CN1773095A - Driving device and its control method and vehicle - Google Patents
Driving device and its control method and vehicle Download PDFInfo
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- CN1773095A CN1773095A CN 200410090401 CN200410090401A CN1773095A CN 1773095 A CN1773095 A CN 1773095A CN 200410090401 CN200410090401 CN 200410090401 CN 200410090401 A CN200410090401 A CN 200410090401A CN 1773095 A CN1773095 A CN 1773095A
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Abstract
The present invention relates to a drive device and its control method and car. Said invention is aimed at more effectively making control of stop position of internal combustion engine. Said invention provides the concrete steps of its control method, including the steps of setting change mode of torque instruction of motor, setting torque obtained after the basic torque is corrected and using it as torque instruction of motor, etc.
Description
Technical field
The present invention relates to a kind of drive unit and controlling method thereof and automobile, in more detail, relate to a kind of internal-combustion engine and can be of having with moment of torsion to the drive unit and the controlling method thereof of the moment of torsion output unit of the output shaft of this internal-combustion engine output be mounted with the automobile of Power Drive Unit like this.
Background technique
In the past, as this drive unit, a kind of internal-combustion engine and can be with braking torque to the device of the generator of the bent axle of this internal-combustion engine output (for example, TOHKEMY 2001-193540 communique etc.) of having had been proposed.In this device, when stopping internal-combustion engine, by spontaneous motor in the future, export to bent axle with the rotating speed and the corresponding braking torque of rotational position of bent axle, the stop position of internal-combustion engine be controlled to be in the target zone.
Summary of the invention
In like this device, even owing to be in the higher stage, also begin stop position is in control in the target zone at the rotating speed of internal-combustion engine, compare with the occasion that internal-combustion engine stops after rotation under the inertia, be easy to generate uncomfortable feeling.In addition, under the high state of rotating speed,, therefore become the inefficient control of the superfluous braking torque of output etc. even the stop position of controlling combustion engine also is difficult to carry out accurately.
A purpose of drive unit of the present invention and controlling method thereof and automobile is: when stopping internal-combustion engine, make internal-combustion engine stop in desirable position.In addition, another purpose of drive unit of the present invention and controlling method thereof and automobile is: carry out the control of the stop position of internal-combustion engine effectively.In addition, a purpose again of drive unit of the present invention and controlling method thereof and automobile is: the starting performance that improves internal-combustion engine.
Drive unit of the present invention and controlling method thereof and to achieve these goals at least one of automobile have adopted following technological scheme.
Drive unit of the present invention is: a kind of have internal-combustion engine and can wherein, have to the drive unit of the moment of torsion output unit of the output shaft output torque of this internal-combustion engine: the device for detecting rotational position of rotational position that detects the output shaft of described internal-combustion engine; Calculate the revolution speed calculating device of the rotating speed of described internal-combustion engine; Has the instruction that the running of described internal-combustion engine stops, and by the rotating speed that described revolution speed calculating device calculates arrive before stopping as this internal-combustion engine rotating speed and before predefined the stopping during rotating speed, at rotational position according to the output shaft of this internal-combustion engine during rotating speed before arriving this and stopping, initial compression stroke when started next time is as benchmark, only differing the mode that stops on the target stop position of predetermined angular than this benchmark with this internal-combustion engine, setting is from the alteration mode setting device of the alteration mode of the moment of torsion of described moment of torsion output unit output; During with the instruction that stops in running with described internal-combustion engine, this internal-combustion engine of running control is when stopping the running of this internal-combustion engine, the described moment of torsion output unit of drive controlling, with the output torque that requires according to the rules, till setting alteration mode by described alteration mode setting device, and after setting alteration mode, stop time-control apparatus with the running of the described moment of torsion output unit of mode drive controlling of output torque according to the alteration mode of this setting by described alteration mode setting device.
In drive unit of the present invention, the rotating speed of instruction that the running with internal-combustion engine stops, internal-combustion engine arrive stop before during rotating speed, the rotational position of output shaft according to the internal-combustion engine of this moment, setting is from the alteration mode of the moment of torsion of moment of torsion output unit output, so that internal-combustion engine stops at the target stop position, and according to the alteration mode of this setting, drive controlling moment of torsion output unit is with output torque.Therefore, by arrive based on rotating speed stop before the rotational position of internal-combustion engine during rotating speed, set from the alteration mode of the moment of torsion of moment of torsion output unit output, internal-combustion engine can be controlled at the target stop position and stop.In addition, because from stopping the moment before the internal-combustion engine, drive controlling moment of torsion output unit, the stop position of controlling combustion engine more effectively.In addition, can be set at as " stopping preceding rotating speed ": in the scope of move angle of regulation that with the move angle during the compression stroke of internal-combustion engine is benchmark, the rotating speed when stopping internal-combustion engine etc.And " initial compression stroke " initial compression stroke when being engine starting, in multi-cylinder engine, be the compression stroke in the cylinder that is not limited in any one cylinder body to carry out initial compression stroke, it comprises piston travels to the stroke of upper dead center from lower dead centre the meaning.
