocker arm 2, the valve bridge 3 and the push rod is an important friction pair in the valve train, and the prior diesel engine generally adopts forced lubrication to reduce the abrasion of parts of the valve train and accelerate the heat dissipation of the parts, namely, holes are drilled in the rocker arm 2, and pressure lubricating oil is introduced to each friction pair through an oil duct to lubricate the parts.
Specifically, forced lubrication is typically achieved by drilling holes into the rocker arm 2 and associated components to form a complex oil gallery that directs the lubricating oil in the main oil gallery of the rocker arm shaft 1 to the friction pair. As shown in fig. 1, a transverse oil passage 21 is provided in the rocker arm 2, the transverse oil passage 21 communicates with the main oil passage in the rocker arm shaft 1, an internal oil passage 51 is provided in each connecting piece 5 to communicate with the transverse oil passage 21 in the rocker arm 2, and the lubricating oil flows into the clearance of the friction pair through the main oil passage, the transverse oil passage 21 and the internal flow passage 51 in the connecting piece 5 in sequence, thereby playing roles of lubricating and cooling.
Because the transverse oil duct 21 is arranged in the rocker arm 2, the structural strength and the fatigue strength of the rocker arm 2 are reduced, and the risk of abnormal fracture of the rocker arm 2 is increased; moreover, machining of the elongated oil passages also increases the production cost of the parts.
SUMMERY OF THE UTILITY MODEL
The utility model provides a valve timing of engine for the valve timing oil circuit that exists among the solution prior art is complicated, rocker structural strength and fatigue strength are not enough, problem with high costs.
The embodiment of the utility model provides a valve actuating mechanism of engine, this valve actuating mechanism include rocking arm axle, suit in a plurality of rocking arms, valve assembly, push rod subassembly, the oil supply unit on the rocking arm axle, wherein:
aiming at each rocker arm in the plurality of rocker arms, connecting pieces are respectively arranged at two ends of each rocker arm, and the two connecting pieces are respectively connected with the valve assembly and the push rod assembly to form a friction pair; a lubricating oil passage is arranged in the connecting piece, an oil inlet hole of the lubricating oil passage is exposed out of the surface of the rocker arm, and an oil outlet hole of the lubricating oil passage is communicated with a contact gap of a corresponding friction pair;
the oil supply device is used for supplying lubricating oil to the oil inlet hole of the lubricating oil channel.
In the embodiment, a transverse oil duct is omitted from the rocker arm, the lubricating oil ducts are respectively arranged in the connecting pieces used for connecting the rocker arm with the valve assembly and the push rod assembly, and the oil inlet holes of the lubricating oil ducts are exposed out of the surface of the rocker arm, so that the oil supply device can directly supply oil to the lubricating oil ducts from the outside of the rocker arm, and the lubricating oil flows into the contact gaps of each friction pair through the lubricating oil ducts to play a role in lubrication; therefore, the structural strength and the fatigue strength of the rocker arm are improved, the oil circuit design of the valve actuating mechanism is simplified, and meanwhile, the processing cost is reduced.
Optionally, the oil inlet hole is disposed toward a top arm of a cylinder head cover of the engine. Therefore, the lubricating oil can flow along the lubricating oil channel under the action of gravity, and the smoothness of the oil channel is ensured.
Optionally, the oil supply device includes an oil supply portion and a plurality of flow guide portions, wherein:
a main oil duct is arranged in the oil supply part, a plurality of oil injection holes are formed in the surface of the oil supply part, and each oil injection hole is communicated with the main oil duct;
the flow guide portion corresponds to the oil inlet holes one by one, the flow guide portion is arranged along the injection direction of the oil injection hole, and the flow guide portion is used for dripping lubricating oil sprayed to the surface from the oil injection hole into the corresponding oil inlet hole.
In the above-mentioned optional embodiment, utilize the oil pressure in the main oil gallery to make lubricating oil spout to the surface of water conservancy diversion portion from the nozzle opening, under the action of gravity, lubricating oil has realized accurate lubricated effect along the surface drippage of water conservancy diversion portion to in the oil feed hole that corresponds.
Optionally, the flow guide portion includes at least one blocking surface, and each blocking surface corresponds to at least one oil injection hole;
the flow guide portion further includes a tip end disposed toward the oil inlet hole, the tip end being configured to collect the lubricating oil sprayed onto the at least one blocking surface.
Optionally, the oil inlet hole is a tapered hole or a stepped hole.
In the above alternative embodiment, the tapered hole and the stepped hole may increase the opening area to receive more lubricant.
