CN111102348B - Control method for oil pumping of oil pump motor and automobile controller - Google Patents
Control method for oil pumping of oil pump motor and automobile controller Download PDFInfo
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- CN111102348B CN111102348B CN201811261194.5A CN201811261194A CN111102348B CN 111102348 B CN111102348 B CN 111102348B CN 201811261194 A CN201811261194 A CN 201811261194A CN 111102348 B CN111102348 B CN 111102348B
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- oil pumping
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
- F16H61/421—Motor capacity control by electro-hydraulic control means, e.g. using solenoid valves
Abstract
The embodiment of the application discloses control method and automobile controller of oil pump motor is refueled, trigger the detection to each condition of refueling by door opening signal, in case the door is opened, the controller is awaken up promptly, and then detect hydraulic system's oil pressure and whether be less than the oil pressure limit value, when hydraulic system's oil pressure is less than the required minimum oil pressure of solenoid valve drive executor action, continue to detect whether the condition of refueling satisfies, when the condition of refueling satisfies, automobile controller just sends the instruction of refueling to hydraulic system's oil pump motor, so that oil pump motor is refueled according to the instruction of refueling and is established the oil pressure that is not less than the oil pressure limit value, make the solenoid valve can normally work according to the sufficient oil pressure that hydraulic system provided. Compared with the prior art, the method can enable the electromagnetic valve to acquire sufficient oil pressure in advance, so that the electromagnetic valve enters a working state in advance, and the waiting time for starting the vehicle by a driver is saved.
Description
Technical Field
The application relates to the technical field of automobile control, in particular to a control method for oiling an oil pump motor and an automobile controller.
Background
The electrically driven speed changing box for automobile is one electrically controlled hydraulic structure comprising hydraulic system, executor, etc. The electromagnetic valve in the hydraulic system is used for driving an actuator in the gearbox to act, such as driving gear shifting or clutch state changing. Solenoid valves rely on the hydraulic system to provide sufficient oil pressure for proper operation.
At present, when the oil pressure provided by a hydraulic system does not reach the working oil pressure of an electromagnetic valve, in the process of electrifying a driver operation controller, a sufficient oil pressure is generally established by pumping oil from an oil pump motor of the hydraulic system, and then the oil pressure is provided for the electromagnetic valve to enable the electromagnetic valve to work normally. However, in some cases, after the controller is powered on, the speed of the hydraulic system for establishing oil pressure is too low, so that the electromagnetic valve cannot enter a working state quickly, and normal starting of the automobile is affected.
Disclosure of Invention
The application provides a control method for oiling an oil pump motor and an automobile controller, and aims to solve the problem that the normal starting of an automobile is influenced due to too low oil pressure building speed.
The embodiment of the application discloses the following technical scheme:
the application provides a control method for oil pumping of an oil pump motor in a first aspect. The following describes in detail a control method for oil pumping of an oil pump motor according to a first aspect of the present application.
The application provides a control method for oiling an oil pump motor, which is applied to an automobile controller, and comprises the following steps:
after the automobile controller is awakened based on the automobile door opening signal, responding to the automobile door opening signal, detecting whether the oil pressure of a hydraulic system is lower than an oil pressure limit value, and if so, detecting whether an oil pumping condition is met; the oil pressure limit value is the minimum oil pressure required by the electromagnetic valve to drive the actuator to act;
if the oil pumping condition is met, sending an oil pumping instruction to an oil pump motor; and the oil pumping command is used for pumping oil to the oil pump motor so as to establish oil pressure not lower than the oil pressure limit value.
Optionally, the oil-removing conditions include:
the voltage signal of the storage battery is effective, and the voltage of the storage battery is greater than a first voltage threshold value; the first voltage threshold is the minimum voltage of the storage battery for ensuring that the automobile controller is normally powered on once after the oil pump motor is powered on according to the oil supply instruction.
Optionally, the voltage signal of the battery effectively includes:
determining that the noise voltage is smaller than a second voltage threshold value based on the noise voltage of the storage battery, and the duration of the noise voltage which is continuously smaller than the second voltage threshold value is larger than a first time threshold value; the noise voltage is a fluctuation voltage generated by the storage battery under the interference influence of the automobile controller and/or the oil pump motor; the second voltage threshold is a minimum noise voltage that causes the voltage signal of the battery to be invalid.
Optionally, the oil-removing conditions include:
and the lines of the solenoid valve and/or the oil pressure sensor have no faults.
Optionally, after the oil pumping instruction is sent to the oil pump motor, the method further includes:
timing from the starting time of oil pumping of the oil pump motor to obtain the oil pumping duration; acquiring a wakeup period according to the starting time of the automobile controller and the starting time of the oil pumping; acquiring the oil pumping duty ratio according to the oil pumping duration and the awakening period;
judging whether the oil pumping duration exceeds a second time threshold value to obtain a first judgment result, and judging whether the oil pumping duty ratio exceeds a preset ratio to obtain a second judgment result;
if the first judgment result and/or the second judgment result are/is yes, sending an oil pumping stopping instruction to an oil pump motor; and the oil pumping stopping instruction is used for stopping the oil pumping of the oil pump motor.
Optionally, after the oil pumping instruction is sent to the oil pump motor, the method further includes:
detecting whether the oil pumping condition is met, and if not, sending an oil pumping stopping instruction to an oil pump motor; and the oil pumping stopping instruction is used for stopping the oil pumping of the oil pump motor.
Optionally, after the oil pumping instruction is sent to the oil pump motor, the method further includes:
detecting whether the oil pressure of the hydraulic system is lower than the oil pressure limit value, and if not, sending an oil pumping stopping instruction to an oil pump motor; and the oil pumping stopping instruction is used for stopping the oil pumping of the oil pump motor.
Optionally, after the oil pump motor stops the oil pumping this time and before the automobile controller starts to power on, the method further includes:
deactivating the function of sending the pump command to the pump motor.
A second aspect of the present application provides an automotive controller. The following describes in detail an automotive controller provided in a second aspect of the present application.
The application provides an automobile controller includes: the device comprises a detection module and an instruction sending module;
the detection module is used for responding to a vehicle door opening signal after the vehicle controller is awakened based on the vehicle door opening signal, detecting whether the oil pressure of a hydraulic system is lower than an oil pressure limit value or not, and detecting whether an oil pumping condition is met or not if the oil pressure of the hydraulic system is lower than the oil pressure limit value; the oil pressure limit value is the minimum oil pressure required by the electromagnetic valve to drive the actuator to act;
the instruction sending module is used for sending an oil pumping instruction to the oil pump motor if the oil pumping condition is met; and the oil pumping command is used for pumping oil to the oil pump motor so as to establish oil pressure not lower than the oil pressure limit value.
