CN113623062A - Self-cleaning control method and device for engine thermal management module - Google Patents
Self-cleaning control method and device for engine thermal management module Download PDFInfo
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- CN113623062A CN113623062A CN202010373697.2A CN202010373697A CN113623062A CN 113623062 A CN113623062 A CN 113623062A CN 202010373697 A CN202010373697 A CN 202010373697A CN 113623062 A CN113623062 A CN 113623062A
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- management module
- thermal management
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- ball valve
- cleaning
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/06—Cleaning; Combating corrosion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
- F01P11/16—Indicating devices; Other safety devices concerning coolant temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/06—Cleaning; Combating corrosion
- F01P2011/063—Cleaning
Abstract
The invention relates to the technical field of vehicles, and provides a self-cleaning control method and a self-cleaning control device for an engine thermal management module. The self-cleaning control method of the engine thermal management module comprises the following steps: detecting a state of a vehicle, wherein the state of the vehicle comprises running and power-on before running; and controlling the thermal management module to perform self-cleaning according to the state of the vehicle, wherein the self-cleaning comprises adjusting the opening degree of a ball valve of the thermal management module for preset times at a preset duty ratio. The invention can prevent the thermal management ball valve from being stuck and ensure the normal work of the thermal management module.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a self-cleaning control method and a self-cleaning control device for an engine thermal management module.
Background
The engine heat management module is an important technology for improving the fuel economy of an engine and reducing environmental pollution, but a ball valve of the heat management module can generate a clamping stagnation phenomenon, if the clamping stagnation phenomenon is at a position with small heat dissipation capacity, when the engine runs under a high-power working condition, the heat management module cannot provide corresponding heat dissipation capacity, so that the water temperature of the engine is abnormally increased, and the engine control unit can limit load so as to reduce the water temperature and protect the safety of the engine. However, this reduces the vehicle speed, causing user complaints.
Disclosure of Invention
In view of the above, the present invention is directed to a self-cleaning control method for an engine thermal management module, so as to prevent the thermal management ball valve from being stuck and ensure the thermal management module to work normally.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method of self-cleaning control of an engine thermal management module, the method comprising: detecting a state of a vehicle, wherein the state of the vehicle comprises running and power-on before running; and controlling the thermal management module to perform self-cleaning according to the state of the vehicle, wherein the self-cleaning comprises adjusting the opening degree of a ball valve of the thermal management module for preset times at a preset duty ratio.
Further, controlling the thermal management module to self-clean, based on the state of the vehicle, includes: when the vehicle is powered on before running, acquiring the water temperature of the engine after last power on; and when the water temperature of the engine is greater than the temperature threshold after the engine is powered on last time, controlling the thermal management module to carry out self-cleaning.
Further, after controlling the thermal management module to self-clean, the method further comprises: detecting whether a ball valve of the thermal management module is stuck; when the ball valve is not clamped, acquiring the opening or closing time of the ball valve; and outputting a jamming warning signal when the opening or closing time of the ball valve is greater than or equal to a first time threshold value.
Further, controlling the thermal management module to self-clean, based on the state of the vehicle, includes: when the vehicle is in a running state, detecting whether a ball valve of the thermal management module is clamped or not; controlling the thermal management module to self-clean when the ball valve is stuck; detecting the rotating speed and the torque of the engine when the ball valve is not clamped; and controlling the thermal management module to perform self-cleaning when the rotating speed is smaller than a rotating speed threshold, the torque is smaller than a torque threshold, and the time from the current last self-cleaning is larger than a second time threshold.
Further, after controlling the thermal management module to self-clean, the method further comprises: detecting whether a ball valve of the thermal management module is stuck; and when the ball valve is blocked, outputting a blocking fault signal.
Compared with the prior art, the self-cleaning control method of the engine thermal management module has the following advantages:
firstly, detecting the state of a vehicle, wherein the state of the vehicle comprises running and power-on before running; and then controlling the thermal management module to perform self-cleaning according to the state of the vehicle, wherein the self-cleaning comprises adjusting the opening degree of a ball valve of the thermal management module for preset times at a preset duty ratio. According to the embodiment of the invention, the thermal management module is self-cleaned according to the state of the vehicle, so that the thermal management ball valve can be prevented from being stuck, and the thermal management module can be ensured to work normally.