In drive unit of the present invention like this, described alteration mode setting device can for: before arriving described stopping during rotating speed, when the rotational position of the output shaft of described internal-combustion engine is in the predetermined range, the alteration mode of established standards, when the rotational position of this output shaft is in than forward position of this predetermined range, the rotation of setting output torque suppresses to use alteration mode, compare with alteration mode with this standard, suppress the rotation of this output shaft, when the position that the rotational position of this output shaft lags behind than this predetermined range, the rotation of setting output torque promotes to use alteration mode, compares with the alteration mode with this standard, promotes the device of the rotation of this output shaft.So, the rotational position of the output shaft of the internal-combustion engine before can stopping according to arrival during rotating speed, the alteration mode of established standards or rotation suppress the alteration mode of usefulness, the alteration mode that rotation promotes usefulness.In the drive unit of the present invention of this form, described rotation suppress with alteration mode can for: before described the stopping of arrival during rotating speed, the rotational position of the output shaft of described internal-combustion engine then suppresses when being in than forward position of this predetermined range more under the tendency of rotation of this output shaft more significantly, the alteration mode of output torque, described rotation promote with alteration mode can for: when the rotational position of the output shaft of this internal-combustion engine is in position than this predetermined range hysteresis more during rotating speed before arriving described stopping, then promoting significantly more under the tendency of rotation of this output shaft, the alteration mode of output torque.
In drive unit of the present invention, the alteration mode of being set by described alteration mode setting device can be the pattern of the relation of the transit time when setting before arriving described stopping rotating speed and the moment of torsion of output, perhaps, the pattern of the relation of the moment of torsion of the rotational position of setting described output shaft after the rotating speed before arriving described stopping and output.So, can be according to the rotational position of transit time or output shaft, with the mode drive controlling moment of torsion output unit of output torque.Set in the drive unit of the present invention of alteration mode in relation with the moment of torsion of the rotational position of setting output shaft like this and output, described rotation suppresses can be the alteration mode of the tendency setting that the moment of torsion of then exporting with the approaching more described target stop position of the rotational position of described output shaft is just big more with alteration mode, perhaps, when the rotational position of described output shaft arrives assigned position, be the alteration mode that the mode of 0 value is set substantially with the moment of torsion of output.At this, the moment of torsion of exporting when the rotational position of the output shaft of internal-combustion engine is arrived assigned position is set at 0 value substantially, be based on following consideration, promptly, by being set at as assigned position, export excess torque till can preventing when being difficult in the target stop position and stopping than target stop position position forward etc.
In addition, in drive unit of the present invention, described target stop position can for: include in the compression stroke before described initial compression stroke, piston becomes the predetermined range of the position of upper dead center.So, because the position of the initial compression stroke when making the target stop position become and need not just compressing behind the cranking internal combustion engine, thereby can improve the starting performance of internal-combustion engine away from cranking internal combustion engine.
In drive unit of the present invention like this, in the time of can having any 2 input and output power in 3, relative these 3 that are connected with live axle and running shaft with the output shaft of described internal-combustion engine, 3 shaft type power distribution integration mechanism of the axle input and output of the power relative surplus that will determine according to the power of these input and output, described moment of torsion output unit is: having can be with the device of moment of torsion to the 1st electricity (move) machine of described running shaft output and the 2nd motor that moment of torsion can be exported to described live axle.
In addition, in drive unit of the present invention, described moment of torsion output unit can for: have the 1st rotor that connects with the output shaft of described internal-combustion engine and be connected, relative the 1st rotor can counterrotating the 2nd rotor with live axle, by electromagnetic action with the 1st rotor relatively the rotatable driving of the 2nd rotor paired rotor electric machine and can be with moment of torsion to the live axle of described live axle output device with motor.
Automobile of the present invention is, be mounted with the automobile of the drive unit of above-mentioned arbitrary form, wherein, this drive unit is essentially, has internal-combustion engine and can be to the drive unit of the moment of torsion output unit of the output shaft output torque of this internal-combustion engine, wherein, have: the device for detecting rotational position of rotational position that detects the output shaft of described internal-combustion engine; Calculate the revolution speed calculating device of the rotating speed of described internal-combustion engine; Has the instruction that the running of described internal-combustion engine stops, and by the rotating speed that described revolution speed calculating device calculates arrive before stopping as this internal-combustion engine rotating speed and before predefined the stopping during rotating speed, at rotational position according to output shaft during rotating speed, this internal-combustion engine before arriving this and stopping, initial compression stroke when started next time is as benchmark, only differing the mode that stops on the target stop position of predetermined angular than this benchmark with this internal-combustion engine, setting is from the alteration mode setting device of the alteration mode of the moment of torsion of described moment of torsion output unit output; During with the instruction that stops in running with described internal-combustion engine, this internal-combustion engine of running control is when stopping the running of this internal-combustion engine, the described moment of torsion output unit of drive controlling, with the output torque that requires according to the rules, till setting alteration mode by described alteration mode setting device, and after setting alteration mode, stop time-control apparatus with running according to the described moment of torsion output unit of mode drive controlling of the alteration mode output torque of this setting by described alteration mode setting device.
In this automobile of the present invention, owing to loaded the drive unit of the present invention of any above-mentioned form, the effect that can realize realizing with drive unit of the present invention, for example by arrive based on rotating speed stop before the rotational position of internal-combustion engine during rotating speed, setting is from the alteration mode of the moment of torsion of moment of torsion output unit output, internal-combustion engine can be controlled to the effect that stops at the target stop position, perhaps, the effect of the stop position of controlling combustion engine more effectively perhaps can improve the same effects such as effect of the starting performance of internal-combustion engine.
