CN107975396B - Engine auxiliary lubrication control method and device - Google Patents
Engine auxiliary lubrication control method and device Download PDFInfo
- Publication number
- CN107975396B CN107975396B CN201711165261.9A CN201711165261A CN107975396B CN 107975396 B CN107975396 B CN 107975396B CN 201711165261 A CN201711165261 A CN 201711165261A CN 107975396 B CN107975396 B CN 107975396B
- Authority
- CN
- China
- Prior art keywords
- exhaust temperature
- engine
- lubrication
- current
- post
- 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.)
- Active
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
- F01M1/02—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
- F01M1/18—Indicating or safety devices
- F01M1/20—Indicating or safety devices concerning lubricant pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/14—Lubrication of pumps; Safety measures therefor
-
- 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
- F01M2001/0207—Pressure lubrication using lubricating pumps characterised by the type of pump
- F01M2001/0215—Electrical pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention provides an engine auxiliary lubrication control method and device, wherein the method is applied to a controller in an engine auxiliary lubrication system and comprises the following steps: detecting the running state of an engine controller and the current rotating speed of an engine in real time; if the engine controller is in a power-off state and/or the current rotating speed is smaller than a rotating speed threshold value, acquiring the current working duration of the motor oil pump and the running state of an exhaust temperature sensor; and controlling the motor oil pump to perform post-lubrication operation based on the current working time and the running state of the exhaust temperature sensor, wherein the post-lubrication operation is used for representing the lubrication operation after the engine is stopped. Based on the method disclosed by the invention, the temperature of the booster can be ensured to be reduced after the engine stops, namely the engine is shut down, so that the abrasion caused by overhigh temperature of the supercharger can be slowly even avoided.
Description
Technical Field
The invention relates to the technical field of engines, in particular to an auxiliary lubrication control method and device for an engine.
Background
During normal engine operation, its supercharger removes heat from the flowing oil. After the vehicle is stopped, particularly after the vehicle is stopped without idling, the mechanical oil pump does not work any more, if the temperature of the supercharger, particularly the floating bearing is overhigh at the moment, the oil is cracked and degraded, and the supercharger is easy to wear when the vehicle is started again.
Disclosure of Invention
In view of the above, the present invention provides a method and a device for controlling auxiliary lubrication of an engine, so as to solve the problem that after a vehicle is stopped, a supercharger is too hot and is easily worn. The technical scheme is as follows:
an engine auxiliary lubrication control method is applied to a controller in an auxiliary lubrication system, and comprises the following steps:
detecting the running state of an engine controller and the current rotating speed of an engine in real time;
if the engine controller is in a power-off state and/or the current rotating speed is smaller than a rotating speed threshold value, acquiring the current working time of the motor oil pump and the running state of an exhaust temperature sensor;
and controlling the motor oil pump to perform a post-lubrication operation based on the current working time and the running state of the exhaust temperature sensor, wherein the post-lubrication operation is used for representing the lubrication operation after the engine is stopped.
Preferably, the controlling the electric motor oil pump to perform the after-lubrication operation based on the current operation time period and the operation state of the exhaust temperature sensor includes:
judging whether the current working time is less than a working time threshold of the motor oil pump;
if the current working duration is less than the working duration threshold, judging whether the exhaust temperature sensor is in a normal running state;
if the exhaust temperature sensor is in a normal operation state, judging whether a first current exhaust temperature value fed back by the exhaust temperature sensor is smaller than a first exhaust temperature threshold value or not;
and if the first current exhaust temperature value is not less than the first exhaust temperature threshold value, controlling the motor oil pump to perform post-lubrication operation.
Preferably, the method further comprises the following steps:
if the exhaust temperature sensor is not in a normal running state, judging whether the working time of the engine is less than the working time threshold of the engine;
and if the working time of the engine is not less than the working time threshold of the engine, controlling the electric motor oil pump to perform after-lubrication operation.
Preferably, the controlling the electric motor oil pump to perform a post-lubrication operation, thereafter, further includes:
and carrying out fault diagnosis on the auxiliary lubrication system of the engine.