Compared with the prior art, the method has the following beneficial effects:
according to the oil pump motor oil pumping control method, detection of each oil pumping condition is triggered by a vehicle door opening signal, once a vehicle door is opened, a controller is awakened, whether the oil pressure of a hydraulic system is lower than an oil pressure limit value or not is detected, and when the oil pressure of the hydraulic system is lower than the minimum oil pressure required by the action of an electromagnetic valve driving actuator, the fact that the electromagnetic valve is difficult to work normally depending on the current oil pressure is indicated. Therefore, in the method, whether the oil pumping condition is met or not is continuously detected, and when the oil pumping condition is met, the automobile controller sends the oil pumping command to the oil pump motor of the hydraulic system, so that the oil pump motor pumps oil according to the oil pumping command to establish the oil pressure which is not lower than the oil pressure limit value, and the electromagnetic valve can normally work according to the sufficient oil pressure provided by the hydraulic system.
In the method, because the time for opening the vehicle door by the driver is earlier than the time for electrifying the operation controller, before the driver operates the controller to electrify, the vehicle controller responds to a vehicle door opening signal and can send an oiling instruction according to the detection result of the oil pressure condition and the oiling condition of the hydraulic system, so that the hydraulic system can quickly establish the oil pressure, and the oil pressure is not required to be established after the driver operates the controller to electrify. Therefore, compared with the prior art, the method can enable the solenoid valve to acquire sufficient oil pressure in advance, further enable the solenoid valve to enter the working state in advance, and save waiting time for starting of a driver.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a flowchart of a control method for pumping oil to an oil pump motor according to an embodiment of the present disclosure;
FIG. 2 is a flow chart of another control method for pumping oil from an oil pump motor according to an embodiment of the present disclosure;
fig. 3 is a flowchart of another control method for pumping oil from an oil pump motor according to an embodiment of the present disclosure;
fig. 4 is a flowchart of another control method for pumping oil from an oil pump motor according to an embodiment of the present disclosure;
fig. 5 is a flowchart of a control method for pumping oil from an oil pump motor according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of an automobile controller according to an embodiment of the present application.
Detailed Description
In recent years, with the improvement of awareness of energy conservation and emission reduction of people, new energy automobiles are widely used. The electric drive gearbox is matched with the automobile, so that the running economy and the dynamic property of the new energy automobile can be obviously improved. The electrically-driven gearbox comprises a hydraulic system, an actuator and the like, wherein the hydraulic system specifically drives the actuator to act through an electromagnetic valve, for example, the state of a clutch is changed, and the gear is switched. However, the normal operation of the solenoid valve requires a sufficient oil pressure to be supplied by the hydraulic system, and if the oil pressure is not sufficiently supplied, the operation of the solenoid valve is affected, and the operation of the actuator is affected.
At present, for the condition that the oil pressure provided by a hydraulic system is insufficient, in the process that a driver operates a PowerMode key to electrify an automobile controller, oil is pumped by an oil pump motor of the hydraulic system, and the oil pressure capable of enabling an electromagnetic valve to normally work is established. However, the inventor has found through research that when the oil pressure is established by the method, a driver needs to wait for a long time after the operation controller is powered on, and the hydraulic system can establish sufficient oil pressure, so that the solenoid valve is difficult to enter the working state in a short time, and the normal starting of the automobile is influenced.
In order to solve the problems, the inventor provides a control method for oil pumping of an oil pump motor and an automobile controller through research, a vehicle door opening signal is used for triggering detection of an oil pressure state and an oil pumping condition, if the oil pressure state and the oil pumping condition meet requirements, the oil pump motor is pumped, oil pressure capable of enabling an electromagnetic valve to normally work is quickly established, and the problem that normal starting of an automobile is influenced due to too low oil pressure establishing speed is further solved.
The following embodiments of the present application will be further described with reference to the accompanying drawings, and the implementation of the present application is not limited by the following embodiments, and the present application is within the protection scope of the present application as long as the method concept and technical solution of the present application are modified or directly applied to other occasions without modification.
Referring to fig. 1, the figure is a flowchart of a control method for pumping oil for an oil pump motor according to an embodiment of the present application.
As shown in fig. 1, a method for controlling oil pumping of an oil pump motor provided in an embodiment of the present application includes:
s101: after the automobile controller is awakened based on the automobile door opening signal, the automobile controller responds to the automobile door opening signal to detect whether the oil pressure of the hydraulic system is lower than an oil pressure limit value, and if so, whether the oil pumping condition is met is detected.
The door opening signal may be generated by an operation of the occupant to open the door. The opened vehicle door can be a main cab door, and can also be other vehicle doors besides the main cab door. In addition, the door opening signal may be generated by an opening operation of a single door or may be generated by an opening operation of a plurality of doors. Since the opening operation of the main driving door is closely related to the intention of the driver to start driving, the method is implemented to avoid that the intention of starting driving is predicted by mistake due to the opening operation of other doors in some cases, and the door opening signal in this embodiment can be generated by the opening operation of the main driving door.
After the door is opened, the vehicle controller is awakened by the door opening signal, and in order to establish the oil pressure as soon as possible, in this embodiment, the vehicle controller starts to detect whether the oil pressure of the hydraulic system is lower than the oil pressure limit value or not in response to the door opening signal.
The oil pressure limit is a minimum oil pressure required for the solenoid valve to drive the actuator to operate. Actuators driven by the solenoid valves include clutches and synchronizers, and the like. The solenoid valve needs to ensure the action of being able to drive the synchronizer before the vehicle starts. Therefore, the oil pressure limit may also be understood as the minimum oil pressure required by the solenoid valve to actuate the synchronizer. The oil pressure limit is related to the oil temperature, since the minimum oil pressure required to actuate the solenoid driven synchronizer also varies when the ambient temperature changes. When the oil temperature is higher, the minimum oil pressure required by the electromagnetic valve to drive the synchronizer to act is lower, and a lower oil pressure limit value can be set; when the oil temperature is low, the minimum oil pressure required by the electromagnetic valve to drive the synchronizer to act is high, and a high oil pressure limit value can be set. As an example, the oil pressure limit may be adaptively adjusted according to the temperature measured by an oil temperature sensor or a temperature sensor in the vehicle, and when the oil temperature or the room temperature is higher, the oil pressure limit is automatically adjusted downward; when the oil temperature or room temperature is low, the oil pressure limit is automatically adjusted upward.