The controlling method of drive unit of the present invention is: a kind of have an internal-combustion engine, can be to the moment of torsion output unit of the output shaft output torque of this internal-combustion engine, controlling method with the drive unit of the device for detecting rotational position of the rotational position of the output shaft that detects described internal-combustion engine, wherein, (a) rotating speed of the described internal-combustion engine of calculating, (b) has the instruction that the running of described internal-combustion engine stops, and by the rotating speed that described step (a) is calculated arrive before stopping as this internal-combustion engine rotating speed and before predefined the stopping during rotating speed, setting is from the alteration mode of the moment of torsion of described moment of torsion output unit output, with according to rotating speed before arriving this and stopping the time, the rotational position of the output shaft of this internal-combustion engine, initial compression stroke when started next time is as benchmark, this internal-combustion engine is only stopped on the target stop position that differs predetermined angular than this benchmark, (c) when the instruction that the running with described internal-combustion engine stops, this internal-combustion engine of running control is when stopping the running of this internal-combustion engine, the described moment of torsion output unit of drive controlling, with the output torque that requires according to the rules, till setting alteration mode by described step (b), and after setting alteration mode, with the described moment of torsion output unit of mode drive controlling according to the alteration mode output torque of this setting by described step (b).
In the controlling method of drive unit of the present invention, the rotating speed of instruction that the running with internal-combustion engine stops, internal-combustion engine arrive stop before during rotating speed, the rotational position of output shaft according to the internal-combustion engine of this moment, setting is from the alteration mode of the moment of torsion of moment of torsion output unit output, so that internal-combustion engine stops at the target stop position, and according to the alteration mode of this setting, drive controlling moment of torsion output unit is with output torque.Therefore, by arrive based on rotating speed stop before the rotational position of internal-combustion engine during rotating speed, set from the alteration mode of the moment of torsion of moment of torsion output unit output, internal-combustion engine can be controlled at the target stop position and stop.In addition, because from stopping the moment drive controlling moment of torsion output unit before the internal-combustion engine, the stop position of controlling combustion engine more effectively.In addition, " initial compression stroke " initial compression stroke when being engine starting, in multi-cylinder engine, be the compression stroke in the cylinder that is not limited in any one cylinder body to carry out initial compression stroke, it comprises piston from the meaning of lower dead centre transition (dividing a word with a hyphen at the end of a line) for the stroke of upper dead center.
Description of drawings
Fig. 1 is the pie graph of the formation of hybrid vehicle 20 that one embodiment of the invention schematically is shown;
The flow chart of one example of control routine during Fig. 2 motor rotation that to be mixed power that embodiment is shown carry out with electronic control unit 70;
Fig. 3 illustrates to require the explanatory drawing of torque setting with an example of chart;
Fig. 4 illustrates the flow chart of embodiment's mixed power with an example of the motor M G1 torque setting processing routine of electronic control unit 70 execution;
Fig. 5 is the explanatory drawing of an example of relation that the rotational speed N e of the basic torque T mbase of motor M G1 and motor 22 is shown;
Fig. 6 for medelling explanatory drawing based on the alteration mode notion of crank angle (crankangle) θ is shown;
Fig. 7 is the explanatory drawing of an example of the revisal torque setting chart when pattern 2 is shown;
Fig. 8 is the explanatory drawing of an example of the revisal torque setting chart when mode 3 is shown;
Fig. 9 is the explanatory drawing of an example that the alignment chart of the rotation key element that is used for mechanics explanation power distribution integration mechanism 30 is shown;
Figure 10 is the pie graph of the formation of hybrid vehicle 120 that variation schematically is shown;
Figure 11 is the pie graph of the formation of hybrid vehicle 220 that variation schematically is shown.
Embodiment
Below, the specific embodiment of the present invention is described with embodiment.Fig. 1 is the pie graph of the formation of hybrid vehicle 20 that the drive unit that is mounted with one embodiment of the invention schematically is shown.Embodiment's hybrid vehicle 20 is as diagram, has motor 22, the power distribution integration mechanism 30 of 3 shaft types that are connected with bent axle 26 by vibration damper 28 as the output shaft of motor 22, the motor M G1 that generates electricity that is connected with power distribution integration mechanism 30, the reduction gear 35 of on, gear ring axle 32a as live axle 30 that be connected, installing with power distribution integration mechanism, motor M G2 that is connected with reduction gear 35 and the mixed power of controlling whole drive unit electronic control unit 70.
Power distribution integration mechanism 30 has the sun gear 31 of external tooth gear, keep the planetary carrier 34 of rotations freely or revolution with a plurality of small gears 33 of gear ring 32 engagements with a plurality of small gears 33 with the gear ring 32 of the internal-gear of these sun gear 31 coaxial settings, with sun gear 31 engagements the time, and sun gear 31 and gear ring 32 and planetary carrier 34 constitute the planetary gear system of carrying out differential action as rotating key element.Power distribution integration mechanism 30 is: planetary carrier 34 is connected with the bent axle 26 of motor 22, sun gear 31 is connected with motor M G1, reduction gear 35 is connected with gear ring 32 by gear ring axle 32a, when motor M G1 brings into play function as generator, import from planetary carrier 34, power from motor 22 is allocated in sun gear 31 sides and gear ring 32 sides according to its gear ratio, and when motor M G1 brings into play function as motor, import from planetary carrier 34, from the power of motor 22 with from sun gear 31 inputs, export to gear ring 32 sides from the comprehensive back of the power of motor M G1.To the power of gear ring 32 output from gear ring axle 32a, by gear (transmission) mechanism 60 and differential gear 62, finally to driving wheel 63a, the 63b of vehicle output.
