CN111305925A - Variable displacement engine oil pump control system with pressure safety protection - Google Patents
Variable displacement engine oil pump control system with pressure safety protection Download PDFInfo
- Publication number
- CN111305925A CN111305925A CN202010334089.0A CN202010334089A CN111305925A CN 111305925 A CN111305925 A CN 111305925A CN 202010334089 A CN202010334089 A CN 202010334089A CN 111305925 A CN111305925 A CN 111305925A
- Authority
- CN
- China
- Prior art keywords
- variable displacement
- pressure
- oil
- pump
- safety protection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/16—Controlling lubricant pressure or quantity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/18—Indicating or safety devices
- F01M1/20—Indicating or safety devices concerning lubricant pressure
Abstract
The invention provides a variable displacement oil pump control system with pressure safety protection, which comprises a variable displacement pump, a pump outlet, a main oil channel and an oil pan, wherein the variable displacement pump comprises a pump body, a feedback oil cavity, a proportional electromagnetic valve and a mechanical regulating valve, the proportional electromagnetic valve is provided with a safety protection spring, a port P and a port A, two branches are divided from the main oil channel, one branch is connected to the port P of the proportional electromagnetic valve, the other branch is connected to the mechanical regulating valve, the port A of the proportional electromagnetic valve is communicated with a variable feedback cavity of the variable displacement pump, an oil outlet of the mechanical regulating valve is communicated to the oil pan, and the opening pressure of the mechanical regulating valve is equal to or lower than the. By adopting the technical scheme, when the duty ratio is 0, the pressure of the main oil duct is close to the safe pressure of the proportional solenoid valve along with the rise of the rotating speed, at the moment, the mechanical regulating valve is opened, and the pressure is relieved through the mechanical regulating valve, so that the pressure is stabilized below the safe pressure, and the safety protection of the proportional solenoid valve is realized.
Description
Technical Field
The invention relates to a lubricating system of an internal combustion engine, in particular to a control system of a variable displacement engine oil pump.
Background
The proportional solenoid valve of the variable displacement oil pump needs to set safety protection pressure, and the pressure of the main oil duct cannot exceed the safety protection pressure under any working condition and duty ratio so as to ensure the normal work and reliability of the system. A safety protection spring is arranged in the proportional solenoid valve, and when the solenoid valve is not electrified, the pressure of the connection between the port P and the port A is the safety protection pressure. After the electromagnetic valve is electrified, the electromagnetic force is changed by adjusting the duty ratio, the pressure attached to the spring is adjusted, and the rigidity of the spring is changed equivalently, so that different variable pressures are realized.
When the duty ratio is more than 0-100%, the rigidity of the safety protection spring is reduced, when the oil pump is raised to a certain rotating speed, the port P and the port A of the electromagnetic valve are communicated, the sliding block is pushed through the feedback oil cavity to compress the variable spring, variable is started, meanwhile, the pressure is kept stable, and at the moment, the pressure of the main oil duct cannot reach the safety protection pressure of the electromagnetic valve.
When the duty ratio is 0 (namely the electromagnetic valve is not electrified), the safety pressure is reached, the electromagnetic valve is communicated with the variable cavity of the oil pump, and the variable displacement is started. However, in practice, the actual pump variable pressure greatly exceeds the safety pressure set by the proportional solenoid valve because the oil pressure inside the pump generates a reaction force to prevent the feedback oil from pushing the slider variable. For example, the safety pressure of the proportional solenoid valve is 6.2bar, and the variable is started only when the oil pump actually reaches 7-8 bar. Exceeding the safety pressure of the proportional solenoid valve shortens the service life of the proportional solenoid valve and reduces the reliability.
Because the internal oil pressure resistance of the oil pump cannot be completely eliminated, when the duty ratio is 0, the variable pressure at the beginning of the oil pump is higher than the safety pressure of the proportional solenoid valve, and the phenomenon cannot be completely avoided.
Disclosure of Invention
The invention aims to provide a variable displacement oil pump control system with pressure safety protection.
In order to solve the technical problems, the technical scheme of the invention is as follows: the variable displacement oil pump control system with pressure safety protection comprises a variable displacement pump, a pump outlet, a main oil channel and an oil pan, wherein the variable displacement pump comprises a pump body, a rotor, a sliding block, a variable spring, a feedback oil cavity and a proportional solenoid valve, the proportional solenoid valve is provided with a safety protection spring, a port P and a port A, the control system further comprises a mechanical regulating valve, two branches are divided from the main oil channel, one branch is connected to the port P of the proportional solenoid valve, the other branch is connected to the mechanical regulating valve, the port A of the proportional solenoid valve is communicated with the variable feedback cavity of the variable displacement pump, an oil outlet of the mechanical regulating valve is communicated to the oil pan, and the opening pressure of the mechanical regulating valve is equal to or lower than the safety pressure.