When the oil pressure of the hydraulic system is lower than the oil pressure limit value, the current oil pressure of the hydraulic system is not up to the working oil pressure of the electromagnetic valve, and sufficient oil pressure needs to be established; when the oil pressure of the hydraulic system is not lower than the oil pressure limit value, the hydraulic system can provide sufficient oil pressure for the solenoid valve to normally work, so that measures are not needed to be taken to pump oil to the oil pump motor.
In the case that the oil pressure of the hydraulic system is lower than the oil pressure limit value, whether the oil pumping condition is met or not needs to be detected before the oil pressure is established.
In this embodiment, the oil pumping conditions that need to be detected by the vehicle controller may include: the voltage signal of the storage battery is effective, and the voltage of the storage battery is larger than the first voltage threshold value.
The storage battery is easily influenced by interference of an automobile controller and/or the oil pump motor, so that the generated fluctuating voltage can be also called as noise voltage. When the noise voltage is too large, the validity of the battery voltage signal can be affected. In this embodiment, the module for detecting the voltage of the battery in the bottom layer of the automobile controller may determine the validity of the voltage signal of the battery based on the magnitude of the noise voltage of the battery. As a specific example, if the noise voltage is less than a second voltage threshold and the duration of the noise voltage being less than the second voltage threshold is greater than a first time threshold, it is determined that the voltage signal of the battery is valid. In this example, the second voltage threshold refers to a minimum noise voltage that causes the voltage signal of the battery to be invalid, and the second voltage threshold may be set in advance according to history data of the influence of the noise voltage on the voltage signal.
The automobile controller detects whether the voltage of the storage battery is larger than the first voltage threshold value, which can be understood as detecting whether the voltage of the storage battery is sufficient. In the foregoing oil-pumping condition, the first voltage threshold refers to a minimum voltage at which the storage battery can ensure that the vehicle controller is normally powered on once after the oil pump motor pumps oil according to the oil-pumping instruction. Because the voltage of the storage battery can be reduced by pumping oil from the oil pump motor, if the voltage of the storage battery after pumping oil and reducing is too low, normal power-on of the controller cannot be guaranteed, the pumping oil is invalid, and even if the current oil pressure of the hydraulic system is lower than the oil pressure limit value, the power of the storage battery cannot guarantee normal power-on and normal starting running of the vehicle. Only when the voltage of the storage battery is larger than the first voltage threshold value, the storage battery can be used for ensuring that the automobile controller is normally powered on once after the oil pump motor pumps oil.
It should be noted that the first voltage threshold may be preset according to the oil temperature. The lower the oil temperature is, the higher the oil pumping voltage is, and correspondingly, a higher first voltage threshold value can be set; the higher the oil temperature, the lower the pumping pull-down voltage, and accordingly, a lower first voltage threshold may be set. As an optional implementation manner, in this embodiment, the first voltage threshold may be adaptively and automatically adjusted according to the oil temperature measured by the oil temperature sensor, and the lower the oil temperature is, the upward adjustment of the first voltage threshold is performed; the higher the oil temperature, the lower the first voltage threshold is adjusted.
If the voltage signal of the storage battery is invalid and/or the voltage of the storage battery is not greater than the first voltage threshold, the detection result is as follows: the oil-removing condition is not satisfied.
The oil pumping condition that automobile controller needs to detect can also include: the lines of the solenoid valve and/or the oil pressure sensor are/is faultless. If the oil pumping condition only includes that the line of the electromagnetic valve has no fault, when the line of the electromagnetic valve is detected to have the fault, the detection result is as follows: the oiling condition is not met; if the oil pumping condition only includes that the oil pressure sensor has no fault, when the oil pressure sensor is detected to have the fault, the detection result is as follows: the oiling condition is not met; if the oil pumping condition comprises that the line of the electromagnetic valve and the oil pressure sensor have no fault, the line of the electromagnetic valve and/or the oil pressure sensor is/are detected to have a fault, and the detection result is as follows: the oil-removing condition is not satisfied.
The reason why whether the pumping condition is satisfied is detected is that if the pumping condition is not satisfied, it indicates that the pumping condition is affected by the factors of insufficient voltage of the battery, ineffective voltage signal, failure of the solenoid valve and the oil pressure sensor, etc., and normal starting and/or running of the vehicle cannot be guaranteed even if the oil pressure is established by pumping, in which case, the pumping is ineffective and the oil pump motor does not need to perform the pumping. Therefore, when the automobile controller detects that the oil pressure of the hydraulic system is lower than the oil pressure limit value, the automobile controller can also detect whether the oil pumping condition is met before the oil pressure is established.
S102: and if the oil pumping condition is met, the automobile controller sends an oil pumping instruction to the oil pump motor.
If the oiling condition is met, the factors influencing smooth oiling and normal starting of the automobile after oiling are detected to be qualified, and the oil pressure can be smoothly established under the condition that the oiling condition is met. Therefore, if the vehicle controller detects that the oil pumping condition is satisfied, an oil pumping command for pumping the oil pump motor to establish an oil pressure not lower than the oil pressure limit is sent to the oil pump motor.
Furthermore, when the oil pressure of the hydraulic system is sufficiently built, the oil pressure can be provided for the electromagnetic valve, so that the electromagnetic valve can normally work according to the sufficient oil pressure provided by the hydraulic system to drive the actuator to act.
The control method for oil pumping of the oil pump motor provided by the embodiment of the application is as above. According to the method, detection of each oil pumping condition is triggered by a vehicle door opening signal, once a vehicle door is opened, a controller is awakened, whether the oil pressure of a hydraulic system is lower than an oil pressure limit value or not is further detected, and when the oil pressure of the hydraulic system is lower than the minimum oil pressure required by an electromagnetic valve to drive an actuator to act, the electromagnetic valve is indicated to be difficult to work normally depending on the current oil pressure. Therefore, in the method, whether the oil pumping condition is met or not is continuously detected, and when the oil pumping condition is met, the automobile controller sends the oil pumping command to the oil pump motor of the hydraulic system, so that the oil pump motor pumps oil according to the oil pumping command to establish the oil pressure which is not lower than the oil pressure limit value, and the electromagnetic valve can normally work according to the sufficient oil pressure provided by the hydraulic system.
In the method, because the time for opening the vehicle door by the driver is earlier than the time for electrifying the operation controller, before the driver operates the controller to electrify, the vehicle controller responds to a vehicle door opening signal and can send an oiling instruction according to the detection result of the oil pressure condition and the oiling condition of the hydraulic system, so that the hydraulic system can quickly establish the oil pressure, and the oil pressure is not required to be established after the driver operates the controller to electrify. Therefore, compared with the prior art, the method can enable the electromagnetic valve to acquire sufficient oil pressure in advance and further enter a working state in advance, and after the driver operates the controller to be electrified, the driving can be started in a short time, so that the driving experience of the driver is improved.