Preferably, the fault diagnosing for the auxiliary lubrication system of the engine includes:
judging whether the current post-lubrication time length of the motor oil pump is smaller than a post-lubrication time length threshold value or not;
if the current post-lubrication time length is not less than the post-lubrication time length threshold, calling the initial electric quantity of the battery at the beginning of post-lubrication, and judging whether the difference between the current electric quantity of the battery and the initial electric quantity is within a preset difference allowable range;
if the difference is not within the preset difference allowable range, determining that the motor oil pump is in an abnormal operation state;
if the difference is within the preset difference allowable range, acquiring the running state of the engine oil pressure sensor, and judging whether the engine oil pressure sensor and the exhaust temperature sensor are both in a normal running state;
if the engine oil pressure sensor and the exhaust temperature sensor are both in a normal operation state, judging whether a current main oil gallery pressure value fed back by the engine oil pressure sensor is smaller than a main oil gallery pressure threshold value or not and whether a second current exhaust temperature value fed back by the exhaust temperature sensor is smaller than a second exhaust temperature threshold value or not;
and if the current main oil gallery pressure value is smaller than the main oil gallery pressure threshold value and the second current exhaust temperature value is not smaller than the second exhaust temperature threshold value, determining that the lubricating pipeline is in an abnormal operation state.
Preferably, the controlling the electric motor oil pump to perform a post-lubrication operation, thereafter, further includes:
generating a prompt for indicating that the electric motor oil pump is performing a post-lubrication operation.
An engine auxiliary lubrication control apparatus comprising: the device comprises a detection module, an acquisition module and a rear lubrication control module;
the detection module is used for detecting the running state of the engine controller and the current rotating speed of the engine in real time;
the acquisition module is used for acquiring the current working time of the motor oil pump and the running state of the exhaust temperature sensor if the engine controller is in a power-off state and/or the current rotating speed is less than a rotating speed threshold;
and the post-lubrication control module is used for controlling the motor oil pump to perform post-lubrication operation based on the current working time and the running state of the exhaust temperature sensor, and the post-lubrication operation is used for representing the lubrication operation after the engine is stopped.
Preferably, the rear lubrication control module is specifically configured to:
judging whether the current working time is less than a working time threshold of the motor oil pump; if the current working duration is less than the working duration threshold, judging whether the exhaust temperature sensor is in a normal running state; if the exhaust temperature sensor is in a normal operation state, judging whether a first current exhaust temperature value fed back by the exhaust temperature sensor is smaller than a first exhaust temperature threshold value or not; and if the first current exhaust temperature value is not less than the first exhaust temperature threshold value, controlling the motor oil pump to perform post-lubrication operation.
Preferably, the method further comprises the following steps: a fault diagnosis module;
and the fault diagnosis module is used for carrying out fault diagnosis on the auxiliary lubricating system of the engine.
Preferably, the fault diagnosis module is specifically configured to:
judging whether the current post-lubrication time length of the motor oil pump is smaller than a post-lubrication time length threshold value or not; if the current post-lubrication time length is not less than the post-lubrication time length threshold, calling the initial electric quantity of the battery at the beginning of post-lubrication, and judging whether the difference between the current electric quantity of the battery and the initial electric quantity is within a preset difference allowable range; if the difference is not within the preset difference allowable range, determining that the motor oil pump is in an abnormal operation state; if the difference is within the preset difference allowable range, acquiring the running state of the engine oil pressure sensor, and judging whether the engine oil pressure sensor and the exhaust temperature sensor are both in a normal running state; if the engine oil pressure sensor and the exhaust temperature sensor are both in a normal operation state, judging whether a current main oil gallery pressure value fed back by the engine oil pressure sensor is smaller than a main oil gallery pressure threshold value or not and whether a second current exhaust temperature value fed back by the exhaust temperature sensor is smaller than a second exhaust temperature threshold value or not; and if the current main oil gallery pressure value is smaller than the main oil gallery pressure threshold value and the second current exhaust temperature value is not smaller than the second exhaust temperature threshold value, determining that the lubricating pipeline is in an abnormal operation state.
Compared with the prior art, the invention has the following beneficial effects:
the method is applied to a controller in an engine auxiliary lubrication system, and controls the motor oil pump to perform post-lubrication operation based on the current working time of the motor oil pump and the running state of an exhaust temperature sensor under the condition that the engine controller is detected to be in a power-off state and/or the current rotating speed is smaller than a rotating speed threshold value.
