CN117627750A - Heating control method and device of engine respirator, electronic equipment and medium - Google Patents
Heating control method and device of engine respirator, electronic equipment and medium Download PDFInfo
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Abstract
The application discloses a heating control method, a device, electronic equipment and a medium of an engine respirator, which relate to the technical field of automobile electronics and monitor whether a respirator heating enabling condition is met or not based on operation parameters of an engine; when the heating enabling condition of the respirator is met, judging whether the temperature difference value between the tail end air temperature of the pipeline of the respirator and the inlet air temperature of the pipeline is smaller than a preset temperature difference threshold value or not; if the temperature difference is less than the temperature difference threshold, determining a target duty cycle based on the temperature difference and the line end pressure of the ventilator; the engine breathing apparatus is heated based on the target duty cycle. The method can improve the efficiency of heating control of the engine respirator.
Description
Technical Field
The application relates to the technical field of automobile electronics, in particular to a heating control method and device of an engine respirator, electronic equipment and a medium.
Background
In the running process of an automobile in a cold area, an engine breather is easy to generate icing. Icing of the engine breather can cause oil channeling of the supercharger, even explosion of the rocker arm cover, and the like.
The existing electric heating scheme of the respirator has the main control principle that: after the engine is ignited, electric heating is immediately carried out until the engine is flameout, the electric heating continuously works, the control mode is simple and rough, the service life and reliability of the heater are greatly tested, and heat waste exists in part of working conditions, so that the efficiency of heating control of the engine breather is lower in the running process of the automobile in a cold area.
Disclosure of Invention
The embodiment of the application provides a heating control method, a device, electronic equipment and a medium of an engine respirator, which can realize accurate heating of the respirator based on a respirator heating enabling condition and a target duty ratio, reduce heat waste and further improve the efficiency of heating control of the engine respirator.
In a first aspect, embodiments of the present application provide a method of controlling heating of an engine breathing apparatus, the method comprising:
monitoring whether a respirator heating enabling condition is met based on an operating parameter of the engine;
when the heating enabling condition of the respirator is met, judging whether the temperature difference value between the pipeline tail end air temperature and the pipeline inlet air temperature of the respirator is smaller than a preset temperature difference threshold value or not;
If the temperature difference is less than the temperature difference threshold, determining a target duty cycle based on the temperature difference and a line end pressure of the ventilator;
the engine breathing apparatus is heated based on the target duty cycle.
The method comprises the steps of monitoring whether a respirator heating enabling condition is met or not based on operation parameters of an engine; when the heating enabling condition of the respirator is met, judging whether the temperature difference value between the pipeline tail end air temperature and the pipeline inlet air temperature of the respirator is smaller than a preset temperature difference threshold value or not; if the temperature difference is less than the temperature difference threshold, determining a target duty cycle based on the temperature difference and a line end pressure of the ventilator; the engine breathing apparatus is heated based on the target duty cycle. According to the method, when the respirator heating enabling condition is monitored to be met, if the temperature difference value between the pipeline end air temperature and the pipeline inlet air temperature of the respirator is judged to be smaller than the preset temperature difference threshold value, a target duty ratio is determined based on the temperature difference value and the pipeline end pressure of the respirator, the engine respirator is heated according to the determined target duty ratio, accurate heating of the respirator is achieved based on the respirator heating enabling condition and the target duty ratio, heat waste is reduced, and therefore efficiency of heating control of the engine respirator is improved.
In one possible implementation, the operating parameters include ambient temperature, and fault indication information; the monitoring of whether a respirator heating enabling condition is met based on an operating parameter of the engine comprises:
monitoring the ambient temperature and the fault indication information;
if the ambient temperature is less than a preset temperature threshold and the fault indication information is preset target indication information, determining that a respirator heating enabling condition is met; the target indication information indicates that no operation fault of a preset type occurs.
According to the method, the operating parameters comprise the ambient temperature and the fault indication information, whether the respirator heating enabling condition is met or not can be monitored efficiently based on the ambient temperature and the fault indication information, the fact that the respirator heating enabling is carried out on the vehicle under the condition that the ambient temperature is lower than the temperature threshold value and no operation fault of a preset type occurs is ensured, the low-efficiency heating or the invalid heating of the engine respirator can be reduced, and the efficiency of heating control of the engine respirator is improved.
In one possible implementation, the temperature difference is determined by:
determining a conduit inlet air temperature of the respirator based on the ambient temperature;
And taking the difference value between the air temperature of the tail end of the pipeline of the respirator and the air temperature of the inlet of the pipeline as the temperature difference value.
The method may determine a conduit inlet air temperature of the ventilator based on the ambient temperature; and taking the difference value between the air temperature of the tail end of the pipeline of the respirator and the air temperature of the inlet of the pipeline as the temperature difference value. The method includes determining a conduit inlet air temperature of the ventilator based on the ambient temperature during determining the temperature difference; and taking the difference value between the air temperature at the tail end of the pipeline of the respirator and the air temperature at the inlet of the pipeline as the temperature difference value, so that the temperature difference value is simply and efficiently obtained, and the heating control efficiency of the engine respirator is improved.
