CN113464235A - Oil pump becomes row device and engine - Google Patents

Oil pump becomes row device and engine Download PDF

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Publication number
CN113464235A
CN113464235A CN202110667162.0A CN202110667162A CN113464235A CN 113464235 A CN113464235 A CN 113464235A CN 202110667162 A CN202110667162 A CN 202110667162A CN 113464235 A CN113464235 A CN 113464235A
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China
Prior art keywords
oil
oil pump
pump
pressure
engine
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Granted
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CN202110667162.0A
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CN113464235B (en
Inventor
欧阳丹
施发义
刘向晖
向飞
孟成
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Dongfeng Motor Corp
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Dongfeng Motor Corp
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    • 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
    • F01M1/02—Pressure lubrication using lubricating pumps
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

The invention belongs to the technical field of engines and discloses an oil pump variable-displacement device and an engine; the oil pump becomes row device includes: the variable-displacement oil pump, the main oil gallery and the pressure valve; the oil pump oil outlet of the variable oil pump is connected with the main oil duct, and the main oil duct is connected with the feedback oil cavity oil inlet of the feedback oil cavity of the variable oil pump; the oil outlet of the oil pump is connected with the oil inlet of the feedback oil cavity through the pressure valve; and when the pressure value of the oil outlet of the oil pump is greater than the set conduction pressure of the pressure valve, the pressure valve is conducted. The variable-displacement oil pump device and the engine provided by the invention can improve the response timeliness of executing variable-displacement operation.