The invention also aims to provide a self-cleaning control device of the engine thermal management module, so as to prevent the thermal management ball valve from being stuck and ensure the normal work of the thermal management module.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a self-purging control apparatus of an engine thermal management module, the apparatus comprising: the system comprises a detection unit and a control unit, wherein the detection unit is used for detecting the state of a vehicle, and the state of the vehicle comprises running and power-on before running; the control unit is used for controlling the thermal management module to carry out self-cleaning according to the state of the vehicle, wherein the self-cleaning comprises the step of adjusting the preset times of the opening degree of the ball valve of the thermal management module according to a preset duty ratio.
Further, when the state of the vehicle is power-on before running, the control unit is further configured to: acquiring the water temperature of the engine after last power-on; and when the water temperature of the engine is greater than the temperature threshold after the engine is powered on last time, controlling the thermal management module to carry out self-cleaning.
Further, after controlling the thermal management module to perform self-cleaning, the detection unit is further configured to: detecting whether a ball valve of the thermal management module is stuck; when the ball valve is not clamped, acquiring the opening or closing time of the ball valve; the control unit is also used for outputting a jamming warning signal when the opening or closing time of the ball valve is greater than a first time threshold value.
Further, when the vehicle is in a running state, the detection unit is further configured to detect whether a ball valve of the thermal management module is stuck; the control unit is also used for controlling the thermal management module to carry out self-cleaning when the ball valve is stuck; the detection unit is also used for detecting the rotating speed and the torque of the engine when the ball valve is not clamped; the control unit is further used for controlling the thermal management module to conduct self-cleaning when the rotating speed is smaller than a rotating speed threshold value, the torque is smaller than a torque threshold value, and the time from the last time to the current self-cleaning is larger than a second time threshold value.
Further, after controlling the thermal management module to perform self-cleaning, the detection unit is further used for detecting whether a ball valve of the thermal management module is stuck; the control unit is also used for outputting a clamping stagnation fault signal when the ball valve is clamped.
Compared with the prior art, the self-cleaning control device of the engine thermal management module and the self-cleaning control method of the engine thermal management module have the same advantages, and are not repeated herein.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In the drawings:
FIG. 1 is a flow chart of a method of self-purging control of an engine thermal management module according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method of self-cleaning control of an engine thermal management module during power-up prior to operation according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method of self-cleaning control of an engine thermal management module during power-up prior to operation according to another embodiment of the present invention;
FIG. 4 is a flow chart of a method of self-cleaning control of an engine thermal management module during driving according to an embodiment of the present invention;
FIG. 5 is a block diagram of a self-purging control apparatus for an engine thermal management module according to an embodiment of the present invention.
Description of reference numerals:
1 detection unit 2 control unit.
Detailed Description
In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
FIG. 1 is a flow chart of a self-cleaning control method of an engine thermal management module according to an embodiment of the invention. As shown in fig. 1, the method includes:
step S11, detecting the state of the vehicle, wherein the state of the vehicle comprises running and power-on before running;
specifically, the state of the vehicle is divided into a driving state and a non-driving state, and the embodiment of the present invention particularly takes a state of powering on before operation in the non-driving state, that is, a state when the vehicle is about to drive.
And step S12, controlling the thermal management module to perform self-cleaning according to the state of the vehicle, wherein the self-cleaning comprises adjusting the ball valve opening of the thermal management module for preset times at a preset duty ratio.
Specifically, when the vehicle is in a driving state or a power-on state before driving, there are different self-cleaning manners, where self-cleaning refers to adjusting the opening degree of the ball valve by the engine control unit for a preset number of times with a higher duty ratio (which may be preset in advance), for example, adjusting the opening degree of the ball valve from 100% to 0% to 100%, and repeating the above steps for 3 times, although different times may be also adopted, and the embodiments of the present invention are not limited. The higher duty cycle can provide higher ball valve driving force, and can overcome abnormal resistance encountered by the rotation of the ball valve within a certain range.