Based on the method disclosed by the invention, the controller can be used for controlling the motor oil pump to perform post-lubrication after the engine is stopped on the basis of an auxiliary lubrication system installed on the engine. This ensures that the booster is cooled down after the vehicle has stopped, i.e. the engine has been switched off, thereby alleviating or even avoiding wear caused by an excessively high temperature of the supercharger.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a flowchart of a method for controlling auxiliary lubrication of an engine according to an embodiment of the present invention;
FIG. 2 is a partial method flow diagram of a method for controlling auxiliary lubrication of an engine provided by an embodiment of the present invention;
FIG. 3 is a flow chart of another method of controlling auxiliary lubrication of an engine according to an embodiment of the present invention;
FIG. 4 is a flowchart of another portion of a method for controlling auxiliary lubrication of an engine according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an engine auxiliary lubrication control device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
Post-lubrication: and (4) lubricating operation of the motor oil pump after the engine is stopped.
The engine auxiliary lubrication system: refers to a related oil path formed by the motor oil pump and the branch oil pipe. The motor oil pump is arranged on the side face of the engine, and a branch oil pipe is welded on the original oil strainer and connected to the motor oil pump so that the engine oil enters the oil filter through the motor oil pump by means of an oil pan, an oil strainer, an oil filter, an oil cooler, an oil pressure sensor and a lubricating oil circuit in the original lubricating system of the engine. In addition, check valves are arranged in front of the mechanical oil pump and the motor oil pump to prevent two sets of oil passages of the mechanical oil pump and the motor oil pump from back suction.
The embodiment of the invention provides an engine auxiliary lubrication control method, which is applied to a controller in an auxiliary lubrication system, and a flow chart of the method is shown in figure 1, and comprises the following steps:
s10, detecting the running state of the engine controller and the current rotating speed of the engine in real time;
in this embodiment, the operation states of the engine controller include two states, one is a power-on state, and the other is a power-off state. The current rotation speed of the engine can be obtained in real time by using the rotation speed sensor, and of course, other sensors, such as a rotation angle sensor, can be used to obtain the current rotation angle first and then calculate the related rotation speed to obtain the current rotation speed.
S20, if the engine controller is in a power-off state and/or the current rotating speed is less than the rotating speed threshold value, acquiring the current working duration of the motor oil pump and the running state of the exhaust temperature sensor;
engine shutdown is typically accomplished by powering down the engine controller, but other means are possible, such as a shutdown signal from the vehicle controller, or by pulling the engine off the electric motor on a hybrid vehicle.
For the engine controller to be powered off to stop the engine, the running state of the engine controller can be directly acquired, so that the state of the engine can be determined based on the power-on and power-off states of the engine controller, wherein when the engine controller is in the power-off state, the engine is in the stop state, and otherwise, the engine is not in the stop state.
For the engine stop realized by other modes, because the stop signal cannot be directly acquired, the engine speed can be used to determine whether the engine is in a starting state, for example, if the engine speed is less than the speed threshold, the engine is in a flameout state, otherwise, if the engine speed is not less than the speed threshold, the engine is in a running state.
To determine the time when the vehicle is stopped, i.e. when the engine is off, it can be determined directly from the operating state of the engine controller and the engine speed. And determining that the engine is in a flameout state at the moment and performing after-lubrication as long as one or two conditions of the engine controller being in a power-off state and the current rotating speed of the engine being less than the rotating speed threshold are met.
In this embodiment, the timer may be used to count a lubrication time period from the start of the motor oil pump to the current time as the current working time period of the motor oil pump.
Further, the operation state of the exhaust gas temperature sensor includes two kinds, one is a normal operation state, and the other is an abnormal operation state. When the current operation state of the exhaust temperature sensor is identified, the current operation state can be determined by using the voltage value output by the exhaust temperature sensor, the feedback exhaust temperature value and the like.
For example, first, whether a voltage value output by an exhaust temperature sensor is within a preset voltage allowable range is judged; if the temperature of the exhaust gas is not within the preset voltage allowable range, determining that the exhaust gas temperature sensor is not in a normal operation state; if the temperature is within the preset voltage allowable range, further judging whether the exhaust temperature value fed back by the temperature feedback device is within the preset temperature allowable range; if the temperature is not within the preset temperature allowable range, determining that the exhaust temperature sensor is not in a normal operation state; and if the temperature is within the preset temperature allowable range, determining that the engine oil pressure sensor is in a normal operation state. Of course, the operation state of the exhaust gas temperature sensor may also be determined by other means, such as current and the exhaust gas temperature value fed back in a certain period.