Description

Oil pump becomes row device and engine
Technical Field
The invention relates to the technical field of oil pumps, in particular to an oil pump variable-displacement device and an engine.
Background
The variable displacement oil pump is widely applied to the field of engines, and pressure oil is led out from a main oil passage to an oil pump feedback oil cavity through a feedback oil passage, and then the pressure oil pushes a sliding block to adjust the eccentricity between the sliding block and an oil pump rotor so as to adjust the displacement of the oil pump. However, in the actual use process, under the conditions of restarting after stopping for a period of time, low-temperature starting and the like, the variable displacement operation response aging of the variable displacement oil pump is slow, and the oil pump runs in the maximum displacement state for a long time, so that the stable operation of the engine is not facilitated.
Disclosure of Invention
The invention provides an oil pump variable displacement device and an engine, and solves the technical problem that in the prior art, the response timeliness of variable displacement operation executed by a variable displacement oil pump is slow.
In order to solve the technical problem, the invention provides an oil pump row changing device, which comprises: the variable-displacement oil pump, the main oil gallery and the pressure valve;
the oil pump oil outlet of the variable oil pump is connected with the main oil duct, and the main oil duct is connected with the feedback oil cavity oil inlet of the feedback oil cavity of the variable oil pump;
the oil outlet of the oil pump is connected with the oil inlet of the feedback oil cavity through the pressure valve;
and when the pressure value of the oil outlet of the oil pump is greater than the set conduction pressure of the pressure valve, the pressure valve is conducted.
Further, the oil pump variable-displacement device further comprises: an oil cooler;
the oil outlet of the oil pump is connected with the main oil gallery through the oil cooler.
Further, the oil pump variable-displacement device further comprises: an oil filter;
the oil outlet of the oil pump is connected with the main oil duct through the oil filter.
Further, the oil pump variable-displacement device further comprises: an oil cooler and an oil filter;
and the oil outlet of the oil pump is connected with the main oil duct sequentially through the oil cooler and the oil filter.
Further, the set communication pressure of the pressure valve is larger than the target pressure of the main oil gallery.
An engine, comprising: the oil pump becomes row device.
Further, the oil pump variable-displacement device further comprises: an oil cooler;
the oil outlet of the oil pump is connected with the main oil gallery through the oil cooler.
Further, the oil pump variable-displacement device further comprises: an oil filter;
the oil outlet of the oil pump is connected with the main oil duct through the oil filter.
Further, the oil pump variable-displacement device further comprises: an oil cooler and an oil filter;
and the oil outlet of the oil pump is connected with the main oil duct sequentially through the oil cooler and the oil filter.
Further, the set communication pressure of the pressure valve is larger than the target pressure of the main oil gallery.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
according to the oil pump variable-displacement device and the engine provided by the embodiment of the application, the branch is arranged at the oil outlet of the variable-displacement oil pump and connected with the oil inlet of the feedback oil cavity of the oil pump, and the pressure valve is arranged to control the on-off state, so that the branch can be automatically conducted under the condition that the hydraulic pressure of the oil outlet of the variable-displacement oil pump is higher than the set conduction pressure of the pressure valve, the oil pump oil outlet of the variable-displacement oil pump is directly communicated with the feedback oil inlet of the feedback oil cavity, the feedback loop can be avoided, the oil pump can be directly fed back to the feedback cavity, the displacement of the oil pump can be adjusted, and the adjustment response of high timeliness can be realized; when the engine oil pump is started at low temperature or for a long time, the variable-displacement operation time of the engine oil pump can be greatly shortened, the high-oil-pressure operation time is reduced, and the stable operation is ensured.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic block diagram of an oil pump variable displacement device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that all the directional indications in the embodiments of the present application are only used to explain the relative position relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.
The following disclosure provides many different embodiments, or examples, for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
The application is described below with reference to specific embodiments in conjunction with the following drawings.
The embodiment of the application solves the technical problem in the prior art by providing the device.
In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the drawings and the specific embodiments of the specification, and it should be understood that the embodiments and specific features of the embodiments of the present invention are detailed descriptions of the technical solutions of the present application, and are not limitations of the technical solutions of the present application, and the technical features of the embodiments and examples of the present application may be combined with each other without conflict.
Referring to fig. 1, an oil pump variable displacement device includes: the variable-displacement oil pump 10, the main gallery 40, and the pressure valve 50.
A feedback oil path is arranged between the variable displacement oil pump 10 and the main oil gallery 40, pressure oil in the main oil gallery 40 is sampled and introduced into a feedback oil cavity 60 arranged in the variable displacement oil pump 10, the pressure oil pushes a slide block in the feedback oil cavity 60, the slide block can act against a spring to adjust the eccentricity of the oil pump, and the displacement of the oil pump is reduced under the condition of large displacement in an initial state, so that the oil pressure of the main oil gallery is reduced to a degree close to the target oil pressure.
However, when the engine is started after being stopped for a period of time, the engine oil in the oil passage of the engine flows back to the oil pan, and after the engine is started, the engine oil firstly needs to fill the oil passage cavity from the outlet of the oil pump to the inlet of the feedback oil passage of the engine oil pump, so that a long time is needed, and particularly when the engine is started at a low temperature, the time for the engine oil to flow into the feedback oil passage of the engine oil pump is longer (the actual measurement on a certain type of engine is more than 10 seconds) because the viscosity of the engine oil is high. When the engine is started at a low temperature, the viscosity of the engine oil is high, the flow resistance of the engine oil is high, and the pressure of the engine oil in the main oil duct of the engine is very high, so that the oil pump is required to reduce the displacement of the oil pump as quickly as possible to reduce the oil pressure in the main oil duct of the engine. The oil pump needs to run in the maximum displacement state for a long time due to the defects, the long-time high oil pressure of the engine is caused, the power consumption of the oil pump is increased, and the leakage of a lubricating oil path of the engine is caused.
For this reason, the present embodiment optimizes the feedback structure, enabling high-aging phase-change row operation under specific conditions.
Specifically, the oil pump outlet 11 of the variable oil drain pump 10 is connected to the main oil gallery 40, and the main oil gallery 40 is connected to a feedback gallery oil inlet 61 of a feedback gallery 60 of the variable oil drain pump 10; as a conventional feedback loop, the variable displacement operation is realized by collecting pressure oil in the main oil gallery 40 in real time to the feedback oil cavity 60 and then pushing the slide block to act under pressure.
In this embodiment, a feedback branch is added on the basis of the conventional feedback loop to cope with high-speed variable-speed operation under special conditions; namely, the oil pump outlet 11 is connected with the feedback oil chamber inlet 61 through the pressure valve 50. When the pressure value of the oil pump oil outlet 11 is greater than the set conduction pressure of the pressure valve 50, the pressure valve 50 is conducted, so that the oil pump oil outlet 11 is communicated with the feedback oil cavity oil inlet 61, pressure oil directly enters the feedback oil cavity 60, the slide block is directly pushed, the eccentricity is changed, and displacement adjustment is achieved. Since the pressure oil avoids the feedback loop, the pressure oil directly enters the feedback oil cavity 60 from the oil outlet 11 of the oil pump, so that the corresponding variable-displacement operation is highly time-efficient.
Realize interim relief through the feedback branch road, to for example long-time shutting down restart, circumstances such as low temperature start, can greatly promote and become row efficiency.
In this embodiment, the oil pump variable displacement device further includes: an oil cooler 20; the oil outlet 11 of the oil pump is connected with the main oil gallery 40 through the oil cooler 20, so that oil cooling is realized.
Similarly, the oil pump variable-displacement device further comprises: an oil filter 30; the oil outlet 11 of the oil pump is connected with the main oil gallery 40 through the oil filter 30, so that oil filtering is realized.
Or, the oil pump variable-displacement device further comprises: an oil cooler 20 and an oil filter 30; the oil pump outlet 11 is connected to the main oil gallery 40 sequentially through the oil cooler 20 and the oil filter 30.
Specifically, in the embodiment, when the engine is started at a low temperature, because the viscosity of the engine oil is high, the flow resistance of the engine oil is high, the pressure at the oil outlet 11 of the engine oil pump is high, and the pressure valve 50 of the newly added oil passage is opened, the engine oil can quickly flow from the position of the oil outlet 11 of the engine oil pump to the feedback oil cavity 60 of the engine oil pump, the displacement of the engine oil pump is quickly reduced, and the oil pressure of the engine is quickly reduced. When the oil pressure of the engine is reduced to a certain limit value, the pressure valve 50 of the newly added oil path is closed, and the feedback oil path is disconnected with the oil outlet 11 of the oil pump. At this time, the main oil gallery 40 of the engine, the oil filter 30 and the oil cooler 20 are filled with oil, and the feedback oil path is communicated to the main oil gallery 40, so that the oil pressure of the main oil gallery 40 of the engine is adjusted by controlling the oil pump displacement through the oil pressure of the main oil gallery 40.
The oil pump displacement can be quickly adjusted to reduce the engine oil pressure when the engine is started at a low temperature, and the oil pump displacement is controlled by switching to the main oil duct 40 oil pressure after the engine is started, so that the engine oil pressure is quickly reduced to the target oil pressure and is kept stable.
Further, the set communication pressure of the pressure valve 50 is larger than the target pressure of the main gallery 40.
The oil outlet 11 of the oil pump is connected to the oil cooler 20 and the oil filter 30 through a section of oil path and then connected to the main oil path 40 of the engine. The oil pump feedback oil path is connected with a main oil path 40 of the engine and a feedback oil chamber oil inlet 61 of the oil pump, a new path of oil path is added to communicate an oil outlet 11 of the oil pump and the feedback oil chamber oil inlet 61 of the oil pump, a pressure valve 50 is arranged on the new path, and the opening pressure of the pressure valve 50 is P1. The target oil pressure of the main oil gallery 40 of the engine is P2, the actual oil pressure of the main oil gallery 40 of the engine is P0, the oil pump is out of oil, the oil pressure of 11 is P3, and P1> P2 is set.
When the engine is started at a low temperature, the oil viscosity of the oil is very high, the oil flow resistance of the oil is large, so that the oil pressure P3 of the oil outlet of the oil pump is very high, the oil pressure P3 of the oil outlet of the oil pump is higher than the opening pressure P1 of the pressure valve, the pressure valve is opened, the newly added oil path is directly communicated with the oil outlet 11 of the oil pump and the oil inlet 61 of the feedback oil cavity of the oil pump, the oil quickly enters the feedback oil cavity 60 of the oil pump, the displacement of the oil pump is reduced, the oil pressure of the oil outlet of the oil pump is reduced, and the pressure valve 50 is closed when the oil pressure P3 is less than P1.
The high oil pressure at the cold start stage influences the tightness of a lubricating system, and the adoption of the invention can quickly reduce the discharge capacity of the oil pump and reduce the oil pressure, and the stability of the oil pressure is not considered at the moment. After the pressure valve 50 is closed, the feedback oil path is disconnected with the oil outlet 11 of the oil pump. At this time, the main oil gallery 40 of the engine, the oil filter 30 and the oil cooler 20 are filled with oil, and the feedback oil path is communicated to the main oil gallery 40, so that the oil pressure of the main oil gallery of the engine is adjusted by controlling the oil pump displacement through the oil pressure of the main oil gallery 40. At this time, the oil pump displacement is controlled by the oil pressure of the main oil gallery 40 of the engine, so that the accuracy of pressure control of the main oil gallery 40 and the stability of the oil pressure can be kept.
The present embodiment also provides an engine including: the oil pump becomes row device.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
according to the oil pump variable-displacement device and the engine provided by the embodiment of the application, the branch is arranged at the oil outlet of the variable-displacement oil pump and connected with the oil inlet of the feedback oil cavity of the oil pump, and the pressure valve is arranged to control the on-off state, so that the branch can be automatically conducted under the condition that the hydraulic pressure of the oil outlet of the variable-displacement oil pump is higher than the set conduction pressure of the pressure valve, the oil pump oil outlet of the variable-displacement oil pump is directly communicated with the feedback oil inlet of the feedback oil cavity, the feedback loop can be avoided, the oil pump can be directly fed back to the feedback cavity, the displacement of the oil pump can be adjusted, and the adjustment response of high timeliness can be realized; when the engine oil pump is started at low temperature or for a long time, the variable-displacement operation time of the engine oil pump can be greatly shortened, the high-oil-pressure operation time is reduced, and the stable operation is ensured.
In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application.
In addition, descriptions in this application as to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.
In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (10)