In addition, for a hydraulic system with the capacity of the accumulator being reduced, the time consumption for establishing the oil pressure by applying the method in the prior art is longer, and if the control method for pumping oil by the oil pump motor provided by the embodiment is adopted, the effect of establishing the sufficient oil pressure supply solenoid valve in advance is more remarkable. It can be seen that the method provided by the present embodiment has a significant advantage over the prior art in hydraulic systems where the accumulator capacity is reduced.
Based on the control method for oil pumping of the oil pump motor provided by the embodiment, after the automobile controller sends the oil pumping instruction to the oil pump motor, special conditions may be encountered, so that oil pumping needs to be stopped before oil pumping is finished smoothly. Therefore, the application further provides another control method for oil pumping of the oil pump motor, and the specific implementation mode of the method is described in detail below with reference to the accompanying drawings.
Referring to fig. 2, the figure is a flowchart of another control method for pumping oil by an oil pump motor according to an embodiment of the present application.
As shown in fig. 2, a method for controlling oil pumping of an oil pump motor provided in an embodiment of the present application includes:
s201: after the automobile controller is awakened based on the automobile door opening signal, the automobile controller responds to the automobile door opening signal to detect whether the oil pressure of the hydraulic system is lower than an oil pressure limit value, and if so, whether the oil pumping condition is met is detected.
S202: and if the oil pumping condition is met, the automobile controller sends an oil pumping instruction to the oil pump motor.
In this embodiment, S201 and S202 are the same as S101 and S102 in the foregoing embodiment, respectively, and for brevity, detailed description is omitted here, and detailed information can be referred to related description in the foregoing embodiment. S203: the automobile controller starts to time from the oil pumping starting time of the oil pump motor to obtain the oil pumping duration; acquiring a wake-up period according to the starting time of the automobile controller and the starting time of oil pumping; and acquiring the oil pumping duty ratio according to the oil pumping duration and the awakening period.
The oil pump motor executes oil pumping according to an oil pumping instruction sent by the automobile controller, and the time for starting oil pumping of the oil pump motor is earlier than the time for powering on the automobile controller by a driver operating a PowerMode key, namely the time for starting oil pumping of the oil pump motor is earlier than the time for starting powering on the automobile controller.
In the step, the time is counted from the starting time of the oil pumping of the oil pump motor, and the oil pumping duration is obtained in real time along with the continuation of the oil pumping. For example, if the start time of oil injection is t0The moment of obtaining the oil pumping time is t1At t0To t1Within the time interval of (1), this time of printingThe oil is continuous and not interrupted nor stopped, t1The oil pumping time obtained at the moment is t1-t0。
In this embodiment, the oil pump motor starts to pump oil after the automobile controller is awakened based on the door opening signal, and a wakeup period is determined when the automobile controller starts to be powered on. For example, if the start time of the priming is t0The moment when the automobile controller starts to be electrified is t2Then according to t0And t2A wake-up period t may be obtained2-t0。
In this embodiment, the oil pumping duty ratio may be defined as a proportion of the oil pumping duration in the whole wake-up period. As an example, if the oil pumping time is t1-t0Wake-up period of t2-t0According to the oil pumping duration and the awakening period, the oil pumping duty ratio can be acquired as (t)1-t0)/(t2-t0) Wherein t is2Is later than t1Time of (t)1Is later than t0The time of day.
It will be appreciated that the pump duty cycle may also be defined as the ratio of the pump duration to the non-pump duration for the entire wake-up period. As an example, if the oil pumping time is t1-t0Wake-up period of t2-t0Then according to the oil pumping time length and the awakening period, the non-oil pumping time length can be obtained as t2-t1Therefore, the oil pumping duty ratio is (t) according to the oil pumping duration and the non-oil pumping duration1-t0)/(t2-t1) Wherein t is2Is later than t1Time of (t)1Is later than t0The time of day.
S204: the automobile controller judges whether the oil pumping duration exceeds a second time threshold value or not to obtain a first judgment result, judges whether the oil pumping duty ratio exceeds a preset ratio or not to obtain a second judgment result.
For the oil pump motor with the self-protection function, when the oil pumping time is too long and/or the oil pumping duty ratio is too large, the self-protection function can be started. In this step, the automobile controller judges whether the oil pumping duration exceeds a second time threshold value and whether the oil pumping duty ratio exceeds a preset ratio, and is mainly used for determining whether the protection function of the oil pump motor is started according to the first judgment result and the second judgment result.
It should be noted that the second time threshold and the preset ratio may be preset, and the minimum oil pumping duration limit and the minimum oil pumping duty cycle limit trigger the start of the oil pump motor protection function.
S205: and if the first judgment result and/or the second judgment result are/is positive, the automobile controller sends an oil pumping stopping instruction to the oil pump motor.
If the first judgment result is yes, the oil pumping time of the oil pump motor exceeds a second time threshold value; and if the second judgment result is yes, the oil pumping duty ratio of the oil pump motor exceeds the preset ratio. And if any one or both of the first judgment result and the second judgment result is yes, starting the protection function of the oil pump motor.
In order to protect the energy accumulator, when the protection function of the oil pump motor is started, the oil pumping can be stopped. Therefore, in this step, when the automobile controller determines that the protection function of the oil pump motor is started according to the first judgment result and/or the second judgment result, an oil pumping stopping instruction is sent to the oil pump motor so as to protect the energy accumulator by matching with a protection mechanism of the oil pump motor. And the oil pumping stopping instruction is used for stopping the oil pumping of the oil pump motor.
The control method for oil pumping of the oil pump motor provided by the embodiment of the application is as above. According to the method, after the oil pump motor performs oil pumping according to the oil pumping instruction, whether the oil pumping time of the oil pump motor is too long and whether the oil pumping duty ratio is too large are judged by acquiring the oil pumping time length, the awakening period and the oil pumping duty ratio, and then whether the protection function of the oil pump motor is started is determined. And when the first judgment result and/or the second judgment result are/is positive, the protection function of the oil pump motor is determined to be started, and the automobile controller sends an oil pumping stopping instruction to the oil pump motor so that the oil pump motor stops oil pumping at this time. Therefore, in the process of pumping oil by the oil pump motor, whether the pumping of oil needs to be stopped or not can be determined in time according to the pumping time length and the pumping duty ratio, and therefore the energy accumulator can be effectively protected by the method.
In addition, optionally, in the control method for pumping oil to the oil pump motor provided in the foregoing embodiment, after S202, the vehicle controller may further directly detect whether the protection function of the oil pump motor is started, and send an instruction to stop pumping oil to the oil pump motor when the protection function of the oil pump motor is started.
In addition, in addition to the scenarios provided in the foregoing embodiments, after the vehicle controller sends the oil pumping command to the oil pump motor, the vehicle controller may face other scenarios that require stopping the oil pumping before the oil pumping is successfully completed. Therefore, the application further provides another control method for oil pumping of the oil pump motor, and the detailed description of the specific implementation mode of the method is provided in the following with reference to the attached drawings.
Referring to fig. 3, it is a flowchart of another control method for pumping oil by the oil pump motor according to the embodiment of the present application.
As shown in fig. 3, a method for controlling oil pumping of an oil pump motor provided in an embodiment of the present application includes:
s301: after the automobile controller is awakened based on the automobile door opening signal, the automobile controller responds to the automobile door opening signal to detect whether the oil pressure of the hydraulic system is lower than an oil pressure limit value, and if so, whether the oil pumping condition is met is detected.
S302: and if the oil pumping condition is met, the automobile controller sends an oil pumping instruction to the oil pump motor.
In this embodiment, S301 and S302 are the same as S101 and S102 in the foregoing embodiment, respectively, and for brevity, detailed description is omitted here, and detailed information can be referred to related description in the foregoing embodiment.
S303: and the automobile controller detects whether the oil pumping condition is met, and if not, sends an oil pumping stopping instruction to the oil pump motor.
In the process of oil pumping of the oil pump motor, if the oil pumping condition detected in S301 is not met any more, the automobile cannot be started normally even if oil pumping is continued, at the moment, the oil pumping is continued inefficiently, and measures for stopping oil pumping can be taken.
Therefore, in the embodiment, after the automobile controller sends the oil pumping instruction to the oil pump motor and the oil pump motor performs oil pumping according to the oil pumping instruction, the automobile controller can constantly detect whether the oil pumping condition is met. And only when the oil-removing condition is met, oil-removing can be continued. And if the oil pumping condition is detected to be not met, the automobile controller sends an oil pumping stopping instruction to the oil pump motor, and the instruction is used for enabling the oil pump motor to stop the oil pumping at this time.
The control method for oil pumping of the oil pump motor provided by the embodiment of the application is as above. According to the method, after the oil pump motor performs oil pumping according to the oil pumping instruction, the automobile controller constantly detects whether the oil pumping condition is met, and the oil pump motor continuously pumps oil only when the oil pumping condition is met in the oil pumping process and before the oil pressure is not enough; otherwise, once the automobile controller detects that the oil pumping condition is not met, an oil pumping stopping instruction is sent to the oil pump motor, so that the oil pump motor stops oil pumping at this time. Therefore, the method can continuously detect whether the oil pumping condition is met or not after the oil pump motor starts to pump oil, and avoid ineffective oil pumping of the oil pump motor under the condition that the oil pumping condition is not met any more. The fault problem of the electromagnetic valve and/or the oil pressure sensor can be fed back to a driver in time, so that the driver can conveniently and timely overhaul related devices of the automobile, and the driving safety is guaranteed.
In addition, based on the control method for oil pumping of the oil pump motor provided in the foregoing embodiment, after the automobile controller sends the oil pumping instruction to the oil pump motor, the oil pump motor performs oil pumping according to the oil pumping instruction, the oil pumping process continues, if the gradually established oil pressure is no longer lower than the oil pressure limit value, the electromagnetic valve can normally operate according to the oil pressure currently established by the hydraulic system, and at this time, oil pumping does not need to be continued, but oil pumping can be stopped. Therefore, the application further provides another control method for oil pumping of the oil pump motor, and the detailed description of the specific implementation mode of the method is provided in the following with reference to the attached drawings.
Referring to fig. 4, it is a flowchart of another oil pumping control method for an oil pump motor according to an embodiment of the present application.
As shown in fig. 4, a method for controlling oil pumping of an oil pump motor provided in an embodiment of the present application includes:
s401: after the automobile controller is awakened based on the automobile door opening signal, the automobile controller responds to the automobile door opening signal to detect whether the oil pressure of the hydraulic system is lower than an oil pressure limit value, and if so, whether the oil pumping condition is met is detected.
S402: and if the oil pumping condition is met, the automobile controller sends an oil pumping instruction to the oil pump motor.
In this embodiment, S401 and S402 are the same as S101 and S102 in the foregoing embodiment, respectively, and for brevity, detailed description is omitted here, and detailed information can be referred to related description in the foregoing embodiment.
S403: and the automobile controller detects whether the oil pressure of the hydraulic system is lower than the oil pressure limit value, and if not, sends an oil pumping stopping instruction to the oil pump motor.
After the oil pump motor performs oil pumping according to the oil pumping instruction sent by the S402 automobile controller, the automobile controller detects the oil pressure of the hydraulic system at any time. And when the oil pressure is increased to the oil pressure limit value, the hydraulic system is indicated to be sufficient to provide enough oil pressure for the solenoid valve to normally drive the actuator to act. Therefore, in this step, when the vehicle controller detects that the oil pressure is not lower than the oil pressure limit value, the vehicle controller sends an oil pumping stopping instruction to the oil pump motor, where the instruction is used to stop the oil pump motor from pumping oil this time.
The control method for oil pumping of the oil pump motor provided by the embodiment of the application is as above. According to the method, after an oil pump motor performs oil pumping according to an oil pumping command, an automobile controller constantly detects whether the oil pressure of a hydraulic system is lower than an oil pressure limit value, and if the oil pressure is not lower than the oil pressure limit value, the current oil pressure of the hydraulic system is enough to be supplied to an electromagnetic valve to enable the electromagnetic valve to normally drive an actuator to act. Therefore, the automobile controller sends an oil pumping instruction to the oil pump motor so as to stop the oil pumping. Therefore, the method can prevent the voltage of the storage battery from continuously reducing due to the infinite oil pumping of the oil pump motor, and the normal electrification of the controller and the normal starting of the vehicle are influenced.
Optionally, in the method for controlling oil pumping of the oil pump motor provided in each of the foregoing embodiments, after the oil pump motor stops the oil pumping this time according to the instruction for stopping oil pumping, and before the vehicle controller starts to power on, the method may further include: deactivating the function of sending the pump command to the pump motor.
