CN106828484B - A kind of engine accessory power rating torque acquisition methods and device - Google Patents
A kind of engine accessory power rating torque acquisition methods and device Download PDFInfo
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- CN106828484B CN106828484B CN201710066187.9A CN201710066187A CN106828484B CN 106828484 B CN106828484 B CN 106828484B CN 201710066187 A CN201710066187 A CN 201710066187A CN 106828484 B CN106828484 B CN 106828484B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0666—Engine torque
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Abstract
A kind of engine accessory power rating torque acquisition methods and device provided by the invention, by accurately obtaining generator demand torque, electrical control electric fan demand torque, air pressure pump demand torque, steering pump demand torque and compressor of air conditioner demand torque, to the generator demand torque, the electrical control electric fan demand torque, the air pressure pump demand torque, the steering pump demand torque and the compressor of air conditioner demand torque carry out summation operation, obtain the demand torque of accurate engine accessory power rating, and then improve the precision of engine internal torque, and then improve the torque control precision of engine.
Description
Technical field
The present invention relates to engine design field, in particular to a kind of engine accessory power rating torque acquisition methods and device.
Background technique
Since plug-in hybrid vehicle is compared to pure electric vehicle, engine continuous longevity of service can be played,
The advantages of good dynamic property, and can play that motor is pollution-free, benefit of low noise, therefore plug-in hybrid vehicle is in market
On be used widely.
The engine control mode of plug-in hybrid vehicle is moment of torsion control, therefore to the moment of torsion control of engine essence
It spends more demanding.And the torque control precision of engine is improved by improving the precision of engine internal torque at present.Wherein, it sends out
Motivation internal torque is that engine output end torque, engine friction torque and engine carry the sum of accessory torque three.But
The accurate calibration to engine output end torque and engine friction torque is had been realized at present, and is not yet realized to engine
The calibration of included accessory torque, therefore how to obtain engine and carry accessory torque as problem.
Summary of the invention
In view of this, the present invention proposes a kind of engine accessory power rating torque acquisition methods and device, to reach raising engine
Torque control precision purpose.
To achieve the goals above, it is proposed that scheme it is as follows:
A kind of engine accessory power rating torque acquisition methods, comprising:
Obtain generator demand torque；
Obtain electrical control electric fan demand torque；
Obtain air pressure pump demand torque；
Obtain steering pump demand torque；
Obtain compressor of air conditioner demand torque；
To the generator demand torque, the electrical control electric fan demand torque, the air pressure pump demand torque, the steering
Demand pump torque and the compressor of air conditioner demand torque carry out summation operation, obtain the demand torque of engine accessory power rating.
Preferably, the acquisition generator demand torque, comprising:
It is mended using actual torque × temperature compensation coefficient × time after relational expression generator demand torque=generator filtering
Coefficient is repaid, the generator demand torque is calculated；
Actual torque is the torque obtained after being filtered to generator actual torque, the hair after the generator filtering
Motor actual torque is obtained by engine speed and the determination of generator load rate, and the temperature compensation coefficient passes through to engine
Temperature is demarcated to obtain, and the time compensation factor is the time demarcated determined according to runing time after engine start
Constant value.
Preferably, the acquisition electrical control electric fan demand torque, comprising:
According to engine speed and electrical control electric fan operating condition, the electrical control electric fan demand torque is determined, wherein when described
When engine speed increases, the electrical control electric fan demand torque increases, when the electrical control electric fan operating condition becomes larger, the electricity
Fan demand torque is controlled to increase.
Preferably, when the electrical control electric fan is electromagnetic clutch fan, the acquisition of the electrical control electric fan operating condition
Journey are as follows:
According to the setting speed of engine speed and the electromagnetic clutch fan, the electromagnetic clutch fan is determined
Electromagnetism valve opening；
The electrical control electric fan operating condition is determined according to the electromagnetism valve opening of the electromagnetic clutch fan；
Wherein, the electrical control electric fan operating condition is determined according to the electromagnetism valve opening of the electromagnetic clutch fan, comprising:
When the electromagnetism valve opening of the electromagnetic clutch fan is increase tendency and is greater than solenoid valve when middling speed operating is opened
When aperture setting value, determine that the electrical control electric fan operating condition is middling speed operating condition；
When the electromagnetism valve opening of the electromagnetic clutch fan is reduction trend and is less than solenoid valve when middling speed operating is closed
When aperture setting value, determine that the electrical control electric fan operating condition is low-speed running state；
When the electromagnetism valve opening of the electromagnetic clutch fan is increase tendency and is greater than solenoid valve when full-speed operation is opened
When aperture setting value, determine that the electrical control electric fan operating condition is full-speed operation state；
When the electromagnetism valve opening of the electromagnetic clutch fan is reduction trend and is less than solenoid valve when full-speed operation is closed
When aperture setting value, determine that the electrical control electric fan operating condition is middling speed operating condition.
Preferably, the acquisition air pressure pump demand torque, comprising:
Torque needed for inquiry air pressure pump corresponding with engine speed in the torque mapping table needed for default air pressure pump,
Torque needed for the air pressure pump inquired is the air pressure pump demand torque.
Preferably, the acquisition steering pump demand torque, comprising:
The steering pump demand torque is determined according to engine speed, and the steering pump demand torque determined is that can mark
Fixed constant value guarantees vehicle normal turn institute when vehicle turn radius is big when the constant value demarcated is engine idling
The torque value needed.
Preferably, the acquisition compressor of air conditioner demand torque, comprising:
The compressor of air conditioner demand torque is determined according to engine speed, and when the engine speed increases, institute
State the increase of compressor of air conditioner demand torque.
A kind of engine accessory power rating torque acquisition means, comprising:
First obtains module, for obtaining generator demand torque；
Second obtains module, for obtaining electrical control electric fan demand torque；
Third obtains module, for obtaining air pressure pump demand torque；
4th obtains module, for obtaining steering pump demand torque；
5th obtains module, for obtaining compressor of air conditioner demand torque；
Computing module, for the generator demand torque, the fan electrical control electric fan demand torque, the air pressure pump
Demand torque, the steering pump demand torque and the compressor of air conditioner demand torque carry out summation operation, and it is attached to obtain engine
The demand torque of part.
Preferably, the first acquisition module includes:
Computing unit, for utilizing actual torque × temperature-compensating after relational expression generator demand torque=generator filtering
Coefficient × time compensation factor calculates the generator demand torque；
Actual torque is the torque obtained after being filtered to generator actual torque, the hair after the generator filtering
Motor actual torque is obtained by engine speed and the determination of generator load rate, and the temperature compensation coefficient passes through to engine
Temperature is demarcated to obtain, and the time compensation factor is the time demarcated determined according to runing time after engine start
Constant value.
Preferably, the second acquisition module includes:
First determination unit, for determining that the electrical control electric fan is needed according to engine speed and electrical control electric fan operating condition
Seek torque, wherein when the engine speed increases, the electrical control electric fan demand torque increases, when the electrical control electric fan is transported
When turning state and becoming larger, the electrical control electric fan demand torque increases.
Preferably, when the electrical control electric fan is electromagnetic clutch fan, the engine accessory power rating torque acquisition means are also
Include:
6th obtains module, for obtaining the electrical control electric fan operating condition；
The 6th acquisition module includes: the second determination unit, for according to engine speed and the electromagnetic clutch
The setting speed of fan determines the electromagnetism valve opening of the electromagnetic clutch fan；
Third determination unit, for determining that the electrical control electric fan is transported according to the electromagnetism valve opening of the electromagnetic clutch fan
Turn state；
Wherein, the third determination unit includes:
First determines subelement, is increase tendency for the electromagnetism valve opening when the electromagnetic clutch fan and is greater than
When speed operating is opened when electromagnetism valve opening setting value, determine that the electrical control electric fan operating condition is middling speed operating condition；
Second determines subelement, is reduction trend for the electromagnetism valve opening when the electromagnetic clutch fan and is less than
When speed operating is closed when electromagnetism valve opening setting value, determine that the electrical control electric fan operating condition is low-speed running state；
Third determines subelement, is increase tendency for the electromagnetism valve opening when the electromagnetic clutch fan and is greater than complete
When speed operating is opened when electromagnetism valve opening setting value, determine that the electrical control electric fan operating condition is full-speed operation state；
4th determines subelement, is reduction trend for the electromagnetism valve opening when the electromagnetic clutch fan and is less than complete
When speed operating is closed when electromagnetism valve opening setting value, determine that the electrical control electric fan operating condition is middling speed operating condition.
Preferably, the third acquisition module includes:
Query unit, for inquiry sky corresponding with engine speed in the torque mapping table needed for default air pressure pump
Torque needed for press pump, torque needed for the air pressure pump inquired are the air pressure pump demand torque.
Preferably, the 4th acquisition module includes:
4th determination unit, for determining the steering pump demand torque, and described turn determined according to engine speed
It is the constant value that can be demarcated to demand pump torque, when vehicle turn radius is big when the constant value demarcated is engine idling
Torque value needed for guaranteeing vehicle normal turn.
Preferably, the 5th acquisition module includes:
5th determination unit for determining the compressor of air conditioner demand torque according to engine speed, and works as the hair
When motivation revolving speed increases, the compressor of air conditioner demand torque increases.