Any one structure that has the generator drive of can be used as and can be used as motor-driven known synchronous generator motor of motor M G1 and motor M G2 is carried out the exchange of electric power by inverter 41,42 and storage battery 50.The line of electric force 54 that inverter 41,42 is connected with storage battery 50 is made of each inverter 41,42 shared positive electrode bus and negative pole bus, and the electric power of one of motor M G1, MG2 generating can be by another electrical consumption.Therefore, storage battery 50 discharges and recharges according to the electric power or the power shortage of motor M G1, any one generation of MG2.In addition, as obtain the balance of electric power revenue and expenditure by motor M G1, MG2, then storage battery 50 does not does not just discharge and recharge.Motor M G1, MG2 each by motor with electronic control unit (below be called motor ECU) 40 drive controlling.Import the necessary signals that drive controlling motor M G1, MG2 use to motor ECU40, for example the signal of the rotational position detecting sensor of using from the rotational position of the rotor that detects motor M G1, MG2 43,44 or input go out by not shown current sensor senses, be applied to phase current on motor M G1, the MG2 etc., by motor ECU40 to inverter 41,42 output switch control signals.Motor ECU40 and mixed power are with electronic control unit 70 connection of communicating by letter, according to from mixed power the time with control signal drive controlling motor M G1, the MG2 of electronic control unit 70, as required with the data relevant with the operating condition of motor M G1, MG2 to mixed power with electronic control unit 70 outputs.
Mixed power is made of the microprocessor that with CPU72 is the center with electronic control unit 70, except CPU72, also has the ROM74 of memory processor, the RAM76 of temporary memory data, not shown input and output port and COM1.Fire signal from ignition switch 80, shift position SP from the shift position sensor 82 of the operating position that detects speed change lever 81, accelerator pedal aperture (stroke) Acc from the accelerator pedal position sensor 84 of the depression amount that detects accelerator pedal 83, from the brake pedal position BP of the brake pedal position sensor 86 of the depression amount that detects brake petal 85, from the vehicle velocity V of vehicle speed sensor 88 etc. by input port to mixed power with electronic control unit 70 inputs.Mixed power, is connected with Engine ECU 24 or motor ECU40, storage battery ECU52 by COM1 as aforementioned with electronic control unit 70, exchanges various control signals or data with Engine ECU 24 or motor ECU40, storage battery ECU52.
Embodiment's hybrid vehicle 20 based on the driver to the depression amount of accelerator pedal 83 corresponding accelerator pedal aperture Acc and vehicle velocity V, calculating should be to the moment of torsion that requires as the gear ring axle 32a of live axle output, running control motor 22 and motor M G1 and motor M G2 will be requiring the corresponding demanded driving force of wanting of moment of torsion to export to gear ring axle 32a with this.Running control as motor 22 and motor M G1 and motor M G2, have: when turning round control motor 22 from the mode of motor 22 output, to carry out torque conversion with motor M G1 and motor M G2 and the mode drive controlling motor M G1 that exports to gear ring axle 32a and the torque conversion operation mode of motor M G2 by power distribution integration mechanism 30 from the whole of the power of motor 22 outputs with the power of wanting demanded driving force to match; Or when turning round control motor 22 from the mode of motor 22 output with the power of wanting the needed electric power sum of discharging and recharging of demanded driving force and storage battery 50 to match, with discharging and recharging along with storage battery 50, along with a part of by power distribution integration mechanism 30 and torque conversion due to motor M G1 and the motor M G2 from the whole of the power of motor 22 output or its, mode drive controlling motor M G1 that will demanded driving force exports to gear ring axle 32a and the charge-discharge drive mode of motor M G2; With the running of shutting engine down 22, will with want power that demanded driving force matches to the turn round motor rotation pattern etc. of control of the mode of gear ring axle 32a output from motor M G2.
In the hybrid vehicle 20 of like this present embodiment of structure,, be equivalent to the structure except gearing 60, differential gear 62 and live axle 63a, 63b as drive unit.
Below, the action of the embodiment's of formation like this hybrid vehicle 20, the particularly action during shutting engine down 22 runnings are described.Fig. 2 is the flow chart of an example of control routine when the motor rotation of being carried out by mixed power usefulness electronic control unit 70 is shown.This routine is that as operation mode selection motor rotation pattern, when the instruction that the running with (generation) motor 22 stops, each scheduled time of this routine (for example every 8msec) is carried out repeatedly.In addition, the beginning of the processing that control routine carries out during with this motor rotation side by side, by Engine ECU 24 stopping of carrying out that fuel in the motors 22 sprays etc.