S30, controlling the motor oil pump to perform post-lubrication operation based on the current working duration and the running state of the exhaust temperature sensor, wherein the post-lubrication operation is used for representing the lubrication operation after the engine is stopped;
in the process of executing step S30, since the engine supercharger temperature is directly affected by the exhaust gas temperature, it is possible to determine whether or not to perform the after-lubrication based on the exhaust gas temperature fed back by the exhaust gas temperature sensor when the exhaust gas temperature sensor is in the normal operation state.
When the exhaust temperature sensor is not in a normal operation state, the temperature of the supercharger can be indirectly judged by the working time of the engine, for example, when the working time of the engine is short, the temperature of the supercharger cannot be very high, so that whether to perform after-lubrication can be determined by the working time of the engine.
In a specific implementation process, in the step S30, in the process of "controlling the motor oil pump to perform the post-lubrication operation based on the current operating time and the operating state of the exhaust temperature sensor", the following steps may be specifically adopted, and a flowchart of the method is shown in fig. 2:
s301, judging whether the current working time is less than the working time threshold of the motor oil pump; if the current working duration is less than the working duration threshold, executing step S302;
in this embodiment, if the current operating time of the motor oil pump is not less than the upper limit thereof, that is, the operating time threshold, the motor oil pump is directly turned off.
S302, judging whether the exhaust temperature sensor is in a normal operation state; if the exhaust temperature sensor is in a normal operation state, executing step S303;
s303, judging whether a first current exhaust temperature value fed back by the exhaust temperature sensor is smaller than a first exhaust temperature threshold value or not; if the first current exhaust temperature value is not less than the first exhaust temperature threshold value, executing step S304;
in this embodiment, if the first current exhaust temperature value fed back by the exhaust temperature sensor is smaller than the upper limit, that is, the first exhaust temperature threshold value, it indicates that the temperature of the supercharger is low, and no post-lubrication is required.
And S304, controlling the motor oil pump to perform post-lubrication operation.
In addition, in some embodiments, step S30 further includes the following steps:
if the exhaust temperature sensor is not in a normal running state, judging whether the working time of the engine is less than the working time threshold of the engine; and if the working time of the engine is not less than the working time threshold of the engine, controlling the motor oil pump to perform post-lubrication operation.
In some embodiments, the method further comprises the following steps for diagnosing the fault of the auxiliary lubrication system of the engine, and the flow chart of the method is shown in fig. 3:
and S40, carrying out fault diagnosis on the auxiliary lubrication system of the engine.
In the process of executing step S40, information such as battery level, oil pressure, and exhaust temperature during the post-lubrication process of the motor oil pump may be used to perform fault diagnosis on some components in the engine auxiliary lubrication system.
In a specific implementation process, the step S40 "performing fault diagnosis on the engine auxiliary lubrication system" may specifically adopt the following steps, and a flowchart of the method is shown in fig. 4:
s401, judging whether the current post-lubrication duration of the motor oil pump is smaller than a post-lubrication duration threshold value; if the current post-lubrication time length is not less than the post-lubrication time length threshold, executing a step S402;
in this embodiment, if the current post-lubrication duration of the motor oil pump is smaller than the post-lubrication duration threshold, no operation is performed.
S402, calling the initial electric quantity of the battery at the starting moment of the back lubrication, and judging whether the difference between the current electric quantity of the battery and the initial electric quantity is within a preset difference allowable range; if the difference is not within the preset difference allowable range, go to step S403; if the difference is within the preset difference allowable range, go to step S404;
in this embodiment, the power consumption of the battery in a period of post-lubrication, that is, the difference, may be calculated using the current power of the battery, that is, the current power and the initial power of the battery at the time when the post-lubrication operation is started; if the difference is not within the preset difference allowable range, the power consumption of the motor oil pump is too small or too large, and the motor oil pump is in an abnormal operation state, otherwise, the motor oil pump is in a normal operation state.