Optionally, the flow guide part is a plate-shaped structure with end corners.
Optionally, the oil supply part is a rocker shaft or a cylinder cover.
Optionally, the flow guide part is fixed on the top wall of the cylinder head cover.
Optionally, the flow guide part is fixedly connected with a reinforcing rib arranged on the top wall of the cylinder head cover;
or the flow guide part and a reinforcing rib arranged on the top wall of the cylinder head cover are of an integral structure.
Optionally, the connecting piece is an adjusting stud or a ball pin.
Drawings
For a better understanding of the invention, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may be arranged differently as is known in the art. Further, in the drawings, like reference characters designate the same or similar parts throughout the several views.
FIG. 1 is a cross-sectional view of a prior art valve train;
fig. 2 is a cross-sectional view of a valve train provided in an embodiment of the present invention;
fig. 3 is a side view of a valve train according to an embodiment of the present invention.
Reference numerals:
the prior art is as follows:
1-rocker shaft 2-rocker arm 201-transverse oil passage
3-valve bridge 4-push rod 5-connecting piece
The application:
10-rocker shaft 20-rocker arm 30-valve assembly 40-push rod assembly
50-connecting piece 501-lubricating oil way 502-oil inlet hole
50 a-first connector 50 b-second connector
60-cylinder head cover 70-flow guide part 701-blocking surface 702-tip
Detailed Description
The utility model provides a valve timing of engine for the valve timing oil circuit that exists among the solution prior art is complicated, rocker structural strength and fatigue strength are not enough, problem with high costs.
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 2, the valve train includes a rocker shaft 10, a plurality of rocker arms 20 sleeved on the rocker shaft 10, a valve assembly 30, a push rod assembly 40, and an oil supply device, wherein:
for each rocker arm 20 in the plurality of rocker arms 20, two ends of the rocker arm 20 are respectively provided with a connecting piece 50, and the two connecting pieces 50 are respectively connected with the valve assembly 30 and the push rod assembly 40 and form a friction pair; a lubricating oil channel 501 is arranged in the connecting piece 50, the lubricating oil channel 501 penetrates through the connecting piece 50, an oil inlet hole 502 of the lubricating oil channel 501 is exposed out of the surface of the rocker arm 20, and an oil outlet hole of the lubricating oil channel 501 is communicated with a contact gap of a corresponding friction pair;
the oil supply device is used for supplying lubricating oil to the oil inlet hole 502 of the lubricating oil.
Specifically, the connecting member 50 may be an adjusting bolt or a ball pin.
For convenience of description, the link 50 for connection with the valve assembly 30 is referred to as a first link 50a, and the link 50 for connection with the push rod assembly 40 is referred to as a second link 50 b. In the embodiment of the present invention, the first connecting member 50a is an adjusting bolt, and the second connecting member 50b is a ball pin.
Friction pairs are formed between the first connecting piece 50a and the valve assembly 30 and between the second connecting piece 50b and the push rod assembly 40, and the friction pairs refer to a system formed by two objects which are in direct contact and generate relative friction motion; in order to provide lubricating oil into the contact clearance between the friction pairs, in the present application, the two connecting pieces 50 are respectively provided with a lubricating oil channel 501, the lubricating oil channel 501 penetrates through the connecting piece 50, the oil inlet hole 502 of the lubricating oil channel 501 is exposed from the surface of the rocker arm 20, and the oil outlet hole of the lubricating oil channel 501 is communicated with the contact clearance of the corresponding friction pair, so that the lubricating oil channel 501 can be supplied with oil from the outside of the rocker arm 20, and the lubricating oil enters the inside of the connecting piece 50 from the oil inlet hole 502 and flows into the contact clearance of the friction pair along the lubricating oil channel 501 through an oil supply device.
In the valve actuating mechanism, a transverse oil passage is omitted from the interior of the rocker arm 20, the lubricating oil passages 501 are respectively arranged in the connecting piece 50, which is used for connecting the rocker arm 20 with the valve assembly 30 and the push rod assembly 40, and the oil inlet holes 502 of the lubricating oil passages 501 are exposed out of the surface of the rocker arm 20, so that an oil supply device can directly supply oil for the lubricating oil passages 501 from the exterior of the rocker arm 20, the oil passage of the valve actuating mechanism is simplified, the structural strength and the fatigue strength of the rocker arm 20 are improved, and meanwhile, the processing cost is reduced.