In one possible implementation, the determining a target duty cycle based on the temperature difference and a line end pressure of the ventilator includes:
determining a line end air flow rate of the ventilator based on the line end air temperature and the line end pressure of the ventilator;
determining a preselected duty ratio corresponding to the temperature difference value and the air flow rate at the tail end of the pipeline according to a mapping relation of preset temperature difference information, airspeed information and duty ratio information;
The target duty cycle is determined based on the preselected duty cycle.
According to the method, through the pipeline end air temperature and the pipeline end pressure of the respirator, the pipeline end air flow rate of the respirator is determined, then a preselected duty ratio corresponding to the temperature difference value and the pipeline end air flow rate is determined according to the mapping relation of preset temperature difference information, airspeed information and duty ratio information, and then the target duty ratio is determined based on the preselected duty ratio. According to the method, the target duty ratio is determined based on the preset mapping relation of the temperature difference information, the airspeed information and the duty ratio information, so that the accurate and efficient determination of the duty ratio can be realized, the time consumption in the duty ratio determination process can be reduced, and the heating control efficiency of the engine respirator is improved.
In one possible implementation, the determining the target duty cycle based on the preselected duty cycle includes:
if the preselected duty ratio is greater than or equal to a preset first duty ratio, taking the value of the first duty ratio as the target duty ratio;
if the preselected duty ratio is smaller than or equal to a preset second duty ratio, taking the value of the second duty ratio as the target duty ratio; the second duty cycle is less than the first duty cycle;
And if the value of the preselected duty cycle is between the first duty cycle and the second duty cycle, taking the value of the preselected duty cycle as the target duty cycle.
In the method, if the preselected duty ratio is greater than or equal to a preset first duty ratio, the value of the first duty ratio is used as the target duty ratio; if the preselected duty ratio is smaller than or equal to a preset second duty ratio, taking the value of the second duty ratio as the target duty ratio; the second duty cycle is less than the first duty cycle; and if the value of the preselected duty cycle is between the first duty cycle and the second duty cycle, taking the value of the preselected duty cycle as the target duty cycle. According to the method, the upper limit and the lower limit of the duty ratio in the target duty ratio determining process can be controlled through the first duty ratio and the second duty ratio, the target duty ratio is obtained by outputting the duty ratio after the duty ratio is limited by the maximum value and the minimum value, the numerical range of the target duty ratio is controlled simply and efficiently, and the heating control efficiency of the engine respirator is improved.
In one possible implementation, after the determining the target duty cycle based on the preselected duty cycle, the method further comprises, prior to heating the engine breathing apparatus based on the target duty cycle:
If the pressure of the tail end of the pipeline is monitored to be larger than a preset pressure threshold value, taking the value of a preset third duty ratio as the target duty ratio; the third duty cycle is greater than or equal to the first duty cycle.
In the method, if the pressure at the tail end of the pipeline is monitored to be larger than a preset pressure threshold value, taking the value of a preset third duty ratio as the target duty ratio; the third duty cycle is greater than or equal to the first duty cycle. The method determines that the pressure at the tail end of the pipeline is larger than the preset pressure threshold, can identify the icing blocking state of the engine breather, can realize more efficient value control of the target duty ratio so as to perform stable heating, can realize the assignment of the preset peak value of the duty ratio so as to perform rapid heating, reduce the abnormal operation of the engine breather of the vehicle, can more effectively perform control intervention on the heating of the engine breather, and improves the heating control efficiency of the engine breather.
In a second aspect, embodiments of the present application provide a heating control device for an engine breathing apparatus, the device comprising:
a first monitoring unit for monitoring whether a ventilator heating enabling condition is satisfied based on an operating parameter of the engine;
The second monitoring unit is used for judging whether the temperature difference value between the pipeline tail end air temperature and the pipeline inlet air temperature of the respirator is smaller than a preset temperature difference threshold value or not when the heating enabling condition of the respirator is met;
a parameter determination unit for determining a target duty cycle based on the temperature difference and a line end pressure of the ventilator if the temperature difference is less than the temperature difference threshold;
and the heating control unit is used for heating the engine respirator based on the target duty ratio.
In one possible implementation, the operating parameters include ambient temperature, and fault indication information; the first monitoring unit is specifically configured to:
monitoring the ambient temperature and the fault indication information;
if the ambient temperature is less than a preset temperature threshold and the fault indication information is preset target indication information, determining that a respirator heating enabling condition is met; the target indication information indicates that no operation fault of a preset type occurs.
In one possible implementation manner, the second monitoring unit is specifically configured to:
determining a conduit inlet air temperature of the respirator based on the ambient temperature;
And taking the difference value between the air temperature of the tail end of the pipeline of the respirator and the air temperature of the inlet of the pipeline as the temperature difference value.