During actuating motor when running control routine, the mixed power CPU72 of electronic control unit 70, at first, carry out from the accelerator pedal aperture Acc of accelerator pedal position sensor 84 or the processing (step S100) imported from the needed data of control of vehicle velocity V of vehicle speed sensor 88 etc.
Then, set the moment of torsion that requires as vehicle according to the accelerator pedal aperture Acc of input and vehicle velocity V and should to is connected with driving wheel 63a, 63b, require torque T r as what the gear ring axle 32a of live axle exported
*(step S110).Require torque T r
*In an embodiment, to preestablish accelerator pedal aperture Acc, vehicle velocity V and to require torque T r
*Relation, as requiring torque setting to remember in ROM74 with chart, when giving accelerator pedal aperture Acc and vehicle velocity V, the corresponding torque T r that requires of the chart that can derive and set and remember
*Fig. 3 illustrates and requires the example of torque setting with chart.
Then, set the torque command Tm1 of motor M G1
*(step S120).Now to stopping of being undertaken by Engine ECU 24 that fuel in the motor 22 sprays play shutting engine down 22 runnings during take in.In this period, as the torque command Tm1 that sets motor M G1
*Processing, the illustrated MG1 torque setting of execution graph 4 are handled routines.Below, the explanation of control routine when interrupting motor rotation describes but the MG1 torque setting is handled routine.
Handle in the routine in the MG1 torque setting, at first, carry out the crank angle θ of input motor 22 and the processing (step S200) of rotational speed N e.At this, the crank angle θ of motor 22 with rotational speed N e is: by transmit through communicating by letter by Engine ECU 24 input, by crank position sensor 23 detected crank angle θ and the rotational speed N e that calculates based on this crank angle θ.
Afterwards, when the rotational speed N e of motor 22 does not reach rotational speed N estp before stopping, set the torque command Tm1 of basic torque T mbase as motor M G1
*(step S210 S220), finishes this MG1 torque setting and handles routine.At this, rotational speed N estp preestablishes as shutting engine down 22 preceding rotating speeds before stopping, in the present embodiment, usually, with angle between the compression stroke (stroke) of rolling motor 22 when 4 Cylinder engines (for example be 180 ℃ of A etc.) and the mode that stops, wait the rotating speed (for example, 300rpm etc.) of obtaining and preestablish motor 22 by experiment.In addition, basic torque T mbase is as being set from the moment of torsion of motor M G1 output, when reducing the rotating speed of motor 22 reposefully, stops the back at motor 22 and keeps piston.Fig. 5 illustrates the explanatory drawing that concerns an example of the rotational speed N e of basic torque T mbase and motor 22.As diagram, basic torque T mbase is set at: up to the rotational speed N e of motor 22 arrive stop before rotational speed N estp, set for and suppress the braking torque that motor 22 rotates, the time point of rotational speed N estp is converted to the moment of torsion that keeps piston before rotational speed N e arrival stops.
In addition, before arriving and to stop, the rotational speed N e of the motor 22 of input during rotational speed N estp, sets the torque command Tm1 of motor M G1 according to the crank angle θ of this moment
*Alteration mode (step S230).Fig. 6 for medelling explanatory drawing based on the notion of the alteration mode of crank angle θ is shown.Torque command Tm1
*Alteration mode in the present embodiment, as diagram, as 3 kinds of patterns of pattern 1～3.Pattern 1 is: according to aforesaid basic torque T mbase, when drive motor MG1, shutting engine down 22, prediction motor 22 at the target stop position (for example, from upper dead center-40 ℃ A to upper dead center+20 ℃ A etc.) occasion that stops, in the present embodiment, stop with arrival before crank angle θ during rotational speed N estp be in when upper dead center-40 ℃ A is in the scope of upper dead center+60 ℃ A as object.Pattern 2 is: according to basic torque T mbase, when drive motor MG1, shutting engine down 22, prediction motor 22 is surpassing the occasion that stops on the position of target stop position, when in the present embodiment, being in the scope of from upper dead center+60 ℃ A to upper dead center+110 ℃ A (70 ℃ of A) with crank angle θ as object.Mode 3 is: according to basic torque T mbase, when drive motor MG1, shutting engine down 22, the occasion that prediction motor 22 stops on the position that does not arrive the target stop position, in the present embodiment, be in when upper dead center-70 ℃ A is in the scope of upper dead center-40 ℃ A as object with crank angle θ.In addition, the setting of this alteration mode just first (the rotational speed N e of motor 22 arrive and stop before behind the rotational speed N estp 1 time) is carried out, in case after setting alteration mode, when carrying out this routine repeatedly, skip and proceed to the processing of step S240 described later.