When the lubricating oil channel 501 is specifically arranged, the oil inlet hole 502 of the lubricating oil channel 501 is arranged towards the top wall of the cylinder head cover 60 of the engine, so that the lubricating oil can flow downwards along the lubricating oil channel 501 under the action of gravity, and the smoothness of the oil channel is ensured. As can be seen from fig. 2 and the matching relationship between the components, the valve assembly 30 and the push rod assembly 40 are both located below the rocker arm 20, the connecting member 50 plays a role in connecting between the rocker arm 20 and the valve assembly 30 and between the rocker arm 20 and the push rod assembly 40, the lubricating oil passage 501 inside the connecting member 50 is a vertical oil passage, that is, the lubricating oil passage 501 runs through the length direction of the connecting member 50, so that the lubricating oil directly enters the inside from the oil inlet 502 of the vertical oil passage and flows into the clearance of each friction pair under the action of gravity, and no additional power drive is required. Preferably, the oil passage 501 is provided along the axis of the connection member 50.
It will be appreciated that during operation of the engine, the rocker arm 20 will oscillate relative to the rocker shaft 10 and the link 50 will move therewith, where "vertical oil passage" is not intended to be a vertical oil passage in an absolute sense.
Further, the oil supply device includes an oil supply portion and a plurality of flow guide portions 70, wherein:
a main oil gallery (not shown) is arranged in the oil supply part, and a plurality of oil injection holes (not shown) are arranged on the surface of the oil supply part, and each oil injection hole is communicated with the main oil gallery;
the flow guide portions 70 correspond to the oil inlet holes 502 one to one, the flow guide portions 70 are arranged along the injection direction of the oil injection hole, and the flow guide portions 70 are used for dripping lubricating oil sprayed to the surface from the oil injection hole into the corresponding oil inlet holes 502.
In the valve train, the oil pressure in the main oil gallery is utilized to spray the lubricating oil from the oil injection hole to the surface of the flow guide part 70, and the lubricating oil drops into the corresponding oil inlet hole 502 along the surface of the flow guide part 70 under the action of gravity.
Wherein, the oil supply part can be a rocker shaft 10 or a cylinder cover; preferably, the oil supply part is the rocker shaft 10, and the oil pressure inside the rocker shaft 10 is high, so that the lubricating oil can be sprayed out of the oil spray hole at a certain speed and reaches the surface of the flow guide part 70; and the position of the oil spray hole is easy to select, and the machining process is simple. The main oil gallery inside the rocker arm shaft 10 is used for providing lubricating oil for the oil injection hole and also used for providing lubricating oil for the contact surface gap between the rocker arm shaft 10 and the rocker arm 20, and the lubricating and cooling functions are achieved.
The oil injection holes inject the lubricating oil toward the corresponding guide portions 70, and the specific injection direction of the oil injection holes needs to be set according to the positions of the guide portions 70, which is not limited herein.
The flow guide part 70 is located above the oil inlet hole 502 and corresponds to the oil inlet hole 502 one to one, and the flow guide part 70 is used for dripping lubricating oil sprayed to the surface of the oil spray hole from the oil spray hole into the oil inlet hole 502 below, so that the accurate lubricating effect is realized.
For each flow guiding part 70, the flow guiding part 70 is arranged in the injection direction of the oil injection hole, the flow guiding part 70 may correspond to one oil injection hole, or correspond to a plurality of oil injection holes, in other words, only one oil injection hole may be aligned with the flow guiding part 70 to inject the lubricating oil, or a plurality of injection holes may be aligned with the flow guiding part 70 to inject the lubricating oil at the same time, the lubricating oil injected from the oil injection hole reaches the surface of the flow guiding part 70, and then flows downward under the influence of the self gravity, and the lubricating oil gradually collects at the bottom of the flow guiding part 70 until the lubricating oil is separated from the flow guiding part 70 and drops into the oil inlet hole 502.
In the using process, the oil amount dropped to the oil inlet 502 through the flow guide part 70 can be adjusted by increasing/decreasing the aperture of the oil injection hole, the injection speed and the like; alternatively, the amount of oil entering the oil inlet hole 502 may also be increased by increasing/decreasing the number of oil injection holes corresponding to the flow guide portion 70.
Specifically, the flow guide portion 70 includes at least one blocking surface 701, and each blocking surface 701 corresponds to at least one oil injection hole;
the flow guide 70 further includes a tip 702 disposed toward the oil inlet hole 502, the tip 702 for collecting the lubricating oil sprayed onto the at least one blocking surface 701.