In a possible implementation manner, the parameter determining unit is specifically configured to:
determining a line end air flow rate of the ventilator based on the line end air temperature and the line end pressure of the ventilator;
determining a preselected duty ratio corresponding to the temperature difference value and the air flow rate at the tail end of the pipeline according to a mapping relation of preset temperature difference information, airspeed information and duty ratio information;
the target duty cycle is determined based on the preselected duty cycle.
In a possible implementation manner, the parameter determining unit is specifically configured to:
if the preselected duty ratio is greater than or equal to a preset first duty ratio, taking the value of the first duty ratio as the target duty ratio;
if the preselected duty ratio is smaller than or equal to a preset second duty ratio, taking the value of the second duty ratio as the target duty ratio; the second duty cycle is less than the first duty cycle;
and if the value of the preselected duty cycle is between the first duty cycle and the second duty cycle, taking the value of the preselected duty cycle as the target duty cycle.
In a possible implementation manner, the parameter determining unit is further configured to:
if the pressure of the tail end of the pipeline is monitored to be larger than a preset pressure threshold value, taking the value of a preset third duty ratio as the target duty ratio; the third duty cycle is greater than or equal to the first duty cycle.
In a third aspect, there is provided an electronic device comprising a processor and a memory, wherein the memory stores program code that, when executed by the processor, causes the processor to perform the steps of the engine breathing apparatus heating control method of any of the above.
In a fourth aspect, a computer-readable storage medium is provided, in which a computer program is stored, which when executed by a processor, implements the method for controlling the heating of an engine breathing apparatus of any one of the above.
The technical effects caused by any implementation manner of the second aspect to the fourth aspect may be referred to the technical effects caused by the implementation manner of the first aspect, and are not described herein.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for controlling heating of an engine breathing apparatus provided in an embodiment of the present application;
FIG. 2 is a flow chart of another method of controlling heating of an engine breathing apparatus provided in an embodiment of the present application;
FIG. 3 is a schematic view of a heating control device for an engine breathing apparatus according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail below with reference to the accompanying drawings, wherein it is apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
Some of the terms in the embodiments of the present application are explained below to facilitate understanding by those skilled in the art.
(1) ECU (Electronic Control Unit ): the ECU is also called an "engine electronic control unit", and is a controller that performs computation, processing, and judgment according to signals input from the sensors, and then outputs instructions to control the operation of the actuator.
(2) A rack: the rack is test equipment for calibrating the engine, and is used for calibrating various performance parameters of the engine, including engine speed, engine torque, fuel injection quantity, emission and the like.
(3) Engine respirator: engine respirators, i.e. devices used by engines to exhaust gases, are mainly used to maintain the balance of the high temperature gases in the crankcase of the engine block and the pressure outside the engine block during engine operation.
(4) Duty cycle: refers to the proportion of the power-on time relative to the total time in one pulse cycle.
In order to reduce the icing phenomenon of the engine breather in the running process of the vehicle in cold areas, prevent abnormal running of the vehicle and improve the heating control efficiency of the engine breather, the embodiment of the application provides a heating control method, a device, electronic equipment and a medium of the engine breather. In order to better understand the technical solution provided by the embodiments of the present application, a simple description is made here of the basic principle of the solution.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or otherwise described herein. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the accompanying claims.
The following describes the technical scheme provided by the embodiment of the application with reference to the accompanying drawings.
In the running process of an automobile in a cold area, an engine breather is easy to generate icing. Icing of the engine breather can cause oil channeling of the supercharger, even explosion of the rocker arm cover, and the like.
The existing electric heating scheme of the respirator has the main control principle that: after the engine is ignited, electric heating is immediately carried out until the engine is flameout, the electric heating continuously works, the control mode is simple and rough, the service life and reliability of the heater are greatly tested, and heat waste exists in part of working conditions, so that the efficiency of heating control of the engine breather is lower in the running process of the automobile in a cold area.
In view of this, embodiments of the present application provide a method, apparatus, electronic device, and medium for controlling heating of an engine breathing apparatus, by monitoring whether a breathing apparatus heating enabling condition is satisfied based on an operation parameter of the engine; when the heating enabling condition of the respirator is met, judging whether the temperature difference value between the tail end air temperature of the pipeline of the respirator and the inlet air temperature of the pipeline is smaller than a preset temperature difference threshold value or not; if the temperature difference is less than the temperature difference threshold, determining a target duty cycle based on the temperature difference and the line end pressure of the ventilator; the engine breathing apparatus is heated based on the target duty cycle. According to the method, when the respirator heating enabling condition is monitored to be met, if the temperature difference value between the pipeline end air temperature and the pipeline inlet air temperature of the respirator is judged to be smaller than the preset temperature difference threshold value, the target duty ratio is determined based on the temperature difference value and the pipeline end pressure of the respirator, and the engine respirator is heated according to the determined target duty ratio, so that the accurate heating of the respirator based on the respirator heating enabling condition and the target duty ratio is realized, heat waste is reduced, and the heating control efficiency of the engine respirator is improved.