After so setting alteration mode, correspondingly set moment of torsion behind the basic torque T mbase of revisal as the torque command Tm1 of motor M G1 with the alteration mode of setting
*(step S240) finishes this MG1 torque setting and handles routine.When alteration mode is pattern 1,, then, basic torque T mbase directly can be set at torque command Tm1 on the target stop position because prediction motor 22 stops as according to basic torque T mbase drive motor MG1
*
When alteration mode is pattern 2,, surpasses the target stop position owing to predict motor 22, thereby want the basic torque T mbase of revisal, to suppress the rotation of motor 22 even according to basic torque T mbase drive motor MG1.In the present embodiment, the revisal moment of torsion of the basic torque T mbase of revisal and the relation of crank angle θ, wait by experiment to pre-determine, and remember in ROM74 etc., use this revisal torque setting chart to come the basic torque T mbase of revisal as revisal torque setting chart.Fig. 7 is the explanatory drawing of an example of the revisal torque setting chart when alteration mode being shown being pattern 2.As diagram, it is then big more away from upper dead center more to set braking torque for motor 22.At this, when crank angle θ is in the position of before top dead center, to set braking torque less, this is based in the way of compression stroke, in case the cause of the possibility that piston returns then can take place the bigger braking torque of output.In addition, when crank angle θ is in above the position of upper dead center+60 ℃ A, be 0 value with the revisal torque setting, this is because before being difficult in the target stop position and stopping situation, can prevent that braking torque etc. from forcing output and the cause of uncomfortable feeling takes place.
When alteration mode is mode 3,, does not arrive the target stop position owing to predict motor 22, thereby want the basic torque T mbase of revisal, to promote the rotation of motor 22 even according to basic torque T mbase drive motor MG1.Fig. 8 is the explanatory drawing of an example of the revisal torque setting chart when alteration mode being shown being mode 3.With Fig. 7 more as can be known, in the revisal torque setting chart when mode 3, set for, preceding, with the basic torque T mbase of moment of torsion revisal of the direction of auxiliary engine 22 rotation near target stop position (for example up to upper dead center-50 ℃ A).
The explanation of control routine when returning the motor rotation of Fig. 2.Handle the torque command Tm1 that routine is set motor M G1 by the MG1 torque setting
*After, usage requirement torque T r
*With torque command Tm1
*And the gear of power distribution integration mechanism 30 is than ρ, calculated as should be from the torque command Tm2 of the moment of torsion of motor M G2 output by following formula (1)
*(step S130).This formula (1) is the mechanical relationship formula of the rotation key element of relative power distribution integration mechanism 30.Fig. 9 illustrates the alignment chart of the mechanical relationship of rotating speed in the rotation key element of power distribution integration mechanism 30 and moment of torsion.Among the figure, the S axle on the left side is expressed as the rotating speed of sun gear 31 of the rotational speed N m1 of motor M G1, the C axle is expressed as the rotating speed of planetary carrier 34 of the rotational speed N e of motor 22, and the rotational speed N m2 that the R axle is expressed as motor M G2 multiply by the rotational speed N r of the gear of reduction gear 35 than the gear ring 32 of Gr.As diagram, as requiring torque T r to gear ring axle 32a output
*, can be with as with respect to moment of torsion (Tm1 from the counter-force of the moment of torsion of motor M G1 output
*/ ρ) with require torque T r
*The moment of torsion of sum is exported from motor M G2.Thus, on the bent axle 26 of motor 22 time, can torque T r will be required from the torsional interaction of motor M G1 output
*To gear ring axle 32a output as live axle.
Tm2
*＝{Tr
*+Tm1
*/ρ}/Gr...(1)
Then, with the torque command Tm1 of the motor M G1, the MG2 that set
*, Tm2
*Transmit (step S140), control routine when finishing this motor rotation to motor ECU40.Accept torque command Tm1
*, Tm2
*Motor ECU40 carry out the switch control of the switching element of inverter 41,42, with at torque command Tm1
*Following drive motor MG1, simultaneously, at torque command Tm2
*Following drive motor MG2.
According to the hybrid vehicle 20 of the foregoing description,, before arriving and stop, the rotational speed N e of motor 22 during rotational speed N estp, sets the torque command Tm1 of motor M G1 according to the crank angle θ of this moment by when shutting engine down 22 running
*Alteration mode, along with the alteration mode of this setting, the torque command Tm1 of revisal motor M G1
*Basic torque T mbase, motor 22 can be stopped near the upper dead center of the compression stroke that is in the target stop position.As a result, owing to made motor 22 stop at away from the position of initial compression stroke and the compression after need not to start at 22 o'clock ensuing piloting engine, thus can improve the startability of motor 22.In addition, during owing to rotational speed N estp before the rotational speed N e of motor 22 arrival stops, beginning the revisal of basic torque T mbase, can more effectively carry out the control of the stop position of motor 22.
In embodiment's hybrid vehicle 20, be earthquake pattern when being pattern 1, basic torque T mbase directly is set at torque command Tm1
*; but owing to consider the solid deviation (バ ラ Star キ) etc. of motor 22; be not necessarily limited on the target stop position and stop; for example; when even the earthquake pattern is pattern 1; the basic torque T mbase of revisal torque setting chart revisal in the time of also can using the illustrated mode 3 of Fig. 8 sets torque command Tm1
*
In embodiment's hybrid vehicle 20, torque command Tm1
*Alteration mode be pattern 1～3 these 3 kinds of patterns, but much less, alteration mode is not limited to this 3 kinds of patterns.Promptly, the crank angle of the motor 22 before can stopping according to arrival during rotational speed N estp is set, motor 22 is stopped at alteration mode on the target stop position, for example, alteration mode is set at: (in the present embodiment with overproof more crank angle θ, crank angle θ during for pattern 1) locates the basic torque T mbase of (with this braking torque) revisal under the mode that then braking torque is big more, also alteration mode can be set at: with the basic torque T mbase of (with this auxiliary torque) revisal under the crank angle θ place mode that then auxiliary torque is big more that lags behind standard more.
