CN102963354B - The torque processing method of motor vehicle driven by mixed power - Google Patents
The torque processing method of motor vehicle driven by mixed power Download PDFInfo
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- CN102963354B CN102963354B CN201210488404.0A CN201210488404A CN102963354B CN 102963354 B CN102963354 B CN 102963354B CN 201210488404 A CN201210488404 A CN 201210488404A CN 102963354 B CN102963354 B CN 102963354B
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Abstract
The present invention relates to the torque processing method of a kind of motor vehicle driven by mixed power, comprising the following steps: entire car controller receives gas pedal amplitude, the current rotating speed of electromotor, vehicle current gear and current battery charge status signal by CAN network, entire car controller calculates according to current vehicle condition and obtains dynamical system demand torque value；Determine the electromotor torque capacity allowed under the current rotating speed of electromotor；Determine the motor maximum generation torque allowed under high tension battery current SOC state；Calculate the fuel efficiency for engine under the current tachometer value of electromotor and different motor torque；Determine the motor torque set point torque that Fuel Consumption that the current rotating speed of electromotor is corresponding is minimum；Electric power generation torque is determined according to the motor torque that the current power system requirements torque provided and fuel efficiency are the highest.The invention have the benefit that and obtain suitable motor torque and motor torque to improve fuel economy.
Description
Technical field
The present invention relates to the torque processing method of a kind of motor vehicle driven by mixed power.
Background technology
Under the overall background of energy crisis and ecological deterioration, motor vehicle driven by mixed power is devoted to reduce fuel consumption, reduces row
Put.Motor vehicle driven by mixed power uses electromotor and one or more motor to drive vehicle, therefore make vehicle fuel consumption and
Discharge is possibly realized less than traditional vehicle.For electromotor, different engine working points has different work efficiencies, and one
For as, the load of electromotor improves, and its work efficiency also can improve.For driver, no matter hybrid power or pass
System car, in driving procedure, the demand to power is consistent.It is to change change speed gear box that traditional vehicle changes the mode of engine load
Gear, but for the change speed gear box of fixed speed ratio, the change of gear can only change engine load, not in limited range
Optimum effect can be reached.Motor vehicle driven by mixed power, can be easily by increasing electric power generation torque owing to adding motor
Mode changes the load of electromotor, improves the service efficiency of electromotor.The electric energy that motor is sent simultaneously can store to battery,
Motor assist drives when, electric energy is discharged, thus reduce the purpose that fuel oil consumes.
Summary of the invention
It is an object of the invention to provide the torque processing method of a kind of motor vehicle driven by mixed power, obtain suitable motor torque
With motor torque to improve fuel economy, and overcome currently available technology above shortcomings.
It is an object of the invention to be achieved through the following technical solutions:
The torque processing method of a kind of motor vehicle driven by mixed power, comprises the following steps:
(1) entire car controller receives gas pedal amplitude, the current rotating speed of electromotor, vehicle current gear by CAN network
With the signal such as battery current power state, entire car controller calculates according to vehicle's current condition and obtains dynamical system demand torque
Value；
(2) entire car controller is tabled look-up and is determined the electromotor torque capacity allowed under the current rotating speed of electromotor, determines permission
Electromotor torque capacity is to look into electromotor torque capacity according to the current rotating speed of electromotor to table look-up with engine speed relationship table and obtain
's；
(3) entire car controller is tabled look-up and is determined the motor maximum generation torque allowed under high tension battery current power state,
Determine that the motor maximum generation torque of permission is to look into motor maximum generation torque according to the battery electric quantity preset to close with battery electric quantity
Being that table obtains, when battery electric quantity is higher, motor maximum generation torque is less, when battery electric quantity is relatively low, and motor maximum generation
Torque is bigger；
(4) the current tachometer value of entire car controller computation of table lookup electromotor and the engine fuel effect under different motor torques
Rate, chooses the alternative of motor torque according to certain torque interval within the scope of the alternative torque settings that electromotor allows and sets
Definite value, and look into engine efficiency table obtain fuel efficiency for engine according to engine speed and the alternative set point of motor torque；
The choosing of alternative torque settings point of electromotor is in alternative scope, chooses alternative set point with the interval of 0.5 N of rice；Start
The alternative torque settings lower range limit that machine allows is equal to electromotor current torque, and alternative torque settings range higher limit is equal to sending out
The maximum allowable torque of motivation and electromotor current torque and the smaller value in motor maximum generation torque sum；
(5) fuel efficiency for engine under the motor torque set point operating mode that entire car controller is more different,
Motor torque set point corresponding to high efficiency value process as optimization after motor torque set point, by relatively alternative
The engine efficiency value that motivation torque settings point is corresponding, chooses wherein engine efficiency peak, and its corresponding electromotor turns
Square set point is the motor torque set point torque that Fuel Consumption corresponding to present engine rotating speed is minimum；And
(6) entire car controller is according to the dynamical system current demand torque provided and the highest motor torque of fuel efficiency
Determine electric power generation torque, be set as according to the difference between electromotor current demand torque and the optimal engine torque provided
Electric power generation torque.
The invention have the benefit that the optimum motor torque of the present invention and motor torque are to be imitated by comparison engine
Rate determines；For electromotor, multiple operation torque under same rotating speed, can be set with, utilize the generating torque of motor to protect
The torque-demand of card dynamical system is responded accurately；As long as i.e. motor torque and electric power generation torque sum ensure to drive
Member's demand to output torque, can select the motor torque of fuel efficiency optimum and corresponding motor torque；Wherein, send out
Tabling look-up of motivation efficiency is carried out off-line manner.Obtain suitable motor torque and motor torque to improve fuel oil warp
Ji property.
Accompanying drawing explanation
Below according to accompanying drawing, the present invention is described in further detail.
Fig. 1 is the theory diagram of the torque processing method of the motor vehicle driven by mixed power described in the embodiment of the present invention.
Fig. 2 is the flow chart of the torque processing method of the motor vehicle driven by mixed power described in the embodiment of the present invention.
Detailed description of the invention
The torque processing method of a kind of motor vehicle driven by mixed power described in the embodiment of the present invention, wherein said motor vehicle driven by mixed power
Dynamical system include electromotor, motor and battery；Send out as it is shown in figure 1, be applied to battery SOC with maximum allowable (absolute value)
The maximum allowable generating torque of the motor on line is obtained on electricity torque relationship table.The current rotating speed of electromotor is applied to electromotor and turns
The maximum allowable torque of electromotor is obtained on speed and electromotor torque capacity relation table.The current rotating speed of electromotor, electromotor are current
Demand torque, motor maximum allowable generating torque and the maximum allowable torque of electromotor are applied to algoritic module (according to electromotor
Efficiency determines the electromotor and motor torque that Fuel Consumption is minimum) on, obtain Fuel Consumption by comparison engine efficiency
Minimum electromotor command torque and motor command torque.
As in figure 2 it is shown, the torque processing method of a kind of motor vehicle driven by mixed power described in the embodiment of the present invention includes following step
Rapid:
Entire car controller is looked into the acquisition of engine efficiency table according to the current rotating speed of electromotor and present engine demand torque and is sent out
The corresponding efficiency of motivation, then with amplitude D_tq(0.5 cattle rice) on the basis of a upper moment motor torque, (initial value is current
Engine demand torque) increase motor torque, calculate according to the motor torque after present engine demand torque and increase
Required electrical power generators torque；
Allow generating torque according to current demand torque and motor maximum (absolute value), calculate corresponding motor torque；Meter
By maximum allowable for electromotor torque after calculation, motor maximum allowable generating torque correspondence motor torque and increase D_tq(0.5
Cattle rice) after motor torque compare, and take minima, then taken minimum engine torque and electromotor worked as forward
Zoom table, obtains the engine efficiency of correspondence；
Then compare the efficiency (initial value is demand torque correspondence efficiency) in a upper moment and the newest efficiency, and take minimum
The motor torque of value correspondence and motor torque.Then judge gained increase D_tq(0.5 cattle rice) motor torque or calculating
Electric power generation torque the most exceeded respective threshold limit value, if it is judged that be no, then return to amplitude D_tq(0.5
Cattle rice) on the basis of a upper moment motor torque, increase motor torque, if it is judged that be yes, then output gained starts
Machine torque and motor torque terminate as command torque, calculating.
Due to the fact that the calculating cycle at each entire car controller, electromotor under all current to electromotor speed conditions
Torque with motor is optimized selection, calculates the fuel efficiency of electromotor in the interval optimized in real time, chooses fuel effect
Motor torque corresponding to rate peak, and utilize the generating function of motor to ensure that the torque-demand of automotive power obtains
Correct guarantee.So calculating of entire car controller each time, the fuel efficiency of electromotor is all carried out real-time by circulation
Optimize, on the one hand the fuel efficiency of electromotor obtained real-time optimization make each calculate moment all achieve electromotor
The optimization of fuel efficiency, makes the torque-demand of automotive power obtain continuous print simultaneously the most all the time and ensures, driver is not
Abnormal driving sensation can be realized.Suitably motor torque and motor torque can improve fuel economy, and optimum sends out
Motivation torque and motor torque are determined by comparison engine efficiency.In vehicle actual motion, corresponding to current rotating speed,
Driver has a torque-demand to automotive power, in the case of without motor torque, it is believed that the torque-demand to vehicle
It is the torque-demand to electromotor.For electromotor, multiple operation torque can be set with under same rotating speed, utilize motor
Generating torque can ensure that the torque-demand of dynamical system is responded accurately, motor torque and electric power generation torque sum
As long as ensureing driver's demand to output torque, the motor torque of fuel efficiency optimum and corresponding motor can be selected
Torque.Wherein, tabling look-up of engine efficiency is carried out off-line manner.
The present invention is not limited to above-mentioned preferred forms, and anyone can show that under the enlightenment of the present invention other are various
The product of form, no matter but in its shape or structure, make any change, every have same as the present application or akin skill
Art scheme, within all falling within protection scope of the present invention.
Claims (5)
1. the torque processing method of a motor vehicle driven by mixed power, it is characterised in that comprise the following steps:
(1) entire car controller receives gas pedal amplitude, the current rotating speed of electromotor, vehicle current gear and electricity by CAN network
Pond current power state signal, entire car controller calculates according to vehicle's current condition and obtains dynamical system demand torque value；
(2) entire car controller is tabled look-up and is determined the electromotor torque capacity allowed under the current rotating speed of electromotor；
(3) entire car controller is tabled look-up and is determined the motor maximum generation torque allowed under high tension battery current power state；
(4) the current tachometer value of entire car controller computation of table lookup electromotor and the fuel efficiency for engine under different motor torques；
Wherein, in step (4), choose according to certain torque interval within the scope of the alternative torque settings that electromotor allows
The alternative setting value of motor torque, and look into engine efficiency table obtain according to engine speed and the alternative set point of motor torque
To fuel efficiency for engine；
The choosing of alternative torque settings point of electromotor is in alternative scope, chooses alternative setting with the interval of 0.5 N of rice
Point；
The alternative torque settings lower range limit that electromotor allows is equal to electromotor current torque, alternative torque settings range limit
Value is equal to less with motor maximum generation torque sum of the maximum allowable torque of electromotor and electromotor current torque
Value；
(5) fuel efficiency for engine under the motor torque set point operating mode that entire car controller is more different, the most efficient
Motor torque set point corresponding to rate value process as optimization after motor torque set point；And
(6) entire car controller determines according to the motor torque that the dynamical system current demand torque provided and fuel efficiency are the highest
Electric power generation torque.
2. the torque processing method of the motor vehicle driven by mixed power as described in claim 1, it is characterised in that: in step (2), really
The fixed electromotor torque capacity allowed is to look into electromotor torque capacity and engine speed relationship table according to the current rotating speed of electromotor
Table look-up and obtain.
3. the torque processing method of the motor vehicle driven by mixed power as described in claim 1, it is characterised in that: in step (3), really
The fixed motor maximum generation torque allowed is to look into motor maximum generation torque and battery electric quantity relation according to the battery electric quantity preset
Table obtains, and when battery electric quantity is higher, motor maximum generation torque is less, and when battery electric quantity is relatively low, motor maximum generation turns
Square is bigger.
4. the torque processing method of the motor vehicle driven by mixed power as described in claim 1, it is characterised in that: in step (5), logical
Crossing the engine efficiency value that more alternative motor torque set point is corresponding, choose wherein engine efficiency peak, its institute is right
The motor torque set point answered is the motor torque set point that Fuel Consumption corresponding to present engine rotating speed is minimum.
5. the torque processing method of the motor vehicle driven by mixed power as described in claim 1, it is characterised in that: in step (6), root
It is set as electric power generation torque according to the difference between current demand torque and the optimal engine torque provided.
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| CN201210488404.0A CN102963354B (en) | 2012-11-26 | 2012-11-26 | The torque processing method of motor vehicle driven by mixed power |
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| CN201210488404.0A CN102963354B (en) | 2012-11-26 | 2012-11-26 | The torque processing method of motor vehicle driven by mixed power |
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| CN102963354A CN102963354A (en) | 2013-03-13 |
| CN102963354B true CN102963354B (en) | 2016-08-10 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105270381B (en) * | 2014-05-27 | 2018-02-02 | 深圳电擎科技有限公司 | The control method and device of hybrid vehicle |
| CN105620481B (en) * | 2014-10-27 | 2018-06-19 | 北京宝沃汽车有限公司 | The control method and system of vehicle |
| JP2017007457A (en) * | 2015-06-19 | 2017-01-12 | スズキ株式会社 | Hybrid vehicle |
| CN105059136B (en) * | 2015-09-18 | 2017-08-29 | 重庆长安汽车股份有限公司 | Processing method, device and the controller of vehicle control data |
| CN109703346B (en) * | 2017-10-25 | 2022-04-26 | 上海汽车集团股份有限公司 | Double-motor automobile power system and control method and device thereof |
| CN109141910B (en) * | 2018-05-23 | 2020-07-31 | 中国汽车技术研究中心有限公司 | Test condition conversion method from whole vehicle to engine |
| CN108790774A (en) * | 2018-07-12 | 2018-11-13 | 杭州休伦科技有限公司 | Multimode hybrid power system based on single planetary row and its control method |
| CN109353326B (en) * | 2018-09-28 | 2020-07-28 | 潍柴动力股份有限公司 | Engine torque control method and device |
| CN110239512B (en) * | 2019-05-10 | 2021-01-05 | 浙江吉利控股集团有限公司 | Energy management method and system for hybrid vehicle |
| CN110056436B (en) * | 2019-06-24 | 2019-09-13 | 潍柴动力股份有限公司 | A kind of hybrid power system engine runaway control method and device |
Citations (1)
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| CN102652087A (en) * | 2009-12-16 | 2012-08-29 | 本田技研工业株式会社 | Hybrid vehicle and control method thereof |
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| US7398147B2 (en) * | 2005-08-02 | 2008-07-08 | Ford Global Technologies, Llc | Optimal engine operating power management strategy for a hybrid electric vehicle powertrain |
| JP5071358B2 (en) * | 2008-12-03 | 2012-11-14 | トヨタ自動車株式会社 | POWER OUTPUT DEVICE, VEHICLE HAVING THE SAME, AND METHOD FOR CONTROLLING POWER OUTPUT DEVICE |
| JP5530813B2 (en) * | 2010-06-04 | 2014-06-25 | トヨタ自動車株式会社 | Hybrid vehicle and control method thereof |
| GB201014680D0 (en) * | 2010-09-04 | 2010-10-20 | Jaguar Cars | Controller and method of control of a hybrid electric vehicle |
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| CN102652087A (en) * | 2009-12-16 | 2012-08-29 | 本田技研工业株式会社 | Hybrid vehicle and control method thereof |
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