The preferred embodiments of the present application will be described below with reference to the accompanying drawings of the specification, it being understood that the preferred embodiments described herein are for illustration and explanation only, and are not intended to limit the present application, and embodiments of the present application and features of the embodiments may be combined with each other without conflict.
The method for controlling the heating of the engine breather provided in the embodiment of the present application is further explained below. As shown in fig. 1, the method comprises the following steps:
step S101, based on the operating parameters of the engine, monitors whether the ventilator heating enabling conditions are met.
In practice, the ECU may acquire operating parameters of the engine in the vehicle in real time. Based on operating parameters of the engine, whether a ventilator heating enabling condition is met is monitored. It will be appreciated that in embodiments of the present application, when the respirator heat enable condition is met, the electrical heating operation to the engine respirator is set to an enabled state, at which time the control instructions for heating are allowed to take effect; when the respirator heating enable condition is not satisfied, the electric heating operation of the engine respirator is set to an disabled state, and at this time, the control instruction for heating is not allowed to take effect.
Illustratively, whether the ventilator heat enable condition heat_per_condi is satisfied is monitored based on an engine operating parameter run_data.
In one possible implementation, the operating parameters include ambient temperature, and fault indication information; based on the operating parameters of the engine, monitoring whether the respirator heating enabling conditions are met or not can be achieved by the following steps:
and step A01, monitoring the ambient temperature and fault indication information.
Illustratively, the ECU monitors the ambient temperature temp_envi and fault indication information fail_inst.
Step A02, if the ambient temperature is smaller than a preset temperature threshold value and the fault indication information is preset target indication information, determining that the respirator heating enabling condition is met; the target indication information characterizes that no operation fault of a preset type occurs.
In some embodiments of the present application, the target indication information may indicate that no predetermined type of operational failure has occurred. Wherein the preset type of operational failure includes, but is not limited to: the battery voltage of the heating control mechanism is insufficient, the pressure and temperature sensor fails, the voltage acquisition fails or communication failures exist when the operation parameters are acquired.
In some embodiments of the present application, for engine breathing apparatus heating control, a pressure temperature sensor is installed at the end of the breathing apparatus line. The air temperature at the end of the pipeline and the pressure at the end of the pipeline can be obtained through the pressure temperature sensor.
Illustratively, if the ambient temperature Temp_envi is less than a preset temperature threshold Temp_set and the fault indication information fail_inst is a preset target indication information inst_01, determining that a ventilator heating enable condition heat_per_condi is satisfied; the target indication information inst_01 characterizes that no operation fault of a preset type has occurred.
And S102, judging whether the temperature difference between the pipeline end air temperature and the pipeline inlet air temperature of the respirator is smaller than a preset temperature difference threshold value or not when the heating enabling condition of the respirator is met.
Illustratively, when the ventilator heat enable condition heat_per_condi is met, a determination is made as to whether the temperature difference Temp_gap of the ventilator's line end air temperature Temp_pixel and the line inlet air temperature Temp_pixel is less than a preset temperature difference threshold Temp_gap.
In one possible implementation, the temperature difference is determined by:
and B01, determining the inlet air temperature of the pipeline of the respirator based on the ambient temperature.
Illustratively, the ventilator line inlet air temperature Temp_piping is determined based on the ambient temperature Temp_envi.
In one possible implementation, the ventilator line inlet air temperature is determined based on the ambient temperature, specifically with the ambient temperature as the ventilator line inlet air temperature.
In one possible implementation, the ventilator line inlet air temperature is determined based on the ambient temperature, specifically by taking the product of the ambient temperature and a temperature correction factor as the ventilator line inlet air temperature.
In specific implementation, the engine breather can be subjected to calibration test, and temperature correction coefficients corresponding to different environment temperature ranges are obtained. On the basis, the product of the ambient temperature and the temperature correction coefficient is taken as the pipeline inlet air temperature of the respirator.
And B02, taking the difference between the air temperature of the tail end of the pipeline of the respirator and the air temperature of the inlet of the pipeline as a temperature difference.
Illustratively, the difference between the ventilator's line end air temperature Temp_pixel and the line inlet air temperature Temp_pixel is taken as the temperature difference Temp_gap.
Step S103, if the temperature difference is smaller than the temperature difference threshold, determining a target duty cycle based on the temperature difference and the pressure of the end of the pipeline of the respirator.
For example, if the temperature difference Temp_gap is less than the temperature difference threshold Temp_gap, then the target duty cycle Targ_duty_r is determined based on the temperature difference Temp_gap and the line end pressure Pres_piping out of the ventilator.
In one possible implementation, the target duty cycle is determined based on the temperature difference and the line end pressure of the ventilator, specifically by:
And step C01, determining the pipeline end air flow rate of the respirator based on the pipeline end air temperature and the pipeline end pressure of the respirator.
Illustratively, the line end air flow rate Sp_pixel of the ventilator is determined based on the line end air temperature Temp_pixel and the line end pressure Pres_pixel of the ventilator.