1. The utility model provides an oil pump becomes row's device which characterized in that includes: the variable-displacement oil pump, the main oil gallery and the pressure valve;
the oil pump oil outlet of the variable oil pump is connected with the main oil duct, and the main oil duct is connected with the feedback oil cavity oil inlet of the feedback oil cavity of the variable oil pump;
the oil outlet of the oil pump is connected with the oil inlet of the feedback oil cavity through the pressure valve;
and when the pressure value of the oil outlet of the oil pump is greater than the set conduction pressure of the pressure valve, the pressure valve is conducted.
2. The oil pump variable displacement apparatus of claim 1, further comprising: an oil cooler;
the oil outlet of the oil pump is connected with the main oil gallery through the oil cooler.
3. The oil pump variable displacement apparatus of claim 1, further comprising: an oil filter;
the oil outlet of the oil pump is connected with the main oil duct through the oil filter.
4. The oil pump variable displacement apparatus of claim 1, further comprising: an oil cooler and an oil filter;
and the oil outlet of the oil pump is connected with the main oil duct sequentially through the oil cooler and the oil filter.
5. The oil pump variable displacement device according to claim 1, wherein a set opening pressure of the pressure valve is larger than a target pressure of the main gallery.
6. An engine, comprising: the oil pump variable displacement device of claim 1.
7. The engine of claim 6, wherein the oil pump displacement device further comprises: an oil cooler;
the oil outlet of the oil pump is connected with the main oil gallery through the oil cooler.
8. The engine of claim 6, wherein the oil pump displacement device further comprises: an oil filter;
the oil outlet of the oil pump is connected with the main oil duct through the oil filter.
9. The engine of claim 6, wherein the oil pump displacement device further comprises: an oil cooler and an oil filter;
and the oil outlet of the oil pump is connected with the main oil duct sequentially through the oil cooler and the oil filter.
10. The engine of claim 6, wherein the set lead-in pressure of the pressure valve is greater than the target pressure of the main gallery.
CN202110667162.0A 2021-06-16 2021-06-16 Oil pump becomes row device and engine Active CN113464235B (en)