By adopting the technical scheme, when the duty ratio is 0, the pressure of the main oil duct is close to the safe pressure of the proportional solenoid valve along with the rise of the rotating speed, at the moment, the mechanical regulating valve is opened, and the pressure is relieved through the mechanical regulating valve, so that the pressure is stabilized below the safe pressure, and the safety protection of the proportional solenoid valve is realized.
Preferably, the proportional solenoid valve is integrated on the pump body of the variable displacement pump.
Preferably, the mechanical regulating valve is integrated on the pump body of the variable displacement pump.
Wherein, install cooler and filter on the main oil gallery.
Drawings
FIG. 1 is a schematic structural diagram of a control system according to an embodiment of the present invention;
the reference signs are:
1-variable displacement pump 2-pump outlet 3-main oil gallery
4-main oil duct shell 5-proportional electromagnetic valve 6-mechanical regulating valve
10-feedback oil chamber.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or interconnected between two elements, directly or indirectly through intervening media, and the specific meaning of the terms may be understood by those skilled in the art according to their specific situation.
As shown in fig. 1, the preferred embodiment of the present invention is: a variable displacement oil pump control system with pressure safety protection comprises a variable displacement pump 1, a pump outlet 2, a main oil gallery 3 and an oil sump 4, wherein the variable displacement pump 1 comprises a pump body, a rotor, a sliding block, a variable spring and a feedback oil cavity 10, a proportional electromagnetic valve 5 and a mechanical regulating valve 6 are arranged on the pump body, and the proportional electromagnetic valve 5 is provided with a safety protection spring, a port P and a port A; the main oil gallery 3 is provided with a cooler and a filter, two branches are additionally branched from the main oil gallery 3 behind the cooler and the filter, one branch is connected to a port P of the proportional solenoid valve 5, the other branch is connected to an oil inlet of the mechanical regulating valve 6, a port A of the proportional solenoid valve 5 is communicated with a variable feedback cavity 10 of the variable displacement pump 1, an oil outlet of the mechanical regulating valve 6 is communicated to the oil pan 4, and the opening pressure of the mechanical regulating valve 6 is equal to or lower than the safety pressure of the proportional solenoid valve 5.
In the above embodiment, when the duty ratio is 0, as the rotation speed increases, the pressure of the main oil gallery 3 approaches the safety pressure of the proportional solenoid valve 5, and at this time, the mechanical regulating valve 6 is opened, and the pressure is released through the mechanical regulating valve 6, so that the pressure is stabilized below the safety pressure, and the safety protection of the proportional solenoid valve 5 is realized.
The above embodiments are preferred implementations of the present invention, and the present invention can be implemented in other ways without departing from the spirit of the present invention.
Some of the drawings and descriptions of the present invention have been simplified to facilitate the understanding of the improvements over the prior art by those skilled in the art, and some other elements have been omitted from this document for the sake of clarity, and it should be appreciated by those skilled in the art that such omitted elements may also constitute the subject matter of the present invention.
Claims (4)
1. A variable displacement oil pump control system with pressure safety protection comprises a variable displacement pump (1), a pump outlet (2), a main oil gallery (3) and an oil pan (4), wherein the variable displacement pump (1) comprises a pump body, a rotor, a sliding block, a variable spring, a feedback oil cavity (10) and a proportional electromagnetic valve (5), the proportional electromagnetic valve (5) is provided with a safety protection spring, a port P and a port A, and the variable displacement oil pump control system is characterized in that: the control system further comprises a mechanical regulating valve (6), two branches are branched from the main oil gallery (3), one branch is connected to a P port of the proportional solenoid valve (5), the other branch is connected to the mechanical regulating valve (6), a port A of the proportional solenoid valve (5) is communicated with a variable feedback cavity (10) of the variable displacement pump (1), an oil outlet of the mechanical regulating valve (6) is communicated to an oil sump (4), and the opening pressure of the mechanical regulating valve (6) is equal to or lower than the safety pressure of the proportional solenoid valve.
2. The variable displacement oil pump control system with pressure safety protection of claim 1, wherein: the proportional solenoid valve (5) is integrated on the pump body of the variable displacement pump (1).
