Lubricating system of sliding vane rotor internal combustion engine

Abstract

The invention belongs to the technical field of internal combustion engine lubrication, and relates to a lubricating system of a sliding vane rotor internal combustion engine, which comprises an oil pan, an oil pump, an oil filter and a main oil pipe, the oil pump is directly meshed with a gear at a rotor shaft end through a transmission gear or a chain, and the main oil pipe is communicated with an oil chamber in the oil pan under the driving of rotating power of a rotor shaft; lubricating oil in the oil pan is guided to the main oil pipe, and a pressure sensor is arranged in the main oil pipe and used for monitoring oil supply pressure. And the lubricating system supplies lubricating oil to each lubricating surface through the main oil pipe and each branch oil pipe. According to the lubricating system of the sliding vane rotor internal combustion engine, bearing lubrication, stator sliding vane pair lubrication and rotor sliding vane pair lubrication are designed, and pressure lubrication and lubricating grease lubrication are applied; the lubricating system can effectively lubricate the sliding vane rotor internal combustion engine, auxiliary cooling is achieved while friction of mechanical movement is reduced, the service life of all moving parts is prolonged, fuel economy is improved, and energy waste is reduced.

Description

Technical Field

[0001] This invention belongs to the field of internal combustion engine lubrication technology, and specifically relates to a lubrication system for a vane rotor internal combustion engine. Background Technology

[0002] The engine lubrication system is a crucial component for maintaining normal engine operation. Its primary task is to continuously supply clean, pressurized, and appropriately heated lubricating oil to the friction surfaces of moving parts. This is especially true in vane rotor internal combustion engines, where the speed and power frequency are higher than in conventional automotive engines. The friction between the vanes and the stator inner ring profile, as well as the friction within the rotor grooves, is extremely intense. If the lubrication system design is inadequate, resulting in insufficient lubrication or poor performance, the engine will not receive effective lubrication. This will inevitably lead to a sharp increase in internal frictional negative work, potentially causing vane seizure or even engine shutdown and failure.

[0003] Currently, there is a lack of lubrication systems for vane rotor internal combustion engines. To fill this gap and solve the lubrication problem of vane rotor internal combustion engines, a lubrication system needs to be designed to provide good lubrication for the vane rotor internal combustion engine, reduce friction in mechanical movement, assist in cooling, extend the service life of various moving parts, thereby improving fuel economy and reducing energy waste. Summary of the Invention

[0004] The purpose of this invention is to provide a lubrication system for a vane rotor internal combustion engine to solve the problem of providing adequate and good lubrication for the vane rotor internal combustion engine.

[0005] This invention is achieved through the following technical solution: A lubrication system for a vane rotor internal combustion engine mainly consists of an oil pan 1, an oil pump 2, an oil filter 3, a main oil pipe, and multiple branch oil pipes 4. The oil pump 2 has its inlet end connected to the oil chamber of the oil pan 1, its outlet end connected to the inlet end of the oil filter 3, and its outlet end connected to the main oil pipe. The system supplies lubricating oil from the oil pan 1 to the main oil pipe, and then supplies lubricating oil to various lubrication surfaces through the main oil pipe and the branch oil pipes 4. The branch oil pipe 4 includes multiple end cover bearing oil passages, multiple stator side oil passages, and a rotor shaft end oil passage connected to the main oil pipe. The multiple end cover bearing oil passages are respectively opened at the bearings of the front and rear end covers. The multiple stator side oil passages are respectively connected to multiple oil holes opened on the side of the stator 6. Each oil hole is connected to a stator side oil pipe. The multiple stator side oil pipes converge and connect to the main oil pipe, and oil is supplied uniformly through the main oil pipe. The rotor shaft end oil passage is connected to the oil passage opened inside the rotor shaft 5. Multiple small pinholes are opened on the outer surface of the rotor shaft 5 corresponding to the bottom of each vane groove. The pinhole channels are connected to the internal oil passages of the rotor shaft 5. The lubricating oil flows through the internal oil passages of the rotor shaft 5 through the rotor shaft end oil passages, and then through the small pinholes to perform pressure penetration lubrication between the vanes and the vane grooves on the rotor.

[0006] Furthermore, the oil pump 2 engages with the gear at the end of the rotor shaft 5 via a transmission gear, and is driven by the rotational power of the rotor shaft 5 to connect the main oil pipe with the oil chamber in the oil pan 1, and guide the lubricating oil in the oil pan 1 to the main oil pipe.

[0007] Furthermore, the oil pump 2 directly meshes with the gear at the end of the rotor shaft 5 via a chain, and is driven by the rotational power of the rotor shaft 5 to connect the main oil pipe with the oil chamber in the oil pan 1, and guide the lubricating oil in the oil pan 1 to the main oil pipe.

[0008] Furthermore, the main oil pipe is equipped with an oil pressure sensor for monitoring the oil supply pressure.

[0009] Furthermore, the bearing working surface is equipped with a grease nipple for adding grease.

[0010] Furthermore, the plurality of oil holes can be arranged in a single row or multiple rows of straight lines.

[0011] Furthermore, multiple lubricating oil channels are also provided on the side of the stator 6.

[0012] Furthermore, the lubricant is a mixture of fuel and fully synthetic engine oil, with a volume ratio ranging from 30:1 to 60:1, so that the lubricant can participate in lubrication in the combustion chamber after being mixed in the correct proportion.

[0013] Compared with the prior art, the beneficial effects of the present invention are: This invention provides a lubrication system for a vane rotor internal combustion engine, including an oil pan, an oil pump, an oil filter, and a main oil pipe. The oil pump directly meshes with a gear at the rotor shaft end via a transmission gear or chain, driven by the rotational power of the rotor shaft. This drives the main oil pipe to connect to the oil chamber within the oil pan, guiding the lubricating oil from the oil pan to the main oil pipe. A pressure sensor is installed in the main oil pipe, supplying lubricating oil to various lubrication surfaces through the main oil pipe and branch oil pipes. This invention features ingenious designs for bearing lubrication, stator vane pair lubrication, and rotor vane pair lubrication, applying both pressure lubrication and grease lubrication. This lubrication system effectively lubricates the vane rotor internal combustion engine, reducing friction during mechanical movement while aiding cooling, extending the service life of moving parts, improving fuel economy, and reducing energy waste. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a general structural diagram of the lubrication system of the sliding vane rotor internal combustion engine of the present invention; Figure 2 Schematic diagram of the pinhole lubrication structure of the rotor vane pair; Figure 3 This is a schematic diagram of engine oil mixing.

[0016] Figure 4 This is a schematic diagram of the lubrication system mechanism.

[0017] In the diagram, 1. Oil pan 2. Oil pump 3. Oil filter 4. Oil distribution pipe 5. Rotor shaft 6. Stator. Detailed Implementation

[0018] The present invention will be further described below with reference to embodiments: The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0019] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this invention, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0020] like Figure 1 and Figure 4 As shown, the lubrication system of the vane rotor internal combustion engine of the present invention mainly consists of an oil pan 1, an oil pump 2, an oil filter 3, a main oil pipe, and multiple branch oil pipes 4.

[0021] The oil pump 2 has its inlet end connected to the oil chamber of the oil pan 1, and its outlet end connected to the inlet end of the oil filter 3. The outlet end of the oil filter 3 is connected to the main oil pipe, supplying the lubricating oil in the oil pan 1 to the main oil pipe. The lubricating oil is then supplied to various lubrication surfaces through the main oil pipe and the branch oil pipes 4. Each lubrication surface includes the stator side, the rotor shaft end, and the end cover bearing.

[0022] Specifically, the oil pump 2 directly meshes with the gear at the end of the rotor shaft 5 through a transmission gear or chain, and is driven by the rotational power of the rotor shaft 5 to connect the main oil pipe with the oil chamber in the oil pan 1, and guide the lubricating oil in the oil pan 1 to the main oil pipe.

[0023] The main oil pipe is equipped with an oil pressure sensor to monitor the oil supply pressure.

[0024] The branch oil pipe 4 includes multiple end cover bearing oil lines, multiple stator side oil lines, and rotor shaft end oil lines that are connected to the main oil pipe. The number of each oil line is designed to match the size of each component and the working conditions.

[0025] The multiple end cap bearing oil passages are respectively opened at the bearings of the front and rear end caps, and the working surface of the bearing is equipped with a grease nipple for adding grease.

[0026] The multiple stator side oil passages are connected to multiple oil holes formed on the side of the stator 6, and each oil hole is connected to a stator side oil pipe. The multiple stator side oil pipes converge and connect to the main oil pipe, which supplies oil uniformly. The multiple oil holes can be arranged in a single row or multiple rows of straight lines. Multiple lubrication oil passages are also formed on the side of the stator 6 to realize the oil circuit.

[0027] In this invention, the lubricating oil is a mixture of fuel oil and fully synthetic engine oil, with a volume ratio ranging from 30:1 to 60:1. The lubricating oil can participate in lubrication in the combustion chamber after being mixed in the correct proportion.

[0028] The oil passage at the rotor shaft end is connected to the oil channel inside the rotor shaft 5. Multiple small pinholes are opened on the outer surface of the rotor shaft 5 corresponding to the bottom of each vane groove. The pinholes need to be evenly distributed in the axial direction of the entire rotor. The pinhole channels are connected to the internal oil channel of the rotor shaft 5. The lubricating oil flows through the oil passage at the rotor shaft end and through the internal oil channel of the rotor shaft 5, and then through the small pinholes to perform pressure penetration lubrication between the vane and the vane groove on the rotor.

[0029] The present invention designs the lubrication of bearings, stator vane pairs, and rotor vane pairs as follows: For bearing lubrication, a combination of pressure lubrication and grease lubrication is used. Oil passages are opened at the bearings of the front and rear end caps and connected to the main oil pipe. At the same time, grease lubrication is applied to the working surface of the bearing through grease nipples.

[0030] Regarding the lubrication of the stator 6 and the sliding vanes, multiple oil holes and corresponding lubrication channels are provided on the inner wall of the stator 6. The oil holes on the inner wall of the stator 6 can be arranged in a single row or multiple rows of curves, and the distribution curve of the oil holes must be consistent with the profile of the inner wall of the stator 6. Each oil hole is connected to the stator side oil passage, and multiple stator side oil passages converge and connect to the main oil pipe, through which oil is supplied uniformly.

[0031] The lubricant selected is a mixture of fuel and fully synthetic engine oil, with a volume ratio ranging from 30:1 to 60:1. A mixing mode can be used while the internal combustion engine is operating, such as... Figure 3 As shown, fuel and engine oil are mixed in a specific ratio and then flow into the oil pan 1 to participate in lubrication. The lubricating oil ratio can be adjusted in real time under different engine operating conditions. Alternatively, a fixed mixing mode can be used, where a fixed mixture of lubricating oil is added to the oil pan 1 before the engine starts working. The lubricating oil can participate in combustion while lubricating in the working chamber of the vane rotor internal combustion engine, forming a lubrication and combustion mode. At the same time, the process of lubricating oil collection and return is eliminated, meeting the three core requirements of clean combustion, mixed lubrication, and low residue.

[0032] Because fully synthetic motor oils have better high-temperature stability and oxidation resistance than mineral oils, they can adapt to the continuous high-temperature operating conditions of rotary internal combustion engines. Therefore, this invention selects fully synthetic motor oils, and applies those with higher viscosity (SAE 10W-40, 15W-50, etc.), lower ash content, and containing anti-wear additives.

[0033] Regarding the lubrication of the rotor and vanes, an oil passage is opened inside the rotor shaft 5, and an oil circuit is connected to the rotor shaft end outside the rotor shaft 5. The rotor shaft end oil circuit is connected to the internal oil passage. For example... Figure 2As shown, multiple small pinholes are made on the outer surface of the rotor shaft 5 corresponding to the bottom of each sliding vane groove. The holes are connected to the internal oil passages of the rotor shaft 5. The lubricating oil flows through the oil passages at the rotor shaft end and through the internal oil passages of the rotor shaft 5, and then through the small pinholes to perform pressure penetration lubrication between the sliding vane and the sliding vane grooves on the rotor.

[0034] Based on this, the oil pump in the lubrication system of this invention is powered by the sliding vane rotor internal combustion engine itself. For example... Figure 1 As shown in the connection at the oil pump 2, the oil pump 2 can be directly driven by the torque output from the rotor shaft 5 through gear meshing. Specifically, the oil pump 2 can directly mesh with the gear at the end of the rotor shaft 5 through a transmission gear or chain. The rotor shaft 5 drives the oil pump 2 through gear / belt transmission on one side. The rotational power of the rotor shaft 5 drives the oil pump 2, which in turn connects the main oil pipe to the oil chamber in the oil pan 1, guiding the lubricating oil in the oil pan 1 to the main oil pipe, thus forming an oil circulation.

[0035] The above-mentioned lubrication methods can be used individually or in combination.

[0036] The lubrication system of this invention can effectively lubricate the vane rotor internal combustion engine, reduce friction in mechanical motion, assist in cooling, extend the service life of moving parts, improve fuel economy, and reduce energy waste.

[0037] The above description is merely a preferred embodiment of the present invention. Any simple modifications, equivalent changes, and alterations made by those skilled in the art to the above embodiments without departing from the scope of the present invention and based on the technical essence of the present invention shall still fall within the scope of the present invention.

Claims

1. A lubrication system for a vane rotor internal combustion engine, characterized in that: It is mainly composed of an oil pan (1), an oil pump (2), an oil filter (3), a main oil pipe, and multiple branch oil pipes (4); the oil inlet of the oil pump (2) is connected to the oil chamber of the oil pan (1), the oil outlet of the oil pump (2) is connected to the oil inlet of the oil filter (3), and the oil outlet of the oil filter (3) is connected to the main oil pipe, so as to supply the lubricating oil in the oil pan (1) to the main oil pipe, and supply the lubricating oil to each lubrication surface through the main oil pipe and the branch oil pipes (4); The branch oil pipe (4) includes multiple end cap bearing oil passages, multiple stator side oil passages, and rotor shaft end oil passages connected to the main oil pipe. The multiple end cap bearing oil passages are respectively opened at the bearings of the front and rear end caps. The multiple stator side oil passages are respectively connected to multiple oil holes opened on the side of the stator (6). Each oil hole is connected to the stator side oil pipe. The multiple stator side oil pipes converge and connect to the main oil pipe, and oil is supplied uniformly through the main oil pipe. The rotor shaft end oil passage is connected to the oil passage opened inside the rotor shaft (5). Multiple small pinholes are opened on the outer surface of the rotor shaft (5) corresponding to the bottom of each vane groove. The pinhole channels are connected to the internal oil passages of the rotor shaft (5). The lubricating oil flows through the internal oil passages of the rotor shaft (5) through the rotor shaft end oil passage, and then pressure penetration lubrication is performed between the vane and the vane groove on the rotor through the small pinholes.

2. The lubrication system for a vane rotor internal combustion engine according to claim 1, characterized in that: The oil pump (2) meshes with the gear at the end of the rotor shaft (5) through the transmission gear, and is driven by the rotational power of the rotor shaft (5) to connect the main oil pipe with the oil chamber in the oil pan (1) and guide the lubricating oil in the oil pan (1) to the main oil pipe.

3. The lubrication system for a vane rotor internal combustion engine according to claim 1, characterized in that: The oil pump (2) directly meshes with the gear at the end of the rotor shaft (5) via a chain. Driven by the rotational power of the rotor shaft (5), it connects the main oil pipe to the oil chamber in the oil pan (1) and guides the lubricating oil in the oil pan (1) to the main oil pipe.

4. The lubrication system for a vane rotor internal combustion engine according to claim 1, characterized in that: The main oil pipe is equipped with an oil pressure sensor to monitor the oil supply pressure.

5. The lubrication system for a vane rotor internal combustion engine according to claim 1, characterized in that: The bearing working surface is equipped with a grease nipple for adding grease.

6. The lubrication system for a sliding vane rotor internal combustion engine according to claim 1, characterized in that: The multiple oil holes can be arranged in a single row or multiple rows of straight lines.

7. The lubrication system for a vane rotor internal combustion engine according to claim 1, characterized in that: The stator (6) also has multiple lubrication channels on its side.

8. The lubrication system for a vane rotor internal combustion engine according to claim 1, characterized in that: The lubricant is a mixture of fuel and fully synthetic engine oil, with a volume ratio ranging from 30:1 to 60:

1. The lubricant can participate in lubrication in the combustion chamber after being mixed in the correct proportion.

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