Compared with prior art, technical solution of the present invention has the advantage that
A kind of engine accessory power rating torque acquisition methods and device that above-mentioned technical proposal provides, by accurately obtaining generator
Demand torque, electrical control electric fan demand torque, air pressure pump demand torque, steering pump demand torque and compressor of air conditioner demand torque,
The generator demand torque, the electrical control electric fan demand torque, the air pressure pump demand torque, the steering demand pump are turned round
Square and the compressor of air conditioner demand torque carry out summation operation, obtain the demand torque of accurate engine accessory power rating, Jin Erti
The precision of high engine internal torque, and then improve the torque control precision of engine.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of flow chart of engine accessory power rating torque acquisition methods provided by the present application；
Fig. 2 is the acquisition structural schematic diagram of generator demand torque provided by the present application；
Fig. 3 is a kind of structural schematic diagram of engine accessory power rating torque acquisition means provided by the present application.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the present embodiment, engine accessory power rating specifically includes generator, electrical control electric fan, air pressure pump, steering pump and air-conditioning pressure
Contracting machine.Obtaining engine accessory power rating torque is the torque for obtaining generator, electrical control electric fan, air pressure pump, steering pump and compressor of air conditioner.
Referring to Fig.1, may include following step it illustrates a kind of flow chart of engine accessory power rating torque acquisition methods provided by the invention
It is rapid:
Step S11: generator demand torque is obtained.
Step S12: electrical control electric fan demand torque is obtained.
Step S13: air pressure pump demand torque is obtained.
Step S14: steering pump demand torque is obtained.
Step S15: compressor of air conditioner demand torque is obtained.
Step S16: to the generator demand torque, the electrical control electric fan demand torque, the air pressure pump demand torque,
The steering pump demand torque and the compressor of air conditioner demand torque carry out summation operation, and the demand for obtaining engine accessory power rating is turned round
Square.
In the present embodiment, it is turned round by accurately obtaining generator demand torque, electrical control electric fan demand torque, pneumatics demand pump
Square, steering pump demand torque and compressor of air conditioner demand torque turn round the generator demand torque, the electrical control electric fan demand
Square, the air pressure pump demand torque, the steering pump demand torque and the compressor of air conditioner demand torque carry out summation operation,
The demand torque of accurate engine accessory power rating is obtained, and then improves the precision of engine internal torque, and then improves the torsion of engine
Square controls precision.
In the present embodiment, the detailed process for obtaining generator demand torque can be with are as follows:
It is mended using actual torque × temperature compensation coefficient × time after relational expression generator demand torque=generator filtering
Coefficient is repaid, the generator demand torque is calculated.
Actual torque is the torque obtained after being filtered to generator actual torque, the hair after the generator filtering
Motor actual torque determined and obtain by engine speed and generator load rate (Wherein, T indicates that generator is real
Border torque, P indicate generator load rate, n indicate engine speed), the temperature compensation coefficient by engine temperature into
Rower obtains surely, and the time compensation factor is the time constant demarcated determined according to runing time after engine start
Value.
The generator actual torque determines that obtained detailed process can be with by engine speed and generator load rate
Are as follows: according to formula using engine speed as x-axis, using generator load rate as y-axis, to determine the curve of z-axis, determining z-axis
Curve, that is, generator actual torque curve.
The acquisition process of engine speed are as follows: since generator speed and engine speed are corresponding relationships, engine turns
Speed/generator speed=generator pulley diameters/engine crankshaft pulley diameters, i.e. generator speed=generator belt wheel are straight
Diameter/engine crankshaft pulley diameters * generator speed.Generator speed can directly be read from plug-in hybrid vehicle
It takes.
The process being filtered to generator actual torque is specifically as follows: can pass through Filtering Formula yn+1=K*dt/T*u+
yn(1-dt/T) is calculated, wherein K be proportionality coefficient (being defaulted as 1), dt be the sampling period (such as: 100ms), T is the time
Constant (such as: 500ms), u is initial input value, ynFor actual torque after the filtering of current time generator, (initial value is defaulted as
0), yn+1For actual torque after the filtering of later moment in time generator.
In the present embodiment, temperature compensation coefficient and engine temperature are piecewise linear relationships, with engine temperature liter
Height, temperature compensation coefficient is bigger, and the occurrence of temperature compensation coefficient can be obtained by calibration.
The time compensation factor is the time constant value demarcated determined according to runing time after engine start.When
Between the specific setting of penalty coefficient can be with are as follows: in order to compensate for the storage battery energy of starting engine consumption, engine start at
Time compensation factor is larger (example: 1, can demarcate) in 60s after function, with engine stabilizer 300s post-compensation coefficient be constant value (example:
0.6, can demarcate), 0.6 gradually is reduced to by 0.9 between 60s and 300s for linear relationship.
Fig. 2 is referred to, the acquisition structural schematic diagram of generator demand torque is shown.It is negative by engine speed and generator
Lotus rate determines generator actual torque, is filtered to generator actual torque, obtains actual torque after generator filtering；According to
Engine temperature temperature penalty coefficient；Time compensation factor is determined according to runing time after engine start；To generator
Actual torque, temperature compensation coefficient and time compensation factor carry out multiplication operation after filtering, obtain generator demand torque.
In the present embodiment, the detailed process of electrical control electric fan demand torque is obtained are as follows: according to engine speed and automatically controlled wind
Operating condition is fanned, determines the electrical control electric fan demand torque, wherein when the engine speed increases, the electrical control electric fan
Demand torque increases, and when the electrical control electric fan operating condition becomes larger, the electrical control electric fan demand torque increases.
According to engine speed and electrical control electric fan operating condition, determine that the detailed process of the electrical control electric fan demand torque can
With are as follows: using engine speed as x-axis, using electrical control electric fan operating condition as y-axis, determine the curve of z-axis, the curve of determining z-axis
That is the curve of electrical control electric fan demand torque.
Wherein, when the electrical control electric fan is electromagnetic clutch fan, the acquisition process of the electrical control electric fan operating condition
Are as follows:
Step A11: according to the setting speed of engine speed and the electromagnetic clutch fan, the electromagnetic clutch is determined
The electromagnetism valve opening of device fan.
The setting speed of electromagnetic clutch fan increases as engine temperature increases, and the two is piecewise linear relationship.
According to the available required electromagnetism valve opening (z of the setting speed (y-axis) of engine speed (x-axis) and electromagnetic clutch fan
Axis).When engine speed is higher, the electromagnetism valve opening of electromagnetic clutch fan is bigger, when the setting of electromagnetic clutch fan
When revolving speed is higher, the electromagnetism valve opening of electromagnetic clutch fan is also bigger.
Step A12: the electrical control electric fan operating condition is determined according to the electromagnetism valve opening of the electromagnetic clutch fan.
Wherein, the electrical control electric fan operating condition is determined according to the electromagnetism valve opening of the electromagnetic clutch fan, comprising:
When the electromagnetism valve opening of the electromagnetic clutch fan is increase tendency and is greater than solenoid valve when middling speed operating is opened
When aperture setting value (electromagnetism valve opening setting value=50% when e.g., middling speed operating is opened), the electrical control electric fan operating shape is determined
State is middling speed operating condition；
When the electromagnetism valve opening of the electromagnetic clutch fan is reduction trend and is less than solenoid valve when middling speed operating is closed
When aperture setting value (electromagnetism valve opening setting value=40% when e.g., middling speed operating is closed), the electrical control electric fan operating shape is determined
State is low-speed running state；
When the electromagnetism valve opening of the electromagnetic clutch fan is increase tendency and is greater than solenoid valve when full-speed operation is opened
When aperture setting value (electromagnetism valve opening setting value=80% when e.g., full-speed operation is opened), the electrical control electric fan operating shape is determined
State is full-speed operation state；
When the electromagnetism valve opening of the electromagnetic clutch fan is reduction trend and is less than solenoid valve when full-speed operation is closed
When aperture setting value (electromagnetism valve opening setting value=60% when e.g., full-speed operation is closed), the electrical control electric fan operating shape is determined
State is middling speed operating condition.
In the present embodiment, the detailed process for obtaining air pressure pump demand torque can be with are as follows: the torque needed for default air pressure pump
Torque needed for inquiring corresponding with engine speed air pressure pump in mapping table, torque needed for the air pressure pump inquired is described
Air pressure pump demand torque.
Wherein, torque mapping table needed for presetting air pressure pump is that the corresponding of torque needed for engine speed and air pressure pump is closed
The table of system.
Torque mapping table needed for default air pressure pump is only the corresponding relationship of torque needed for engine speed and air pressure pump
Table the reason of be: air pressure pump is that engine by gear drives its work, when gas storage bottle pressure increase tendency and greater than unloading
Unloading valve is opened when lotus valve opens storage cylinder setup pressure value, and air enters atmosphere from unloading port, and engine also drives sky at this time
Press rotates but air pressure pump does not need torque, and when opening storage cylinder setup pressure value lower than unloading valve, unloading valve is closed, pneumatics
Pump restarts compressed air and enters storage cylinder, and air pressure pump needs torque at this time.But since there are check valve, gas storage bottle pressure increases
Big required pneumatics pump power can't increase, therefore torque needed for air pressure pump and gas storage bottle pressure are unrelated, and needed for air pressure pump
Torque it is related with the revolving speed of engine, with engine speed increase and increase.
In the present embodiment, steering pump is used to turn to and improving power, after engine start, in order to guarantee that vehicle safety is kept away
Exempt from steering power interruption, engine steering pump is needed to work always, is run in hybrid vehicle from pure electric vehicle switching engine
Mode rear steering pump just works immediately.By gear band turn to pump work when engine operates, therefore obtains and turn to demand pump
The process of torque are as follows: the steering pump demand torque, and the steering pump demand torque determined are determined according to engine speed
For the constant value that can be demarcated, guarantee that vehicle is normal when vehicle turn radius is big when the constant value demarcated is engine idling
Torque value needed for turning.The reason of determining steering pump demand torque is the constant value that can be demarcated is: with starting
The raising of machine revolving speed, steering pump demand torque reduce, but since steering pump demand torque is smaller, steering pump demand torque can be normal
Value.
Obtain the process of compressor of air conditioner demand torque are as follows: determine that the compressor of air conditioner demand is turned round according to engine speed
Square, and when the engine speed increases, the compressor of air conditioner demand torque increases.
The compressor of air conditioner demand torque is determined according to engine speed, and when the engine speed increases, institute
The reason of compressor of air conditioner demand torque increases is stated to be:
Compressor of air conditioner is that engine by belt drives its work, and compressor turns with engine after engine start
It is dynamic.When air-conditioning switch is opened and detects that environment inside car temperature is higher than the air-conditioning work environment inside car temperature (example: Env_ of setting
TONAC_C is 26 DEG C, can be demarcated), air-conditioner controller controls its electric control clutch closure, and compressor is with engine rotation, with fixed
For capacity compressors (capacity is improved with the raising of the revolving speed of engine, it cannot according to the demand of refrigeration and
Both it is automatic to change power output) it is illustrated, the demand torque of compressor of air conditioner increases with the increase of engine speed
It is unrelated for CUR relationship and environment inside car temperature, air-conditioning closing temperature is set when detecting that air-conditioning switch closing or vehicle interior temperature are lower than
Degree (example: EnV_tACOFF_C is 22 DEG C, can be demarcated), air-conditioner controller controls it and controls clutch disconnection, compressor and engine
It disengages, air conditioner compressed no longer with engine rotation, compressor of air conditioner no longer needs torque (example: AC_trqOFFSet_C is at this time
0N.m can be demarcated).
Since the engine control mode of plug-in hybrid vehicle is moment of torsion control, engine torque is controlled
Required precision is higher, if do not considered engine accessory power rating torque or considering that inaccuracy will will lead to engine demand internal torque and be not allowed
Really, cause distributive value inaccurate, and then influence engine power performance.Can realize through the invention to engine accessory power rating (generator,
Electrical control electric fan, air pressure pump, steering pump, compressor of air conditioner) torque acquisition, it does not need to increase torque sensor and engine friction
Torque, engine output end torque are added to obtain accurate engine internal torque, and then realize the accurate control of engine torque,
Driver intention can be accurately reflected, uses engine torque present invention can apply to different structure (series, parallel, mixed connection)
The plug-in hybrid vehicle of control.
For the various method embodiments described above, for simple description, therefore, it is stated as a series of action combinations, but
Be those skilled in the art should understand that, the present invention is not limited by the sequence of acts described because according to the present invention, certain
A little steps can be performed in other orders or simultaneously.
Following is apparatus of the present invention embodiment, can be used for executing embodiment of the present invention method.For apparatus of the present invention reality
Undisclosed details in example is applied, embodiment of the present invention method is please referred to.
A kind of engine accessory power rating torque acquisition means are present embodiments provided, Fig. 3 is referred to, engine accessory power rating torque obtains
Device includes: that the first acquisition module 31, second obtains module 32, third obtains module the 33, the 4th and obtains the acquisition of module the 34, the 5th
Module 35 and computing module 36.
First obtains module 31, for obtaining generator demand torque.
Second obtains module 32, for obtaining electrical control electric fan demand torque.
Third obtains module 33, for obtaining air pressure pump demand torque.
4th obtains module 34, for obtaining steering pump demand torque.
5th obtains module 35, for obtaining compressor of air conditioner demand torque.
Computing module 36, for the generator demand torque, the fan electrical control electric fan demand torque, the pneumatics
Demand pump torque, the steering pump demand torque and the compressor of air conditioner demand torque carry out summation operation, obtain engine
The demand torque of attachment.
In the present embodiment, the first acquisition module 31 can specifically include: computing unit, for utilizing relational expression generator
Actual torque × temperature compensation coefficient × time compensation factor after demand torque=generator filtering, calculates the generator demand
Torque；
Actual torque is the torque obtained after being filtered to generator actual torque, the hair after the generator filtering
Motor actual torque is obtained by engine speed and the determination of generator load rate, and the temperature compensation coefficient passes through to engine
Temperature is demarcated to obtain, and the time compensation factor is the time demarcated determined according to runing time after engine start
Constant value.
In the present embodiment, the second acquisition module 32 can specifically include: the first determination unit, for being turned according to engine
Speed and electrical control electric fan operating condition, determine the electrical control electric fan demand torque, wherein when the engine speed increases, institute
The increase of electrical control electric fan demand torque is stated, when the electrical control electric fan operating condition becomes larger, the electrical control electric fan demand torque increases.
When the electrical control electric fan is electromagnetic clutch fan, the engine accessory power rating torque acquisition means further include: the
Six obtain module, for obtaining the electrical control electric fan operating condition.
6th acquisition module can specifically include: the second determination unit and third determination unit.
Second determination unit determines institute for the setting speed according to engine speed and the electromagnetic clutch fan
State the electromagnetism valve opening of electromagnetic clutch fan；
Third determination unit, for determining that the electrical control electric fan is transported according to the electromagnetism valve opening of the electromagnetic clutch fan
Turn state.
Third determination unit includes: first to determine that subelement, second determine that subelement, third determine subelement and the 4th really
Stator unit.
First determines subelement, is increase tendency for the electromagnetism valve opening when the electromagnetic clutch fan and is greater than
When speed operating is opened when electromagnetism valve opening setting value, determine that the electrical control electric fan operating condition is middling speed operating condition；
Second determines subelement, is reduction trend for the electromagnetism valve opening when the electromagnetic clutch fan and is less than
When speed operating is closed when electromagnetism valve opening setting value, determine that the electrical control electric fan operating condition is low-speed running state；
Third determines subelement, is increase tendency for the electromagnetism valve opening when the electromagnetic clutch fan and is greater than complete
When speed operating is opened when electromagnetism valve opening setting value, determine that the electrical control electric fan operating condition is full-speed operation state；
4th determines subelement, is reduction trend for the electromagnetism valve opening when the electromagnetic clutch fan and is less than complete
When speed operating is closed when electromagnetism valve opening setting value, determine that the electrical control electric fan operating condition is middling speed operating condition.
In the present embodiment, third obtains module 33 and can specifically include: query unit, for needed for default air pressure pump
Torque needed for inquiring corresponding with engine speed air pressure pump in torque mapping table, torque needed for the air pressure pump inquired are
The air pressure pump demand torque.
In the present embodiment, the 4th acquisition module 34 can specifically include: the 4th determination unit, for being turned according to engine
Speed determines the steering pump demand torque, and the steering pump demand torque determined is the constant value that can be demarcated, described to mark
Torque value needed for guaranteeing vehicle normal turn when vehicle turn radius is big when fixed constant value is engine idling.
In the present embodiment, the 5th acquisition module 35 can specifically include: the 5th determination unit, for being turned according to engine
Speed determines the compressor of air conditioner demand torque, and when the engine speed increases, the compressor of air conditioner demand torque
Increase
The apparatus embodiments described above are merely exemplary, wherein described, unit can as illustrated by the separation member
It is physically separated with being or may not be, component shown as a unit may or may not be physics list
Member, it can it is in one place, or may be distributed over multiple network units.It can be selected according to the actual needs
In some or all of the modules achieve the purpose of the solution of this embodiment.Those of ordinary skill in the art are not paying creativeness
In the case where labour, it can understand and implement.
Herein, relational terms such as first and second and the like be used merely to by an entity or operation with it is another
One entity or operation distinguish, and without necessarily requiring or implying between these entities or operation, there are any this reality
Relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to the packet of nonexcludability
Contain, so that the process, method, article or equipment for including a series of elements not only includes those elements, but also including
Other elements that are not explicitly listed, or further include for elements inherent to such a process, method, article, or device.
In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including the element
Process, method, article or equipment in there is also other identical elements.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
To the above description of disclosed embodiment of this invention, it can be realized professional and technical personnel in the field or use this
Invention.Various modifications to these embodiments will be readily apparent to those skilled in the art, institute herein
The General Principle of definition can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore,
The present invention will not be limited to the embodiments shown herein, and is to fit to special with principles disclosed herein and novelty
The consistent widest scope of point.
Claims (12)
1. a kind of engine accessory power rating torque acquisition methods characterized by comprising
Obtain generator demand torque；
Obtain electrical control electric fan demand torque；
Obtain air pressure pump demand torque；
Obtain steering pump demand torque；
Obtain compressor of air conditioner demand torque；
The generator demand torque, the electrical control electric fan demand torque, the air pressure pump demand torque, the steering pump are needed
It asks torque and the compressor of air conditioner demand torque to carry out summation operation, obtains the demand torque of engine accessory power rating；
The acquisition generator demand torque, comprising:
Utilize actual torque × temperature compensation coefficient × time bias system after relational expression generator demand torque=generator filtering
Number, calculates the generator demand torque；
Actual torque is the torque obtained after being filtered to generator actual torque, the generator after the generator filtering
Actual torque is obtained by engine speed and the determination of generator load rate, and the temperature compensation coefficient passes through to engine temperature
It is demarcated to obtain, the time compensation factor is the time constant demarcated determined according to runing time after engine start
Value.
2. the method according to claim 1, wherein the acquisition electrical control electric fan demand torque, comprising:
According to engine speed and electrical control electric fan operating condition, the electrical control electric fan demand torque is determined, wherein start when described
When machine revolving speed increases, the electrical control electric fan demand torque increases, when the electrical control electric fan operating condition becomes larger, the automatically controlled wind
Demand torque is fanned to increase.
3. according to the method described in claim 2, it is characterized in that, when the electrical control electric fan be electromagnetic clutch fan when, institute
State the acquisition process of electrical control electric fan operating condition are as follows:
According to the setting speed of engine speed and the electromagnetic clutch fan, the electromagnetism of the electromagnetic clutch fan is determined
Valve opening；
The electrical control electric fan operating condition is determined according to the electromagnetism valve opening of the electromagnetic clutch fan；
Wherein, the electrical control electric fan operating condition is determined according to the electromagnetism valve opening of the electromagnetic clutch fan, comprising:
When the electromagnetism valve opening of the electromagnetic clutch fan is increase tendency and is greater than electromagnetism valve opening when middling speed operating is opened
When setting value, determine that the electrical control electric fan operating condition is middling speed operating condition；
When the electromagnetism valve opening of the electromagnetic clutch fan is reduction trend and is less than electromagnetism valve opening when middling speed operating is closed
When setting value, determine that the electrical control electric fan operating condition is low-speed running state；
When the electromagnetism valve opening of the electromagnetic clutch fan is increase tendency and is greater than electromagnetism valve opening when full-speed operation is opened
When setting value, determine that the electrical control electric fan operating condition is full-speed operation state；
When the electromagnetism valve opening of the electromagnetic clutch fan is reduction trend and is less than electromagnetism valve opening when full-speed operation is closed
When setting value, determine that the electrical control electric fan operating condition is middling speed operating condition.
4. the method according to claim 1, wherein the acquisition air pressure pump demand torque, comprising:
Torque needed for inquiry air pressure pump corresponding with engine speed, inquiry in the torque mapping table needed for default air pressure pump
Torque needed for the air pressure pump arrived is the air pressure pump demand torque.
5. the method according to claim 1, wherein the acquisition steering pump demand torque, comprising:
The steering pump demand torque is determined according to engine speed, and the steering pump demand torque determined can be demarcated
Constant value guarantees needed for vehicle normal turn when vehicle turn radius is big when the constant value demarcated is engine idling
Torque value.
6. the method according to claim 1, wherein the acquisition compressor of air conditioner demand torque, comprising:
The compressor of air conditioner demand torque is determined according to engine speed, and when the engine speed increases, the sky
Compressor demand torque is adjusted to increase.
7. a kind of engine accessory power rating torque acquisition means characterized by comprising
First obtains module, for obtaining generator demand torque；
Second obtains module, for obtaining electrical control electric fan demand torque；
Third obtains module, for obtaining air pressure pump demand torque；
4th obtains module, for obtaining steering pump demand torque；
5th obtains module, for obtaining compressor of air conditioner demand torque；
Computing module, for being turned round to the generator demand torque, the electrical control electric fan demand torque, the pneumatics demand pump
Square, the steering pump demand torque and the compressor of air conditioner demand torque carry out summation operation, obtain the need of engine accessory power rating
Seek torque；
Described first, which obtains module, includes:
Computing unit, for utilizing actual torque × temperature compensation coefficient after relational expression generator demand torque=generator filtering
× time compensation factor calculates the generator demand torque；
Actual torque is the torque obtained after being filtered to generator actual torque, the generator after the generator filtering
Actual torque is obtained by engine speed and the determination of generator load rate, and the temperature compensation coefficient passes through to engine temperature
It is demarcated to obtain, the time compensation factor is the time constant demarcated determined according to runing time after engine start
Value.
8. device according to claim 7, which is characterized in that described second, which obtains module, includes:
First determination unit, for determining that the electrical control electric fan demand is turned round according to engine speed and electrical control electric fan operating condition
Square, wherein when the engine speed increases, the electrical control electric fan demand torque increases, when the electrical control electric fan operates shape
When state becomes larger, the electrical control electric fan demand torque increases.
9. device according to claim 8, which is characterized in that when the electrical control electric fan is electromagnetic clutch fan, institute
State engine accessory power rating torque acquisition means further include:
6th obtains module, for obtaining the electrical control electric fan operating condition；
The 6th acquisition module includes: the second determination unit, for according to engine speed and the electromagnetic clutch fan
Setting speed, determine the electromagnetism valve opening of the electromagnetic clutch fan；
Third determination unit, for determining that the electrical control electric fan operates shape according to the electromagnetism valve opening of the electromagnetic clutch fan
State；
Wherein, the third determination unit includes:
First determines subelement, is increase tendency for the electromagnetism valve opening when the electromagnetic clutch fan and is greater than middling speed fortune
When turning to open when electromagnetism valve opening setting value, determine that the electrical control electric fan operating condition is middling speed operating condition；
Second determines subelement, is reduction trend for the electromagnetism valve opening when the electromagnetic clutch fan and is less than middling speed fortune
When turning to close when electromagnetism valve opening setting value, determine that the electrical control electric fan operating condition is low-speed running state；
Third determines subelement, is increase tendency for the electromagnetism valve opening when the electromagnetic clutch fan and is greater than fortune at full speed
When turning to open when electromagnetism valve opening setting value, determine that the electrical control electric fan operating condition is full-speed operation state；
4th determines subelement, is reduction trend for the electromagnetism valve opening when the electromagnetic clutch fan and transports less than full speed
When turning to close when electromagnetism valve opening setting value, determine that the electrical control electric fan operating condition is middling speed operating condition.
10. device according to claim 7, which is characterized in that the third obtains module and includes:
Query unit, for inquiry air pressure pump corresponding with engine speed in the torque mapping table needed for default air pressure pump
Required torque, torque needed for the air pressure pump inquired are the air pressure pump demand torque.
11. device according to claim 7, which is characterized in that the described 4th, which obtains module, includes:
4th determination unit, for determining the steering pump demand torque, and the steering pump determined according to engine speed
Demand torque is the constant value that can be demarcated, guarantee when vehicle turn radius is big when the constant value demarcated is engine idling
Torque value needed for vehicle normal turn.
12. device according to claim 7, which is characterized in that the described 5th, which obtains module, includes:
5th determination unit for determining the compressor of air conditioner demand torque according to engine speed, and works as the engine
When revolving speed increases, the compressor of air conditioner demand torque increases.
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| CN107298036B (en) * | 2017-06-23 | 2019-08-27 | 北京新能源汽车股份有限公司 | A kind of motor output torque control method and device |
| CN110217234B (en) * | 2019-06-26 | 2021-08-31 | 奇瑞汽车股份有限公司 | Control method and device for power output of engine |
| CN111824116A (en) * | 2020-03-26 | 2020-10-27 | 同济大学 | Hybrid power engine torque coordination module and coordination method |
| CN112525539B (en) * | 2020-11-26 | 2023-09-05 | 湖南行必达网联科技有限公司 | Automobile engine torque detection method and device and automobile environment bin |
| CN112628002B (en) * | 2020-12-18 | 2023-04-28 | 东风汽车有限公司 | Whole fuel oil vehicle, engine control idling control method, electronic equipment and engine controller |
| CN113401031B (en) * | 2021-07-08 | 2022-10-14 | 浙江吉利控股集团有限公司 | Vehicle-mounted instant heating type drinking water system and vehicle |
| CN113799779B (en) * | 2021-09-24 | 2023-05-05 | 东风商用车有限公司 | Method and device for calculating torque response requirement of engine |
| CN114962236A (en) * | 2022-06-14 | 2022-08-30 | 中国第一汽车股份有限公司 | Control method, device and system for torque compensation of variable displacement compressor |
| CN115506909A (en) * | 2022-09-28 | 2022-12-23 | 广西玉柴机器股份有限公司 | Control method for quick stop of engine |
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| US6584391B2 (en) * | 2001-07-23 | 2003-06-24 | International Engine Intellectual Property Company, Llc | Engine torque calculation |
| JP4066236B2 (en) * | 2002-05-10 | 2008-03-26 | 株式会社デンソー | Auxiliary drive system for automobile |
| CN2657974Y (en) * | 2003-06-25 | 2004-11-24 | 华南理工大学 | Series-parallel type power assembly of mixed power electric vehicle |
| WO2008113186A1 (en) * | 2007-03-20 | 2008-09-25 | Litens Automotive Partnership | Starter and accessory drive system and method for hybrid drive vehicles |
| US8821342B2 (en) * | 2010-12-31 | 2014-09-02 | Cummins Inc. | Accessory drive motor configuration |
| CN102490720B (en) * | 2011-12-26 | 2014-12-10 | 潍柴动力股份有限公司 | Power assembly control method for hybrid engineering machine, and hybrid assembly system |
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