S403, determining that the motor oil pump is in an abnormal operation state;
s404, acquiring the running states of the engine oil pressure sensor and the exhaust temperature sensor, and judging whether the engine oil pressure sensor and the exhaust temperature sensor are in normal running states; if the engine oil pressure sensor and the exhaust temperature sensor are both in a normal operation state, executing step S405;
s405, judging whether the current main oil gallery pressure value fed back by the engine oil pressure sensor is smaller than a main oil gallery pressure threshold value or not, and whether a second current exhaust temperature value fed back by the exhaust temperature sensor is smaller than a second exhaust temperature threshold value or not;
when the motor oil pump, the engine oil pressure sensor and the exhaust temperature sensor are in normal operation states, if the current main oil gallery pressure value is smaller than the lower limit, namely the main oil gallery pressure threshold value, the second current exhaust temperature threshold value is not smaller than the upper limit, namely the second exhaust temperature value, the situation that the oil quantity in the main oil gallery is insufficient at the moment is shown, and the temperature of the supercharger is not reduced to a proper temperature is shown. In this embodiment, the magnitude relationship between the first exhaust temperature value and the second exhaust temperature value is not particularly limited in this embodiment.
S406, if the current main oil gallery pressure value is smaller than the main oil gallery pressure threshold value and the second current exhaust temperature value is not smaller than the second exhaust temperature threshold value, it is determined that the lubricating pipeline is in an abnormal operation state.
In some embodiments, to prompt the user for a post-lubrication condition, the method further comprises:
and generating prompt information for representing that the motor oil pump is performing the after-lubrication operation.
Specifically, whether the post-lubrication is in progress or not can be monitored in real time, and corresponding prompt information is generated to prompt a user of the post-lubrication state of the motor oil pump.
The prompt message can be sent to a prompt device, the prompt device can prompt in a preset form, for example, the prompt device can be a prompt lamp, and the prompt lamp can flash, light or change the display color to indicate that the motor oil pump performs the after-lubrication operation.
The above steps S301 to S304 are only a preferred implementation manner of the process of "controlling the motor oil pump to perform the post-lubrication operation based on the current operating time and the operating state of the exhaust temperature sensor" in step S30 according to the embodiment of the present application, and the specific implementation manner of this process may be arbitrarily set according to its own requirements, and is not limited herein.
The above steps S401 to S406 are only one preferred implementation of the process of "performing fault diagnosis on the auxiliary lubrication system of the engine" in step S40 in the embodiment of the present application, and the specific implementation of this process may be arbitrarily set according to its own requirements, and is not limited herein.
According to the engine auxiliary lubrication control method provided by the embodiment of the invention, under the condition that the engine controller is detected to be in a power-off state and/or the current rotating speed is less than the rotating speed threshold, the motor oil pump is controlled to carry out the post-lubrication operation based on the current working duration of the motor oil pump and the running state of the exhaust temperature sensor. This ensures that the temperature of the intensifier is reduced after the vehicle has stopped, i.e. the engine has been switched off, in order to slow down or even avoid wear caused by an excessively high temperature of the intensifier.
Based on the method for controlling auxiliary lubrication of an engine provided by the above embodiment, an embodiment of the present invention provides an apparatus for performing the above method, and a schematic structural diagram of the apparatus is shown in fig. 5, where the apparatus includes: the device comprises a detection module 10, an acquisition module 20 and a rear lubrication control module 30;
the detection module 10 is used for detecting the running state of an engine controller and the current rotating speed of the engine in real time;
the obtaining module 20 is configured to obtain a current working duration of the motor oil pump and an operation state of the exhaust temperature sensor if the engine controller is in a power-off state and/or the current rotation speed is less than a rotation speed threshold;
and the post-lubrication control module 30 is configured to control the motor oil pump to perform a post-lubrication operation based on the current operating time and the operating state of the exhaust temperature sensor, where the post-lubrication operation is used to represent a lubrication operation after the engine is stopped.
In some of these embodiments, the post-lubrication control module 30 is specifically configured to:
judging whether the current working time is less than a working time threshold of the motor oil pump; if the current working duration is less than the working duration threshold, judging whether the exhaust temperature sensor is in a normal running state; if the exhaust temperature sensor is in a normal operation state, judging whether a first current exhaust temperature value fed back by the exhaust temperature sensor is smaller than a first exhaust temperature threshold value or not; and if the first current exhaust temperature value is not less than the first exhaust temperature threshold value, controlling the motor oil pump to perform post-lubrication operation.
