CN105805285A - Speed changing box lubricating method and system suitable for hybrid electric vehicle - Google Patents
Speed changing box lubricating method and system suitable for hybrid electric vehicle Download PDFInfo
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- CN105805285A CN105805285A CN201410856550.3A CN201410856550A CN105805285A CN 105805285 A CN105805285 A CN 105805285A CN 201410856550 A CN201410856550 A CN 201410856550A CN 105805285 A CN105805285 A CN 105805285A
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Abstract
The invention discloses a speed changing box lubricating method suitable for a hybrid electric vehicle. The vehicle comprises an electric pump and a mechanical pump. Work modes of the vehicle include an EV mode and a hybrid electric vehicle mode. The method comprises the following steps that S11, a controller judges the work mode of the vehicle; S12, in the EV mode, the controller controls the electric pump to lubricate a speed changing box with different power values according to the temperature of lubricating oil; and S13, in the hybrid power mode, the controller shuts down the electric pump, and the mechanical pump is started along with an engine and starts to lubricate the speed changing box. According to the above speed changing box lubricating method, the electric pump or the mechanical arm is started to work according to the mode of the vehicle, and the work of the electric pump and the mechanical pump is divided according to different modes. Meanwhile, by means of the above method, the rotating speed of the electric pump is controlled according to the temperature of the lubricating oil, and accordingly the lubricating efficiency is improved. The invention further discloses a speed changing box lubricating system.
Description
Technical field
The present invention relates to automotive engineering, especially relate to a kind of gearbox lubrication method suitable in hybrid vehicle and a kind of speed changing box lubricating system.
Background technology
The mode of current oil jet lubrication is mainly used in new-energy automobile, including pure electric automobile and hybrid vehicle, adopts the mechanical pump connected firmly with engine output shaft or independent of the electrodynamic pump of drive system as power source.In severe hybrid power automotive transmission, if individually adopting and connecting firmly mechanical pump with engine output shaft, then car load electromotor under EV pattern (electric-only mode) is inoperative, the flowing passive delivery of lubricating oil, if individually adopting electric drive oil pump, then need to select bigger motor, be greatly increased system weight.
And, in the mode of above-mentioned oil jet lubrication, driven type oil pump drives oil jet lubrication system to lack the monitoring to system mode, owing to lubricating system load changes along with oil body, and oil body varies with temperature, motor is owing to lacking system mode feedback, and controller cannot judge that the band load situation of motor gives with perseverance and drives motor, cause heavy load to give load not enough, little and give excessive situation, add system useless power consumption.
Summary of the invention
It is contemplated that at least solve one of technical problem of existence in prior art.For this, the present invention needs to provide a kind of gearbox lubrication method suitable in hybrid vehicle and a kind of speed changing box lubricating system.
A kind of gearbox lubrication method suitable in hybrid vehicle, described automobile includes change speed gear box, lubricating oil, electrodynamic pump, mechanical pump, temperature sensor and controller, described lubricating oil is contained in described change speed gear box, described electrodynamic pump and described mechanical pump are respectively communicated with bottom and the top of described change speed gear box, for thinking described gearbox lubrication by the bottom sucking-off from described change speed gear box of the described lubricating oil and after pressurizeing from the top spray of described change speed gear box, described temperature sensor, for sensing the temperature of described lubricating oil, said method comprising the steps of:
S11: described controller judges the mode of operation of described automobile, and described mode of operation includes electric-only mode and hybrid mode；
S12: under described electric-only mode, the described controller temperature according to described lubricating oil, control described electrodynamic pump with different power to described gearbox lubrication；And
S13: under described hybrid mode, described controller cuts out described electrodynamic pump, and described mechanical pump starts with engine start described gearbox lubrication.
Above-mentioned gearbox lubrication method pattern residing for automobile starts electrodynamic pump or working machine pump, achieve the division of labor on different mode residing for hybrid vehicle of electrodynamic pump and mechanical pump, avoid mechanical pump and electrodynamic pump works the interfering with each other of two-way lubricating oil flow simultaneously, it also avoid the frequent start-stop of electrodynamic pump, simultaneously, above-mentioned gearbox lubrication method controls the rotating speed of electrodynamic pump according to the temperature of lubricating oil, avoid heavy load to give load not enough, little and give excessive situation, decrease the useless power consumption of system, and then improve lubricating efficiency.Additionally, because described electrodynamic pump starts or the load of operation is directly relevant with oil body, the temperature of lubricating oil directly affects oil body, temperature is more little, viscosity is more big, load is more big therewith, so control the power that described gearbox lubrication needs by described electrodynamic pump more big, temperature is more big, viscosity is more little, load is more little therewith, so control the power that described gearbox lubrication needs by described electrodynamic pump more little, for this, for sensing the sensor of the temperature of described lubricating oil, the described controller temperature according to described lubricating oil, control described electrodynamic pump with different power to described gearbox lubrication.
In one embodiment, the temperature of described lubricating oil and the described electrodynamic pump power negative correlation to described gearbox lubrication, along with lubricating oil temperature raises, described controller controls described electrodynamic pump and the power of described gearbox lubrication is gradually reduced.
In one embodiment, when described electrodynamic pump starts, along with the increase of described lubricating oil temperature, described controller controls to start the dutycycle of electrodynamic pump and is gradually reduced.In one embodiment, when described electrodynamic pump continuous service, along with the increase of described lubricating oil temperature, described controller controls to run the dutycycle of electrodynamic pump and is gradually reduced.
In one embodiment, before described automobile meets driving conditions, described controller controls described electric priming pump with to described gearbox lubrication；
When, after described electrodynamic pump continuous service Preset Time, described automobile is still unsatisfactory for this driving conditions, described controller controls described electrodynamic pump and cuts out, and wherein this driving conditions is: the speed that the gear of described automobile is non-park position and described automobile is not zero.
A kind of speed changing box lubricating system suitable in hybrid vehicle, including change speed gear box, lubricating oil, electrodynamic pump, mechanical pump, temperature sensor and controller；
Described lubricating oil is contained in described change speed gear box, described electrodynamic pump and described mechanical pump are respectively communicated with bottom and the top of described change speed gear box, for thinking described gearbox lubrication from the top spray of described change speed gear box after the bottom sucking-off from described change speed gear box of the described lubricating oil pressurization；
Described temperature sensor is for sensing the temperature of described lubricating oil；
Described controller is for judging the mode of operation of described automobile, and described mode of operation includes electric-only mode and hybrid mode；
Under described electric-only mode, the described controller temperature according to described lubricating oil, control described electrodynamic pump with different power to described gearbox lubrication；
Under described hybrid mode, described controller cuts out described electrodynamic pump, and described mechanical pump starts with engine start described gearbox lubrication.
Because described electrodynamic pump starts or the load of operation is directly relevant with oil body, the temperature of lubricating oil directly affects oil body, temperature is more little, viscosity is more big, load is more big therewith, so control the power that described gearbox lubrication needs by described electrodynamic pump more big, temperature is more big, viscosity is more little, load is more little therewith, so control the power that described gearbox lubrication needs by described electrodynamic pump more little, for this, for sensing the sensor of the temperature of described lubricating oil, the described controller temperature according to described lubricating oil, control described electrodynamic pump with different power to described gearbox lubrication.
The additional aspect of the present invention and advantage will part provide in the following description, and part will become apparent from the description below, or is recognized by the practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage are from conjunction with will be apparent from easy to understand the accompanying drawings below description to embodiment, wherein:
Fig. 1 is the module diagram of the speed changing box lubricating system being applicable to hybrid vehicle of better embodiment of the present invention.
Fig. 2 is the structural representation of the speed changing box lubricating system of Fig. 1.
Fig. 3 is the schematic flow sheet of the gearbox lubrication method being applicable to hybrid vehicle of better embodiment of the present invention.
Fig. 4 is another schematic flow sheet of the gearbox lubrication method being applicable to hybrid vehicle of better embodiment of the present invention.
Fig. 5 is another schematic flow sheet of the gearbox lubrication method being applicable to hybrid vehicle of better embodiment of the present invention.
Detailed description of the invention
Being described below in detail embodiments of the present invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of same or like function from start to finish.The embodiment described below with reference to accompanying drawing is illustrative of, and is only used for explaining the present invention, and is not considered as limiting the invention.
In describing the invention, it is to be understood that term " first ", " second " only for descriptive purposes, and it is not intended that instruction or hint relative importance or hidden conjunction indicate the quantity of indicated technical characteristic.Thus, define " first ", the feature of " second " can express or hidden conjunction include one or more described features.In describing the invention, " multiple " are meant that two or more, unless otherwise expressly limited specifically.
In describing the invention, it is necessary to explanation, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, for instance, it is possible to it is fixing connection, it is also possible to be removably connect, or connect integratedly；Can be mechanically connected, it is also possible to be electrically connect or can intercom mutually；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, it is possible to be connection or the interaction relationship of two elements of two element internals.For the ordinary skill in the art, it is possible to understand above-mentioned term concrete meaning in the present invention as the case may be.
Following disclosure provides many different embodiments or example for realizing the different structure of the present invention.In order to simplify disclosure of the invention, hereinafter parts and setting to specific examples are described.Certainly, they are only merely illustrative, and are not intended to the restriction present invention.Additionally, the present invention can in different examples repeat reference numerals and/or reference letter, this repetition is for purposes of simplicity and clarity, the relation between itself not indicating discussed various embodiment and/or arranging.Additionally, the example of the various specific technique that the invention provides and material, but those of ordinary skill in the art are it can be appreciated that the use of the application of other techniques and/or other materials.
Referring to Fig. 1～Fig. 2, the speed changing box lubricating system 100 of better embodiment of the present invention is applicable to hybrid vehicle.The mode of operation of hybrid vehicle includes the electric-only mode (electricvehicle that drive motor drives, EV pattern) and simultaneously by drive motor and engine-driven hybrid mode (hybrid-electricvehicle, HEV mode).Described system 100 includes change speed gear box 11, lubricating oil 12, electrodynamic pump 13, control unit of engine (ECM) 14, mechanical pump 15, temperature sensor 18 and controller.Lubricating oil 12 is contained in change speed gear box 11.The bottom of electrodynamic pump 13 and connection change speed gear box 11 and top.ECM14 is used for gathering GES, EPB parking signal and car load mode of operation signal.Mechanical pump 15 connects bottom and the top of change speed gear box 11.Mechanical pump 15 is connected with the electromotor of automobile, for start with the startup of electromotor with by the lubricating oil 12 bottom sucking-off from change speed gear box 11 and after pressurizeing from the top spray of change speed gear box 11 so that change speed gear box 11 is lubricated.
Because described electrodynamic pump 13 starts or the load that runs is directly relevant with the viscosity of lubricating oil 12, the temperature of lubricating oil 12 directly affects the viscosity of lubricating oil 12, temperature is more little, viscosity is more big, and load is more big therewith, then control described electrodynamic pump 13 power of described change speed gear box 11 lubrication needs is more big, temperature is more big, viscosity is more little, and load is more little therewith, then control described electrodynamic pump 13 power of described change speed gear box 11 lubrication needs is more little.For this, for sensing the temperature sensor 18 of temperature of described lubricating oil 12, the described controller temperature according to described lubricating oil 12, control described electrodynamic pump 13 and with different power, described change speed gear box 11 lubricated.Formulate the control strategy of the starting point of the loading condition with electrodynamic pump 13, the appearance of described electrodynamic pump 13 load capacity deficiency or the excessive extreme case caused of starting current can be prevented.
Concrete, described temperature sensor 18 is for sensing the temperature of described lubricating oil 12.Described controller is for judging the mode of operation of described automobile.Under described electric-only mode, described controller, for the temperature according to described lubricating oil 12, controls described electrodynamic pump 13 and with different power, described change speed gear box 11 is lubricated.Under described hybrid mode, described controller is used for cutting out described electrodynamic pump 13, and described mechanical pump 15 starts with the startup of electromotor described change speed gear box 11 is lubricated.
In one embodiment, in one embodiment, the temperature of described lubricating oil and the described electrodynamic pump power negative correlation to described gearbox lubrication, along with lubricating oil temperature raises, described controller controls described electrodynamic pump and the power of described gearbox lubrication is gradually reduced.Concrete, the temperature of described lubricating oil 12 is relatively low, and institute's controller controls described electrodynamic pump 13 and with bigger power, described change speed gear box 11 lubricated.The temperature of described lubricating oil 12 is higher, and institute's controller controls described electrodynamic pump 13 and with less power, described change speed gear box 11 lubricated.
Described electrodynamic pump 13 is that the power of change speed gear box 11 lubrication is relevant to the dutycycle starting or running of the busbar voltage of electrodynamic pump 13 and electrodynamic pump 13.
In one embodiment, described temperature sensor 18 detects described lubricating oil 12 temperature；If the temperature of described lubricating oil 12 is less than the first preset temperature, described controller controls electrodynamic pump 13 and starts with the first dutycycle, now lubricating oil 12 temperature is relatively low, in order to ensure electrodynamic pump 13 normal starting, electrodynamic pump 13 is needed to play maximum capacity for starting, now start with maximum dutycycle, it is possible to obtain maximum starting current, it is ensured that normal starting.
If described lubricating oil 12 temperature is less than the second preset temperature and more than the first preset temperature, then controller judges the busbar voltage of described electrodynamic pump 13, if the busbar voltage of electrodynamic pump 13 is less than default busbar voltage, described controller controls electrodynamic pump 13 and starts with the second dutycycle, if the busbar voltage of electrodynamic pump 13 is more than default busbar voltage, controller controls electrodynamic pump 13 and starts with the 3rd dutycycle.In the temperature range of some lubricating oil, described electrodynamic pump 13 starts when load is identical, and its busbar voltage is more high, now can start with less dutycycle, it is prevented that the impact to electrodynamic pump 13 of the excessive starting current.
If described lubricating oil 12 temperature is less than the 3rd preset temperature and more than the second preset temperature, then controller judges the busbar voltage of described electrodynamic pump 13, if the busbar voltage of electrodynamic pump 13 is less than default busbar voltage, described controller controls electrodynamic pump 13 and starts with the 4th dutycycle, if the busbar voltage of electrodynamic pump 13 is more than default busbar voltage, controller controls electrodynamic pump 13 and starts with the 5th dutycycle.
If described lubricating oil 12 temperature is more than three preset temperatures, then judge the busbar voltage of described electrodynamic pump 13, if the busbar voltage of electrodynamic pump 13 is less than default busbar voltage, described controller controls electrodynamic pump 13 and starts with the 6th dutycycle, if the busbar voltage of electrodynamic pump 13 is more than default busbar voltage, controller controls electrodynamic pump 13 and starts with the 7th dutycycle.
Wherein, described first preset temperature to described 3rd preset temperature is gradually increased, and described first dutycycle is gradually reduced to the 7th dutycycle.
It is that in the process that change speed gear box 11 lubricates, described temperature sensor 18 detects described lubricating oil 12 temperature constantly at described electrodynamic pump 13；If described lubricating oil 12 temperature is less than the 4th preset temperature, described controller controls electrodynamic pump 13 and runs with the 8th dutycycle；
If described lubricating oil 12 temperature is less than the 5th preset temperature and more than four preset temperatures, then controller judges the busbar voltage of described electrodynamic pump 13, if the busbar voltage of electrodynamic pump 13 is less than default busbar voltage, described controller controls electrodynamic pump 13 and runs with the 9th dutycycle, if the busbar voltage of electrodynamic pump 13 is more than default busbar voltage, controller controls electrodynamic pump 13 and runs with the tenth dutycycle.
If described lubricating oil 12 temperature is less than the 6th preset temperature and more than five preset temperatures, then controller judges the busbar voltage of described electrodynamic pump 13, if the busbar voltage of electrodynamic pump 13 is less than default busbar voltage, described controller controls electrodynamic pump 13 and runs with the 11st dutycycle, if the busbar voltage of electrodynamic pump 13 is more than default busbar voltage, controller controls electrodynamic pump 13 and runs with the 12nd dutycycle.
If described lubricating oil 12 temperature is more than the 6th preset temperature, then controller judges the busbar voltage of described electrodynamic pump 13, if the busbar voltage of electrodynamic pump 13 is less than default busbar voltage, described controller controls electrodynamic pump 13 and runs with the 13rd dutycycle, if the busbar voltage of electrodynamic pump 13 is more than default busbar voltage, controller controls electrodynamic pump 13 and runs with the 14th dutycycle.
Wherein, described 4th preset temperature to described 6th preset temperature is gradually increased, and described 8th dutycycle is gradually reduced to the 14th dutycycle.
Because lubricating oil 12 is in the process repeatedly lubricated, temperature can raise accordingly, and in embodiment provided by the invention, described 4th preset temperature is more than the 3rd preset temperature.
In one embodiment, before described automobile meets driving conditions, described controller controls described electrodynamic pump 13 and starts described change speed gear box 11 is lubricated.
When, after described electrodynamic pump 13 continuous service Preset Time, described automobile is still unsatisfactory for this driving conditions, described controller controls described electrodynamic pump 13 and cuts out, and wherein this driving conditions is: the speed that the gear of described automobile is non-park position and described automobile is not zero.Specifically, described controller includes drive controller (TCU) 20 and Oil pump electrical machinery controller 21, and described drive controller 20 is for judging the mode of operation of described automobile.Under electric-only mode, described drive controller 20 is passed through after described Oil pump electrical machinery controller 21 starts described electrodynamic pump 13 for the temperature according to described lubricating oil 12 and is controlled the rotating speed of described electrodynamic pump 13 by described Oil pump electrical machinery controller 21, and under hybrid mode, described drive controller 20 is for closing described electrodynamic pump 13 by described Oil pump electrical machinery controller 21, and described mechanical pump 15 starts with engine start described change speed gear box 11 is lubricated.
TCU20 is as the control unit of system, and Oil pump electrical machinery controller 21 is as the driver element of system, and electrodynamic pump 13 is the performance element of system strategy.TCU20 needs to gather GES, EPB parking signal and car load mode of operation signal from ECM14.Temperature sensor 18 is measured the temperature of transmission oil 12 and transmits to TCU20 process, the loading condition current to judge electrodynamic pump 13.The signal of Oil pump electrical machinery controller 21 and TCU20 is realized by 3 rigid lines alternately, and wherein motor enables signal for controlling the starting/stopping of electrodynamic pump 13, for high/low level signal；Motor speed Setting signal is that frequency is fixed, the pwm signal of change in duty cycle；Speed feedback signal is that dutycycle is fixed, the pwm signal of frequency change.It is the triple line connected with motor three-phase windings that performance element (includes the electrodynamic pump 13 of position-sensor-free three-phase direct-current brushless motor) with the connection of driver element (Oil pump electrical machinery controller 21), by the control to three-phase voltage, realize the rotational speed regulation of electrodynamic pump 13, and then regulate the load capacity of electrodynamic pump 13 and the flow of lubricating pipe.
In present embodiment, Oil pump electrical machinery controller 21 is connected with electrodynamic pump 13 and goes out to think that change speed gear box 11 lubricates by the lubricating oil 12 bottom sucking-off from change speed gear box 11 and after pressurizeing from the top spray of change speed gear box 11 for controlling electrodynamic pump 13.Electrodynamic pump 13 includes oil pump 131 and motor 132.Oil pump electrical machinery controller 21 is connected with motor 132, to control the starting of motor 132, closedown and rotating speed.
The bottom of change speed gear box 11 is formed with first interface 111 and the second interface 112, the top of change speed gear box 11 is formed with oil return interface 113, described system 100 also includes the first flowline 16, second flowline 17, oil return pipe 18 and check valve 19, first flowline 16 connects first interface 111 and check valve 19, second flowline 17 connects the second interface 112 and check valve 19, oil return pipe 18 connects oil return interface 113 and check valve 19, electrodynamic pump 13 is arranged on the first flowline 16, mechanical pump 15 is arranged on the second flowline 17, when check valve 19 is for preventing mechanical pump 15 not actuated, the lubricating oil 12 of the first flowline 16 enters the second flowline 17.Check valve 19 is also possible to prevent to enter the lubricating oil 12 of the second flowline 17 and enter the first flowline 16 when electrodynamic pump 13 is not actuated.
In other words, check valve 19 is possible to prevent automotive service when electric-only mode, the second flowline 17 do not have owing to mechanical pump 15 is not actuated oil pressure cause lubricating oil 12 by after electrodynamic pump 13 oil suction from the first flowline 16 oil return to the second fuel sucking pipe 17.
Described system 100 also includes oil cooler 1a, oil cooler 1a and is arranged on oil return pipe 18, and oil cooler 1a has high temperature cooling and low-temperature heat function concurrently.Time actually used, the change-speed gearing phase mutual friction in change speed gear box 11 will make lubricating oil 12 temperature rise, and high oil temperature can make lubricating oil 12 viscosity too low, affects lubricant effect.
Described system 100 also includes cleaner 1b, cleaner 1b and is arranged on oil return pipe 18, for filtering lubricant oil 12.Change-speed gearing is easily generated metal fragment at running in stage, and therefore, filtering lubricant oil 12 has important effect for the life-span improving change-speed gearing.
Mechanical pump 15 also includes fuel-displaced oil circuit 151, and fuel-displaced oil circuit 151 is connected with gearshift or the clutch hydraulic system of automobile, for providing power to gearshift or clutch hydraulic system.So, when not only can provide power but also high engine speeds can be avoided to run, lubricating loop oil pressure was too high.
It addition, described system 100 also includes spray head 1e, spray head 1e is arranged in change speed gear box 11, and is positioned at top and is connected with lubricant sprayer 12 with oil return interface 113.
Referring to Fig. 3, the gearbox lubrication method of better embodiment of the present invention comprises the following steps:
S11: described controller judges the mode of operation of described automobile, and described mode of operation includes electric-only mode and hybrid mode；
S12: under described electric-only mode, the described controller temperature according to described lubricating oil 12, control described electrodynamic pump 13 and with different power, described change speed gear box 11 is lubricated；And
S13: under described hybrid mode, described controller cuts out described electrodynamic pump 13, and described mechanical pump 15 starts with engine start described change speed gear box 11 is lubricated.
Above-mentioned gearbox lubrication method pattern residing for automobile starts electrodynamic pump or working machine pump, achieve electrodynamic pump 13 and the mechanical pump 15 division of labor in pattern residing for hybrid vehicle, avoid mechanical pump 15 and electrodynamic pump 13 works the interfering with each other of two-way lubricating oil flow simultaneously, it also avoid the frequent start-stop of electrodynamic pump 13, simultaneously, above-mentioned gearbox lubrication method controls the rotating speed of electrodynamic pump 13 according to the temperature of lubricating oil 12, avoid heavy load to give load not enough, little and give excessive situation, decrease the useless power consumption of system, and then improve lubricating efficiency.
It is appreciated that above-mentioned steps S11～S13 can be in ON shelves by said system 100 at automobile, starts to perform realization after that is to say automobile starting.It addition, the starting of electrodynamic pump 13 refers mainly to starting and the closedown of motor 132 with closedown.
In one embodiment, please join Fig. 4, in step s 12, the power negative correlation that described change speed gear box 11 is lubricated by the temperature of described lubricating oil 12 and described electrodynamic pump 13, along with lubricating oil 12 temperature raises, the power that described change speed gear box 11 is lubricated by the described controller described electrodynamic pump 13 of control is gradually reduced.Concrete, the temperature of described lubricating oil 12 is relatively low, described controller controls described electrodynamic pump 13 and with bigger power, described change speed gear box 11 is lubricated, and the temperature of described lubricating oil 12 is higher, and described controller controls described electrodynamic pump 13 and with less power, described change speed gear box 11 lubricated.Thus, the lubricating oil 12 that temperature is low starts electrodynamic pump 13 with bigger power, it is to avoid the situation of electrodynamic pump 13 starting difficulty occurs.
Specifically, this step S12 comprises the following steps:
S121: described controller judges that whether the temperature T of described lubricating oil 12 is less than the first preset temperature T11, if then entering step S122, then enters step S123 if not；
S122: described controller starts described electrodynamic pump 13 with the first dutycycle Dmax；
S123: described controller judges that whether the temperature T of described lubricating oil 12 is more than described first preset temperature T11 and less than the second preset temperature T12, if then entering step S124, then enters step S127 if not；
S124: described controller judges that whether busbar voltage is less than default busbar voltage U1, if then entering step S125, then enters step S126 if not；
S125: described controller starts described electrodynamic pump 13 with the second dutycycle D11, and described second dutycycle D11 is less than described first dutycycle Dmax；
S126: described controller starts described electrodynamic pump 13 with the 3rd dutycycle D12, and described 3rd dutycycle d12 is less than described second dutycycle D11；
S127: described controller judges that whether the temperature T of described lubricating oil 12 is more than described second preset temperature T12 and less than the 3rd preset temperature T13, if then entering step S128, then enters step S131 if not；
S128: described controller judges that whether described busbar voltage is less than described first voltage U1, if then entering step S129, then enters step S130 if not；
S129: described controller starts described electrodynamic pump 13 with the 4th dutycycle D13, and described 4th dutycycle D13 is less than described 3rd dutycycle D12；
S130: described controller starts described electrodynamic pump 13 with the 5th dutycycle D14, and described 5th dutycycle D14 is less than described 4th dutycycle D13；
S131: described controller judges that whether described busbar voltage is less than described default busbar voltage U1, if then entering step S132, then enters step S133 if not；
S132: described controller starts described electrodynamic pump 13 with the 6th dutycycle D15, and described 6th dutycycle D15 is less than described 5th dutycycle D14；And
S133: described controller starts described electrodynamic pump 13 with the 7th dutycycle D16, and described 7th dutycycle D16 is less than described 6th dutycycle D15.
Above-mentioned steps can be regarded as the start-up strategy flow chart of electrodynamic pump 13 (Oil pump electrical machinery 132).Lubricating pipe structure is arranged it has been determined that lubricating system for, affect the viscosity that variable is lubricating oil 12 of load, and the viscosity of lubricating oil 12 is direct and the temperature correlation of lubricating oil 12.Under same even load (namely synthermal under), the busbar voltage (being assigned to the voltage of electrodynamic pump) of electrodynamic pump 13 is more big, the starting current of Oil pump electrical machinery 132 is more big, and the dutycycle (i.e. pwm pulse width modulated) regulating starting can limit the starting current under identical busbar voltage.nullThe starting point formulating the loading condition with Oil pump electrical machinery 132 of the start-up strategy of electrodynamic pump 13，For preventing Oil pump electrical machinery 132 load capacity not enough or the appearance of extreme case that starting current is excessive，Before fuel primer pump motor 132, transmission oil 12 temperature T is judged，Start point four temperature sections，I.e. T < T11、T11 < T < T12、T12 < T < T13、T > T13，And the voltage (busbar voltage) of low tension battery is taken into account，Mate 7 different Oil pump electrical machineries 132 and start dutycycle，I.e. Dmax、D11、D12、D13、D14、D15、D16，The size of these seven dutycycles reduces successively，Namely when the busbar voltage of described electrodynamic pump 13 is bigger，Described controller controls described electrodynamic pump 13 and with bigger power, described change speed gear box 11 is lubricated；When the busbar voltage of described electrodynamic pump 13 is less, described controller controls described electrodynamic pump 13 and with less power, described change speed gear box 11 is lubricated.Watt level and dutycycle size are proportionate.Being appreciated that the unit of said temperature is for degree Celsius (DEG C), the unit of voltage is volt (V).
Please joining Fig. 3, described method further comprises the steps of: between step S11 and step S12
S14: described controller judges described electrodynamic pump 13 pump whether continuous service, if then entering step S15, then enters step S12 if not；
S15: described controller cuts out or electrodynamic pump 13 described in continuous service according to the gear of described automobile and speed.
Specifically, TCU20 judges described electrodynamic pump 13 pump whether continuous service, and control oil pump electric machine controller 31 cuts out or electrodynamic pump 13 described in continuous service.When the mode of operation of automobile is electric-only mode, sometimes due to drive the maloperation of the person of making, the signal being switched to electric-only mode can be resend.Therefore, described controller is when judging described electrodynamic pump 13 continuous service, can avoid again sending signal and start electrodynamic pump 13, cause system resource waste, and when above-mentioned maloperation, the method also can be directly entered the continuous service strategy of electrodynamic pump 13, improves the error correction rate of method.
Described method further comprises the steps of: between step S12 and step S15
S16: described controller judges that whether the continuous working period of described electrodynamic pump 13 is more than very first time t1, if then entering step S15, then repeats step S16 if not.
That is, before step S15, before described automobile meets driving conditions, described controller controls described electrodynamic pump 13 and starts described change speed gear box 11 is lubricated.Due to automobile cut electric-only mode by other mode of operations or under electric-only mode on after ON shelves electricity, quickly respond corresponding with drive motor, consider that oil pressure sets up the time, variator lubrication 12 is avoided not in time the temperature of gear pair to be raised impact, regulation electrodynamic pump 13 start after continuous service more than very first time t1 (Preset Time) after the second, performing the operation reserve of electrodynamic pump 13 again, this makes the execution of method more accurate.
Please joining Fig. 3, step S15 comprises the following steps:
S151: described controller judges whether described automobile gears is that parking keeps off and whether the speed of described automobile is zero, if then entering step S152, if it is not, then enter step S153；
S152: described controller judges whether described automobile runs over, if then entering step S154, then enters step S155 if not；
S153: electrodynamic pump 13 described in described controller continuous service；
S154: electrodynamic pump 13 described in described controller continuous service；
S155: described controller cuts out described electrodynamic pump 13；
S156: described controller judges that whether the continuous working period of described electrodynamic pump 13 is more than the second time t2, if then entering step S157, then repeats step S156 if not；
S157: described controller judges whether described automobile gears is that parking keeps off and whether the speed of described automobile is zero, if then entering step S155, then enters step S153 if not.
Parking brake (includes electronics parking brake, machinery parking brake etc.) and is pulled up as the foundation that automobile gears is parking gear.
In above-mentioned steps S152, the TCU20 of described controller by judge ON shelves electric car on this whether have speed be not 0 moment judge whether automobile exercised.If automobile was not exercised, then close motor 132, saved the energy.
Namely in above-mentioned steps S15, when after the described t1 second electrodynamic pump 13 continuous service very first time (Preset Time), described automobile is still unsatisfactory for this driving conditions, described controller controls described electrodynamic pump 13 and cuts out, and wherein this driving conditions is: the speed that the gear of described automobile is non-park position and described automobile is not zero.If described automobile gears is parking gear and the speed of described automobile be zero (being namely unsatisfactory for driving conditions) and on this ON shelves electric car speed have be not 0 moment, then enter the time second timing of the second time t2, it is prevented that vehicle cuts out/fuel primer pump motor 132 continually when of short duration stopping/traveling frequently.Gear is park position and speed is 0, after Oil pump electrical machinery 132 performs the second time second time t2 continuous service strategy, then judges that whether automobile gears is park position and whether speed is 0, as the judgement of the long-time stagnation of movement of vehicle.
Specifically, Fig. 5, step S153 or step S154 please be join to comprise the following steps:
S402: described controller judges that whether the temperature of described lubricating oil 12 is less than the 4th preset temperature T21, if then entering step S403, then enters step S404 if not；
S403: described controller runs described electrodynamic pump 13 with the 8th dutycycle Dmax；
S404: described controller judges that whether the temperature of described lubricating oil 12 is more than described 4th preset temperature T21 and less than the 5th preset temperature T22, if then entering step S405, then enters step S408 if not；
S405: described controller judges that whether busbar voltage is less than default busbar voltage U1, if then entering step S406, then enters step S407 if not；
S406: described controller runs described electrodynamic pump 13 with the 9th dutycycle, and described 9th dutycycle D21 is less than described 8th dutycycle Dmax；
S407: described controller runs described electrodynamic pump 13 with the tenth dutycycle, and described tenth dutycycle D22 is less than described 9th dutycycle D21；
S408: described controller judges that whether the temperature of described lubricating oil 12 is more than described 5th preset temperature T22 and less than the 6th preset temperature T23, if then entering step S409, then enters step S412 if not；
S409: described controller judges that whether described busbar voltage is less than described default busbar voltage U1, if then entering step S410, then enters step S411 if not；
S410: described controller runs described electrodynamic pump 13 with the 11st dutycycle D23, and described 11st dutycycle D23 is less than described tenth dutycycle D22；
S411: described controller runs described electrodynamic pump 13 with the 12nd dutycycle D24, and described 12nd dutycycle D24 is less than described 11st dutycycle D23；
S412: described controller judges that whether described busbar voltage is less than described default busbar voltage U1, if then entering step S413, then enters step S414 if not；
S413: described controller runs described electrodynamic pump 13 with the 13rd dutycycle D25, and described 13rd dutycycle D25 is less than described 12nd dutycycle D24；
S414: described controller runs described electrodynamic pump 13 with the 14th dutycycle D26, and described 14th dutycycle D26 is less than described 13rd dutycycle D25.
Above-mentioned steps can be regarded as the operation reserve flow chart of Oil pump electrical machinery 132.The lubricating oil 12 of variator, while providing lubrication to gear pair, is also taken away the heat that gear pair engagement produces, is played the effect of cooling gear.Gearbox oil cooler can play the effect regulating lubricating oil temperature 12, for avoiding car load dynamical system too high because long-term work is operated under heavy load operating mode transmission gear pair temperature rise, under the premise meeting variator lubrication demand, with the temperature of gear-box lubricating oil 12 and Oil pump electrical machinery 132 busbar voltage for input variable, coupling Oil pump electrical machinery 132 input voltage, it is achieved the reduction of system 100 power consumption.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " exemplary embodiment ", " example ", " concrete example " or " some examples " etc. means in conjunction with described embodiment or example describe are contained at least one embodiment or the example of the present invention.In this manual, the schematic representation of above-mentioned term is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiments or example.
While embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that: these embodiments can being carried out multiple change, amendment, replacement and modification when without departing from principles of the invention and objective, the scope of the present invention is limited by claim and equivalent thereof.
Claims (10)
1. the gearbox lubrication method being applicable to hybrid vehicle, it is characterized in that, described automobile includes change speed gear box, lubricating oil, electrodynamic pump, mechanical pump, temperature sensor and controller, described lubricating oil is contained in described change speed gear box, described electrodynamic pump and described mechanical pump are respectively communicated with bottom and the top of described change speed gear box, for thinking described gearbox lubrication by the bottom sucking-off from described change speed gear box of the described lubricating oil and after pressurizeing from the top spray of described change speed gear box, described temperature sensor is for sensing the temperature of described lubricating oil, said method comprising the steps of:
S11: described controller judges the mode of operation of described automobile, and described mode of operation includes electric-only mode and hybrid mode；
S12: under described electric-only mode, the described controller temperature according to described lubricating oil, control described electrodynamic pump with different power to described gearbox lubrication；And
S13: under described hybrid mode, described controller cuts out described electrodynamic pump, and described mechanical pump starts with engine start described gearbox lubrication.
2. the method for claim 1, it is characterized in that, the temperature of described lubricating oil and the described electrodynamic pump power negative correlation to described gearbox lubrication, along with the temperature of described lubricating oil raises, described controller controls described electrodynamic pump and the power of described gearbox lubrication is gradually reduced.
3. method as claimed in claim 2, it is characterised in that detect the temperature of described lubricating oil；If the temperature of described lubricating oil is less than the first preset temperature, described controller controls electrodynamic pump and starts with the first dutycycle；
If the temperature of described lubricating oil is less than the second preset temperature and more than described first preset temperature, then judge the busbar voltage of described electrodynamic pump, if the busbar voltage of electrodynamic pump is less than default busbar voltage, described controller controls described electrodynamic pump and starts with the second dutycycle, if the busbar voltage of described electrodynamic pump is more than described default busbar voltage, described controller controls described electrodynamic pump and starts with the 3rd dutycycle；
If the temperature of described lubricating oil is less than the 3rd preset temperature and more than described second preset temperature, then judge the busbar voltage of described electrodynamic pump, if the busbar voltage of described electrodynamic pump is less than described default busbar voltage, described controller controls described electrodynamic pump and starts with the 4th dutycycle, if the busbar voltage of described electrodynamic pump is more than described default busbar voltage, described controller controls described electrodynamic pump and starts with the 5th dutycycle；
If the temperature of described lubricating oil is more than three preset temperatures, then judge the busbar voltage of described electrodynamic pump, if the busbar voltage of described electrodynamic pump is less than described default busbar voltage, described controller controls described electrodynamic pump and starts with the 6th dutycycle, if the busbar voltage of described electrodynamic pump is more than described default busbar voltage, described controller controls described electrodynamic pump and starts with the 7th dutycycle；
Wherein, described first preset temperature to described 3rd preset temperature is gradually increased, and described first dutycycle to described 7th dutycycle is gradually reduced.
4. method as claimed in claim 2, it is characterised in that detect the temperature of described lubricating oil；If the temperature of described lubricating oil is less than the 4th preset temperature, described controller controls described electrodynamic pump and runs with the 8th dutycycle；
If the temperature of described lubricating oil is less than the 5th preset temperature and more than described four preset temperature, then judge the busbar voltage of described electrodynamic pump, if the busbar voltage of described electrodynamic pump is less than default busbar voltage, described controller controls described electrodynamic pump and runs with the 9th dutycycle, if the busbar voltage of described electrodynamic pump is more than described default busbar voltage, described controller controls described electrodynamic pump and runs with the tenth dutycycle；
If the temperature of described lubricating oil is less than the 6th preset temperature and more than described five preset temperature, then judge the busbar voltage of described electrodynamic pump, if the busbar voltage of described electrodynamic pump is less than described default busbar voltage, the electrodynamic pump that described controller controls runs with the 11st dutycycle, if the busbar voltage of described electrodynamic pump is more than described default busbar voltage, described controller controls described electrodynamic pump and runs with the 12nd dutycycle；
If the temperature of described lubricating oil is more than described 6th preset temperature, then judge the busbar voltage of described electrodynamic pump, if the busbar voltage of described electrodynamic pump is less than described default busbar voltage, described controller controls described electrodynamic pump and runs with the 13rd dutycycle, if the busbar voltage of described electrodynamic pump is more than described default busbar voltage, described controller controls described electrodynamic pump and runs with the 14th dutycycle；
Wherein, described 4th preset temperature to described 6th preset temperature is gradually increased, and described 8th dutycycle to described 14th dutycycle is gradually reduced.