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Application Number Priority Date Filing Date Title
CN202110667162.0A CN113464235B (en) 2021-06-16 2021-06-16 Oil pump becomes row device and engine

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Application Number Priority Date Filing Date Title
CN202110667162.0A CN113464235B (en) 2021-06-16 2021-06-16 Oil pump becomes row device and engine

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CN113464235B CN113464235B (en) 2023-03-14

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005007406A1 (en) * 2005-02-18 2006-08-24 Dr.Ing.H.C. F. Porsche Ag Method for controlling an engine oil pump
WO2009112921A1 (en) * 2008-03-10 2009-09-17 Toyota Jidosha Kabushiki Kaisha Transmission hydraulic circuit, transmission provided therewith and vehicle equipped with same
CN204984527U (en) * 2015-06-15 2016-01-20 湖南机油泵股份有限公司 Control system of guide's formula solenoid valve list chamber feedback variable displacement impeller pump
CN106837467A (en) * 2017-02-27 2017-06-13 安徽江淮汽车集团股份有限公司 A kind of engine lubrication system
CN107975396A (en) * 2017-11-21 2018-05-01 潍柴动力股份有限公司 A kind of engine lubrication assistant control method and device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005007406A1 (en) * 2005-02-18 2006-08-24 Dr.Ing.H.C. F. Porsche Ag Method for controlling an engine oil pump
WO2009112921A1 (en) * 2008-03-10 2009-09-17 Toyota Jidosha Kabushiki Kaisha Transmission hydraulic circuit, transmission provided therewith and vehicle equipped with same
CN204984527U (en) * 2015-06-15 2016-01-20 湖南机油泵股份有限公司 Control system of guide's formula solenoid valve list chamber feedback variable displacement impeller pump
CN106837467A (en) * 2017-02-27 2017-06-13 安徽江淮汽车集团股份有限公司 A kind of engine lubrication system
CN107975396A (en) * 2017-11-21 2018-05-01 潍柴动力股份有限公司 A kind of engine lubrication assistant control method and device

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