In embodiment's hybrid vehicle 20, revisal torque setting chart is a size of setting the revisal moment of torsion corresponding to crank angle θ, but can not set corresponding to crank angle θ, for example, can set the size of revisal moment of torsion corresponding to the transit time, also can be with crank angle θ irrespectively with the revisal moment of torsion as fixed value.
In embodiment's hybrid vehicle 20, the moment of torsion behind the basic torque T mbase of setting revisal is as the torque command Tm1 of motor M G1
*, but can the basic torque T mbase of not revisal, even directly set torque command Tm1
*Also harmless.
In embodiment's hybrid vehicle 20, as revisal torque setting chart, illustration the chart of Fig. 7 and Fig. 8, but much less be not limited to illustrative chart.That is, for example, in the chart when pattern 2, can not be set at 0 value by the revisal moment of torsion when surpassing the target stop position.
In embodiment's hybrid vehicle 20, be by reduction gear 35 with the power speed changing of motor M G2 after to gear ring axle 32a output, but also can be illustrated as the hybrid vehicle 120 of the variation of Figure 10, also can be with the power of motor M G2 with axletree (axletree that is connected with wheel 64a, 64b among Figure 10) connection different with the axletree (axletree that is connected with driving wheel 63a, 63b) that connects gear ring axle 32a.
In embodiment's hybrid vehicle 20, be with the power of motor 22 by power distribution integration mechanism 30 to driving wheel 63a, 63b connects, as the gear ring axle 32a of live axle output, but also can be illustrated as the hybrid vehicle 220 of the variation of Figure 11, can comprise have the internal rotor 232 that is connected with the bent axle 26 of motor 22 and with power to driving wheel 63a, the external rotor 234 that the live axle of 63b output connects, with the part of the power of motor 22 when live axle transmits, with remaining power-supply change-over is the paired rotor electric machine 230 of electric power.
In embodiment's hybrid vehicle 20, be a kind of power with motor 22 by power distribution integration mechanism 30 to hybrid vehicle as parallel connection (the パ ラ レ Le) type of the gear ring axle 32a output of live axle, but also applicable to the hybrid vehicle of so-called serial type.In addition, also applicable to the running of carrying out motor continually/vehicle that stop, that have the hold function that dallies.In addition, if moment of torsion can be to the vehicle of the internal combustion engine output shaft output unit of motor etc., even be applicable to that other various vehicles are also harmless.
More than, with embodiment example of the present invention is illustrated, but the present invention is not limited to these embodiments, much less, in the scope that does not break away from main idea of the present invention, can adopt various forms to implement.
Claims (13)
1, a kind of have internal-combustion engine and can it is characterized in that having to the drive unit of the moment of torsion output unit of the output shaft output torque of this internal-combustion engine:
Detect the device for detecting rotational position of rotational position of the output shaft of described internal-combustion engine;
Calculate the revolution speed calculating device of the rotating speed of described internal-combustion engine;
Have instruction that the running of described internal-combustion engine stops and by the rotating speed that described revolution speed calculating device calculates arrive before stopping as this internal-combustion engine rotating speed and before predefined the stopping during rotating speed, rotational position according to the output shaft of this internal-combustion engine during rotating speed before arriving this and stopping, initial compression stroke when started next time is as benchmark, only differing the mode that stops on the target stop position of predetermined angular than this benchmark with this internal-combustion engine, setting is from the alteration mode setting device of the alteration mode of the moment of torsion of described moment of torsion output unit output; With
When the instruction that the running with described internal-combustion engine stops, this internal-combustion engine of running control is when stopping the running of this internal-combustion engine, the described moment of torsion output unit of drive controlling, with the output torque that requires according to the rules, till setting alteration mode by described alteration mode setting device, and after setting alteration mode, stop time-control apparatus with the running of the described moment of torsion output unit of mode drive controlling of output torque according to the alteration mode of this setting by described alteration mode setting device.
2, according to the described drive unit of claim 1, it is characterized in that, described alteration mode setting device is: before arriving described stopping during rotating speed, when the rotational position of the output shaft of described internal-combustion engine is in the predetermined range, the alteration mode of established standards, when the rotational position of this output shaft is in than forward position of this predetermined range, the rotation of setting output torque suppresses to use alteration mode, compare with alteration mode with this standard, suppress the rotation of this output shaft, when the position that the rotational position of this output shaft lags behind than this predetermined range, the rotation of setting output torque promotes to use alteration mode, compare with alteration mode, promote the device of the rotation of this output shaft with this standard.
3, according to the described drive unit of claim 2, it is characterized in that, described rotation suppresses: before described the stopping of arrival during rotating speed, the rotational position of the output shaft of described internal-combustion engine then suppresses when being in than forward position of this predetermined range more under the tendency of rotation of this output shaft more significantly, the alteration mode of output torque, described rotation promotes: when the rotational position of the output shaft of this internal-combustion engine is in position than this predetermined range hysteresis more during rotating speed before arriving described stopping, then promoting significantly more under the tendency of rotation of this output shaft, the alteration mode of output torque.
According to the described drive unit of claim 1, it is characterized in that 4, the alteration mode of being set by described alteration mode setting device is: the pattern of the relation of the transit time when setting before arriving described stopping rotating speed and the moment of torsion of output.
According to the described drive unit of claim 1, it is characterized in that 5, the alteration mode of being set by described alteration mode setting device is: the pattern of the relation of the rotational position of setting described output shaft after the rotating speed before arriving described stopping and the moment of torsion of output.
6, according to the described drive unit of claim 2, it is characterized in that, alteration mode by described alteration mode setting device setting is: the pattern of the relation of the rotational position of setting described output shaft after the rotating speed before arriving described stopping and the moment of torsion of output, described rotation inhibition with alteration mode is: the alteration mode of the tendency setting that the moment of torsion of then exporting with the approaching more described target stop position of the rotational position of described output shaft is just big more.
7, according to the described drive unit of claim 6, it is characterized in that, described rotation suppress with alteration mode be: when the rotational position of described output shaft arrives assigned position, be the alteration mode that the mode of 0 value is set substantially with the moment of torsion of exporting.
According to the described drive unit of claim 1, it is characterized in that 8, described target stop position is: include the predetermined range that piston in the compression stroke before described initial compression stroke becomes the position of upper dead center.
According to the described drive unit of claim 1, it is characterized in that 9, rotating speed is before described the stopping: in the scope of move angle of regulation that with the move angle between the compression stroke of described internal-combustion engine is benchmark, set the rotating speed when stopping this internal-combustion engine for.
10, according to the described drive unit of claim 1, it is characterized in that,
When having 3 of being connected with live axle and running shaft, any 2 input and output power in relative these 3 with the output shaft of described internal-combustion engine, 3 shaft type power distribution integration mechanism of the axle input and output of the power relative surplus that will determine according to the power of these input and output
Described moment of torsion output unit is: having can be with moment of torsion to the 1st motor of described running shaft output and can be with the device of moment of torsion to the 2nd motor of described live axle output.
11, according to the described drive unit of claim 1, it is characterized in that, described moment of torsion output unit is: have the 1st rotor that connects with the output shaft of described internal-combustion engine and be connected with live axle, relative the 1st rotor can counterrotating the 2nd rotor, by electromagnetic action with the 1st rotor relatively the rotatable driving of the 2nd rotor paired rotor electric machine and can be with moment of torsion to the live axle of described live axle output device with motor.
12, a kind of automobile that is mounted with each described drive unit in the claim 1～11.
13, a kind ofly have internal-combustion engine, can and detect the controlling method of drive unit of device for detecting rotational position of rotational position of the output shaft of described internal-combustion engine, it is characterized in that to the moment of torsion output unit of the output shaft output torque of this internal-combustion engine,
(a) rotating speed of the described internal-combustion engine of calculating,
(b) has the instruction that the running of described internal combustion engine stops; And arrive rotating speed before stopping as this internal combustion engine and predefined when stopping front rotating speed by the rotating speed that described step (a) is calculated; The position of rotation of output shaft during according to rotating speed before arriving this and stopping, this internal combustion engine; Initial compression stroke when started next time is as benchmark; The mode that only stops at the target stop position that differs predetermined angular than this benchmark with this internal combustion engine; Setting is from the alteration mode of the moment of torsion of described torque output device output
(c) when the instruction that the running with described internal-combustion engine stops, this internal-combustion engine of running control is when stopping the running of this internal-combustion engine, the described moment of torsion output unit of drive controlling, with the output torque that requires according to the rules, till setting alteration mode by described step (b), and after setting alteration mode by described step (b), according to the alteration mode of this setting with the described moment of torsion output unit of the mode drive controlling of output torque.
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| CNB2004100904017A CN100379969C (en) | 2004-11-12 | 2004-11-12 | Driving device and its control method and vehicle |
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|---|---|---|---|
| CNB2004100904017A CN100379969C (en) | 2004-11-12 | 2004-11-12 | Driving device and its control method and vehicle |
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| CN100379969C CN100379969C (en) | 2008-04-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104205612A (en) * | 2012-03-22 | 2014-12-10 | 丰田自动车株式会社 | Vehicle control device |
| CN107035551A (en) * | 2016-02-03 | 2017-08-11 | 光阳工业股份有限公司 | Cut the engine brake control method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001193540A (en) * | 2000-01-14 | 2001-07-17 | Kokusan Denki Co Ltd | Stop position controlling method and device for internal combustion engine |
| JP3707408B2 (en) * | 2001-08-29 | 2005-10-19 | トヨタ自動車株式会社 | Internal combustion engine stop / start control device |
| JP3896952B2 (en) * | 2002-02-22 | 2007-03-22 | トヨタ自動車株式会社 | Drive device |
| JP3815441B2 (en) * | 2003-02-04 | 2006-08-30 | トヨタ自動車株式会社 | Internal combustion engine stop / start control device |
-
2004
- 2004-11-12 CN CNB2004100904017A patent/CN100379969C/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104205612A (en) * | 2012-03-22 | 2014-12-10 | 丰田自动车株式会社 | Vehicle control device |
| CN104205612B (en) * | 2012-03-22 | 2015-09-30 | 丰田自动车株式会社 | The control device of vehicle |
| CN107035551A (en) * | 2016-02-03 | 2017-08-11 | 光阳工业股份有限公司 | Cut the engine brake control method |
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