3. A variable displacement oil pump control system with pressure safety protection according to claim 1 or 2, characterized in that: the mechanical control valve (6) is integrated on the pump body of the variable displacement pump (1).
4. A variable displacement oil pump control system with pressure safety protection according to claim 1 or 2, characterized in that: and a cooler and a filter are arranged on the main oil duct (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010334089.0A CN111305925A (en) | 2020-04-24 | 2020-04-24 | Variable displacement engine oil pump control system with pressure safety protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010334089.0A CN111305925A (en) | 2020-04-24 | 2020-04-24 | Variable displacement engine oil pump control system with pressure safety protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111305925A true CN111305925A (en) | 2020-06-19 |
Family
ID=71150196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010334089.0A Pending CN111305925A (en) | 2020-04-24 | 2020-04-24 | Variable displacement engine oil pump control system with pressure safety protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111305925A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360589A (en) * | 2020-11-17 | 2021-02-12 | 湖南机油泵股份有限公司 | Full-variable displacement oil pump integrated with safety valve functional slide block |
| CN112682679A (en) * | 2021-01-25 | 2021-04-20 | 湖南机油泵股份有限公司 | Variable displacement oil pump capable of avoiding interference |
| CN114294071A (en) * | 2022-01-08 | 2022-04-08 | 湖南机油泵股份有限公司 | Full variable displacement oil pump of commercial car |
-
2020
- 2020-04-24 CN CN202010334089.0A patent/CN111305925A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360589A (en) * | 2020-11-17 | 2021-02-12 | 湖南机油泵股份有限公司 | Full-variable displacement oil pump integrated with safety valve functional slide block |
| CN112682679A (en) * | 2021-01-25 | 2021-04-20 | 湖南机油泵股份有限公司 | Variable displacement oil pump capable of avoiding interference |
| CN112682679B (en) * | 2021-01-25 | 2022-03-11 | 湖南机油泵股份有限公司 | Variable displacement oil pump capable of avoiding interference |
| CN114294071A (en) * | 2022-01-08 | 2022-04-08 | 湖南机油泵股份有限公司 | Full variable displacement oil pump of commercial car |
| CN114294071B (en) * | 2022-01-08 | 2022-11-18 | 湖南机油泵股份有限公司 | Full variable displacement oil pump of commercial car |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111305925A (en) | Variable displacement engine oil pump control system with pressure safety protection | |
| EP1945920B1 (en) | Lubrication system and internal combustion engine comprising such a system | |
| US7549848B2 (en) | Device for adjusting the pumping capacity of a lubricant pump for an internal combustion engine | |
| EP1803933B1 (en) | High-pressure pump for a fuel, with sump in communication with the fuel inlet | |
| US9534519B2 (en) | Variable displacement vane pump with integrated fail safe function | |
| US5887572A (en) | Pressure and temperature control for fuel delivery systems | |
| US9103307B2 (en) | High-pressure pump arrangement | |
| JP2003515701A (en) | Valve system for controlling the fuel introduction pressure in the high-pressure pump | |
| EP0391064A1 (en) | Intake valve for vacuum compressor | |
| US20160186752A1 (en) | Variable displacement vane pump with integrated fail safe function | |
| US20130343940A1 (en) | Hydraulic feed device and hydraulic system | |
| CN106246351A (en) | Gas turbine oil pump | |
| CN112360589B (en) | Full-variable displacement oil pump integrated with safety valve functional slide block | |
| CN211975098U (en) | Variable displacement engine oil pump control system with pressure safety protection | |
| CN104343601A (en) | Filter head for an exchange or housing filter | |
| US20040208754A1 (en) | Speed regulated oil delivery system | |
| CN212716803U (en) | Voltage stabilization mechanism, engine and vehicle | |
| CN213598033U (en) | Full-variable displacement oil pump integrated with safety valve functional slide block | |
| US20010036413A1 (en) | Speed regulated oil delivery system | |
| CN210509321U (en) | Regulating valve and rotor type oil pump | |
| CN112324534B (en) | Movable supercharged pump outlet control two-stage variable oil pump | |
| KR102084873B1 (en) | Pressure regulating arrangements and methods | |
| CN210178437U (en) | Lubricating system of engine | |
| CN210033818U (en) | Double-acting vane pump control system and gearbox assembly with same | |
| CN220248239U (en) | Two-section oil pressure-adjustable oil pump assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |