CN106184191A

CN106184191A - Driving control system

Info

Publication number: CN106184191A
Application number: CN201610355662.XA
Authority: CN
Inventors: 饭野隼人
Original assignee: Suzuki Motor Corp
Current assignee: Suzuki Motor Corp
Priority date: 2015-05-29
Filing date: 2016-05-26
Publication date: 2016-12-07
Anticipated expiration: 2036-05-26
Also published as: DE102016209014A1; JP2016222100A; CN106184191B

Abstract

Driving control system without compromising on fuel economy raising effect the SOC that can manage battery rightly is provided.Judge that torque calculating section (23) calculates according to the judgement torque making the electromotor 2 motor torque when the operating point action that the thermal efficiency is optimal obtain corresponding to the SOC of battery (11).Then, operation control part (24) asking torque and judging that the relation of torque obtains target engine torque and target motor torque according to driver, and control electromotor (2), and the action by this target motor direct torque motor (3) by this target engine torque.

Description

Driving control system

Technical field

The present invention relates to control the action of electromotor and according to mesh according to target engine torque Mark motor torque controls the driving control system of the action of motor.

Background technology

In the hybrid vehicle utilizing electromotor and motor to travel, driving control system Determine that target engine torque and target motor turn for meeting the request torque of driver Square.

As existing this driving control system, it is known that following system: it is to improve fuel For the purpose of economy, it is judged that depending on whether electromotor operating point is according to high thermal efficiency line The region of regulation, in the case of electromotor operating point is not at the region of regulation, correction Electromotor operating point is in the region of regulation.

Prior art literature

Patent documentation

Patent documentation 1: JP 2013-071467 publication

Summary of the invention

The problem that invention is to be solved

If here, and carrying out battery overcharge or the overdischarge of discharge and recharge between motor Then can accelerate deterioration.Accordingly, it would be desirable to SOC (the State of Charge: fill of management battery Electricity condition) it is in the range of regulation (such as 40%～80%).

But, the system described in patent documentation 1 is only to go out from the viewpoint improving fuel economy Send out decision electromotor operating point, and do not take into account the SOC of battery to determine electromotor action Point.Therefore, even if the system described in patent documentation 1 is by being corrected to electromotor operating point Being capable of fuel economy in the region of regulation to improve, it and does not takes into account battery yet SOC, thus battery can overcharge or overdischarge sometimes.

Therefore, present invention aim at, it is provided that a kind of driving control system, its without compromising on Fuel economy improves effect, and can manage the SOC of battery rightly.

For solving the scheme of problem

One mode of the invention solving the driving control system of the problems referred to above is to drive to control system System, it controls the action of electromotor according to target engine torque, turns according to target motor Square controls the action of motor, has: accelerator operation amount test section, and it detects accelerator Operational ton；Engine speed test section, it detects engine speed；Request torque calculating section, Its request calculating driver according to above-mentioned accelerator operation amount and above-mentioned engine speed turns Square；Charge residue test section, the charge residue of its detection battery；Judge that torque calculates Portion, it calculates judgement torque, above-mentioned judgement torque corresponding to the charge residue of above-mentioned battery It is according to making the above-mentioned electromotor motor torque when the operating point action that the thermal efficiency is optimal Obtain；And operation control part, it is according to above-mentioned request torque and above-mentioned judgement torque Relation obtains above-mentioned target engine torque and above-mentioned target motor torque, and by being somebody's turn to do Target engine torque controls above-mentioned electromotor, and by this target motor direct torque The action of above-mentioned motor.

Invention effect

So, according to the present invention, previously according to making electromotor at the optimal operating point of the thermal efficiency Motor torque during action is set in obtains target engine torque and target motor turns The judgement torque used during square, and, calculate the charge residue corresponding to battery and judge to turn Square.The action judging direct torque electromotor and motor so calculated due to utilization, because of This, improve effect without compromising on fuel economy, and can manage the SOC of battery rightly.

Accompanying drawing explanation

Fig. 1 is the figure of the driving control system illustrating one embodiment of the present invention, is to illustrate Possesses the pie graph of the vehicle of driving control system.

Fig. 2 is the judgement used in the driving control system illustrating one embodiment of the present invention The figure of torque map.

Fig. 3 is in the driving control system illustrating one embodiment of the present invention in the form of a table The generating used judges the figure of torque map.

Fig. 4 is in the driving control system illustrating one embodiment of the present invention in the form of a table The electric discharge used judges the figure of torque map.

Fig. 5 illustrates the driving control system of one embodiment of the present invention with the form of coordinate diagram The generating of middle use judges the figure of torque map.

Fig. 6 illustrates the driving control system of one embodiment of the present invention with the form of coordinate diagram The electric discharge of middle use judges the figure of torque map.

Fig. 7 be in the driving control system illustrating one embodiment of the present invention perform start The flow chart that machine operating point decision processes.

Fig. 8 is to be shown in the driving control system of one embodiment of the present invention by motor The mode carrying out generating electricity determines the figure of the state of electromotor operating point.

Fig. 9 is to be shown in the driving control system of one embodiment of the present invention by motor The mode carrying out discharging determines the figure of the state of electromotor operating point.

Figure 10 is to be shown in the driving control system of one embodiment of the present invention, according to SOC is the judgement torque map in the case of 60%, does not carry out the mode of action by motor Determine the figure of the state of electromotor operating point.

Figure 11 be shown in the driving control system of one embodiment of the present invention relative to The target engine operating point of request torque and the figure of the guide look of motor torque.

Description of reference numerals

2 electromotor 3 motor 11 battery 16 accelerator operation amount test sections 17 engine speed test sections 21 ask torque calculating section 22 charge residue to be examined Survey portion 23 judges torque calculating section 24 operation control part

Detailed description of the invention

Hereinafter, the embodiment that present invention will be described in detail with reference to the accompanying.Fig. 1～Figure 11 is to say The figure of the embodiment of the driving control system of bright embodiments of the present invention.

As it is shown in figure 1, be equipped with the vehicle 1 of the driving control system of embodiments of the present invention Including electromotor 2, variator 4 and wheel 6.

Electromotor 2 is such as made up of four-stroke petrol engine, produces and makes vehicle travel Power.

Variator 4 carries out speed change to power produced by electromotor 2.Variator 4 possesses clutch Device 7, utilizes this clutch 7 on-off from the power of electromotor 2.

It addition, variator 4 possesses ring gear 5, this ring gear 5 and not shown little tooth Take turns and constitute differential gear together with side gear etc..Wheel 6 is linked by drive shaft 5a of left and right Side gear to differential gear.It is input to ring gear 5 by the power after variator 4 speed change, It is then passed to the wheel 6 of left and right.

It addition, vehicle 1 include motor 3, decelerator 8, battery 11, inverter 12 and ECU20。

Motor 3 is the electric rotating machine played a role as motor and electromotor, by inverse Become device 12 and be connected to battery 11.ECU20 is by controlling inverter 12 so that motor 3 produces Lively power runs torque or generating torque (regenerative torque).

Motor 3 is attached to ring gear 5 by decelerator 8, supplies from battery 11 by utilizing The electric power given carries out power and runs the traveling assisting vehicle 1.It addition, motor 3 is by from ring Shape gear 5 transmission power drive thus generate electricity.

So, the vehicle 1 in present embodiment is as motor 3 can be utilized electromotor 2 Power carry out the motor vehicle driven by mixed power that assists and constitute.Additionally, motor 3 is not limited to It is attached to ring gear 5, as long as being attached to the power transfer path from electromotor 2 to wheel 6 Upper.

It addition, vehicle 1 possesses accelerator operation amount test section 16 and engine speed test section 17.Accelerator operation amount test section 16 is such as arranged at not shown accelerator pedal, detection Accelerator operation amount.Engine speed test section 17 is such as arranged at the bent axle of electromotor 2, Detection engine speed.

ECU20 by possess CPU (Central Processing Unit: CPU), RAM (Random Access Memory: random access memory), ROM (Read Only Memory: read only memory), flash memory, input port, output port and mixed-media network modules mixed-media Computer unit constitute.

The ROM storage of ECU20 has various constant, various mappings etc., and stores useful In the program making this computer unit play a role as ECU20.That is, in ECU20, CPU performs the program that ROM is stored, thus this computer unit plays as ECU20 and makees With.

ECU20 is that the request torque meeting driver determines target engine torque and mesh Mark motor torque.Then, ECU20 controls electromotor 2 according to target engine torque Action, according to the action of target motor direct torque motor 3.

ECU20 possesses: request torque calculating section 21, it calculates the request torque of driver； And charge residue test section 22, the charge residue of its detection battery 11.Hereinafter, will The charge residue of battery 11 is referred to as SOC (State Of Charge: charged state).

Request torque calculating section 21 is according to adding of being detected by accelerator operation amount test section 16 Speed device operational ton and the engine speed detected by engine speed test section 17 calculate and drive The request torque of the person of sailing.

Additionally, as another embodiment of the present invention, vehicle 1 can also possess detection car The Bus-Speed Monitoring portion 18 of travel speed, detect according to by accelerator operation amount test section 16 The travel speed of the accelerator operation amount gone out and the vehicle detected by Bus-Speed Monitoring portion 18 is calculated Go out the request torque of driver.

Charge residue test section 22 is input to battery by utilizing current sensor 13 measurement 11 and from battery 11 output electric current and carry out adding up to detect SOC.SOC is with battery 11 " current residual capacity/full charge capacity × 100 " value (%) of representing.

It addition, ECU20 possesses judges torque calculating section 23 and operation control part 24.

Judge that torque calculating section 23 calculates according to making electromotor 2 exist corresponding to the SOC of battery 11 The judgement torque that motor torque during the optimal operating point action of the thermal efficiency is obtained.As above institute State, it is judged that torque have generating judge torque α and discharge judge torque β.

Operation control part 24 is obtained target according to request torque with the relation judging torque and is started Machine torque and target motor torque, and control electromotor by this target engine torque The action of 2, and the action by this target motor direct torque motor 3.

The ROM storage of ECU20 has: determining that (target engine turns electromotor operating point Square) time reference judgement torque map；The generating of reference when calculating generating and judging torque α Judge torque map；And the electric discharge of reference judges torque when calculating electric discharge and judging torque β Map.This judgement torque map, generating judge that torque map, electric discharge judge that torque map is Obtained by experiment etc..

As shown in Figure 2, it is judged that torque map is using torque and engine speed as vertical Axle and transverse axis, the generating determined as judging torque by each engine speed judges torque α and electric discharge judge that torque β obtains.

Generating judges that the torque line of torque α is almost parallel with the optimal line of the thermal efficiency and is set in heat The lower section of the optimal line of efficiency.Electric discharge judges the torque line of torque β with the optimal line of the thermal efficiency substantially Parallel and be set in the top of the optimal line of the thermal efficiency.

Therefore, generating judges with electric discharge, the torque line of torque α judges that the torque line of torque β sets It is set to almost parallel across the optimal line of the thermal efficiency each other.

Here, the optimal line of the thermal efficiency is the electromotor isoefficiency curve by representing with chain-dotted line The line at center, is determined by each engine speed and makes electromotor 2 optimal at the thermal efficiency Motor torque during operating point action and obtain.

Therefore, in judging torque map, generating judge torque line and the electric discharge of torque α Judge that region that the torque line of torque β clips, compared with outside this region, is the thermal effect of electromotor 2 Rate is excellent and can improve the region of fuel economy of electromotor 2.

In the present embodiment, ECU20 target setting motor torque in the following manner: make The operating point obtaining electromotor 2 is in torque line and the electric discharge judgement turn being judged torque α by generating In the region that the torque line of square β clips.

It addition, generating judges that torque α and electric discharge judge that torque β may correspond to the SOC of battery 11 And change.Specifically, generating judges that the torque line of torque α is that SOC is the highest, is set to The most on the lower.That is, as it is shown in figure 5, in the case of the SOC of battery 11 is low, though sharp Generate electricity with the work of electromotor 2, battery 11 also will not overcharge, therefore, set permit Permitted the electromotor 2 torque line with the motor torque of big torque action.On the other hand, at electricity In the case of the SOC height in pond 11, when the work utilizing electromotor 2 generates electricity, having can Can overcharge, therefore, set and do not utilize what the action of electromotor 2 actively carried out generating electricity to start The torque line of machine torque.

It addition, as shown in Figure 6, electric discharge judges that the torque line of torque β is that SOC is the lowest, sets Must get over by the top.That is, in the case of the SOC height of battery 11, even if making electronic energetically Machine 3 works and discharges, battery 11 also will not overdischarge, therefore, set allow to start Machine 2 is with the torque line of little torque action.On the other hand, in the situation that the SOC of battery 11 is low Under, if making motor 3 work energetically, it is likely that overdischarge, therefore, setting and sending out The torque line of the motor torque of motivation 2 positive actions.

Such as, as in figure 2 it is shown, judge torque α at the request torque A of driver less than generating In the case of, generating is judged that (start by target as electromotor operating point for torque α by ECU20 Machine torque), make electromotor 2 action.It addition, judge to turn than with generating at the SOC of battery 11 During the SOC height of battery 11 corresponding for square α, ECU20 would correspond to this higher battery 11 The generating of SOC judges that torque α ', as electromotor operating point (target engine torque), makes to send out Motivation 2 action.

That is, ECU20 judges to turn according to the generating that the size of the SOC corresponding to battery 11 sets The relation of the request torque A of square α and driver obtains target engine torque, according to so The target engine torque obtained controls the action of electromotor 2.Thus, without compromising on fuel Economy improves effect, and can manage the SOC of battery rightly.

Generating judges that torque α is with reference to Fig. 3, Fig. 5 by the judgement torque calculating section 23 of ECU20 Shown generating judges that torque map calculates.Here, Fig. 3 is to illustrate in the form of a table Generating judges the figure of torque map, and Fig. 5 is to illustrate that generating judges torque with the form of coordinate diagram The figure mapped.

Here, in the present embodiment, in order to prevent battery 11 overcharge or overdischarge and Accelerate deterioration, the range of management of the SOC of battery 11 is set to 40%～80%.

Judging in torque map in the generating shown in Fig. 3, Fig. 5, generating judges turning of torque α Square line is that SOC is the highest, is set to the most on the lower.

That is, when SOC is 40%, in order to prevent SOC from declining and overdischarge further, need Working actively of electromotor 2 to be utilized generates electricity, and therefore, generating judges that torque α is set to When being 60% than SOC high.

It addition, when SOC is 60%, when being 40% compared to SOC, it is not necessary to actively enter Row generating, therefore, when being 40% with this SOC compared with, generating judge that torque α is set to relatively Low.

It addition, when SOC is more than 80%, if utilizing the work of electromotor 2 to generate electricity, Then SOC can further up and overcharge, therefore, generating judges that torque α turns with electromotor Speed is unrelated and is 0N, does not utilize the work of electromotor 2 to generate electricity.

Additionally, SOC is generating when more than 80% judges that torque α is not limited to 0N, as long as What the action not utilizing electromotor 2 carried out overcharging low-down is worth.

Electric discharge judges that torque β is with reference to Fig. 4, Fig. 6 by the judgement torque calculating section 23 of ECU20 Shown electric discharge judges that torque map calculates.Here, Fig. 4 is to illustrate in the form of a table Electric discharge judges the figure of torque map, and Fig. 6 is to illustrate that electric discharge judges torque with the form of coordinate diagram The figure mapped.

Judging in torque map in the electric discharge shown in Fig. 4, Fig. 6, electric discharge judges turning of torque β Square line is that SOC is the lowest, is set to the most by the top.

That is, when the SOC of battery 11 is 80%, in order to prevent SOC further up and mistake Charging, needs actively to make motor 3 work and discharge, and therefore, electric discharge judges torque β It is set to when being 60% than SOC low.

It addition, when SOC is 60%, when being 80% compared to SOC, it is not necessary to actively make Motor 3 works, therefore, when being 80% with this SOC compared with, electric discharge judge that torque β sets Must be higher.

It addition, when SOC less than 40% time, if utilizing the work of motor 3 and putting Electricity, then SOC can decline and overdischarge further, and therefore, electric discharge judges torque β and starts Machine rotating speed is unrelated and is 200N, the work of unfavorable motor 3 and discharge.Here, 200N is greater than the value of the producible torque capacity of electromotor 2.

Additionally, SOC is electric discharge when less than 40% judges that torque β is not limited to 200N, as long as It it is the action of the unfavorable motor 3 the highest value that carries out over-discharge.

So, in the present embodiment, it not as in the past at 1 optimal line of the thermal efficiency On make electromotor action, but with by generating judge torque α and discharging judge torque β this 2 Bar torque line clips in the region that the mode of the optimal line of the thermal efficiency sets and makes electromotor 2 action, Therefore, without compromising on the raising effect of fuel economy.It addition, by making corresponding to SOC Generating judges that torque α and electric discharge judge these 2 torque line changes of torque β, it is possible to had both met and has driven The request torque A of the person of sailing makes electromotor with being not result in again battery 11 overcharge or overdischarge 2 and motor 3 action.

Flow chart with reference to Fig. 7 illustrates that the driving of present embodiment as constructed as above controls system The electromotor operating point decision that system is carried out processes.

As it is shown in fig. 7, first, ECU20 utilizes accelerator operation amount test section 16 detection to add Speed device operational ton, utilizes engine speed test section 17 to detect engine speed (step S1).

Then, ECU20 is according to the accelerator operation amount detected in step sl and electromotor Rotating speed, utilizes request torque calculating section 21 to calculate request torque A (step S2) of driver. Additionally, ECU20 can also detect speed in step sl to replace detection engine speed, In step s 2, request torque A is calculated according to this speed and accelerator operation amount.

Then, ECU20 utilizes charge residue test section 22 to detect the SOC (step of battery 11 Rapid S3).

Then, ECU20 calculates according to SOC and engine speed to generate electricity and judges torque α (step Rapid S4).

Then, ECU20 calculates whether request torque A judges torque α (step less than generating S5)。

In the case of the judgement of step S5 is "Yes", (request torque A judges less than generating In the case of torque α), ECU20 determines the electromotor operating point as target in step s 6 (target engine torque) and target motor torque.

Specifically, ECU20 is using as the electromotor operating point of target, (target engine turns Square) it is set as judging the equal value of torque α with generating.

Here, the difference of target engine torque with request torque A is set as target motor Torque.Specifically, in the case of request torque A judges torque α less than generating, i.e. When target engine torque is set to judge value equal for torque α with generating, target is started Machine torque and the relation that request torque is α-A, this difference is set as target motor by ECU20 Torque, controls the action of motor 3.Now, judge to turn less than generating due to request torque A Square α, therefore, ECU20 makes electromotor 2 send out with the target that the request torque A than driver is big Motivation torque α action, and exceed the electromotor of the redundance of the request torque A of driver The action of the electromotor 2 under torque is used for making motor 3 work and generate electricity.So, by Electromotor 2 action is made, therefore, it is possible to realize fuel economy in the operating point optimal at the thermal efficiency Property raising, and due to beyond driver request torque motor torque under starting The action of machine 2 is used for making motor 3 action generate electricity, it is thus possible to utilize energy efficiently Amount.Further, since ECU20 calculates the generating corresponding to SOC judges torque α, and according to This generating judges that torque α turns with the relation target setting electromotor of the request torque A of driver Square, therefore, improves effect without compromising on fuel economy, and is prevented from the mistake of battery 11 Charging.

Here, in the driving control system of present embodiment, target motor torque is mesh Mark motor torque and the difference asking torque A, therefore, the motor 3 when power is run Torque be set to when B, the relation of target engine torque=A+B is set up.Therefore, exist In step S6, turning of the motor 3 when target motor torque settings is to generate electricity by ECU20 Square i.e. negative value-B.So, motor 3 is with the difference of target engine torque with request torque A Generating torque generate electricity.Thereafter, ECU20 terminates the process of flow chart of Fig. 7.

On the other hand, in the case of the judgement in step S5 is "No", (request torque A is In the case of generating judges more than torque α), ECU20 is according to the SOC of battery 11 and electromotor Rotating speed calculates electric discharge and judges torque β (step S7).

Then, ECU20 calculates whether request torque A is that electric discharge judges below torque β (step Rapid S8).

In the case of the judgement of step S8 is "Yes", (request torque A judges to turn for electric discharge In the case of below square β), ECU20 is using as the electromotor operating point of target, (target is started Machine torque) it is set as the value equal with request torque A, it is 0 by target motor torque settings (step S9).That is, ECU20 makes electromotor 2 action at the operating point that the thermal efficiency is optimal, and Do not make motor 3 action, therefore, battery 11 will not overcharge, also will not overdischarge.Separately Outward, now, judge that torque α and electric discharge judge according to the generating of the SOC corresponding to battery 11 Torque β target setting motor torque, therefore, has substantially ensured that the SOC of battery 11.This Sample, the driving control system of present embodiment improves effect without compromising on fuel economy, and The SOC of battery can be managed rightly.Thereafter, ECU20 terminates the place of flow chart of Fig. 7 Reason.

On the other hand, in the case of the judgement in step S8 is "No", (torque A is big in request In the case of electric discharge judges torque β), ECU20 sets in step slo as target Electromotor operating point (target engine torque) and target motor torque.

Specifically, ECU20 is using as the electromotor operating point of target, (target engine turns Square) it is set as judging the equal value of torque β with electric discharge.

Here, the difference of target engine torque with request torque A is set as target motor Torque.Specifically, in the case of request torque A judges torque β more than electric discharge, i.e. When target engine torque is set to judge value equal for torque β with electric discharge, ask torque With the relation that target engine torque is A-β, this difference is set as target motor by ECU20 Torque, controls the action of motor 3.Now, judge to turn more than electric discharge due to request torque A Square β, therefore, ECU20 makes electromotor 2 send out with the target that the request torque A than driver is little Motivation torque β action, and the electromotor of deficiency turns compared to the request torque A of driver Square is made up by the work of motor 3.So, make due to the operating point optimal at the thermal efficiency Electromotor 2 action is therefore, it is possible to realize the raising of fuel economy and electronic owing to making Machine 3 action make up compared to driver request torque and the motor torque of deficiency, because of This can utilize energy efficiently.Further, since ECU20 calculates the electric discharge corresponding to SOC Judge torque β, and judge the relation of torque β and the request torque A of driver according to this electric discharge Target setting motor torque, therefore, improves effect, and energy without compromising on fuel economy Enough prevent the overcharge of battery 11.

Here, in the driving control system of present embodiment, target motor torque is for asking Ask the difference of torque A and target engine torque, therefore, the motor 3 when being run by power Torque be set to when B, the relation of target engine torque=A-B is set up.Therefore, exist In step S10, ECU20 by target motor torque settings be power run time motor 3 Torque i.e. on the occasion of B.So, motor 3 produces request torque A and target engine torque Difference power run torque, assisted engine 2.Thereafter, ECU20 terminates the flow process of Fig. 7 The process of figure.

Then, apply concrete numerical value so that the situation that SOC is 60%, 40%, 80% to be described Under electromotor operating point decision process result.Additionally, the 60% of SOC, 40%, 80% It is the intermediate value of range of management of SOC in present embodiment, lower limit, higher limit.

(SOC is the situation of 60%)

In the case of the 60% of the intermediate value that SOC is range of management, it is judged that torque map is such as Shown in Fig. 8, Fig. 9, Figure 10.At Fig. 8, Fig. 9, Tu10Zhong, engine speed is 4000rpm Time generating judge torque α and electric discharge judge that torque β is respectively 50N, 90N.

As shown in Figure 8, at the request torque A that engine speed is driver during 4000rpm In the case of being 30N, request torque A judges torque α less than generating, and therefore, ECU20 will Electromotor operating point is set as that generating judges torque α.Then, ECU20 is to judge with generating Target engine torque (50N) equal for torque α makes electromotor action.

It addition, ECU20 is using-the 20N as target engine torque with the difference of request torque A As target motor torque, make motor 3 action.That is, ECU20 utilizes beyond request The motor torque (20N) of torque part A makes motor 3 generate electricity.

As it is shown in figure 9, engine speed be request torque A during 4000rpm be 120N In the case of, request torque A judges torque β more than electric discharge, and therefore, ECU20 is by electromotor Operating point is set as that electric discharge judges torque β.Then, ECU20 is to judge torque β phase with electric discharge Deng target engine torque (90N) make electromotor action.

It addition, ECU20 is using the 30N as target engine torque with the difference of request torque A As target motor torque, make motor 3 action.That is, ECU20 utilizes motor 3 Power runs torque and makes up the torque of the part of deficiency compared to request torque A (30N)。

As shown in Figure 10, engine speed be request torque A during 4000rpm be 80N In the case of, request torque A for generating judge more than torque α and as discharge judge torque β with Under, therefore, request torque A is made electromotor 2 action as target engine torque by ECU20, And do not make motor 3 action.

So, under the either case of Fig. 8, Fig. 9, Figure 10, ECU20 is all so that starting Machine operating point (target engine torque) enters and is judged that torque α and electric discharge judge to turn by generating The mode in the region that square β clips sets electromotor operating point.Thus, without compromising on fuel Economy improves effect, and can carry out rightly discharging and charging.Additionally, above-mentioned is dynamic It is not only and performs when SOC is 60%, in the feelings that SOC is the scope being in 40% to 80% Also perform under condition.

(SOC is the situation of 40%)

In the case of the 40% of the lower limit that SOC is range of management, as shown in Fig. 4, Fig. 6, Electric discharge judges that torque β is unrelated with engine speed, and is set as the highest value 200N.

Thus, request torque A not more than electric discharge judges torque β, and therefore, ECU20 exists In the case of request torque A judges more than torque α for generating, torque A will be asked as target Motor torque makes electromotor 2 action, and does not make motor 3 action.

On the other hand, as shown in Fig. 3, Fig. 5, SOC is that generating when 40% judges torque α It is set as that generating when being 60% than SOC judges the big value of torque α.Therefore, electricity is distributed to The motor torque of the generating of motivation 3 becomes big and promotes generating.

So, when the lower limit that SOC is range of management of battery 11, if driver Request torque A judges more than torque α for generating, then ECU20 is with the request torque A of driver Make electromotor 2 action, and do not make motor 3 action.On the other hand, if driver's please Ask torque A to judge torque α less than generating, then target engine torque is set as and generating Judge the equal value of torque α, by the request torque A of this target engine torque Yu driver Difference utilize motor 3 to generate electricity as target motor torque.Thus, electricity is prevented The overdischarge in pond 11.

As it has been described above, in the case of SOC is 40%, ECU20 sets mesh in the following manner Mark motor torque and target motor torque: do not export power from motor 3 and run torque, And promote the generating of motor 3.Even if additionally, due to the electric loading etc. beyond motor 3 In the case of causing SOC to be less than 40%, ECU20 is controlled the most as described above.

(SOC is the situation of 80%)

In the case of the 80% of the higher limit that SOC is range of management, as shown in Fig. 3, Fig. 5, Generating judges that torque α is unrelated with engine speed, and is set as the least value 0N.

Thus, request torque A will not judge torque α less than generating, and therefore, ECU20 exists In the case of request torque A judges below torque β for electric discharge, torque A will be asked as target Motor torque makes electromotor 2 action, and does not make motor 3 action.

On the other hand, as shown in Fig. 4, Fig. 6, SOC is that electric discharge when 80% judges torque β It is set as that electric discharge when being 60% than SOC judges the little value of torque β, therefore, passes through motor The power of 3 runs, and is i.e. promoted the electric discharge of battery 11 by motor auxiliary.

So, when the higher limit that SOC is range of management of battery 11, if driver Request torque A judges below torque β for electric discharge, then ECU20 is with the request torque A of driver Make electromotor 2 action, and do not make motor 3 action.On the other hand, if driver's please Ask torque A to judge torque β more than electric discharge, then target engine torque is set as and electric discharge Judge the equal value of torque β, by the request torque A of this target engine torque Yu driver Difference as target motor torque, make motor 3 action discharge.Thus, anti- The only overcharge of battery 11.

As it has been described above, in the case of SOC is 80%, ECU20 sets mesh in the following manner Mark motor torque and target motor torque: do not make motor 3 generate electricity, and pass through The power of motor 3 runs the electric discharge promoting battery 11.Even if additionally, due to motor 3 In the case of electric loadings in addition etc. cause SOC to be more than 80%, ECU20 is the most as described above It is controlled.

The action effect of the driving control system of present embodiment described above is said Bright.

In the driving control system of present embodiment, it is judged that torque calculating section 23 is corresponding to electricity The SOC in pond 11 calculates according to sending out of making electromotor 2 when the operating point action that the thermal efficiency is optimal The judgement torque that motivation torque is obtained.Then, operation control part 24 is according to the request of driver Torque A with judge that the relation of torque obtains target engine torque and target motor torque, And make electromotor 2 action by this target engine torque, and electronic by this target Machine torque makes motor 3 action.

By such composition, previously according to making electromotor at the optimal action crawl of the thermal efficiency Motor torque (the optimal line of the thermal efficiency) when making be set in obtain target engine torque and (generating judges that torque α and electric discharge judge to turn in the judgement torque used during target motor torque Square β), and, calculate the judgement torque of SOC corresponding to battery 11.Utilize and so calculate The action judging direct torque electromotor and motor, therefore, without compromising on fuel economy Property improve effect, and the SOC of battery can be managed rightly.

It addition, in the driving control system of present embodiment, it is judged that torque calculating section 23 Generating when calculating generating corresponding to the SOC of battery 11 judges torque α.

Then, operation control part 24 judges the situation of torque α at request torque A less than generating Under, generating is judged, and torque α makes electromotor 2 action as target engine torque, by target Motor torque makes motor 3 action with the difference of request torque A as target motor torque.

By this composition, as shown in figure 11, torque α is judged at request torque A less than generating In the case of, generating is judged, and torque α makes electromotor 2 action as target engine torque.

I.e., as shown in figure 11, request torque A be in than generating judge torque α on the lower Operating point correcting area in the case of, correct as target electromotor operating point and by it It is promoted to generating and judges the torque line of torque α.Improve therefore, it is possible to realize fuel economy.

It addition, by target engine torque is electronic as target with the difference of request torque A Machine torque, makes motor 3 action to produce generating torque.Therefore, motor 3 send Battery 11 is charged by electric power, it is possible to prevent the overdischarge of battery 11.

It addition, generating judges that torque α corresponds to what the SOC of battery 11 calculated, therefore, Preventing of the fuel economy raising overdischarge with battery 11 can be taken into account.As a result of which it is, both It is capable of fuel economy and improves the SOC that can manage again battery.

It addition, in the driving control system of present embodiment, it is judged that torque calculating section 23 Electric discharge when calculating electric discharge corresponding to the SOC of battery 11 judges torque β.

Then, operation control part 24 judges the situation of torque β at request torque A more than electric discharge Under, electric discharge is judged, and torque β makes electromotor 2 action as target engine torque, by target Motor torque makes motor 3 action with the difference of request torque A as target motor torque.

By this composition, as shown in figure 11, torque β is judged at request torque A more than electric discharge In the case of, electric discharge is judged, and torque β makes electromotor 2 action as target engine torque.

I.e., as shown in figure 11, request torque A be in than electric discharge judge torque β by the top Operating point correcting area in the case of, correct as target electromotor operating point and by it It is reduced to electric discharge and judges the torque line of torque β.Improve therefore, it is possible to realize fuel economy.

It addition, by target engine torque is electronic as target with the difference of request torque A Machine torque, makes motor 3 action to produce generating torque.Therefore, moving by motor 3 Power is run and is made battery 11 discharge, it is possible to prevent the overcharge of battery 11.

It addition, electric discharge judges that torque β corresponds to what the SOC of battery 11 calculated, therefore, Preventing of the fuel economy raising overcharge with battery 11 can be taken into account.As a result of which it is, both It is capable of fuel economy and improves the SOC that can manage again battery 11.

In the driving control system of present embodiment, it is judged that torque calculating section 23 is corresponding to electricity Electric discharge when generating when the SOC in pond 11 calculates generating judges torque α and electric discharge judges torque β.

Then, operation control part 24 is that generating judges more than torque α and asks at request torque A In the case of asking torque A to judge below torque β for electric discharge, request torque A is sent out as target Motivation torque makes electromotor 2 action, and does not make motor 3 action.

By this composition, as shown in figure 11, request torque A for generating judge torque α with In the case of upper and request torque A judges below torque β for electric discharge, will request torque A conduct Target engine torque makes electromotor 2 action.

I.e., as shown in figure 11, request torque A be in than electric discharge judge torque β on the lower And than generating judge torque α region by the top in the case of, as target start motor-driven Make point and be set as equal with request torque A, and the motor torque of motor 3 is 0.Its Result is, can either realize fuel economy and improve the SOC that can manage again battery 11.

Although disclosing embodiments of the present invention, but it will be appreciated that can be without departing from The scope of the present invention is changed.Claim is intended to comprise all this corrections and equivalent.

Such as, the range of management of SOC is not limited to 40%～80%.It addition, judge that torque is reflected Penetrate, generating electricity judges that the value that torque map and electric discharge judge torque map is an example, these value meetings According to what kind of balance take into account fuel economy improve and the management of SOC and different.? In the case of fuel economy improves preferentially, torque α and electric discharge judge preferably to make generating judge The torque line of torque β is close to the optimal line of the thermal efficiency.It addition, each optimum mapped also can root It is to travel based on urban district and any in running at high speed according to contemplated driving mode And it is different.

Claims

1. a driving control system, controls the dynamic of electromotor according to target engine torque Make, according to the action of target motor direct torque motor, it is characterised in that have:

Accelerator operation amount test section, it detects accelerator operation amount；

Engine speed test section, it detects engine speed；

Request torque calculating section, it is according to above-mentioned accelerator operation amount and above-mentioned engine speed Calculate the request torque of driver；

Charge residue test section, the charge residue of its detection battery；

Judging torque calculating section, it calculates judgement turn corresponding to the charge residue of above-mentioned battery Square, above-mentioned judgement torque is according to making above-mentioned electromotor when the thermal efficiency optimal operating point action Motor torque obtain；And

Operation control part, it is obtained according to the relation of above-mentioned request torque with above-mentioned judgement torque Above-mentioned target engine torque and above-mentioned target motor torque, and started by this target The above-mentioned electromotor of machine direct torque, and above-mentioned electronic by this target motor direct torque The action of machine.

Driving control system the most according to claim 1, it is characterised in that

Above-mentioned judgement torque calculating section calculates generating corresponding to the charge residue of above-mentioned battery Time generating judge torque,

Above-mentioned operation control part judges the feelings of torque in above-mentioned request torque less than above-mentioned generating Under condition, above-mentioned generating is judged torque as target engine torque make above-mentioned start motor-driven Make, the difference of above-mentioned target engine torque with above-mentioned request torque is turned as target motor Square makes above-mentioned motor action.

3. according to the driving control system described in claim 1 or claim 2, its feature It is,

Above-mentioned judgement torque calculating section calculates electric discharge corresponding to the charge residue of above-mentioned battery Time electric discharge judge torque,

Above-mentioned operation control part judges the feelings of torque in above-mentioned request torque more than above-mentioned electric discharge Under condition, above-mentioned electric discharge is judged torque as target engine torque make above-mentioned start motor-driven Make, the difference of above-mentioned target engine torque with above-mentioned request torque is turned as target motor Square makes above-mentioned motor action.

4. according to the driving control system described in claim 1 or claim 2, its feature It is,

Above-mentioned judgement torque calculating section calculates generating corresponding to the charge residue of above-mentioned battery Time generating judge torque and electric discharge time electric discharge judge torque,

Above-mentioned operation control part above-mentioned request torque be above-mentioned generating judge more than torque and Above-mentioned request torque is, in the case of above-mentioned electric discharge judges below torque, to carry out in the following manner Control: using above-mentioned request torque as target engine torque, make above-mentioned electromotor action and Do not make above-mentioned motor action.

Driving control system the most according to claim 3, it is characterised in that