The following details the manner in which self-cleaning occurs during different states of the vehicle:
FIG. 2 is a flow chart of a method of self-cleaning control of an engine thermal management module during power-up prior to operation according to an embodiment of the invention. As shown in fig. 2, the method includes:
step S21, acquiring the water temperature of the engine after last power-on;
specifically, the embodiment of the invention relates to a self-cleaning control mode when a vehicle is powered on before running. First, the water temperature of the engine recorded after the last power-on may be acquired.
Step S22, judging whether the water temperature of the engine after last power-on is larger than a temperature threshold value;
specifically, the comparison between the water temperature of the engine after last power-on and the temperature threshold is set to prevent the frequent power-on and power-off operations from generating useless self-cleaning, because if the water temperature after last power-on is less than or equal to the temperature threshold, the engine is not started or runs for a short time, the environment of the ball valve is basically consistent, and self-cleaning is not needed again.
Step S23, when the water temperature of the engine is less than or equal to the temperature threshold value after the last power-on, self-cleaning is not carried out;
and step S24, controlling the thermal management module to carry out self-cleaning when the water temperature of the engine is greater than the temperature threshold value after the last power-on.
After self-cleaning, embodiments of the present invention also provide a control method as shown in FIG. 3. As shown in fig. 3, the method includes:
step S31, detecting whether the ball valve of the thermal management module is stuck;
step S32, when the ball valve is stuck, outputting a stuck fault signal;
specifically, after self-cleaning, the ball valve still has a jamming phenomenon, which indicates that the ball valve has a fault, and the fault cannot be solved through self-cleaning, and needs to be reported to wait for the repair of a driver.
Step S33, when the ball valve is not blocked, the opening or closing time of the ball valve is obtained;
step S34, judging whether the opening or closing time of the ball valve is less than or equal to a first time threshold value;
specifically, the comparison of the opening or closing time of the ball valve with the first time threshold is set to judge whether the ball valve has a hidden danger.
Step S35, when the opening or closing time of the ball valve is larger than a first time threshold, outputting a jamming warning signal;
in particular, a lazy failure may be understood as a potential slight risk of jamming, and a potential hazard may be discovered early for handling.
And step S36, when the opening or closing time of the ball valve is less than or equal to the first time threshold value, not alarming.
Specifically, if the ball valve is judged to have no hidden danger, no warning is needed.
FIG. 4 is a flow chart of a method for self-cleaning control of an engine thermal management module during driving according to an embodiment of the invention. As shown in fig. 4, the method includes:
step S41, detecting whether the ball valve of the thermal management module is stuck;
specifically, the embodiment of the invention is a mode for controlling self-cleaning when a vehicle runs. In the vehicle driving process, the ball valve jamming at the moment is the most dangerous and needs to be solved in time.
And step S42, controlling the thermal management module to carry out self-cleaning when the ball valve is stuck.
Specifically, if the ball valve is stuck, the self-cleaning is carried out through heat management, so that the stuck fault can be eliminated within a certain range, and the normal use of an engine and a vehicle is ensured;
step S43, detecting whether the ball valve of the thermal management module is stuck;
step S44, when the ball valve is stuck, outputting a stuck fault signal;
specifically, after the self-cleaning process is performed, whether the ball valve is jammed can be detected again, and if the ball valve is still jammed, the self-cleaning process fails to solve the jamming problem, and the jamming fault needs to be reported.
Step S45, when the ball valve is not blocked, detecting the rotating speed and the torque of the engine;
specifically, if the ball valve is not stuck, a stuck prevention may be performed. For this purpose, the rotational speed and torque of the engine are first detected. If the rotating speed and the torque are both at a lower level and the time interval between the rotating speed and the torque is larger than a second time threshold, the self-cleaning of the thermal management is carried out, and the generation of the jamming can be effectively prevented. Wherein the process may be as shown in steps S44-S48.
Step S46, judging whether the rotating speed is less than a rotating speed threshold value;
step S47, when the rotating speed is smaller than the rotating speed threshold, judging whether the torque is smaller than the torque threshold;
step S48, when the torque is smaller than the torque threshold, judging whether the time of the last self-cleaning of the current distance is larger than a second time threshold;
step S49, when the rotating speed is less than a rotating speed threshold, the torque is less than a torque threshold, and the time from the last time to the current self-cleaning is greater than a second time threshold, controlling the thermal management module to perform self-cleaning;
specifically, the rotating speed and the torque are smaller than the rotating speed threshold and the torque threshold, which indicates that the engine is in a low-power working condition, i.e., the heat dissipation requirement is not high, and the self-cleaning at this time does not reduce the heat dissipation capacity, thereby bringing the risk of water temperature rising. And whether the time of the last self-cleaning at the current distance is larger than the second time threshold is judged because the engine is in a low-power working condition for a long time and unnecessary frequent self-cleaning can be caused, and the comparison of the second time threshold is set, so that the next self-cleaning can be carried out only after a certain time from the last self-cleaning, and the frequent self-cleaning can be prevented.
And step S410, when the rotating speed is larger than or equal to a rotating speed threshold value, the torque is larger than or equal to a torque threshold value, or the time from the current time to the last self-cleaning is smaller than or equal to a second time threshold value, the self-cleaning is not carried out.
Specifically, the rotation speed and the torque are high, namely, the rotation speed and the torque are greater than the rotation speed threshold and the torque threshold, the engine is in a high-power working condition, the heat dissipation requirement is high, at the moment, if self-cleaning is carried out, the heat dissipation capacity is reduced, the water temperature is abnormally increased, and self-cleaning is not carried out under the working condition. And as described above, if the distance from the last self-cleaning is too short, self-cleaning should not be performed.
FIG. 5 is a block diagram of a self-purging control apparatus for an engine thermal management module according to an embodiment of the present invention. As shown in fig. 5, the apparatus includes: the device comprises a detection unit 1 and a control unit 2, wherein the detection unit 1 is used for detecting the state of a vehicle, and the state of the vehicle comprises running and power-on before running; the control unit 2 is used for controlling the thermal management module to perform self-cleaning according to the state of the vehicle, wherein the self-cleaning comprises the step of adjusting the ball valve opening degree of the thermal management module for preset times at a preset duty ratio.
Further, when the state of the vehicle is power-on before running, the control unit 2 is further configured to: acquiring the water temperature of the engine after last power-on; and when the water temperature of the engine is greater than the temperature threshold after the engine is powered on last time, controlling the thermal management module to carry out self-cleaning.
Further, after controlling the thermal management module to perform self-cleaning, the detection unit 1 is further configured to: detecting whether a ball valve of the thermal management module is stuck; when the ball valve is not clamped, acquiring the opening or closing time of the ball valve; the control unit 2 is further configured to output a jamming warning signal when the opening or closing time of the ball valve is greater than a first time threshold.
Further, when the vehicle is in a running state, the detection unit 1 is further configured to detect whether a ball valve of the thermal management module is stuck; the control unit 2 is also used for controlling the thermal management module to carry out self-cleaning when the ball valve is stuck; the detection unit 1 is also used for detecting the rotating speed and the torque of the engine when the ball valve is not clamped; the control unit 2 is further configured to control the thermal management module to perform self-cleaning when the rotation speed is less than a rotation speed threshold, the torque is less than a torque threshold, and the time from the last self-cleaning to the present time is greater than a second time threshold.
Further, after controlling the thermal management module to perform self-cleaning, the detection unit is further used for detecting whether a ball valve of the thermal management module is stuck; the control unit is also used for outputting a clamping stagnation fault signal when the ball valve is clamped.
The self-cleaning control device of the engine thermal management module is similar to the embodiment of the self-cleaning control method of the engine thermal management module, and is not described again.
Firstly, detecting the state of a vehicle, wherein the state of the vehicle comprises running and power-on before running; and then controlling the thermal management module to perform self-cleaning according to the state of the vehicle, wherein the self-cleaning comprises adjusting the opening degree of a ball valve of the thermal management module for preset times at a preset duty ratio. According to the embodiment of the invention, the thermal management module is self-cleaned according to the state of the vehicle, so that the thermal management ball valve can be prevented from being stuck, and the thermal management module can be ensured to work normally.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A method of self-cleaning control of an engine thermal management module, the method comprising:
detecting a state of a vehicle, wherein the state of the vehicle comprises running and power-on before running;
and controlling the thermal management module to perform self-cleaning according to the state of the vehicle, wherein the self-cleaning comprises adjusting the opening degree of a ball valve of the thermal management module for preset times at a preset duty ratio.
2. The engine thermal management module self-cleaning control method of claim 1, wherein controlling the thermal management module to self-clean according to the state of the vehicle comprises:
when the vehicle is powered on before running, acquiring the water temperature of the engine after last power on;
and when the water temperature of the engine is greater than the temperature threshold after the engine is powered on last time, controlling the thermal management module to carry out self-cleaning.
3. The self-cleaning control method for the engine thermal management module of claim 2, further comprising, after controlling the thermal management module to self-clean:
detecting whether a ball valve of the thermal management module is stuck;
when the ball valve is not clamped, acquiring the opening or closing time of the ball valve;
and outputting a jamming warning signal when the opening or closing time of the ball valve is greater than a first time threshold value.
4. The engine thermal management module self-cleaning control method of claim 1, wherein controlling the thermal management module to self-clean according to the state of the vehicle comprises:
when the vehicle is in a running state, detecting whether a ball valve of the thermal management module is clamped or not;
controlling the thermal management module to self-clean when the ball valve is stuck;
detecting the rotating speed and the torque of the engine when the ball valve is not clamped;
and controlling the thermal management module to perform self-cleaning when the rotating speed is smaller than a rotating speed threshold, the torque is smaller than a torque threshold, and the time from the current last self-cleaning is larger than a second time threshold.
5. The self-cleaning control method for the engine thermal management module of claim 1, further comprising, after controlling the thermal management module to self-clean:
detecting whether a ball valve of the thermal management module is stuck;
and when the ball valve is blocked, outputting a blocking fault signal.
6. A self-purging control apparatus for an engine thermal management module, the apparatus comprising:
a detection unit and a control unit, wherein,
the detection unit is used for detecting the state of a vehicle, and the state of the vehicle comprises running and power-on before running;
the control unit is used for controlling the thermal management module to carry out self-cleaning according to the state of the vehicle, wherein the self-cleaning comprises the step of adjusting the preset times of the opening degree of the ball valve of the thermal management module according to a preset duty ratio.
7. The engine thermal management module self-purging control apparatus of claim 6, wherein when the state of the vehicle is powered up before operation, the control unit is further configured to:
acquiring the water temperature of the engine after last power-on;
and when the water temperature of the engine is greater than the temperature threshold after the engine is powered on last time, controlling the thermal management module to carry out self-cleaning.
8. The self-purging control apparatus of an engine thermal management module of claim 7, wherein after controlling the thermal management module to self-purge,
the detection unit is further configured to:
detecting whether a ball valve of the thermal management module is stuck;
when the ball valve is not clamped, acquiring the opening or closing time of the ball valve; the control unit is also used for outputting a jamming warning signal when the opening or closing time of the ball valve is greater than a first time threshold value.
9. The self-purging control of an engine thermal management module of claim 6, wherein when the state of the vehicle is in motion,
the detection unit is also used for detecting whether a ball valve of the thermal management module is clamped or not;
the control unit is also used for controlling the thermal management module to carry out self-cleaning when the ball valve is stuck;
the detection unit is also used for detecting the rotating speed and the torque of the engine when the ball valve is not clamped;
the control unit is further used for controlling the thermal management module to conduct self-cleaning when the rotating speed is smaller than a rotating speed threshold value, the torque is smaller than a torque threshold value, and the time from the last time to the current self-cleaning is larger than a second time threshold value.
10. The self-purging control apparatus of an engine thermal management module of claim 6, wherein after controlling the thermal management module to self-purge,
the detection unit is also used for detecting whether a ball valve of the thermal management module is clamped or not;
the control unit is also used for outputting a clamping stagnation fault signal when the ball valve is clamped.
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| CN113623062B (en) | 2022-07-29 |
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