And step C02, determining a preselected duty ratio corresponding to the temperature difference and the air flow rate at the tail end of the pipeline according to the preset mapping relation of the temperature difference information, the airspeed information and the duty ratio information.
In specific implementation, the mapping relation of the temperature difference information, the airspeed information and the duty ratio information can be obtained through a bench test of an engine or a vehicle calibration test. The temperature difference information is the difference between the air temperature at the tail end of a pipeline of the engine respirator and the air temperature at the inlet of the pipeline; airspeed information is the value of the air flow rate at the end of the pipeline of the engine breather; the duty cycle information is a preferred duty cycle value corresponding to the temperature difference information and the airspeed information.
Illustratively, a preselected duty cycle cho_duty_r corresponding to the temperature difference temp_gap and the line end air flow rate spe_pipe out is determined according to a preset mapping relationship of temperature difference information, airspeed information, and duty cycle information, relationship_1.
Step C03, determining a target duty cycle based on the preselected duty cycle.
Illustratively, the target duty cycle targ_duty_r is determined based on the preselected duty cycle cho_duty_r.
In one possible implementation, the target duty cycle is determined based on the preselected duty cycle, specifically by:
and D01, if the preselected duty ratio is greater than or equal to a preset first duty ratio, taking the value of the first duty ratio as a target duty ratio.
For example, if the preselected duty cycle cho_duty_r is equal to or greater than the preset first duty cycle duty_r_max, the value of the first duty cycle duty_r_1 is taken as the target duty cycle targ_duty_r.
Step D02, if the preselected duty ratio is smaller than or equal to a preset second duty ratio, taking the value of the second duty ratio as a target duty ratio; the second duty cycle is less than the first duty cycle.
Illustratively, if the preselected duty cycle cho_duty_r is less than or equal to the preset second duty cycle duty_r_2, the value of the second duty cycle duty_r_2 is taken as the target duty cycle targ_duty_r; the second duty ratio duty_r_2 is smaller than the first duty ratio duty_r_1.
And D03, if the value of the preselected duty ratio is between the first duty ratio and the second duty ratio, taking the value of the preselected duty ratio as the target duty ratio.
Illustratively, if the value of the preselected duty cycle cho_duty_r is between the first duty cycle duty_r_1 and the second duty cycle duty_r_2, the value of the preselected duty cycle cho_duty_r is taken as the target duty cycle targ_duty_r.
According to the heating control method of the engine breather, if the preselected duty ratio is greater than or equal to the preset first duty ratio, the numerical value of the first duty ratio is used as the target duty ratio; if the preselected duty ratio is smaller than or equal to a preset second duty ratio, taking the value of the second duty ratio as a target duty ratio; the second duty cycle is less than the first duty cycle; if the value of the preselected duty cycle is between the first duty cycle and the second duty cycle, the value of the preselected duty cycle is taken as the target duty cycle. The method can realize the upper limit and the lower limit of the duty ratio in the process of determining the target duty ratio through the first duty ratio and the second duty ratio, realize the output of the duty ratio after the limitation of the maximum value and the minimum value to obtain the target duty ratio, realize the simple and efficient control of the numerical range of the target duty ratio, and improve the efficiency of the heating control of the engine respirator.
Step S104, heating the engine breathing apparatus based on the target duty cycle.
When the method is implemented, if the respirator heating enabling conditions are met and the temperature difference is smaller than the temperature difference threshold, the relay is closed to electrically heat the respirator, and the electrical heating of the respirator is controlled by adopting the duty ratio; otherwise no electrical heating of the respirator is performed. Specifically, during the heating control of the engine breathing apparatus, the engine breathing apparatus is heated based on the target duty ratio.
Illustratively, electrical heating of the ventilator employs duty cycle control. During the heating control of the engine breathing apparatus, the engine breathing apparatus is heated based on the target duty ratio targ_duty_r.
The heating control method of the engine breather shown in the figure 1 monitors whether the breather heating enabling condition is met or not based on the operation parameters of the engine; when the heating enabling condition of the respirator is met, judging whether the temperature difference value between the tail end air temperature of the pipeline of the respirator and the inlet air temperature of the pipeline is smaller than a preset temperature difference threshold value or not; if the temperature difference is less than the temperature difference threshold, determining a target duty cycle based on the temperature difference and the line end pressure of the ventilator; the engine breathing apparatus is heated based on the target duty cycle. According to the method, when the respirator heating enabling condition is monitored to be met, if the temperature difference value between the pipeline end air temperature and the pipeline inlet air temperature of the respirator is judged to be smaller than the preset temperature difference threshold value, the target duty ratio is determined based on the temperature difference value and the pipeline end pressure of the respirator, and the engine respirator is heated according to the determined target duty ratio, so that the accurate heating of the respirator based on the respirator heating enabling condition and the target duty ratio is realized, heat waste is reduced, and the heating control efficiency of the engine respirator is improved.
In one possible implementation, after determining the target duty cycle based on the preselected duty cycle, the method further performs, prior to heating the engine breathing apparatus based on the target duty cycle: if the pressure of the tail end of the pipeline is monitored to be larger than the preset pressure threshold value, taking the value of the preset third duty ratio as the target duty ratio; the third duty cycle is greater than or equal to the first duty cycle.
In particular embodiments, the maximum duty cycle output is maximized when a pressure in the ventilator tube is detected to be greater than a pressure threshold, and maximum capacity heating is performed.
For example, if it is detected that the line end pressure pres_pipe is greater than the preset pressure threshold pres_set, taking the value of the preset third duty cycle duty_r_3 as the target duty cycle targ_duty_r; the third duty ratio duty_r_3 is greater than or equal to the first duty ratio duty_r_1.
According to the heating control method of the engine breather, if the pressure at the tail end of the pipeline is monitored to be larger than the preset pressure threshold, the value of the preset third duty ratio is taken as the target duty ratio; the third duty cycle is greater than or equal to the first duty cycle. The method determines that the pressure at the tail end of the pipeline is larger than the preset pressure threshold, can identify the icing blocking state of the engine breather, can realize more efficient value control of the target duty ratio so as to perform stable heating, can realize the assignment of the preset peak value of the duty ratio so as to perform rapid heating, reduce the abnormal operation of the engine breather of the vehicle, can more effectively perform control intervention on the heating of the engine breather, and improves the heating control efficiency of the engine breather.
Another method for controlling the heating of an engine breathing apparatus provided in accordance with embodiments of the present application is described below. The heating control method of the engine respirator, as shown in fig. 2, comprises the following steps:
in step S201, an operation parameter of the engine is monitored.
Wherein the operating parameters include ambient temperature, and fault indication information.
Step S202, based on the operating parameters, monitors whether a ventilator heating enabling condition is met.
Specifically, if the ambient temperature is less than a preset temperature threshold and the fault indication information is a preset target indication information, determining that a ventilator heating enabling condition is met. The target indication information indicates that no operation fault of a preset type occurs.
Step S203, when the ventilator heating enabling condition is satisfied, determining a temperature difference between the line end air temperature and the line inlet air temperature of the ventilator.
Specifically, determining the temperature difference may be specifically achieved by: determining a ventilator line inlet air temperature based on the ambient temperature; taking the difference between the air temperature of the tail end of the pipeline of the respirator and the air temperature of the inlet of the pipeline as a temperature difference.
In step S204, each time a temperature difference is determined, it is determined whether the obtained temperature difference is smaller than a preset temperature difference threshold.
In the implementation, a temperature difference is obtained when a temperature difference is determined, and whether the obtained temperature difference is smaller than a preset temperature difference threshold value is judged.
In step S205, if the temperature difference is less than the temperature difference threshold, then the line end air flow rate of the ventilator is determined based on the line end air temperature and the line end pressure of the ventilator.
Step S206, determining a preselected duty ratio corresponding to the temperature difference and the air flow rate at the tail end of the pipeline according to the preset mapping relation of the temperature difference information, the airspeed information and the duty ratio information.
Step S207, if the preselected duty cycle is greater than or equal to a preset first duty cycle, taking the value of the first duty cycle as a target duty cycle; if the preselected duty ratio is smaller than or equal to a preset second duty ratio, taking the value of the second duty ratio as a target duty ratio; the second duty cycle is less than the first duty cycle; if the value of the preselected duty cycle is between the first duty cycle and the second duty cycle, the value of the preselected duty cycle is taken as the target duty cycle.
Step S208, if the pressure of the tail end of the pipeline is monitored to be larger than a preset pressure threshold value, taking the value of a preset third duty ratio as a target duty ratio; the third duty cycle is greater than or equal to the first duty cycle.
Step S209, heating the engine breathing apparatus based on the target duty cycle.
The process of the heating control of the engine breather in steps S201 to S209 may be performed with reference to the specific process of the foregoing embodiment, and the same is not repeated here.
The heating control method of the engine breather is simple and easy to implement, achieves the purpose of heating control of the engine breather through ECU program setting, optimizes the heating control of the engine breather, realizes the accurate heating of the breather based on the breather heating enabling condition and the target duty ratio, reduces heat waste, and accordingly improves the efficiency of the heating control of the engine breather.
Based on the same inventive concept, the embodiment of the application also provides a heating control device of the engine respirator. As shown in fig. 3, the apparatus includes:
a first monitoring unit 301 for monitoring whether a ventilator heating enabling condition is met based on an operating parameter of the engine;
a second monitoring unit 302, configured to determine whether a temperature difference between a pipeline end air temperature and a pipeline inlet air temperature of the ventilator is less than a preset temperature difference threshold when a ventilator heating enabling condition is satisfied;
a parameter determination unit 303 for determining a target duty cycle based on the temperature difference and the line end pressure of the ventilator if the temperature difference is less than the temperature difference threshold;
A heating control unit 304 for heating the engine breathing apparatus based on the target duty cycle.
In one possible implementation, the operating parameters include ambient temperature, and fault indication information; the first monitoring unit 301 is specifically configured to:
monitoring the ambient temperature and fault indication information;
if the ambient temperature is less than a preset temperature threshold and the fault indication information is preset target indication information, determining that the respirator heating enabling condition is met; the target indication information characterizes that no operation fault of a preset type occurs.
In one possible implementation, the second monitoring unit 302 is specifically configured to:
determining a ventilator line inlet air temperature based on the ambient temperature;
taking the difference between the air temperature of the tail end of the pipeline of the respirator and the air temperature of the inlet of the pipeline as a temperature difference.
In a possible implementation manner, the parameter determining unit 303 is specifically configured to:
determining a line end air flow rate of the ventilator based on the line end air temperature and the line end pressure of the ventilator;
determining a preselected duty ratio corresponding to the temperature difference value and the air flow rate at the tail end of the pipeline according to the mapping relation of preset temperature difference information, airspeed information and duty ratio information;
The target duty cycle is determined based on the preselected duty cycle.
In a possible implementation manner, the parameter determining unit 303 is specifically configured to:
if the preselected duty ratio is greater than or equal to a preset first duty ratio, taking the value of the first duty ratio as a target duty ratio;
if the preselected duty ratio is smaller than or equal to a preset second duty ratio, taking the value of the second duty ratio as a target duty ratio; the second duty cycle is less than the first duty cycle;
if the value of the preselected duty cycle is between the first duty cycle and the second duty cycle, the value of the preselected duty cycle is taken as the target duty cycle.
In a possible implementation, the parameter determining unit 303 is further configured to:
if the pressure of the tail end of the pipeline is monitored to be larger than the preset pressure threshold value, taking the value of the preset third duty ratio as the target duty ratio; the third duty cycle is greater than or equal to the first duty cycle.
Based on the same technical concept, the embodiment of the present application further provides an electronic device, and referring to fig. 4, the electronic device is configured to implement the methods described in the above embodiments of the methods, for example, implement the method shown in fig. 1, where the electronic device may include a memory 401, a processor 402, an input unit 403, and a display panel 404.
A memory 401 for storing a computer program executed by the processor 402. The memory 401 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function, and the like; the storage data area may store data created according to the use of the electronic device, etc. The processor 402 may be a central processing unit (central processing unit, CPU), or a digital processing unit, etc. An input unit 403 may be used to obtain user instructions entered by a user. The display panel 404 is configured to display information input by a user or information provided to the user, where in this embodiment of the present application, the display panel 404 is mainly configured to display interfaces of applications in a terminal device and control entities displayed in the display interfaces. Alternatively, the display panel 404 may be configured in the form of a liquid crystal display (liquid crystal display, LCD) or an OLED (organic light-emitting diode) or the like.
The specific connection medium between the memory 401, the processor 402, the input unit 403, and the display panel 404 is not limited in the embodiment of the present application. In the embodiment of the present application, the memory 401, the processor 402, the input unit 403, and the display panel 404 are connected by the bus 405 in fig. 4, and the bus 405 is indicated by a thick line in fig. 4, and the connection manner between other components is only schematically illustrated, but not limited thereto. The bus 405 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in fig. 4, but not only one bus or one type of bus.
The memory 401 may be a volatile memory (RAM) such as a random-access memory (RAM); the memory 401 may also be a nonvolatile memory (non-volatile memory), such as a read-only memory, a flash memory (flash memory), a Hard Disk Drive (HDD) or a Solid State Drive (SSD), or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto. Memory 401 may be a combination of the above.
A processor 402 for invoking a computer program stored in the memory 401 to perform the method of the embodiment as shown in fig. 1.
The embodiment of the application also provides a computer readable storage medium which stores computer executable instructions required to be executed by the processor, and the computer readable storage medium contains a program for executing the processor.
In some possible embodiments, aspects of a method of controlling the heating of an engine breathing apparatus provided herein may also be implemented in the form of a program product comprising program code for causing a terminal device to carry out the steps of a method of controlling the heating of an engine breathing apparatus according to various exemplary embodiments of the present application as described herein above, when the program product is run on the terminal device. For example, the electronic device may perform the embodiment shown in FIG. 2.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium would include the following: an electrical connection having one or more wires, a portable disk, a hard disk, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The heating control program product for an engine breathing apparatus of embodiments of the present application may employ a portable compact disc read only memory (CD-ROM) and include program code and may be run on a computing device. However, the program product of the present application is not limited thereto, and in this document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The readable signal medium may include a data signal propagated in baseband or as part of a carrier wave with readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations of the present application may be written in any combination of one or more programming languages, including an entity oriented programming language such as Java, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device, partly on a remote computing device, or entirely on the remote computing device or server. In the case of remote computing devices, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., connected via the Internet using an Internet service provider).
It should be noted that although several units or sub-units of the apparatus are mentioned in the above detailed description, such a division is merely exemplary and not mandatory. Indeed, the features and functions of two or more of the elements described above may be embodied in one element in accordance with embodiments of the present application. Conversely, the features and functions of one unit described above may be further divided into a plurality of units to be embodied.