In some of these embodiments, the post-lubrication control module 30 is further configured to:
if the exhaust temperature sensor is not in a normal running state, judging whether the working time of the engine is less than the working time threshold of the engine; and if the working time of the engine is not less than the working time threshold of the engine, controlling the motor oil pump to perform post-lubrication operation.
In some embodiments, the apparatus further comprises the following modules: a fault diagnosis module;
and the fault diagnosis module is used for carrying out fault diagnosis on the auxiliary lubricating system of the engine.
In some embodiments, the fault diagnosis module is specifically configured to:
judging whether the current post-lubrication time length of the motor oil pump is smaller than a post-lubrication time length threshold value or not; if the current post-lubrication time length is not less than the post-lubrication time length threshold, calling the initial electric quantity of the battery at the post-lubrication starting moment, and judging whether the difference between the current electric quantity of the battery and the initial electric quantity is within a preset difference allowable range; if the difference is not within the preset difference allowable range, determining that the motor oil pump is in an abnormal operation state; if the difference is within the preset difference allowable range, acquiring the running state of the engine oil pressure sensor, and judging whether the engine oil pressure sensor and the exhaust temperature sensor are both in a normal running state; if the engine oil pressure sensor and the exhaust temperature sensor are both in a normal operation state, judging whether the current main oil gallery pressure value fed back by the engine oil pressure sensor is smaller than a main oil gallery pressure threshold value or not and whether a second current exhaust temperature value fed back by the exhaust temperature sensor is smaller than a second exhaust temperature threshold value or not; and if the current main oil gallery pressure value is smaller than the main oil gallery pressure threshold value and the second current exhaust temperature value is not smaller than the second exhaust temperature threshold value, determining that the lubricating pipeline is in an abnormal operation state.
In some embodiments, the apparatus further comprises the following modules: a prompt message generation module;
and the prompt information generating module is used for generating prompt information for representing that the motor oil pump is performing the after-lubrication operation.
The engine auxiliary lubrication control device provided by the embodiment of the invention can control the motor oil pump to perform the after-lubrication operation based on the current working time of the motor oil pump and the running state of the exhaust temperature sensor under the condition that the engine controller is detected to be in the power-off state and/or the current rotating speed is less than the rotating speed threshold value. This ensures that the temperature of the intensifier is reduced after the vehicle has stopped, i.e. the engine has been switched off, in order to slow down or even avoid wear caused by an excessively high temperature of the intensifier.
The method and the device for controlling the auxiliary lubrication of the engine provided by the invention are described in detail, the principle and the implementation mode of the invention are explained by applying specific examples, and the description of the examples is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include or include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. An engine auxiliary lubrication control method is characterized in that a controller applied to an auxiliary lubrication system comprises the following steps:
detecting the running state of an engine controller and the current rotating speed of an engine in real time;
if the engine controller is in a power-off state and/or the current rotating speed is smaller than a rotating speed threshold value, acquiring the current working time of the motor oil pump and the running state of an exhaust temperature sensor;
controlling the motor oil pump to perform a post-lubrication operation based on the current working duration and the running state of the exhaust temperature sensor, wherein the post-lubrication operation is used for representing the lubrication operation after the engine is stopped;
carrying out fault diagnosis on an auxiliary lubricating system of the engine;
wherein, the fault diagnosis of the engine auxiliary lubrication system comprises the following steps:
judging whether the current post-lubrication time length of the motor oil pump is smaller than a post-lubrication time length threshold value or not;
if the current post-lubrication time length is not less than the post-lubrication time length threshold, calling the initial electric quantity of the battery at the beginning of post-lubrication, and judging whether the difference between the current electric quantity of the battery and the initial electric quantity is within a preset difference allowable range;
if the difference is not within the preset difference allowable range, determining that the motor oil pump is in an abnormal operation state;
if the difference is within the preset difference allowable range, acquiring the running state of the engine oil pressure sensor, and judging whether the engine oil pressure sensor and the exhaust temperature sensor are both in a normal running state;
if the engine oil pressure sensor and the exhaust temperature sensor are both in a normal operation state, judging whether a current main oil gallery pressure value fed back by the engine oil pressure sensor is smaller than a main oil gallery pressure threshold value or not and whether a second current exhaust temperature value fed back by the exhaust temperature sensor is smaller than a second exhaust temperature threshold value or not;
and if the current main oil gallery pressure value is smaller than the main oil gallery pressure threshold value and the second current exhaust temperature value is not smaller than the second exhaust temperature threshold value, determining that the lubricating pipeline is in an abnormal operation state.
2. The method of claim 1, wherein said controlling said electric motor oil pump to perform a post-lubrication operation based on said current operation period and an operation state of said exhaust gas temperature sensor comprises:
judging whether the current working time is less than a working time threshold of the motor oil pump;
if the current working duration is less than the working duration threshold, judging whether the exhaust temperature sensor is in a normal running state;
if the exhaust temperature sensor is in a normal operation state, judging whether a first current exhaust temperature value fed back by the exhaust temperature sensor is smaller than a first exhaust temperature threshold value or not;
and if the first current exhaust temperature value is not less than the first exhaust temperature threshold value, controlling the motor oil pump to perform post-lubrication operation.
3. The method of claim 2, further comprising:
if the exhaust temperature sensor is not in a normal running state, judging whether the working time of the engine is less than the working time threshold of the engine;
and if the working time of the engine is not less than the working time threshold of the engine, controlling the electric motor oil pump to perform after-lubrication operation.
4. The method of claim 1, wherein the controlling the motor oil pump to perform a post-lubrication operation, thereafter further comprises:
generating a prompt for indicating that the electric motor oil pump is performing a post-lubrication operation.
5. An engine auxiliary lubrication control apparatus, characterized by comprising: the device comprises a detection module, an acquisition module, a rear lubrication control module and a fault diagnosis module;
the detection module is used for detecting the running state of the engine controller and the current rotating speed of the engine in real time;
the acquisition module is used for acquiring the current working time of the motor oil pump and the running state of the exhaust temperature sensor if the engine controller is in a power-off state and/or the current rotating speed is less than a rotating speed threshold;
the post-lubrication control module is used for controlling the motor oil pump to perform post-lubrication operation based on the current working duration and the running state of the exhaust temperature sensor, and the post-lubrication operation is used for representing the lubrication operation after the engine is stopped;
the fault diagnosis module is used for carrying out fault diagnosis on the auxiliary lubricating system of the engine;
the fault diagnosis module is specifically configured to:
judging whether the current post-lubrication time length of the motor oil pump is smaller than a post-lubrication time length threshold value or not; if the current post-lubrication time length is not less than the post-lubrication time length threshold, calling the initial electric quantity of the battery at the beginning of post-lubrication, and judging whether the difference between the current electric quantity of the battery and the initial electric quantity is within a preset difference allowable range; if the difference is not within the preset difference allowable range, determining that the motor oil pump is in an abnormal operation state; if the difference is within the preset difference allowable range, acquiring the running state of the engine oil pressure sensor, and judging whether the engine oil pressure sensor and the exhaust temperature sensor are both in a normal running state; if the engine oil pressure sensor and the exhaust temperature sensor are both in a normal operation state, judging whether a current main oil gallery pressure value fed back by the engine oil pressure sensor is smaller than a main oil gallery pressure threshold value or not and whether a second current exhaust temperature value fed back by the exhaust temperature sensor is smaller than a second exhaust temperature threshold value or not; and if the current main oil gallery pressure value is smaller than the main oil gallery pressure threshold value and the second current exhaust temperature value is not smaller than the second exhaust temperature threshold value, determining that the lubricating pipeline is in an abnormal operation state.
