CN113944531A

CN113944531A - Engine lubricating oil way system and method

Info

Publication number: CN113944531A
Application number: CN202111024186.0A
Authority: CN
Inventors: 欧阳丹; 施发义; 查乃敏; 熊迪; 丁伟
Original assignee: Dongfeng Motor Group Co Ltd
Current assignee: Dongfeng Motor Group Co Ltd
Priority date: 2021-09-02
Filing date: 2021-09-02
Publication date: 2022-01-18
Anticipated expiration: 2041-09-02
Also published as: CN113944531B

Abstract

The invention discloses an engine lubricating oil path system and method, belongs to the technical field of engine lubrication, and solves the technical problem that oil cannot be used quickly at the tail end of an oil path due to high viscosity of engine oil in a low-temperature environment. The oil filter is also provided with a bypass valve, one end of the second oil way is connected with an oil outlet of the oil pump, and the other end of the second oil way is connected with the main oil way; a solenoid valve is disposed on the second oil passage, the solenoid valve operatively communicating the second oil passage with the main oil passage. The invention shortens the time of engine oil reaching the tail end of the oil way system, is beneficial to the normal starting of the vehicle in a low-temperature environment, and can reduce the abrasion of parts needing engine oil lubrication.

Description

Engine lubricating oil way system and method

Technical Field

The invention belongs to the technical field of engine lubrication, and particularly relates to an engine lubricating oil circuit system and method.

Background

Faults such as camshaft breakage, supercharger damage and the like frequently occur in low-temperature areas after the engine is started for many times in life, and most of the faults are caused by insufficient lubrication of oil parts through investigation. In the traditional lubricating system, an oil pump is adopted to drive the whole lubricating system, and all oil consumption parts are connected in series on an oil way. In the starting process of the engine, the oil pressure is gradually built by the oil passage according to the distance from the oil pump, the oil pressure building time of the oil passage at the tail end of the oil passage is longest, particularly in a low-temperature environment, the viscosity of engine oil is large, the engine oil is difficult to flow, the oil pressure building time is longer, the oil consumption of the oil passage tail end structure is not facilitated, and the structure at the tail end of the oil passage is easy to damage.

Disclosure of Invention

The technical problem that oil cannot be used quickly at the tail end of an oil way due to the fact that the viscosity of engine oil is high under the low-temperature environment is solved to a certain extent, and therefore the engine lubricating oil way system and the engine lubricating oil way method are provided.

In order to achieve the above purpose, the technical scheme of the application is as follows:

the utility model provides an engine lubrication oil piping system, includes the oil pump, first oil circuit, oil cleaner, main oil circuit and the branch oil circuit that connect gradually, still be equipped with the bypass valve on the oil cleaner, engine lubrication oil piping system still includes:

one end of the second oil way is connected with an oil outlet of the oil pump, and the other end of the second oil way is connected with the main oil way;

a solenoid valve disposed on the second oil passage, the solenoid valve operable to communicate the second oil passage with the main oil passage.

In some embodiments, the main oil path has a first end and a second end, the oil outlet of the oil filter is connected to the middle of the main oil path, the oil inlet of the branch oil path is connected to the first end of the main oil path, and the oil outlet of the second oil path is connected to the first end of the main oil path.

In some embodiments, the second oil passage has an inner diameter larger than that of the first oil passage.

In some embodiments, an inner diameter of the second oil passage is equal to an inner diameter of the main oil passage.

In some embodiments, the system further comprises a plurality of main bearings, and the oil passages of the plurality of main bearings are all connected with the main oil passage.

In some embodiments, the system further comprises a piston cooling nozzle, a chain tensioner, a variable timing valve, a camshaft, a fuel pump, and a supercharger, wherein the oil passage of the piston cooling nozzle, the oil passage of the chain tensioner, the oil passage of the variable timing valve, the oil passage of the camshaft, the oil passage of the fuel pump, and the oil passage of the supercharger are connected to the branch oil passage.

In some embodiments, a controller is connected to the solenoid valve.

In some embodiments, a temperature measuring device is disposed within the oil pump, and the temperature measuring device is connected to the controller.

An engine lubricating oil path control method is applied to an engine lubricating oil path system and comprises the following steps:

when an automobile is started, acquiring the actual temperature of the oil pump;

judging whether the acquired actual temperature of the oil pump is greater than a first set temperature;

if the acquired actual temperature of the oil pump is not greater than a first set temperature, the electromagnetic valve is opened, so that the oil in the oil pump enters the main oil path and the branch oil path through the first oil path and the second oil path;

and if the acquired actual temperature of the oil pump is higher than a first set temperature, closing the electromagnetic valve, and enabling the oil in the oil pump to enter the main oil path and the branch oil path only through the first oil path.

In some embodiments, the actual temperature of the oil pump is a temperature of an internal cavity of the oil pump.

The embodiment of the application has at least the following beneficial effects:

according to the technical scheme, the second oil way is arranged between the oil outlet of the oil pump and the main oil way, when the vehicle is started in a low-temperature environment, the electromagnetic valve is opened, so that the engine oil pumped out of the oil pump directly enters the main oil way from the second oil way and then enters the branch oil way and each part needing the engine oil lubrication in the oil way system from the main oil way, and under the condition that the viscosity of the engine oil is large so that the engine oil overflows slowly through the oil filter, the second oil way greatly shortens the time for the engine oil to reach the tail end of the oil way system, the normal starting of the vehicle in the low-temperature environment is facilitated, and the abrasion of the part needing the engine oil lubrication can be reduced; meanwhile, as the engine oil enters the main oil way from the second oil way, the pressure of the engine oil filter is greatly reduced, the oil leakage or other conditions of the engine oil filter caused by high internal pressure can be avoided or relieved, and the vehicle safety in a low-temperature environment is facilitated.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic diagram illustrating the structure of an engine lubrication oil system according to the present application;

the labels in the figure are: 1-a first oil path, 2-an oil filter, 3-a main oil path, 4-a branch oil path, 5-a second oil path, 6-an electromagnetic valve, 7-a main bearing, 8-a piston cooling nozzle, 9-a chain tensioner, 10-a variable timing valve, 11-a camshaft and 12-a supercharger.

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.

Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations 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 viscosity of the engine oil is low (5-100 mm) at normal temperature or high temperature²And/s), the oil flow area of the oil filter in the system can meet the requirement that the oil quickly reaches the tail end of the oil way system, and the resistance value of the oil filter to the oil is relatively small.

At low temperature, the viscosity of the engine oil is high (3000-9000 mm in viscosity)²And/s), through the measurement of the viscosity of the engine oil in work and tests, the viscosity of the engine oil in a low-temperature state is far greater than that of the engine oil in a normal-temperature or high-temperature state, the engine oil is difficult to pass through the engine oil filter at the moment, the pressure value in the engine oil filter is large, the risk of oil leakage exists, and the safety is low. Therefore, the related art often provides a bypass valve on the oil filter to relieve the pressure of the oil filter, but this is not good for improving the end of the oil system.

The application is described below with reference to specific embodiments in conjunction with the following drawings:

example 1

The embodiment provides an engine lubrication oil path system, as shown in fig. 1, the system includes an oil pump, a first oil path 1, an oil filter 2, a main oil path 3 and a branch oil path 4 which are connected in sequence, the oil filter 2 is further provided with a pressure bypass valve, the engine lubrication oil path system further includes a second oil path 5 and an electromagnetic valve 6, one end of the second oil path 5 is connected with an oil outlet of the oil pump, and the other end of the second oil path 5 is connected with the main oil path 3; a solenoid valve 6 is provided on the second oil passage 5, the solenoid valve 6 operatively communicating the second oil passage 5 with the main oil passage 3.

When the vehicle is started in a low-temperature environment, the electromagnetic valve 6 is opened, so that the engine oil pumped out from the engine oil pump directly enters the main oil way 3 from the second oil way 5, and then enters the branch oil way 4 and all parts needing engine oil lubrication in the oil way system from the main oil way 3, and under the condition that the engine oil viscosity is large so that the engine oil overflows slowly from the oil filter 2, the time for the engine oil to reach the tail end of the oil way system is greatly shortened by the second oil way 5, the normal starting of the vehicle in the low-temperature environment is facilitated, and the abrasion of the parts needing engine oil lubrication can be reduced. Meanwhile, as the engine oil enters the main oil way 3 from the second oil way 5, the pressure of the oil filter 2 is greatly reduced, and the oil leakage or other conditions caused by high internal pressure of the oil filter 2 can be avoided or relieved, thereby being beneficial to the safety of the vehicle in a low-temperature environment.

As shown in fig. 1, the main oil path 3 has a first end and a second end, and due to structural limitations of the oil filter itself and layout requirements of a vehicle body system, an oil outlet of the oil filter 2 is connected to the middle of the main oil path, an oil inlet of the branch oil path 4 is connected to the first end of the main oil path 3, and an oil outlet of the second oil path 5 is connected to the first end of the main oil path 3. As can be understood from the above, the addition of the second oil path 5 enables the parts on the main oil path 3 requiring oil lubrication to obtain the oil in time, and meanwhile, the second oil path 5 greatly reduces the path length of the oil entering the branch oil path 4 in a low-temperature environment, and shortens the time for the oil to reach the tail end of the oil path system. Considering that the viscosity of the engine oil is greatly increased at low temperature, the path of the engine oil is short, the contact area with the inner wall of the pipeline is small, and the time for the engine oil to reach the tail end of the oil way system can also be shortened.

As a more preferable embodiment, in the case where the second oil passage 5 is short, the inner diameter of the second oil passage 5 is larger than the inner diameter of the first oil passage 1, so as to increase the amount of oil that can enter the main oil passage 3 and the branch oil passage 4 per unit time, and to ensure that the oil can quickly flow to the end of the engine-end lubricating oil passage at the time of cold start of the engine. Specifically, in the implementation, the inner diameter of the main oil passage 3 is about 15mm, while the inner diameter of the bypass valve is 7-8mm in most cases, and in the embodiment, the inner diameter of the second oil passage 5 is equal to the inner diameter of the main oil passage 3.

The electromagnetic valve 6 is connected with a controller, and the controller can be directly incorporated into a vehicle control system by controlling the opening or closing of the electromagnetic valve 6 through the controller. The oil pump is internally provided with a temperature measuring device which is connected with the controller. When the vehicle is started, the temperature measuring device measures the temperature of the engine oil in the engine oil pump, and when the measured temperature of the engine oil is judged to be lower by the controller, the controller can drive the electromagnetic valve 6 to open so as to enable the second oil path 5 to be communicated.

The system further comprises a plurality of main bearings 7, oil passages of the main bearings 7 are all connected with the main oil passage 3, the system further comprises a piston cooling nozzle 8, a chain tensioner 9, a variable timing valve 10, a camshaft 11, a fuel pump and a supercharger 12, and the oil passages of the piston cooling nozzle 8, the chain tensioner 9, the variable timing valve 10, the camshaft 11, the fuel pump and the supercharger 12 are all connected with the branch oil passage 4.

The engine oil pumped by the engine oil pump is used for supplying oil to parts needing engine oil lubrication through the main oil path 3 and the branch oil path 4 respectively, and on the basis that the oil outlet of the second oil path 5 is connected with the first end of the main oil path 3, it can be understood that the second oil path 5 is used for supplying oil to the main oil path 3 and the branch oil path 4 simultaneously, and under the condition that the number of parts of the branch oil path 4 is large, the second oil path 5 enables the engine oil to reach the main oil path 3 and the branch oil path 4 quickly, so that the lubrication requirement of the whole system is met.

Example 2

The embodiment provides an engine lubricating oil path control method, which is applied to the engine lubricating oil path system in the embodiment 1, and comprises the following steps:

step 1: and when the automobile is started, acquiring the actual temperature of the oil pump.

Generally, an automobile is provided with a device for acquiring the ambient temperature to read the ambient temperature, but when the used automobile is parked in a cold area, the engine oil is still in a state of high temperature due to the fact that the engine oil takes away heat of all parts of the engine, and at the moment, if the ambient temperature is used as judgment, the engine oil in the system easily enters each oil way without being filtered, and the engine is easily damaged in the past. Thus, the actual temperature of the oil pump is selected as a reference condition. Specifically, the temperature of the outer wall of the oil pump can be selected to facilitate the installation of the temperature measuring structure; the actual temperature of the oil pump can also be the temperature of the inner cavity of the oil pump so as to improve the accuracy.

Step 2: judging whether the acquired actual temperature of the oil pump is greater than a first set temperature; if the acquired actual temperature of the oil pump is not more than the first set temperature, the electromagnetic valve 6 is opened, and the oil in the oil pump enters the main oil path 3 and the branch oil path 4 through the first oil path 1 and the second oil path 5; and if the acquired actual temperature of the oil pump is higher than the first set temperature, closing the electromagnetic valve 6, and allowing the oil in the oil pump to enter the main oil path 3 and the branch oil path 4 only through the first oil path 1.

Specifically, the first set temperature may be-15 ℃, and at this time, the speed of the engine oil entering the main oil path 3 through the first oil path 1 is far less than the speed of the engine oil entering the main oil path 3 through the second oil path 5. Therefore, when the actual temperature of the oil pump is lower than-15 ℃, the electromagnetic valve 6 is opened, so that the second oil way 5 can continuously transmit the engine oil, and the oil consumption of the system oil way is ensured.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through 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 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" indicate orientations or positional relationships based on the orientation or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting 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.

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 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, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

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.

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.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: numerous changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides an engine lubrication oil piping system which characterized in that, includes the oil pump, first oil circuit, oil cleaner, main oil circuit and the branch oil circuit that connect gradually, the last bypass valve that still is equipped with of oil cleaner, engine lubrication oil piping system still includes:

2. The engine-lubricating oil circuit system of claim 1, wherein the main oil circuit has a first end and a second end, the oil outlet of the oil filter is connected to the middle of the main oil passage, the oil inlet of the branch oil circuit is connected to the first end of the main oil circuit, and the oil outlet of the second oil circuit is connected to the first end of the main oil circuit.

3. The engine lubrication oil passage system according to claim 1, wherein an inner diameter of the second oil passage is larger than an inner diameter of the first oil passage.

4. The engine lubrication oil passage system according to claim 3, wherein an inner diameter of the second oil passage is equal to an inner diameter of the main oil passage.

5. The engine lubrication oil circuit system according to claim 1, further comprising a plurality of main bearings, wherein oil circuits of the plurality of main bearings are connected to the main oil circuit.

6. The engine lubrication oil circuit system according to claim 1, further comprising a piston cooling nozzle, a chain tensioner, a variable timing valve, a camshaft, a fuel pump, and a supercharger, wherein the oil circuit of the piston cooling nozzle, the oil circuit of the chain tensioner, the oil circuit of the variable timing valve, the oil circuit of the camshaft, the oil circuit of the fuel pump, and the oil circuit of the supercharger are connected to the branch oil circuit.

7. The engine lubrication oil circuit system according to claim 1, wherein a controller is connected to the solenoid valve.

8. The engine lubrication oil circuit system according to claim 8, wherein a temperature measuring device is arranged in the oil pump, and the temperature measuring device is connected with the controller.

9. An engine lubricating oil passage control method applied to the engine lubricating oil passage system according to any one of claims 1 to 8, comprising the steps of:

10. The engine lubrication oil path system of claim 1, wherein the actual temperature of the oil pump is a temperature of an internal cavity of the oil pump.