Preferably, the blocking surface 701 is arranged in the vertical direction, so that the lubricating oil sprayed from the oil spray hole is obviously influenced by the action of gravity; or, the blocking surface 701 is arranged along an axis perpendicular to the oil injection hole, so that the lubricating oil injected from the oil injection hole collides with the blocking surface 701 in the front; the blocking surface 701 may also be provided in other forms, and may be integrally arranged according to the requirement and the internal structure, which is not limited herein.
The blocking face 701 may also be provided with a plurality of drainage slots, the ends of which are directed towards the tip 702, so as to direct lubricating oil sprayed onto the blocking face 701 onto the tip 702.
The shape of the tip 702 is not particularly limited, and the tip 702 may be formed by intersecting a plurality of planes or may be surrounded by a curved surface.
For example, the flow guide portion 70 includes a blocking surface 701, the blocking surface 701 corresponds to an oil injection hole, the lubricating oil injected from the oil injection hole flows downwards to the position of the tip 702 along the blocking surface 701 under the action of gravity after being blocked by the blocking surface 701, and is collected at the tip 702, and when oil drops attached to the position of the tip 702 cannot overcome the self gravity, the oil drops drop out of the tip 702 and drop into the oil inlet hole 502.
For another example, the baffle plate includes a plurality of blocking surfaces 701, each blocking surface 701 corresponds to one oil injection hole, the lubricating oil injected from each oil injection hole flows downwards to the position of the tip 702 along the blocking surface 701 under the action of gravity after being blocked by the blocking surface 701, and is collected at the tip 702, and when oil drops attached to the position of the tip 702 cannot overcome the self gravity, the oil drops are dropped into the oil inlet hole 502 by separating from the tip 702.
The flow guiding part 70 has a plate-shaped structure with end corners, wherein one end corner forms the tip 702, and the plate-shaped structure can be a polygonal structure such as a triangle, a quadrangle and the like, and can also be other irregular shapes.
Alternatively, the flow guide portion 70 may have a cone-shaped structure such as a cone, a triangular pyramid, or a rectangular pyramid, and the tip of the cone-shaped structure forms the tip 702.
Refer to fig. 2, fig. 3 together, the embodiment of the utility model provides an in which the guiding part 70 is triangle-shaped's plate-shaped structure, this guiding part 70's simple structure, and the surface area that blocks face 701 is great, and it is low to the injection accuracy requirement of lubricating oil, has reduced the technology degree of difficulty of processing the nozzle opening in the oil feeding portion.
The flow guide 70 may be fixed to the top wall of the cylinder head cover 60, or may be fixed to another structural member that does not move relative to the oil supply portion. Preferably, the flow guide 70 is fixed to the top wall of the cylinder head cover 60, and the flow guide 70 is located above the oil inlet hole 502.
Specifically, the flow guide part 70 is fixedly connected with a reinforcing rib arranged on the top wall of the cylinder head cover 60;
alternatively, the air guide portion 70 is integrally formed with a rib provided on the top wall of the head cover 60.
It can be understood that, during the use process, the two ends of the rocker arm 20 provided with the connecting element 50 will move up and down under the pushing action of the push rod assembly 40, the oil inlet hole 502 of the connecting element 50 will also generate micro-motion, the movement amplitude of the oil inlet hole 502 relative to the flow guide part 70 is small, and the lubricating oil dropping from the flow guide part 70 can still be received during the movement process.
Preferably, the oil inlet hole 502 may be a tapered hole or a stepped hole. The tapered hole and the stepped hole can increase the opening area to receive more lubricating oil. Preferably, the oil inlet 502 is a tapered hole, which has a simple processing process except for a large opening area, and the inner surface of the tapered hole is an inclined surface, which can accelerate the flow of the lubricating oil.
In order to more clearly understand the oil circuit design of the valve train provided by the present invention, a rocker arm 20 is specifically described as an example:
as shown in fig. 2 and 3, the rocker arm 20 is sleeved on the rocker shaft 10, and is connected to the valve assembly 30 through a first connecting member 50, and is connected to the push rod assembly 40 through a second connecting member 50.
Specifically, the first connecting piece 50a adopts an adjusting bolt, and the second connecting piece 50b adopts a ball pin; the first and second connectors 50a and 50b are respectively provided therein with an oil passage 501, and an oil inlet hole 502 of the oil passage 501 is disposed toward the top wall of the cylinder head cover 60.
The top wall of the cylinder head cover 60 is provided with two flow guiding parts 70, and the two flow guiding parts 70 correspond to the first connecting piece 50a and the second connecting piece 50b one by one; the guide part 70 is formed in a triangular plate-shaped structure, one side surface of the plate-shaped structure is disposed along the injection direction of the oil injection hole to block the injected lubricating oil, and one end angle of the lowest position of the plate-shaped structure is located above the oil inlet hole 502.
The rocker shaft 10 is provided with a main oil gallery and oil injection holes corresponding to the two flow guide parts 70 one by one, the oil injection holes are used for injecting lubricating oil to the surfaces of the flow guide parts 70, and the lubricating oil flows downwards under the action of gravity on the surfaces of the flow guide parts 70 and drops into the corresponding oil inlet holes 502; after entering the oil inlet hole 502, the lubricating oil flows into the contact gaps of the friction pairs along the lubricating oil passage 501.
Through the description, in the application, the transverse oil duct is not arranged in the rocker arm, the lubricating oil ducts are respectively arranged in the connecting piece, connected with the valve assembly and the push rod assembly, of the rocker arm, and the oil inlet holes of the lubricating oil ducts are exposed out of the surface of the rocker arm, so that the oil supply device can supply oil for the lubricating oil ducts from the outside of the rocker arm, the oil path of the valve actuating mechanism is simplified, the structural strength and the fatigue strength of the rocker arm are improved, and meanwhile, the processing cost is reduced.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The valve actuating mechanism of the engine is characterized by comprising a rocker shaft, a rocker arm sleeved on the rocker shaft, a valve assembly, a push rod assembly and an oil supply device, wherein:
two ends of the rocker arm are respectively provided with a connecting piece, and the two connecting pieces are respectively connected with the valve assembly and the push rod assembly to form a friction pair; a lubricating oil passage is arranged in the connecting piece, the lubricating oil passage penetrates through the connecting piece, an oil inlet hole of the lubricating oil passage is exposed out of the surface of the rocker arm, and an oil outlet hole of the lubricating oil passage is communicated with a contact gap of a corresponding friction pair;
the oil supply device is used for supplying lubricating oil to the oil inlet hole of the lubricating oil channel.
2. The valve gear of the engine according to claim 1, wherein the oil inlet hole is provided toward a top wall of a cylinder head cover of the engine.
3. The valve gear of the engine according to claim 2, wherein the oil supply device includes an oil supply portion and a plurality of flow guide portions, wherein:
a main oil duct is arranged in the oil supply part, a plurality of oil injection holes are formed in the surface of the oil supply part, and each oil injection hole is communicated with the main oil duct;
the flow guide portion corresponds to the oil inlet holes one by one, the flow guide portion is arranged along the injection direction of the oil injection hole, and the flow guide portion is used for dripping lubricating oil sprayed to the surface from the oil injection hole into the corresponding oil inlet hole.
4. The valve train of the engine according to claim 3, wherein the flow guide portion includes at least one blocking surface, each blocking surface corresponding to at least one fuel injection hole;
the flow guide portion further includes a tip end disposed toward the oil inlet hole, the tip end being configured to collect the lubricating oil sprayed onto the at least one blocking surface.
5. A valve gear according to any one of claims 1 to 4, wherein the oil inlet hole is a tapered hole or a stepped hole.
6. A valve train according to claim 3 or 4, wherein the flow guide is a plate-like structure having end corners.
7. A valve gear according to any one of claims 2 to 4 wherein the oil supply portion is a rocker shaft or a cylinder head.
8. The valve gear of the engine according to claim 3, wherein the flow guide portion is fixed to a top wall of the cylinder head cover.
9. The valve gear of the engine according to claim 8, wherein the flow guide portion is fixedly connected with a reinforcing rib provided on a top wall of the cylinder head cover;
or the flow guide part and a reinforcing rib arranged on the top wall of the cylinder head cover are of an integral structure.
10. The valve train of the engine of claim 1 wherein the connector is an adjusting stud or a ball pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022605796.7U CN214007261U (en) | 2020-11-11 | 2020-11-11 | Valve mechanism of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022605796.7U CN214007261U (en) | 2020-11-11 | 2020-11-11 | Valve mechanism of engine |
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| Publication Number | Publication Date |
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| CN214007261U true CN214007261U (en) | 2021-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022605796.7U Active CN214007261U (en) | 2020-11-11 | 2020-11-11 | Valve mechanism of engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635784A (en) * | 2022-04-27 | 2022-06-17 | 安徽全柴动力股份有限公司 | Lubricating oil channel structure of diesel engine supercharger and diesel engine |
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2020
- 2020-11-11 CN CN202022605796.7U patent/CN214007261U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635784A (en) * | 2022-04-27 | 2022-06-17 | 安徽全柴动力股份有限公司 | Lubricating oil channel structure of diesel engine supercharger and diesel engine |
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