Furthermore, although the operations of the methods of the present application are depicted in the drawings in a particular order, this is not required to or suggested that these operations must be performed in this particular order or that all of the illustrated operations must be performed in order to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step to perform, and/or one step decomposed into multiple steps to perform.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable file processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable file processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable file processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable file processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.
Claims (10)
1. A method of controlling heating of an engine breathing apparatus, the method comprising:
Monitoring whether a respirator heating enabling condition is met based on an operating parameter of the engine;
when the heating enabling condition of the respirator is met, judging whether the temperature difference value between the pipeline tail end air temperature and the pipeline inlet air temperature of the respirator is smaller than a preset temperature difference threshold value or not;
if the temperature difference is less than the temperature difference threshold, determining a target duty cycle based on the temperature difference and a line end pressure of the ventilator;
the engine breathing apparatus is heated based on the target duty cycle.
2. The method of claim 1, wherein the operating parameters include ambient temperature, and fault indication information; the monitoring of whether a respirator heating enabling condition is met based on an operating parameter of the engine comprises:
monitoring the ambient temperature and the fault indication information;
if the ambient temperature is less than a preset temperature threshold and the fault indication information is preset target indication information, determining that a respirator heating enabling condition is met; the target indication information indicates that no operation fault of a preset type occurs.
3. The method of claim 1, wherein the temperature difference is determined by:
Determining a conduit inlet air temperature of the respirator based on the ambient temperature;
and taking the difference value between the air temperature of the tail end of the pipeline of the respirator and the air temperature of the inlet of the pipeline as the temperature difference value.
4. A method according to any one of claims 1 to 3, wherein said determining a target duty cycle based on said temperature difference and a line end pressure of said ventilator comprises:
determining a line end air flow rate of the ventilator based on the line end air temperature and the line end pressure of the ventilator;
determining a preselected duty ratio corresponding to the temperature difference value and the air flow rate at the tail end of the pipeline according to a mapping relation of preset temperature difference information, airspeed information and duty ratio information;
the target duty cycle is determined based on the preselected duty cycle.
5. The method of claim 4, wherein the determining the target duty cycle based on the preselected duty cycle comprises:
if the preselected duty ratio is greater than or equal to a preset first duty ratio, taking the value of the first duty ratio as the target duty ratio;
if the preselected duty ratio is smaller than or equal to a preset second duty ratio, taking the value of the second duty ratio as the target duty ratio; the second duty cycle is less than the first duty cycle;
And if the value of the preselected duty cycle is between the first duty cycle and the second duty cycle, taking the value of the preselected duty cycle as the target duty cycle.
6. The method of claim 5, wherein after the determining the target duty cycle based on the preselected duty cycle, the method further comprises, prior to heating the engine breathing apparatus based on the target duty cycle:
if the pressure of the tail end of the pipeline is monitored to be larger than a preset pressure threshold value, taking the value of a preset third duty ratio as the target duty ratio; the third duty cycle is greater than or equal to the first duty cycle.
7. A heating control device for an engine breathing apparatus, the device comprising:
a first monitoring unit for monitoring whether a ventilator heating enabling condition is satisfied based on an operating parameter of the engine;
the second monitoring unit is used for judging whether the temperature difference value between the pipeline tail end air temperature and the pipeline inlet air temperature of the respirator is smaller than a preset temperature difference threshold value or not when the heating enabling condition of the respirator is met;
a parameter determination unit for determining a target duty cycle based on the temperature difference and a line end pressure of the ventilator if the temperature difference is less than the temperature difference threshold;
And the heating control unit is used for heating the engine respirator based on the target duty ratio.
8. The apparatus of claim 7, wherein the operating parameters include ambient temperature, and fault indication information; the first monitoring unit is specifically configured to:
monitoring the ambient temperature and the fault indication information;
if the ambient temperature is less than a preset temperature threshold and the fault indication information is preset target indication information, determining that a respirator heating enabling condition is met; the target indication information indicates that no operation fault of a preset type occurs.
9. An electronic device comprising a processor and a memory, wherein the memory stores program code that, when executed by the processor, causes the processor to perform the steps of the method of any of claims 1-6.
10. A computer-readable storage medium having a computer program stored therein, characterized in that: the computer program, when executed by a processor, implements the method of any of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311373053.3A CN117627750A (en) | 2023-10-20 | 2023-10-20 | Heating control method and device of engine respirator, electronic equipment and medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311373053.3A CN117627750A (en) | 2023-10-20 | 2023-10-20 | Heating control method and device of engine respirator, electronic equipment and medium |
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| CN117627750A true CN117627750A (en) | 2024-03-01 |
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| CN202311373053.3A Pending CN117627750A (en) | 2023-10-20 | 2023-10-20 | Heating control method and device of engine respirator, electronic equipment and medium |
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| Country | Link |
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| CN (1) | CN117627750A (en) |
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