After the oil pump motor stops the oil pumping according to the oil pumping stopping instruction and before the automobile controller starts to be powered on, the automobile controller may detect that the oil pumping condition is restored to be satisfied and the oil pressure is lower than the oil pressure limit value. However, in order to avoid the situation that the voltage of the storage battery is continuously reduced due to multiple times of oil pumping before the controller is powered on, that is, in the wake-up period, so that the normal power-on of the controller and the normal starting of the vehicle are affected, in the oil pumping control method for the oil pump motor provided in this embodiment, after the oil pump motor stops the current oil pumping and before the vehicle controller starts to be powered on, the vehicle controller stops the function of sending the oil pumping command to the oil pump motor. After the function of sending the oil pumping command is stopped, even if the oil pumping condition is detected to be restored and met or the oil pressure is lower than the oil pressure limit value, the automobile controller does not send the oil pumping command to the oil pump motor any more, and therefore the sufficient voltage of the storage battery required by the controller to be normally electrified is guaranteed to a certain extent.
Based on the control method for oil pumping of the oil pump motor provided by the foregoing embodiment, the present application also provides a specific implementation of a preferred control method for oil pumping of the oil pump motor. This embodiment is described in detail below with reference to the drawings.
Referring to fig. 5, the figure is a flowchart of a control method for pumping oil by an oil pump motor according to an embodiment of the present application.
As shown in fig. 5, a method for controlling oil pumping of an oil pump motor provided in an embodiment of the present application includes:
s501: after the automobile controller is awakened based on the automobile door opening signal, the automobile controller responds to the automobile door opening signal to detect whether the oil pressure of the hydraulic system is lower than an oil pressure limit value, and if so, whether the oil pumping condition is met is detected.
In this step, the oiling conditions include: the voltage signal of the storage battery is effective, the voltage of the storage battery is larger than a first voltage threshold value, and lines of the electromagnetic valve and the oil pressure sensor have no faults.
And the first voltage threshold is the minimum voltage for ensuring that the automobile controller is normally powered on once by the storage battery after the oil pump motor is pumped according to the oil pumping instruction.
S502: and if the oil pumping condition is met, the automobile controller sends an oil pumping instruction to the oil pump motor.
When the automobile controller detects that the voltage signal of the storage battery is effective, the voltage of the storage battery is larger than a first voltage threshold value, and a line of the electromagnetic valve and the oil pressure sensor are fault-free and simultaneously established, the detection result is as follows: the oil-removing condition is satisfied. Furthermore, the oil pumping of the oil pump motor can be smoothly carried out, and the normal electrification of the automobile controller and the normal starting of the automobile are not influenced. Therefore, when it is detected that the pumping condition is satisfied, a pumping instruction is sent to the oil pump motor. A pump command to pump the oil pump motor to establish an oil pressure not less than the oil pressure limit.
S503: the automobile controller detects whether any oil pumping stopping condition is met, and if yes, an oil pumping stopping instruction is sent to the oil pump motor.
And the oil pumping stopping instruction is used for stopping the oil pumping of the oil pump motor.
In this step, after the oil pump motor performs the oiling according to the oiling instruction, each oiling stop condition detected by the automobile controller may specifically include:
(1) the protection function of the oil pump motor is started.
(2) The oil-removing condition is not satisfied.
(3) The oil pressure of the hydraulic system is not lower than the oil pressure limit.
For the detection of each of the above-described conditions for stopping the oiling, the present embodiment provides the following exemplary embodiments:
1. the detection of the oil-stop condition (1) may include:
the automobile controller starts to time from the oil pumping starting time of the oil pump motor to obtain the oil pumping duration; acquiring a wake-up period according to the starting time of the automobile controller and the starting time of oil pumping; and acquiring the oil pumping duty ratio according to the oil pumping duration and the awakening period. And then, the automobile controller judges whether the oil pumping duration exceeds a second time threshold value to obtain a first judgment result, and judges whether the oil pumping duty ratio exceeds a preset ratio to obtain a second judgment result. Because the protection function of the oil pump motor is influenced by the oil pumping time length and/or the oil pumping duty ratio, once the oil pumping time length is too long and/or the oil pumping duty ratio is too large, the protection function of the oil pump motor is triggered and started. Therefore, the second time threshold and the preset ratio are respectively adopted in the embodiment as the oil pumping duration trigger threshold and the oil pumping duty ratio trigger threshold for triggering the oil pump motor start protection function. And then, according to the first judgment result and/or the second judgment result, whether the oil pumping function of the oil pump motor is started or not can be detected. Further, the detection of the stop of the oiling condition (1) is realized.
Specifically, if the first judgment result and the second judgment result are both negative, it is determined that the protection function of the oil pump motor is closed, and the detection result is as follows: the oil-stop condition (1) is not satisfied. If the first judgment result and/or the second judgment result are/is yes, the protection function of the oil pump motor is determined to be started, and the detection result is as follows: the oil-stop condition (1) is satisfied.
2. For the detection of the oil-stopping condition (2):
in this embodiment, the oil pumping condition detected by the S501 automobile controller includes: the voltage signal of the storage battery is effective, the voltage of the storage battery is larger than a first voltage threshold value, and lines of the electromagnetic valve and the oil pressure sensor have no faults.
If the voltage signal of the storage battery is invalid, or the voltage of the storage battery is not larger than a first voltage threshold value, or a line of the electromagnetic valve is in fault, or the oil pressure sensor is in fault, the oiling condition is not met, and then the detection result of the oiling stopping condition (2) is obtained as follows: the oil-stop condition (2) is satisfied. And if the voltage signal of the storage battery is effective, the voltage of the storage battery is larger than the first voltage threshold value, the line of the electromagnetic valve has no fault, and the oil pressure sensor has no fault, the oil pumping condition is met, and the detection result of the oil pumping stopping condition (2) is as follows: the oil-stop condition (2) is not satisfied.
3. For the detection of the oil-stop condition (3), the following conditions can be adopted:
the automobile controller detects whether the oil pressure of the hydraulic system is lower than the oil pressure limit value, if the oil pressure is lower than the oil pressure limit value, the detection result is as follows: the oil-stopping condition (3) is not satisfied; if the oil pressure is not lower than the oil pressure limit value, the detection result is as follows: the oil-stopping condition (3) is satisfied.
In the present embodiment, the order of detecting each of the fuel cut-off conditions detected by the vehicle controller is not limited. For example, the stop conditions (1), (2), and (3) may be detected simultaneously, or the stop conditions (3) may be detected and then the stop conditions (1) and (2) may be detected.
Of course, after the vehicle controller detects that any one of the oil pumping stopping conditions (1) to (3) is met, the vehicle controller may continue to detect other oil pumping stopping conditions, or may not detect other oil pumping stopping conditions any more. That is to say, after it is detected that any one of the oil pumping stopping conditions is satisfied, whether other oil pumping stopping conditions are satisfied or not does not have any influence on the sending of the oil pumping stopping command to the oil pump motor in the embodiment, and as long as it is detected that any one of the oil pumping stopping conditions is satisfied, the automobile controller sends the oil pumping stopping command to the oil pump motor.
However, if the first detected oil stopping command of the automobile controller is not satisfied, it is necessary to detect whether other oil stopping commands are satisfied or not until all oil stopping conditions are detected or the satisfied oil stopping conditions are detected.
If all the oil stopping conditions are detected to be not met, the automobile controller needs to continuously detect the oil stopping conditions. For example, if T1The oil pumping stopping condition (1) is not satisfied by time detection, T2The oil pumping stopping conditions (2) and (3) are not met in time detection, T2Is later than T1At time T, then2Time of day or T2At a later time, a stop-oiling condition (1) is detected, and may be at T2And detecting the oil-stopping condition (2) and/or (3) at the later moment.
S504: before the automobile controller starts to be powered on, the automobile controller stops the function of sending the oil pumping instruction to the oil pump motor.
In order to avoid that the voltage of the storage battery is continuously reduced due to multiple times of oil pumping before the controller is powered on, namely in the wake-up period, so that the normal power-on of the controller and the normal starting of the vehicle are affected, in the oil pumping control method for the oil pump motor provided by the embodiment, the vehicle controller stops sending the oil pumping instruction to the oil pump motor after the oil pump motor stops the oil pumping and before the vehicle controller starts to be powered on. After the function of sending the oil pumping command is stopped, even if the oil pumping condition is detected to be restored and met or the oil pressure is lower than the oil pressure limit value, the automobile controller does not send the oil pumping command to the oil pump motor any more, and therefore the sufficient voltage of the storage battery required by the controller to be normally electrified is guaranteed to a certain extent.
The above is the control method for the oil pumping of the oil pump motor provided by the embodiment of the application. The method comprises the steps that after the automobile controller is awakened based on an automobile door opening signal, the automobile controller responds to the automobile door opening signal to detect whether the oil pressure of a hydraulic system is lower than an oil pressure limit value, and if yes, whether an oil pumping condition is met is detected; if the oil pumping condition is met, the automobile controller sends an oil pumping instruction to the oil pump motor; then the automobile controller detects whether any oil pumping stopping condition is met, and if yes, an oil pumping stopping instruction is sent to the oil pump motor; before the automobile controller starts to be powered on, the automobile controller stops the function of sending the oil pumping instruction to the oil pump motor.
The method can determine whether the oil pumping command can be sent to the oil pump motor or not according to the conditions of the voltage of the storage battery, the electromagnetic valve and the oil pressure sensor, can also determine whether the oil pumping stopping command needs to be sent to the oil pump motor or not according to the detection result of each oil pumping stopping condition, and also provides a function of stopping sending the oil pumping command to the oil pump motor in the same wake-up period after the oil pumping stopping command is sent, so that the voltage consumed by the controller for normal power-on is ensured. Therefore, the control method for oil pumping of the oil pump motor provided by the embodiment of the application has high safety and reliability.
In addition, because the time for opening the vehicle door by the driver is earlier than the time for electrifying the operation controller, before the driver operates the controller to electrify, the vehicle controller responds to the vehicle door opening signal and can send an oil pumping instruction according to the detection result of the oil pressure condition and the oil pumping condition of the hydraulic system, so that the hydraulic system can quickly establish the oil pressure, and the oil pressure is not required to be established after the driver operates the controller to electrify. Therefore, compared with the prior art, the method can enable the electromagnetic valve to acquire sufficient oil pressure in advance, so that the electromagnetic valve can enter the working state quickly, and the waiting time for starting the vehicle by a driver is saved. Particularly for a hydraulic system with the capacity of the energy accumulator being attenuated, the oil pumping speed of the oil pump motor provided by the embodiment is improved more remarkably by applying the control method for pumping oil.
Based on the control method for oil pumping of the oil pump motor provided by the embodiment, the application further provides an automobile controller. The following describes the vehicle controller in detail with reference to the drawings.
Referring to fig. 6, the drawing is a schematic structural diagram of an automobile controller according to an embodiment of the present application.
As shown in fig. 6, an automotive controller 61 according to an embodiment of the present application includes: a detection module 611 and an instruction sending module 612;
the detecting module 611 is configured to detect whether an oil pressure of a hydraulic system is lower than an oil pressure limit value in response to a door opening signal after the vehicle controller is awakened based on the door opening signal, and detect whether an oil pumping condition is met if the oil pressure of the hydraulic system is lower than the oil pressure limit value.
And the instruction sending module 612 is configured to send an oil pumping instruction to the oil pump motor if the oil pumping condition is met.
The oil pressure limit value is the minimum oil pressure required by the electromagnetic valve to drive the actuator to act; a pump command to pump the oil pump motor to establish an oil pressure not less than the oil pressure limit.
The above is the automobile controller provided in the embodiment of the present application. The automobile controller is triggered by an automobile door opening signal to detect each oil pumping condition, once the automobile door is opened, the automobile controller is awakened, and then whether the oil pressure of the hydraulic system is lower than an oil pressure limit value is detected, and when the oil pressure of the hydraulic system is lower than the minimum oil pressure required by the action of the electromagnetic valve driving actuator, the electromagnetic valve is indicated to be difficult to work normally depending on the current oil pressure. Therefore, the automobile controller continuously detects whether the oil pumping condition is met or not under the condition, and when the oil pumping condition is met, the automobile controller sends an oil pumping command to an oil pump motor of the hydraulic system, so that the oil pump motor pumps oil according to the oil pumping command to establish an oil pressure which is not lower than the oil pressure limit value, and the electromagnetic valve can normally work according to sufficient oil pressure provided by the hydraulic system.
Because the time for opening the vehicle door by the driver is earlier than the time for electrifying the operation controller, before the driver operates the controller to electrify, the vehicle controller provided by the embodiment responds to the vehicle door opening signal, and can send the oil pumping instruction according to the detection result of the oil pressure condition and the oil pumping condition of the hydraulic system, so that the hydraulic system can quickly establish the oil pressure, and the oil pressure does not need to be established after the driver operates the controller to electrify.
Therefore, compared with the prior art, the automobile controller can enable the electromagnetic valve to acquire sufficient oil pressure in advance, and then enter a working state in advance, and after the driver operates the controller to be electrified, the automobile can be started in a short time, and the driving experience of the driver is improved. In addition, for the hydraulic system with the energy storage capacity being reduced, the time for building the oil pressure is longer by applying the prior art, and the effect that the automobile controller provided by the embodiment can build the sufficient oil pressure supply electromagnetic valve in advance is more remarkable. Therefore, compared with the prior art, the automobile controller provided by the embodiment has more obvious advantages in the hydraulic system with the reduced capacity of the accumulator.
It should be noted that, in the present specification, all the embodiments are described in a progressive manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the apparatus embodiment, since it is substantially similar to the method embodiment, it is relatively simple to describe, and reference may be made to some descriptions of the method embodiment for relevant points. The above-described embodiments of the apparatus are merely illustrative, and the modules described as separate parts may or may not be physically separate, and the parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only one specific embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (7)
1. A control method for oil pumping of an oil pump motor is characterized in that the method is applied to an automobile controller, and comprises the following steps:
after the automobile controller is awakened based on the automobile door opening signal, responding to the automobile door opening signal, detecting whether the oil pressure of a hydraulic system is lower than an oil pressure limit value, and if so, detecting whether an oil pumping condition is met; the oil pressure limit value is the minimum oil pressure required by the electromagnetic valve to drive the actuator to act;
if the oil pumping condition is met, sending an oil pumping instruction to an oil pump motor; the oil pumping command is used for pumping oil to the oil pump motor so as to establish oil pressure not lower than the oil pressure limit value;
the oil refining conditions comprise:
the voltage signal of the storage battery is effective, and the voltage of the storage battery is greater than a first voltage threshold value; the first voltage threshold is the minimum voltage of the storage battery for ensuring that the automobile controller is normally powered on once after the oil pump motor is oiled according to the oiling instruction;
the voltage signal of the battery effectively comprises:
determining that the noise voltage is smaller than a second voltage threshold value based on the noise voltage of the storage battery, and the duration of the noise voltage which is continuously smaller than the second voltage threshold value is larger than a first time threshold value; the noise voltage is a fluctuation voltage generated by the storage battery under the interference influence of the automobile controller and/or the oil pump motor; the second voltage threshold is a minimum noise voltage that causes the voltage signal of the battery to be invalid.
2. The method of claim 1, wherein the oiling conditions comprise:
and the lines of the solenoid valve and/or the oil pressure sensor have no faults.
3. The method according to any one of claims 1-2, wherein after sending the oil pumping command to the oil pump motor, the method further comprises:
timing from the starting time of oil pumping of the oil pump motor to obtain the oil pumping duration; acquiring a wakeup period according to the starting time of the automobile controller and the starting time of the oil pumping; acquiring the oil pumping duty ratio according to the oil pumping duration and the awakening period;
judging whether the oil pumping duration exceeds a second time threshold value to obtain a first judgment result, and judging whether the oil pumping duty ratio exceeds a preset ratio to obtain a second judgment result;
if the first judgment result and/or the second judgment result are/is yes, sending an oil pumping stopping instruction to an oil pump motor; and the oil pumping stopping instruction is used for stopping the oil pumping of the oil pump motor.
4. The method according to any one of claims 1-2, wherein after sending the oil pumping command to the oil pump motor, the method further comprises:
detecting whether the oil pumping condition is met, and if not, sending an oil pumping stopping instruction to an oil pump motor; and the oil pumping stopping instruction is used for stopping the oil pumping of the oil pump motor.
5. The method according to any one of claims 1-2, wherein after sending the oil pumping command to the oil pump motor, the method further comprises:
detecting whether the oil pressure of the hydraulic system is lower than the oil pressure limit value, and if not, sending an oil pumping stopping instruction to an oil pump motor; and the oil pumping stopping instruction is used for stopping the oil pumping of the oil pump motor.
6. The method of claim 5, wherein after the oil pump motor stops the current pumping and before the vehicle controller starts to power up, the method further comprises:
deactivating the function of sending the pump command to the pump motor.
7. An automotive controller, comprising: the device comprises a detection module and an instruction sending module;
the detection module is used for responding to a vehicle door opening signal after the vehicle controller is awakened based on the vehicle door opening signal, detecting whether the oil pressure of a hydraulic system is lower than an oil pressure limit value or not, and detecting whether an oil pumping condition is met or not if the oil pressure of the hydraulic system is lower than the oil pressure limit value; the oil pressure limit value is the minimum oil pressure required by the electromagnetic valve to drive the actuator to act;
the instruction sending module is used for sending an oil pumping instruction to the oil pump motor if the oil pumping condition is met; the oil pumping command is used for pumping oil to the oil pump motor so as to establish oil pressure not lower than the oil pressure limit value;
wherein the oil-out condition in the detection module comprises:
the voltage signal of the storage battery is effective, and the voltage of the storage battery is greater than a first voltage threshold value; the first voltage threshold is the minimum voltage of the storage battery for ensuring that the automobile controller is normally powered on once after the oil pump motor is oiled according to the oiling instruction;
the voltage signal of the battery effectively comprises:
determining that the noise voltage is smaller than a second voltage threshold value based on the noise voltage of the storage battery, and the duration of the noise voltage which is continuously smaller than the second voltage threshold value is larger than a first time threshold value; the noise voltage is a fluctuation voltage generated by the storage battery under the interference influence of the automobile controller and/or the oil pump motor; the second voltage threshold is a minimum noise voltage that causes the voltage signal of the battery to be invalid.
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| CN201811261194.5A CN111102348B (en) | 2018-10-26 | 2018-10-26 | Control method for oil pumping of oil pump motor and automobile controller |
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| CN201811261194.5A CN111102348B (en) | 2018-10-26 | 2018-10-26 | Control method for oil pumping of oil pump motor and automobile controller |
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| CN101878384A (en) * | 2008-04-28 | 2010-11-03 | 爱信艾达株式会社 | Vehicle controller |
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| CN103277004A (en) * | 2013-06-14 | 2013-09-04 | 北京汽车股份有限公司 | Hydraulic car door control device and car |
| CN104494543A (en) * | 2014-12-27 | 2015-04-08 | 重庆长安汽车股份有限公司 | Advanced pressure buildup method for automobile oil pump |
| CN204309594U (en) * | 2014-11-27 | 2015-05-06 | 浙江吉利汽车研究院有限公司 | A kind of pre-feed apparatus of vehicle oil pump |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101878384A (en) * | 2008-04-28 | 2010-11-03 | 爱信艾达株式会社 | Vehicle controller |
| CN102235490A (en) * | 2010-05-07 | 2011-11-09 | 腓特烈斯港齿轮工厂股份公司 | Operation method for shifting element of an automatic transmission before start-up of an combustion engine |
| CN103277004A (en) * | 2013-06-14 | 2013-09-04 | 北京汽车股份有限公司 | Hydraulic car door control device and car |
| CN204309594U (en) * | 2014-11-27 | 2015-05-06 | 浙江吉利汽车研究院有限公司 | A kind of pre-feed apparatus of vehicle oil pump |
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