5. the method for claim 1, it is characterised in that before described automobile meets driving conditions, described controller controls described electric priming pump with to described gearbox lubrication；
When, after described electrodynamic pump continuous service Preset Time, described automobile is still unsatisfactory for this driving conditions, described controller controls described electrodynamic pump and cuts out, and wherein this driving conditions is: the speed that the gear of described automobile is non-park position and described automobile is not zero.
6. the speed changing box lubricating system being applicable to hybrid vehicle, it is characterised in that include change speed gear box, lubricating oil, electrodynamic pump, mechanical pump, temperature sensor and controller；
Described lubricating oil is contained in described change speed gear box, described electrodynamic pump and described mechanical pump are respectively communicated with bottom and the top of described change speed gear box, for thinking described gearbox lubrication from the top spray of described change speed gear box after the bottom sucking-off from described change speed gear box of the described lubricating oil pressurization；
Described temperature sensor is for sensing the temperature of described lubricating oil；
Described controller is for judging the mode of operation of described automobile, and described mode of operation includes electric-only mode and hybrid mode；
Under described electric-only mode, the described controller temperature according to described lubricating oil, control described electrodynamic pump with different power to described gearbox lubrication；
Under described hybrid mode, described controller cuts out described electrodynamic pump, and described mechanical pump starts with engine start described gearbox lubrication.
7. system as claimed in claim 6, it is characterized in that, the temperature of described lubricating oil and the described electrodynamic pump power negative correlation to described gearbox lubrication, along with lubricating oil temperature raises, described controller controls described electrodynamic pump and the power of described gearbox lubrication is gradually reduced.
8. system as claimed in claim 7, it is characterised in that described temperature sensor detects the temperature of described lubricating oil；If the temperature of described lubricating oil is less than the first preset temperature, described controller controls described electrodynamic pump and starts with the first dutycycle；
If the temperature of described lubricating oil is less than the second preset temperature and more than described first preset temperature, then described controller judges the busbar voltage of described electrodynamic pump, if the busbar voltage of described electrodynamic pump is less than described default busbar voltage, described controller controls described electrodynamic pump and starts with the second dutycycle, if the busbar voltage of described electrodynamic pump is more than described default busbar voltage, described controller controls described electrodynamic pump and starts with the 3rd dutycycle；
If the temperature of described lubricating oil is less than the 3rd preset temperature and more than described second preset temperature, then described controller judges the busbar voltage of described electrodynamic pump, if the busbar voltage of described electrodynamic pump is less than described default busbar voltage, described controller controls described electrodynamic pump and starts with the 4th dutycycle, if the busbar voltage of described electrodynamic pump is more than described default busbar voltage, described controller controls described electrodynamic pump and starts with the 5th dutycycle；
If the temperature of described lubricating oil is more than described three preset temperature, then described controller judges the busbar voltage of described electrodynamic pump, if the busbar voltage of described electrodynamic pump is less than described default busbar voltage, described controller controls described electrodynamic pump and starts with the 6th dutycycle, if the busbar voltage of described electrodynamic pump is more than described default busbar voltage, described controller controls described electrodynamic pump and starts with the 7th dutycycle；
Wherein, described first preset temperature to described 3rd preset temperature is gradually increased, and described first dutycycle to described 7th dutycycle is gradually reduced.
9. system as claimed in claim 7, it is characterised in that described temperature sensor detects the temperature of described lubricating oil；If the temperature of described lubricating oil is less than the 4th preset temperature, described controller controls described electrodynamic pump and runs with the 8th dutycycle；
If the temperature of described lubricating oil is less than the 5th preset temperature and more than described four preset temperature, then described controller judges the busbar voltage of described electrodynamic pump, if the busbar voltage of described electrodynamic pump is less than default busbar voltage, described controller controls described electrodynamic pump and runs with the 9th dutycycle, if the busbar voltage of described electrodynamic pump is more than described default busbar voltage, described controller controls described electrodynamic pump and runs with the tenth dutycycle；
If the temperature of described lubricating oil is less than the 6th preset temperature and more than described five preset temperature, then described controller judges the busbar voltage of described electrodynamic pump, if the busbar voltage of described electrodynamic pump is less than described default busbar voltage, described controller controls described electrodynamic pump and runs with the 11st dutycycle, if the busbar voltage of described electrodynamic pump is more than described default busbar voltage, described controller controls described electrodynamic pump and runs with the 12nd dutycycle；
If the temperature of described lubricating oil is more than described 6th preset temperature, then described controller judges the busbar voltage of described electrodynamic pump, if the busbar voltage of described electrodynamic pump is less than described default busbar voltage, described controller controls described electrodynamic pump and runs with the 13rd dutycycle, if the busbar voltage of described electrodynamic pump is more than described default busbar voltage, described controller controls described electrodynamic pump and runs with the 14th dutycycle；
Wherein, described 4th preset temperature to described 6th preset temperature is gradually increased, and described 8th dutycycle to described 14th dutycycle is gradually reduced.
10. system as claimed in claim 6, it is characterised in that before described automobile meets driving conditions, described controller controls described electric priming pump with to described gearbox lubrication；
When, after described electrodynamic pump continuous service Preset Time, described automobile is still unsatisfactory for this driving conditions, described controller controls described electrodynamic pump and cuts out, and wherein this driving conditions is: the speed that the gear of described automobile is non-park position and described automobile is not zero.
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| CN111817503A (en) * | 2019-04-11 | 2020-10-23 | 上海汽车集团股份有限公司 | Hybrid gearbox driving motor cooling system and control method |
| CN113757354A (en) * | 2021-10-11 | 2021-12-07 | 安徽江淮汽车集团股份有限公司 | Control method and device for electronic oil pump of automatic gearbox |
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