6. The apparatus of claim 5, wherein the post-lubrication control module is specifically configured to:
judging whether the current working time is less than a working time threshold of the motor oil pump; if the current working duration is less than the working duration threshold, judging whether the exhaust temperature sensor is in a normal running state; if the exhaust temperature sensor is in a normal operation state, judging whether a first current exhaust temperature value fed back by the exhaust temperature sensor is smaller than a first exhaust temperature threshold value or not; and if the first current exhaust temperature value is not less than the first exhaust temperature threshold value, controlling the motor oil pump to perform post-lubrication operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711165261.9A CN107975396B (en) | 2017-11-21 | 2017-11-21 | Engine auxiliary lubrication control method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711165261.9A CN107975396B (en) | 2017-11-21 | 2017-11-21 | Engine auxiliary lubrication control method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107975396A CN107975396A (en) | 2018-05-01 |
| CN107975396B true CN107975396B (en) | 2020-03-10 |
Family
ID=62010701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711165261.9A Active CN107975396B (en) | 2017-11-21 | 2017-11-21 | Engine auxiliary lubrication control method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107975396B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578106A (en) * | 2019-02-15 | 2019-04-05 | 广西玉柴机器股份有限公司 | The electric variable flow machine oil pump system of engine |
| CN112211718B (en) * | 2020-09-03 | 2022-04-26 | 潍柴动力股份有限公司 | Method, device and system for protecting supercharger |
| CN113464235B (en) * | 2021-06-16 | 2023-03-14 | 东风汽车集团股份有限公司 | Oil pump becomes row device and engine |
| CN115306532B (en) * | 2022-08-15 | 2023-10-20 | 潍柴重机股份有限公司 | Engine back cooling control method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201437736U (en) * | 2009-08-05 | 2010-04-14 | 广西玉柴机器股份有限公司 | Supercharger delay lubrication and protection device |
| CN103061871A (en) * | 2013-01-09 | 2013-04-24 | 浙江吉利汽车研究院有限公司杭州分公司 | Method and device for lubricating and protecting supercharger of automobile |
| EP2908030A1 (en) * | 2014-02-17 | 2015-08-19 | Hamilton Sundstrand Corporation | Electric generator oil pump drive gear |
| CN205477812U (en) * | 2016-03-18 | 2016-08-17 | 四川职业技术学院 | Lubricated control system of engine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014204542B4 (en) * | 2014-03-12 | 2016-02-25 | Skf Lubrication Systems Germany Gmbh | Lubricating device and compressor with such a lubricating device |
-
2017
- 2017-11-21 CN CN201711165261.9A patent/CN107975396B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201437736U (en) * | 2009-08-05 | 2010-04-14 | 广西玉柴机器股份有限公司 | Supercharger delay lubrication and protection device |
| CN103061871A (en) * | 2013-01-09 | 2013-04-24 | 浙江吉利汽车研究院有限公司杭州分公司 | Method and device for lubricating and protecting supercharger of automobile |
| EP2908030A1 (en) * | 2014-02-17 | 2015-08-19 | Hamilton Sundstrand Corporation | Electric generator oil pump drive gear |
| CN205477812U (en) * | 2016-03-18 | 2016-08-17 | 四川职业技术学院 | Lubricated control system of engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107975396A (en) | 2018-05-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107975396B (en) | Engine auxiliary lubrication control method and device | |
| CN107956539B (en) | Engine auxiliary lubrication control method and device | |
| CN107380170B (en) | Method for monitoring engine state and processing fault of hybrid vehicle | |
| US7921705B2 (en) | Engine coolant temperature estimation system | |
| JP4253676B2 (en) | Oil level sensor abnormality detection device | |
| CN205477812U (en) | Lubricated control system of engine | |
| US10584792B2 (en) | Method for operating a fluid-guiding device, and corresponding fluid-guiding device | |
| US20100129690A1 (en) | Vehicular power source unit | |
| US20210239061A1 (en) | Heater energization control device | |
| CN111022234A (en) | Double-starter control method and device | |
| CN104236250B (en) | The control method of refrigerator and the control device of refrigerator | |
| CN110566339A (en) | Thermostat clamping stagnation monitoring method and device, controller and vehicle | |
| JP2019209811A (en) | Battery diagnosis device | |
| CN103452684B (en) | Idling start-stop controlling method and control system | |
| CN103696859B (en) | The control method of automatic engine stop and system on ramp | |
| CN202756045U (en) | Intelligent engine pre-lubrication system | |
| JP6191225B2 (en) | Engine control device | |
| KR20120063789A (en) | Control method of asist pump for automatic transmission of vehicle provided with isg system | |
| JP2010221828A (en) | Economy running control device | |
| CN104343670B (en) | A kind of drive control method of Oil pump electrical machinery and hydraulic system | |
| JP5260085B2 (en) | Power generation engine starting device and starting method | |
| FR3026142A1 (en) | OXYGEN SENSOR DIAGNOSTIC SYSTEM | |
| CN110043404A (en) | The control device of petrolift | |
| CN101542111B (en) | Glow plug failure detection device | |
| KR102203288B1 (en) | ISG Control Method |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |