CN1963165A - Internal combustion engine control device - Google Patents

Internal combustion engine control device Download PDF

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Publication number
CN1963165A
CN1963165A CNA2006101451047A CN200610145104A CN1963165A CN 1963165 A CN1963165 A CN 1963165A CN A2006101451047 A CNA2006101451047 A CN A2006101451047A CN 200610145104 A CN200610145104 A CN 200610145104A CN 1963165 A CN1963165 A CN 1963165A
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CN
China
Prior art keywords
information
acceleration request
characteristic
combustion engine
boost pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CNA2006101451047A
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Chinese (zh)
Inventor
五十岚修
奥山晃英
田畑正和
西田秀之
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
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Toyota Motor Corp
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Publication date
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Publication of CN1963165A publication Critical patent/CN1963165A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12—Control of the pumps
    • F02B37/16—Control of the pumps by bypassing charging air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/04—Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump
    • F02B37/10—Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump at least one pump being alternatively or simultaneously driven by exhaust and other drive, e.g. by pressurised fluid from a reservoir or an engine-driven pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12—Control of the pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
    • F02B39/02—Drives of pumps; Varying pump drive gear ratio
    • F02B39/08—Non-mechanical drives, e.g. fluid drives having variable gear ratio
    • F02B39/10—Non-mechanical drives, e.g. fluid drives having variable gear ratio electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D23/00—Controlling engines characterised by their being supercharged
    • F02D23/02—Controlling engines characterised by their being supercharged the engines being of fuel-injection type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0002—Controlling intake air
    • F02D41/0007—Controlling intake air for control of turbo-charged or super-charged engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/10—Introducing corrections for particular operating conditions for acceleration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
    • F02D41/2425—Particular ways of programming the data
    • F02D41/2429—Methods of calibrating or learning
    • F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
    • F02D41/2464—Characteristics of actuators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supercharger (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

Disclosed is an internal combustion engine control device which is disposed with a turbocharger 26 for the clark engine 28. The internal combustion engine control device judges the electric assistant require level based on the accellerator aperture and the accellerator aperture rate of change, and changes the torque characteristic for the clark engine 28 (the supercharging pressure characteristic of the MAT 26) according to the electric assistant require level.

Description

Combustion engine control
Technical field
The present invention relates to a kind of combustion engine control, more specifically relate to a kind of combustion engine control that turbosupercharger is housed that is suitable for controlling.
Background technique
Patent document 1 has disclosed a kind of control combustion engine control in conjunction with the turbosupercharger of electric notor has been housed.Described conventional equipment settles the standard according to predetermined electric power and determines to offer the electric power of electric notor, and described standard defines target boost pressure, actual supercharge pressure and the relation that offers between the electric power of electric notor.In addition, described conventional equipment study actual supercharge pressure is about the variation of the electric power that offers electric notor, and proofreaies and correct electric power and settle the standard, to adapt to the variation that the electric notor characteristic takes place in time.
The applicant knows that following file (comprising above-mentioned file) is correlation technique of the present invention
[patent document 1]
Japanese Patent Application No.2003-239754
[patent document 2]
Japan Patent No.3203869
Above-mentioned conventional equipment can not change the output characteristics of described electric notor.Wherein, employed electric notor has this unified output characteristics, and driver's sense of acceleration may be different from vehicle and quicken.The mode that described conventional equipment is carried out control can not make that the acceleration of vehicle is consistent with driver's sense of acceleration.At this on the one hand, described conventional equipment can further be improved.
Summary of the invention
The present invention is used for overcoming the above problems.An object of the present invention is to provide a kind of combustion engine control that can improve the manoeuvring performance of internal-combustion engine by the sense of acceleration accelerating vehicle that requires according to the driver.
Above-mentioned purpose realizes by the combustion engine control that comprises pressurized machine.Be provided with the acceleration request obtaining device, be used to obtain information about acceleration request from the driver.Also be provided with characteristic and determine device, be used for determining the boost pressure characteristic of pressurized machine according to described information about acceleration request.Also be provided with supercharger controller in addition, be used for pressurized machine being controlled according to determine the described boost pressure characteristic that device is determined by described characteristic.
When reading following detailed explanation in conjunction with the accompanying drawings, will obvious other purpose of the present invention and further feature.
Description of drawings
Fig. 1 shows the system construction according to first embodiment of the invention;
Fig. 2 is the flow chart that is presented at the program of carrying out in the first embodiment of the invention;
Fig. 3 shows the relation between secondary speed (rotating speed of electric notor) and the electric notor output setting;
Fig. 4 has shown a kind of mapping, and ECU uses this figure, with the relation between basis and engine speed and the target throttle valve, determines described target secondary speed;
Fig. 5 shows the boost pressure of MAT and the roadability figure of the relation between the compressor rotary speed thereof;
Fig. 6 is the flow chart that is presented at the program of carrying out in the second embodiment of the invention;
Fig. 7 shows the relation between secondary speed (rotating speed of electric notor) and the electric notor output setting;
Fig. 8 is the flow chart that is presented at the program of carrying out in the third embodiment of the invention;
Fig. 9 shows the system construction according to fourth embodiment of the invention;
Figure 10 A and 10B show the typical case's indication that is provided by indicator;
Figure 11 is the flow chart that is presented at the program of carrying out in the fourth embodiment of the invention;
Figure 12 is the magnitude of current mapping of quoting in the program of Figure 11;
Figure 13 is the flow chart that shows the program that is associated with fourth embodiment of the invention, carry out in the first modification embodiment;
Figure 14 is the accelerator pedal mapping of quoting in the program of Figure 13;
Figure 15 is the flow chart that shows the program that is associated with fourth embodiment of the invention, carry out in the second modification embodiment;
Figure 16 is the auxiliary starter secondary speed mapping of quoting in the program of Figure 15;
Figure 17 is the flow chart that shows the program that is associated with fourth embodiment of the invention, carry out in the 3rd modification embodiment;
Figure 18 is that the auxiliary secondary speed of quoting in the program of Figure 17 that stops to shine upon;
Figure 19 is the flow chart that is presented at the program of carrying out in the fifth embodiment of the invention;
Figure 20 is the auxiliary materials study corresponding diagram of quoting among Figure 19.
Embodiment
First embodiment
[system construction explanation]
Fig. 1 shows the system construction according to first embodiment of the invention.System shown in Figure 1 comprise have a plurality of cylinders (4 cylinders are arranged in the example of Fig. 1) diesel engine 10, be used for to described diesel engine 10 supply air gas handling system, be used for vent systems that waste gas is discharged from described diesel engine 10 and the control system that is used to control described diesel engine 10.Described diesel engine 10 is installed in the vehicle, and is used as the power source of vehicle.
The described gas handling system that is used for described diesel engine 10 comprises intake manifold 12 and the suction tude 14 that is connected on the described intake manifold 12.Air is brought into suction tude 14 from atmosphere, and is assigned to the firing chamber of each cylinder by intake manifold 12.The inlet of suction tude 14 is provided with air-strainer 16.Air flow meter 18 is installed in the downstream of described air-strainer 16, represents the signal of the flow velocity of the air of bringing suction tude 14 into output.
Air inlet shutter 20 is installed in the upstream of intake manifold 12.Interstage cooler 22 is installed in the upstream of air inlet shutter 20, with cooled compressed air.Boost-pressure sensor 24 is installed in the downstream of air inlet shutter 20, represents the signal of the pressure in the suction tude 14 with output.
The centre of the suction tude 14 between Air flow meter 18 and air inlet shutter 20 is provided with the turbosupercharger (MAT or motor assisted turbocharger) 26 in conjunction with electric notor.Described MAT 26 comprises compressor 26a, turbine 26b and the electric notor 28 between described compressor 26a and described turbine 26b.Compressor 26a is connected on the turbine 26b with integral way by joining shaft.The exhaust energy of the exhaust of compressor 26a by entering turbine 26b rotates.The rotor of described joining shaft double as electric notor 28.Therefore, compressor 26a can force to drive by operation electric notor 28.In addition, turbine speed sensor 30 is installed on the described joining shaft, represents the signal of compressor 26a rotating speed (secondary speed) with output.
One end of air inlet by-pass pipe 32 is connected to the middle part of the suction tude 14 between compressor 26a and the interstage cooler 22.The other end of air inlet by-pass pipe 32 is connected to the upstream extremity of compressor 26a.The middle part of air inlet by-pass pipe 32 is provided with by-pass valve 34, is used for being controlled at the flow velocity of air inlet by-pass pipe 32 flow air.When operation by-pass valve 34 when opening the inlet of air inlet by-pass pipe 32, part is returned the inlet side of compressor 26a by the air of compressor 26a compression.Under the running state that surge (surge) takes place probably, return the inlet side of compressor 26a by making air that part leaves compressor 26a through described air inlet by-pass pipe 32, can avoid this surge.
The described vent systems that is used for diesel engine 10 comprises gas exhaust manifold 36 and the outlet pipe 38 that is connected on the described gas exhaust manifold 36.The exhaust of discharging from all cylinders of diesel engine 10 is deflated manifold 36 and gathers, and enters outlet pipe 38 through gas exhaust manifold 36.
The described control system that is used for diesel engine 10 comprises ECU (ECU (Electrical Control Unit)) 40 and motor controller 42.Motor controller 42 bases are from the power supply of the command control electric notor 28 of ECU 40.The electric power of electric notor 28 provides from battery 44.ECU 40 provides the controller of comprehensive control of whole system shown in Figure 1.
The output terminal of ECU 40 is connected on closure 20, by-pass valve 34 and various other actuator and the motor controller 42.The input end of ECU 40 is connected on accel sensor 46, crank angle sensor 48, Air flow meter 18 and boost-pressure sensor 24 and various other various sensors.Motor controller 42 is connected on the turbine speed sensor 30.The signal of accelerator opening degree (that is volume under pressure of accelerator pedal (not shown)) is represented in accel sensor 46 outputs.The signal of the rotation angle of crank angle sensor 48 output signature song arbors.From the signal of crank angle sensor 48 make detection of engine rotational speed N E (rpm: the winding number of per minute) and so on become possibility.Except above these that exemplify, ECU 40 is also connected on other numerous equipment and the sensor.Yet their explanation has been omitted.ECU 40 is according to the output and the expectant control driven by program various device of various sensors.
[first embodiment's feature]
In the system according to present embodiment, the mapping (not shown) that concerns between the target boost pressure that is dominant in the running state of ECU 40 area definition diesel engine 10 and this running state.ECU40 carries out the boost pressure feedback control, makes by the actual supercharge pressure of boost-pressure sensor 24 detections consistent with the target boost pressure that is suitable for current running state.More specifically, ECU 40 calculates the deviation of actual supercharge pressure and target boost pressure, and carries out control according to making deviation reduce to zero mode.
If in the internal-combustion engine (such as diesel engine 10) that has in conjunction with the turbosupercharger of electric notor, the output characteristics of electric notor is a homogeneous, then described electric notor produces identical output when quickening, and does not consider the level of driver's acceleration request (electronic auxiliary requirement).Thereby, between the acceleration of vehicle and driver's sense of acceleration, can cause difference.For avoiding described difference and improve the manoeuvring performance of diesel engine 10, present embodiment changes the torque characteristics (the boost pressure characteristic of MAT 26) of electric notor 28 according to the level of driver's electronic auxiliary requirement.
[details of the process of finishing by first embodiment]
Fig. 2 is the flow chart that shows that the ECU 40 according to first embodiment carries out with the program that realizes above-mentioned functions.Suppose that described program is with the execution of preset time gap periods ground.
Program shown in Figure 2 is at first based on carrying out predefined procedure from the signal of above-mentioned each sensor (step 100) input.When each input signal obtains handling, obtain the various parameters of the running state of indication diesel engine 10.More specifically, obtain engine speed, accelerator opening, target throttle valve, fuel injection amount, actual supercharge pressure, actual secondary speed and other parameter.
Next step, execution in step 102 judges whether predetermined adjusting sets up, to start or to continue electronic auxiliary.More specifically, ECU 40 judges mapping with reference to ready running state, checks engine speed and accelerator opening, and judges whether the current running state of diesel engine 10 requires electronic auxiliary.Requiring electronic auxiliary running state is the running state of a kind of slow-speed of revolution, high load, although wherein be used to drive the exhaust energy deficiency of MAT 26, still needs high moment of torsion.If the current running state of diesel engine 10 needs electronic auxiliary, then auxiliary starter/continuation condition is set up.On the other hand, electronic auxiliary if the current running state of diesel engine 10 does not require, then auxiliary starter/continuation condition is false, and calling program is stopped.
Whether if electronic auxiliary starter/continuation condition is set up, then execution in step 104, high from the level of driver's acceleration request (electronic auxiliary requirement) with judgement.When accelerator opening and accelerator opening variance ratio during greater than the preset judgment value, the level of acceleration request is judged as height.At this, suppose to judge the level of acceleration request according to accelerator opening and accelerator opening variance ratio.Yet the level of acceleration request also can only be judged according to the accelerator opening variance ratio alternatively.
If the level height of the judged result that obtains in step 104 indication driver's acceleration request, then execution in step 106 is to select the Maximum Torque characteristic as the torque characteristics that drives electric notor 28.Fig. 3 shows the relation between secondary speed (rotating speed of electric notor 28) and the electric notor output setting.The waveform gradient that shows among Fig. 3 is represented the torque characteristics of electric notor 28.Waveform with abrupt slope is called the Maximum Torque characteristic, is called low torque characteristics and have the waveform that relaxes gradient.If the level height of the judged result that obtains indication acceleration request is then selected the Maximum Torque characteristic avoiding the delay in the turbosupercharging as mentioned above, and is satisfied the requirement that the driver quickens fast.
Next execution in step 108, to determine the target secondary speed according to engine speed and target throttle valve.Fig. 4 has shown a kind of mapping, and ECU uses this figure, with the relation between basis and engine speed and the target throttle valve, determines described target secondary speed.Mapping display-object secondary speed shown in Figure 4 increases with the increase of target throttle valve.Described mapping shows that also the increase with engine speed in low engine speed region of target secondary speed increases, and in high engine speed region, no matter the variation of engine speed remains constant.
On the other hand, if the level of the judged result that obtains in step 104 indication driver's acceleration request is low, then execution in step 110 is to select low torque characteristics as the torque characteristics that drives electric notor 28.Next execution in step 112, to determine the target secondary speed according to engine speed and target throttle valve.
Whether next execution in step 114, be that current electronic auxiliary starter/continuation condition is set up first cycle of treatment afterwards with the cycle of treatment of judging current starting.If it is first cycle of treatment that the judged result that obtains is indicated the cycle of treatment of current starting, then execution in step 116, writing down the actual supercharge pressure of MAT 26, and judge MAT 26 current whether operations in the low zone of boost pressure sensitivity.Fig. 5 shows the roadability figure that concerns between the boost pressure of MAT 26 and the compressor rotary speed thereof.As shown in Figure 5, this roadability that the compressor of MAT 26 has makes boost pressure increase with the increase of compressor rotary speed (secondary speed).In the low zone of compressor rotary speed, be changed even work as the torque characteristics of electric notor 28, when making boost pressure generation flip-flop, because described boost pressure is low, significant variation can not take place in the inlet air amount yet.Therefore we can say that boost pressure sensitivity is low in the low zone of compressor rotary speed.
If the judged result that obtains in the step 116 indication MAT 26 is currently operating in the low zone of boost pressure sensitivity,, can not produce excessive change in torque in the diesel engine 10 even then can conclude when described torque characteristics takes place to change rapidly yet.Thereby, do not use the torque characteristics of selecting in the step 106 with making any change, allow the rotation (step 118) of electric notor 28 auxiliary turbines with starting or continuation.
On the other hand, if the judged result that obtains in the step 116 indication MAT 26 is currently operating in the not low zone of boost pressure sensitivity, execution in step 120 subsequently then, make electric notor 28 carry out predetermined smoothing process, start or continue to provide boost pressure auxiliary with after changing the torque characteristics of in step 106 or 110, selecting gradually.On the other hand, this smoothing process is a kind of when torque characteristics will change, with the process of smooth function along with the time smoothing torque characteristics.
If the judged result of step 114 kind of acquisition indication, the cycle of treatment of current starting is not the cycle of treatment first time, then execution in step 122, and whether the torque characteristics value of electric notor that is used for current cycle of treatment with judgement is identical with the torque characteristics value of previous cycle of treatment.If the judged result that obtains indicates the torque characteristics value of electric notor of current cycle of treatment identical with torque characteristics value in the previous cycle of treatment, then execution in step 116 and step afterwards thereof.
On the other hand, if the judged result that obtains in the step 122 indication, the torque characteristics value of the electric notor of current cycle of treatment is different with torque characteristics value in the previous cycle of treatment, and then execution in step 124, will offer the torque characteristics of the current value change electric notor 28 of electric notor 28 by control.Execution in step 126 then, with step 116 in identical mode judge boost pressure sensitivity.Move in the low zone of boost pressure if the judged result that obtains in the step 126 indication MAT 26 is current, then execution in step 128, to continue to use selected torque characteristics in step 106 or 110.On the other hand, move in the not low zone of boost pressure if the judged result that obtains indication MAT 26 is current, then execution in step 130 subsequently to continue providing auxiliary, is carried out predetermined smoothing process to step 106 or 110 selected torque characteristicses simultaneously.
Whether next step execution in step 132 is set up to judge electronic auxiliary end condition.If the actual supercharge pressure of MAT26 does not reach target boost pressure, judge that then electronic auxiliary end condition is false.In this case, proceed electronic assisting.On the other hand, if the actual supercharge pressure of MAT 26 has reached target boost pressure, then judge electronic auxiliary end condition establishment.In this case, ECU cuts off the power supply of electric notor 28, makes electric notor 28 stop to provide electronic auxiliary (step 134).
According to the above program that describes with reference to Fig. 2, the torque characteristics of electric notor 28 (that is boost pressure characteristic of MAT 26) changes according to driver's acceleration request (electronic auxiliary requirement) level.By this mode carry out control make it possible to avoid vehicle to quicken and driver's sense of acceleration between difference, and improve the power performance of diesel engine 10.
In addition, said procedure is write down the actual supercharge pressure of MAT 26, and judges whether MAT 26 moves in the low zone of boost pressure sensitivity.When the boost pressure sensitivity of MAT 26 obtained judging in described program, the boost pressure sensitivity of MAT 26 can be adjusted rapidly, so that can obtain the sense of acceleration that the driver requires as early as possible.More specifically, if MAT 26 operation in the highly sensitive zone of boost pressure, described program can be avoided diesel engine 10 is applied excessive change in torque by switching on the nearest torque characteristics in the smoothing process of carry out being scheduled to.If MAT 26 operation in the low zone of boost pressure sensitivity, then described program can promptly make vehicle quicken, with the sense of acceleration that provides the driver to require by immediately nearest torque characteristics being offered electric notor 28.
First embodiment described above changes the torque characteristics of electric notor 28 according to the level of driver's electronic auxiliary requirement.Yet the method that changes the boost pressure characteristic of turbosupercharger according to the level of driver's electronic auxiliary requirement is not limited to above-mentioned explanation.More specifically, the present invention can change the boost pressure characteristic of turbosupercharger by output characteristics that directly changes electric notor 28 and the torque characteristics that changes electric notor 28 alternatively.In addition, the assisting agency of auxiliary described pressurized machine is not limited to described MAT 26, and the boost pressure characteristic of described pressurized machine changes according to electronic auxiliary requirement.Motor compressor or other can force the similar device of hydraulic booster all to can be used as assisting agency.
With regard to the boost pressure characteristic changes according to the level of acceleration request, do not need always to carry out control based on the level of electronic auxiliary requirement.If pressurized machine comprises variable nozzle mechanism, then can by the aperture that changes nozzle vane (VN) the boost pressure characteristic of pressurized machine be changed according to the level of acceleration request.In addition, if there is a kind of like this pressurization system, its outlet pipe comprises the exhaust gas valve (waste gate valve) of allowing aperture control, then can by the aperture that changes described exhaust gas valve the boost pressure characteristic of pressurized machine be changed according to the level of acceleration request.
First embodiment described above changes the torque characteristics of electric notor 28, to change the boost pressure characteristic of MAT 26.In other words, first embodiment changes the gradient of waveform shown in Figure 3.Yet the present invention is not limited to make in this way.Alternatively, can force the output characteristics that a upper limit changes electric notor 28 by giving in the output of described electric notor.
Whether first embodiment described above judges boost pressure sensitivity according to the actual supercharge pressure of MAT 26, and determines whether to carry out smoothing process, that is when the boost pressure characteristic changes, use smooth function along with time smoothing boost pressure characteristic value.Yet the present invention also can change the size of level and smooth amount alternatively, that is when the boost pressure characteristic changes, and is used for the size according to the smoothing factor of the smooth function of the level and smooth boost pressure characteristic value of actual supercharge pressure.
Among Shuo Ming first embodiment, when ECU 40 execution in step 104, accomplished in the above according to " the acceleration request obtaining device " of first aspect present invention; When ECU 40 execution in step 106,110 or 124, accomplished according to " characteristic is determined device " of first aspect present invention; And it is when ECU 40 execution in step 118,120,128 or 130, accomplished according to " supercharger controller " of first aspect present invention.
In addition, when ECU 40 execution in step 104,106 and 110, accomplished according to " the characteristic storage device " of third aspect present invention.
In addition, when ECU execution in step 104, accomplished according to " the horizontal judgment means of acceleration request " of eighth aspect present invention.
Second embodiment
Now with reference to the Fig. 6 and the 7 explanation second embodiment of the present invention.
By adopting hardware construction shown in Figure 1 and allowing ECU 40 carry out program (rather than program shown in Figure 2) shown in Figure 6, make according to second embodiment's system accomplished.
[second embodiment's feature]
For the sense of acceleration that requires according to the driver quickens vehicle with higher degree of accuracy,, in a plurality of steps, change the torque characteristics of MAT 26 according to second embodiment's system level according to driver's acceleration request (electronic auxiliary requirement).
[details of second embodiment's implementation process]
Fig. 6 shows that ECU 40 carries out the flow chart of realizing according to the above functional programs of present embodiment.Described program is carried out with preset time gap periods ground.With regard among Fig. 6 with regard to those steps identical among the Fig. 2 that shows first embodiment, omit its explanation or abridge with the same reference numbers of appointment.
In the program shown in Figure 6, execution in step 102 is to judge whether electronic auxiliary starter/continuation condition is set up.If the judged result that obtains indicates electronic auxiliary starter/continuation condition to set up, then execution in step 200, with the level of the acceleration request (electronic auxiliary requirement) of judging the driver.More specifically, whether execution in step 200 is not less than predetermined judgment value B to judge current accelerator opening variance ratio.If the judged result that obtains indicates current accelerator opening variance ratio to be not less than predetermined judgment value B, then execution in step 202, whether are not less than another judgment value A greater than judgment value B to judge current accelerator opening variance ratio.
If the judged result that obtains in the step 202 indication accelerator opening variance ratio is not less than judgment value A, that is the level height of driver's electronic auxiliary requirement, then execution in step 204, to select the Maximum Torque characteristic as the torque characteristics that is used to drive electric notor 28.Fig. 7 shows the relation between secondary speed (rotating speed of electric notor 28) and the electric notor output setting.As the situation of waveform gradient shown in Figure 3, waveform gradient shown in Figure 7 is represented the torque characteristics of electric notor 28.Waveform with steepest gradient is called the Maximum Torque characteristic; Have the waveform that relaxes gradient most and be called low torque characteristics; And the waveform with medium gradient is called middle torque characteristics.If the judged result that obtains is indicated the level height of electronic auxiliary requirement, then select the Maximum Torque characteristic avoiding the delay in the turbosupercharging as previously mentioned, and satisfy the requirement that the driver quickens fast.
Next execution in step 206, to determine the target secondary speed according to engine speed and target throttle valve.In the present embodiment, the target secondary speed also can be by obtaining with reference to mapping shown in Figure 4.
On the other hand, if the judged result that obtains in the step 202 indication accelerator opening variance ratio is less than judgment value A, that is, current accelerator opening variance ratio is between judgment value A and B, and it is medium that driver electronic auxiliary requires level, then execution in step 208, to select the medium torque characteristic as the torque characteristics that is used to drive electric notor 28.
Next step execution in step 210 is to determine the target secondary speed according to engine speed and target throttle valve.
If the judged result that obtains in the step 200 indication accelerator opening variance ratio is less than judgment value B, that is the level of driver's electronic auxiliary requirement is low, then execution in step 212, to select low torque characteristics as the torque characteristics that is used to drive electric notor 28.
Next execution in step 214, to determine the target secondary speed according to engine speed and target throttle valve.
Because the step 114 of said program and step afterwards thereof are identical with the counterpart of program shown in Figure 2, it are not elaborated at this.
Above program with reference to Fig. 6 explanation can be set up a kind of system, this system compares with system according to first embodiment, can change the torque characteristics of electric notor 28 according to the level of driver's acceleration request (electronic auxiliary requirement) more meticulously, and described system can make more accurately according to the sense of acceleration that the driver requires vehicle quicken.
The 3rd embodiment
Now the third embodiment of the present invention is described with reference to Fig. 8.
By adopting hardware construction shown in Figure 1 and allowing ECU 40 carry out program (rather than program shown in Figure 6) shown in Figure 8, make according to the 3rd embodiment's system accomplished.
In the program according to first embodiment shown in Fig. 2 or 6 or second embodiment, if the level of driver's electronic auxiliary requirement changes auxiliary the term of execution electronic, then execution in step 124, to change the torque characteristics of electric notor 28.Because pressing down accelerator by his mode, each driver reaches the acceleration purpose, make the electronic auxiliary of driver sense of acceleration that requires and the driver who produces according to accelerator pedal require the torque characteristics of determined electric notor 28 inconsistent, thereby said circumstances may occur.
In view of the foregoing, after described torque characteristics was determined by ECU 40, the 3rd embodiment learnt the variation of driver's electronic auxiliary requirement, and determines the torque characteristics of electric notor 28 according to the learning value that therefore produces.
[details of the 3rd embodiment's implementation process]
Fig. 8 shows that ECU 40 carries out the flow chart of realizing according to the above functional programs of present embodiment.Described program is carried out with preset time gap periods ground.For among Fig. 8 with the Fig. 6 that shows second embodiment in those identical steps, omit its explanation or abridge with the same reference numbers of appointment.
For for purpose of brevity, aforementioned smoothing process is got rid of outside program shown in Figure 8.Yet except the treatment step that described program comprises, described smoothing process also may obtain carrying out.
In program shown in Figure 8, if the judged result that obtains in the step 122 indication, the torque characteristics value that is used for current cycle of treatment is different with the torque characteristics value of previous cycle of treatment, and then execution in step 300, is answered number of times for " no " with the inquiry in the calculation procedure 122.More specifically, execution in step 300 switches to the number of times of higher torque characteristics and switches to the number of times of lower torque characteristics with calculating.Then described count results is stored in the storage of ECU 40.
After the step 200 of carrying out described program or 202 was judged drivers' the level of electronic auxiliary requirement, execution in step 302,304 or 306 was to determine the torque characteristics of electric notor 28 according to described learning value.For example, after determining torque characteristics,, can judge that then the driver does not obtain the strong sense of acceleration of expecting if accelerator pedal further presses down to switch to higher torque characteristics by ECU 40.On the contrary, if after torque characteristics is determined,, can judge that then sense of acceleration that the driver obtains is desired stronger than it if the pressure that is applied on the accelerator pedal reduces to switch to lower torque characteristics.
Now as an example description of step 304, although this step and step 302,304 similar with 306.If the count results that obtains in the step 300 indication has switched to higher torque characteristics, and is medium although then electronic auxiliary level is judged as, select the Maximum Torque characteristic, rather than the medium torque characteristic.On the other hand, medium if the count results that obtains in the step 300 indication has switched to lower torque characteristics although then electronic auxiliary level is judged as, select low torque characteristics, rather than the medium torque characteristic.In other words, carrying out torque characteristics according to the count value that obtains in the step 300 selects.This also is correct for step 302 and 306.
In the program of current explanation, execution in step 308 provides electronic auxiliary to start/to continue according to the torque characteristics of selecting in the step 302,304 or 306.
According to the said procedure of reference Fig. 8 explanation, torque characteristics obtains study, makes the sense of acceleration that the acceleration of vehicle requires near the driver.Thereby, described program make it possible to take into account the mode of each driver by him press down accelerator reach quicken purpose in, the sense of acceleration that requires according to the driver quickens vehicle in mode more suitably.
In the above among Shuo Ming the 3rd embodiment, when ECU 40 execution in step 300～306, accomplished according to " the acceleration request learning device " of tenth aspect present invention.
The 4th embodiment
Now with reference to Fig. 9～18 explanation fourth embodiment of the present invention.
Fig. 9 shows the system construction according to fourth embodiment of the invention.With regard among Fig. 9 with regard to those elements identical among Fig. 1, omit its explanation or with the same reference numbers abbreviation of appointment.
[the 4th embodiment's feature]
Described system shown in Figure 9 is at system similarity textural and shown in Figure 1, and just the former comprises auxiliary materials selector switch 50 and indicator 52.The information that described auxiliary materials selector switch 50 receives from the driver about electronic auxiliary requirement (acceleration request).Auxiliary materials selector switch 50 should be preferably mounted on the instrument panel or steering wheel of vehicle for example, makes the driver can operate described switch in his steering vehicle.
As shown in Figure 9, auxiliary materials selector switch 50 provides manual auxiliary mode, to allow the driver regulate auxiliary materials.There are three manual modes to utilize: LOW pattern, HIGH pattern and MID (medium) pattern.Described LOW pattern is used to the sense of acceleration that obtains to relax.Described HIGH pattern is used to obtain strong sense of acceleration.Described MID pattern is used to obtain the sense of acceleration of boundary between LOW pattern and HIGH pattern.Auxiliary materials selector switch 50 also provides OFF pattern and AUTO pattern.Described OFF pattern forbids that MAT 26 provides auxiliary.Described AUTO pattern does not need the driver to change auxiliary materials.In the AUTO pattern, ECU 40 is by carrying out for example program control auxiliary materials shown in Fig. 2,7 or 8.Described manual auxiliary mode is not that three kinds of different auxiliary materialies always are provided.The different auxiliary materialies that arbitrary number is provided can be set.
The running state of described indicator 52 output MAT 26.As shown in Figure 9, described indicator should be preferably mounted on the combination instrument panel of instrument panel, perhaps places in the information displaying device of vehicle.
Figure 10 A and 10B show the typical case's indication that is provided by indicator 52.When auxiliary materials selector switch 50 is set to " OFF " when selecting stop mode, is installed in indicator 52 on instrument front or the similar device and reads " STOP " shown in Figure 10 A.In manual auxiliary mode, the pointer of indicator 52 shows the current subsidiary level of the MAT 26 shown in Figure 10 B.Auxiliary materials selector switch 50 can provide mode of learning and economic model in addition, although auxiliary materials selector switch 50 shown in Figure 9 does not provide described pattern.When selecting mode of learning or economic model, indicator 52 can be read " LEARN " or " ECO ".The subsidiary level of the MAT 26 that is shown by indicator 52 is not limited to above-mentioned pattern indication.For example, can indicate actual supercharge pressure, torque value or the driving output value of MAT 26 alternatively.
By for example will implementing mode of learning and economic model afterwards in conjunction with the method for the 5th embodiment explanation.At this, suppose that indicator 52 visually informs the running state of driver MAT 26.Yet, alternatively also can be from acoustically or otherwise informing the running state of driver MAT 26.
In the present embodiment, indicator 52 shows the text message that glimmers when MAT moves.Because this can make the driver recognize that MAT 26 is moving, the driver just can rapid input pattern information.
Use above structure, make it possible to alleviate the sticky feeling of driver for change in torque in the diesel engine 10 by informing the current running state of driver MAT 26 with reference to Fig. 9,10A and 10B explanation.In addition, make it possible to inform the driver for example MAT 26 is current to be to operate in the HIGH pattern that big auxiliary materials is provided and emphasizes power performance, still operate in the LOW pattern that little auxiliary materials is provided and emphasizes fuel efficiency.Therefore, can point out the driver according to the pattern steering vehicle of selecting.
[details of the 4th embodiment's implementation process]
Figure 11 is the flow chart that shows a program of ECU 40 execution, and carrying out this program is in order to allow MAT 26 provide electronic auxiliary according to the output that is in the auxiliary materials selector switch 50 under the manual auxiliary mode.Suppose that described program is with the execution of preset time gap periods ground.As previously mentioned, by carrying out program, can provide electronic auxiliary under AUTO pattern, mode of learning and the economic model according to first, second or the 3rd embodiment.
In the program shown in Figure 11, at first execution in step 400, the voltage of being controlled with the auxiliary materials selector switch 50 of the electronic auxiliary materials that acquires change.Execution in step 402 then, provide auxiliary to judge whether auxiliary materials selector switch 50 is set as, that is, whether selected manual auxiliary mode.If manually auxiliary mode is selected, then, just can determine to offer the maximum current flow Imax (step 404) of electric notor 28 by with reference to magnitude of current mapping shown in Figure 12.
Mapping shown in Figure 12 makes the maximum current flow Imax that must offer electric notor 28 increase with the increase of the voltage of auxiliary materials selector switch 50 (that is increase of the auxiliary materials that is provided by preference pattern).On MAT 26, carry out load (moment of torsion) control by the amplitude that changes conductive current.Change the magnitude of current that will offer MAT 26 according to electronic auxiliary materials in the present embodiment, corresponding in first, second or the 3rd embodiment according to electronic auxiliary change torque characteristics.
Whether next execution in step 406, set up to judge electronic auxiliary starter condition.If described each condition is all set up, then execution in step 408, to begin to provide electronic auxiliary according to the maximum current flow Imax that determines in the step 404.Whether execution in step 410 subsequently, set up to judge predetermined electronic auxiliary end condition.If described condition is set up, then execution in step 412, to stop to provide electronic auxiliary.
Above program with reference to Figure 11 explanation makes it possible to carry out electronic assist control by this way: according to being convenient to the vehicle sense of acceleration that the electronic auxiliary requirement of basis by the driver of auxiliary materials selector switch 50 receptions provides the driver to require.
In the above among Shuo Ming the 4th embodiment, the maximum current flow Imax that offer MAT 26 changes according to the magnitude of voltage of auxiliary materials selector switch 50.Make the load (moment of torsion) that makes it possible to change continuously MAT 26 in this way according to magnitude of current.Yet, when making in this way, need on the motor controller 42 of control electric notor 28, carry out complicated inversion control.For example, below three kinds of optional methods can be used for simplifying the control system structure of diesel engine 10, and change electronic auxiliary materials according to the magnitude of voltage of auxiliary materials selector switch 50.
Below with reference to first kind of optional method of Figure 13 and 14 explanation.When reference Figure 13 illustrated first kind of optional method, wherein those and same steps as with reference to Figure 11 explanation were specified by the reference number identical with its appropriate section, and omission or only carry out brief description from this explanation.In program shown in Figure 13, with reference to the mapping of the accelerator pedal among Figure 14 execution in step 500, rather than step 404, and be identified for starting electronic auxiliary auxiliary starter pedal aperture eacca_ason.Mapping shown in Figure 14 makes auxiliary starter pedal aperture eacca_ason reduce with the increase of the magnitude of voltage of auxiliary materials selector switch 50.
Whether next step execution in step 502 is set up to judge electronic auxiliary starter condition, that is whether current accelerator opening eacca is greater than auxiliary starter pedal aperture eacca_ason.When the judged result that obtains indicated electronic auxiliary starter condition to set up, execution in step 504 was to begin providing electronic auxiliary.In this case, suppose that maximum current flow Imax remains fixed on the predetermined value.
According to top program with reference to Figure 13 explanation, the electronic auxiliary materials of requirement is big more, and it is just more little then to be used to start electronic auxiliary accelerator opening eacca.Therefore, can change electronic auxiliary mode according to electronic auxiliary requirement based on the driver of auxiliary materials selector switch 50.When comparing with included method in the program shown in Figure 11, said method can be simplified motor controller 42, said method reduces cost, and strengthens reliability, because just must indicate motor controller 42 to open (ON) or stop (OFF) motor-assist function.
Now with reference to Figure 15 and second kind of optional method of 16 explanations.When reference Figure 15 illustrated second kind of optional method, wherein those and same steps as with reference to Figure 11 explanation were specified by the reference number identical with its appropriate section, and omission or only carry out brief description from this explanation.In program shown in Figure 15, with reference to the mapping of the auxiliary starter secondary speed among Figure 16 execution in step 600, rather than step 404, and be identified for starting electronic auxiliary auxiliary starter secondary speed ent_ason.Mapping shown in Figure 16 makes auxiliary starter secondary speed ent_ason reduce with the increase of the magnitude of voltage of auxiliary materials selector switch 50.
Whether next step execution in step 602 is set up to judge electronic auxiliary starter condition, that is whether current secondary speed ent is greater than auxiliary starter secondary speed ent_ason.When the judged result that obtains indicated electronic auxiliary starter condition to set up, execution in step 604 was to begin providing electronic auxiliary.In this case, suppose that maximum current flow Imax remains fixed on the predetermined value.
According to top program with reference to Figure 15 explanation, the electronic auxiliary materials of requirement is big more, and it is just low more then to be used to start electronic auxiliary secondary speed ent.Therefore, can change electronic auxiliary mode according to electronic auxiliary requirement based on the driver of auxiliary materials selector switch 50.Because secondary speed ent handles as a parameter, then use said method to make it possible to the information of not considering that Engine ECU obtains, only just can determine the boost pressure characteristic, and carry out electronic assist control from information about MAT 26.When comparing with included method in the program shown in Figure 13, said method can further be simplified motor controller 42, reduces cost, and strengthens reliability.
Now with reference to Figure 17 and 18 the third optional methods of explanation.When reference Figure 17 illustrated the third optional method, wherein those and same steps as with reference to Figure 11 explanation were specified by the reference number identical with its appropriate section, and omission or only carry out brief description from this explanation.In program shown in Figure 17, if the judged result that obtains in the step 406 indicates electronic auxiliary starter condition to set up, then execution in step 700, have the electronic auxiliary of fixing maximum current flow Imax to begin to provide.Shine upon with reference to the auxiliary secondary speed that stops among Figure 18 then, execution in step 702, and be identified for stopping the electronic auxiliary auxiliary secondary speed ent_asoff that stops.Mapping shown in Figure 180 makes the auxiliary secondary speed ent_asoff that stops to increase (should be from Figure 18 and reduce) with the increase of the magnitude of voltage of auxiliary materials selector switch 50.
Whether next step execution in step 704 is set up to judge electronic auxiliary stop condition, that is whether current secondary speed ent is greater than the auxiliary secondary speed ent_asoff that stops.When the judged result that obtains indicates electronic auxiliary stop condition to set up, execution in step 706, electronic auxiliary to stop.
According to top program with reference to Figure 17 explanation, the electronic auxiliary materials of requirement is big more, then is used to provide the upper limit on the electronic auxiliary secondary speed ent just high more.Therefore, can change electronic auxiliary mode according to electronic auxiliary requirement based on the driver of auxiliary materials selector switch 50.Use said method to make it possible to only according to just carrying out electronic assist control about the information of MAT 26.Thereby said method can be simplified motor controller 42, reduces cost, and strengthens reliability.
In addition, when using said method, electronic auxiliary starter remains unchanged opportunity, and needn't take into account the level of electronic auxiliary requirement.Therefore, when beginning to provide auxiliary, diesel engine 10 produces consistent moment of torsion.Correspondingly, alleviated the sticky feeling of driver for moment of torsion.And mapping shown in Figure 180 can be adjusted, and with under the little situation of the auxiliary materials that requires, for example under the LOW pattern, stops electronic assisting early, to reduce energy consumption.
Among Shuo Ming the 4th embodiment, auxiliary materials selector switch 50 is corresponding to " reception unit " according to fifth aspect present invention in the above.
In addition, indicator is corresponding to " the auxiliary situation output unit " of the present invention the 12 aspect.
In addition, when ECU 40 closes and open the text message of indicator 52 when MAT 26 moves, accomplished according to " information output apparatus " of the present invention the 13 aspect.
In addition, when ECU 40 execution in step 600 or 702, accomplished according to " the secondary speed information setting device " of sixth aspect present invention.
The 5th embodiment
Now with reference to the Figure 19 and the 20 explanation fifth embodiment of the present invention.
By adopting hardware construction shown in Figure 9 and allowing ECU 40 carry out program (rather than program shown in Figure 11) shown in Figure 19, make according to the 5th embodiment's system accomplished.
When having disposed when being used to learn the driver and handling the mode of learning of the custom that accelerator pedal quickens, just make it possible to provide meet the electronic auxiliary of driver's feature.Present embodiment provides the system with economic model, this pattern can carry out learning functionality provide with feature according to the driver electronic auxiliary in, keep high fuel efficiency.
[details of the 5th embodiment's implementation process]
Figure 19 is the flow chart that shows a program of ECU 40 execution, and carrying out this program is in order to implement above economic model according to present embodiment.Described program is carried out with preset time gap periods ground.
In the program shown in Figure 19, at first execution in step 800, will offer auxiliary materials learning value Imaxg electric notor 28, that be used for maximum current flow Imax to read.Suppose that auxiliary materials learning value Imaxg calculates by the auxiliary materials learning program (not shown) of separately being carried out by ECU 40.
More specifically, auxiliary materials learning program basis is by ECU 40 average accelerator opening variance ratio constantly that calculate, that be used to quicken, study maximum current flow Imax makes auxiliary materials increase with the increase of described variance ratio, and reducing and reduce with described variance ratio.Figure 20 shows the example of the auxiliary materials study mapping of ECU 40 storages, and its calculating is used for the auxiliary materials learning value of mode of learning or is used for the auxiliary materials learning value Imax1 of economic model.
Mapping shown in Figure 20 makes auxiliary materials learning value Imax0 and Imax1 increase with the increase of average accelerator opening variance ratio.In addition, described mapping makes that the auxiliary materials learning value Imax1 that is used for economic model is littler than the auxiliary materials learning value Imax0 that is used for normal mode of learning.
Next step execution in step 802, whether selected to judge economic model by auxiliary materials selector switch 50.If the judged result that obtains indication economic model is selected, then execution in step 804, to calculate the maximum current flow Imax that proofreaies and correct according to auxiliary materials learning value Imax1.Subsequently, execution in step 406～412 is to provide electronic auxiliary according to the maximum current flow Imax that calculates in the step 804.
According to above described program with reference to Figure 19 explanation, the electronic auxiliary materials of being learnt under the economic model is always less than the electronic auxiliary materials of being learnt under the normal mode of learning.Therefore, the system according to present embodiment makes it possible to provide high fuel efficiency when the execution learning functionality is with the feature that meets the driver.If select economic model manual the change under the cumbersome situation of auxiliary materials, then described system can realize high efficiency, and is not forcing the sense of acceleration that the driver carries out provides the driver to require under the situation of separate procedure.
Among Shuo Ming the 5th embodiment,, accomplished in the above according to " fuel efficiency requires horizontal judgment means " of ninth aspect present invention when ECU 40 judges it is when selecting economic model or other pattern according to the voltage of indicator 52.
The major character and the summary of benefits of the invention described above are as follows:
Combustion engine control according to first aspect present invention comprises pressurized machine.The acceleration request obtaining device is set, and it is used to obtain the information about driver's acceleration request.Characteristic also is set determines device, it is used for according to the boost pressure characteristic of determining pressurized machine about the information of acceleration request.Supercharger controller is set in addition, and it is used for according to determined the boost pressure Characteristics Control pressurized machine that device is determined by characteristic.
In a second aspect of the present invention, pressurized machine may be to have the turbosupercharger that is used for turbine rotation is provided auxiliary assisting agency.The information that is obtained by the acceleration request obtaining device may be the information about driver's auxiliary requirement.
A third aspect of the present invention can comprise the characteristic storage device that is used to store a plurality of boost pressure characteristics.Characteristic determines that device can be according to the acceleration request that is stored in a plurality of boost pressure characteristics in the characteristic storage device for information about, selection boost pressure characteristic.
In a fourth aspect of the present invention, the acceleration request obtaining device can obtain information about acceleration request according to accelerator opening or accelerator opening variance ratio at least.
In a fifth aspect of the present invention, the acceleration request obtaining device can comprise reception unit, and it is used for except accelerator pedal also from the information of driver's reception about acceleration request.
In a sixth aspect of the present invention, characteristic determines that device can comprise secondary speed information setting device, described device is provided with the information about the secondary speed of turbosupercharger according to about the auxiliary information that requires, and according to determining the boost pressure characteristic about the information of secondary speed.
In a seventh aspect of the present invention, when boost pressure will be changed, characteristic determines that device can determine whether with smooth function the boost pressure characteristic value to be carried out smoothly, perhaps can determine the size of the smoothing factor of smooth function, described smooth function is used for according to the actual supercharge pressure of turbosupercharger the boost pressure characteristic value being carried out smoothly.
In a eighth aspect of the present invention, characteristic determines that device can comprise the horizontal judgment means of acceleration request, and described device is used for judging whether to emphasize acceleration performance according to the information about acceleration request.And when the horizontal judgment means judgement of acceleration request should be emphasized acceleration performance, do not compare in the time of should not emphasizing acceleration performance with the horizontal judgment means judgement of acceleration request, described characteristic determines that the device selection provides the boost pressure characteristic of big Engine torque.
In a ninth aspect of the present invention, characteristic determines that device can comprise the horizontal judgment means of fuel efficiency requirement, is used for judging whether to emphasize fuel efficiency according to the information about acceleration request.And when the horizontal judgment means judgement of fuel efficiency requirement should be emphasized fuel efficiency, judge with the horizontal judgment means of fuel efficiency requirement and not compare fuel efficiency should not be emphasized the time that described characteristic determines that device can select to provide the boost pressure characteristic of low Engine torque.
In a tenth aspect of the present invention, characteristic determines that device can comprise the acceleration request learning device that is used to learn about the change in information of acceleration request, and can be according to determining the boost pressure characteristic by the learning outcome of acceleration request learning device.
In a eleventh aspect of the present invention, assisting agency can be an electric notor.
A twelveth aspect of the present invention can comprise the secondary status output unit of the running state that is used to export assisting agency.
A thirteenth aspect of the present invention can comprise the information output apparatus that is used for output information, and described information indicating driver input is about the auxiliary information that requires.
In a fourteenth aspect of the present invention, the running state of secondary status output unit output can comprise the subsidiary level of assisting agency.
In a fifteenth aspect of the present invention, the information about auxiliary requirement by the acceleration request obtaining device obtains can comprise that indication should not provide auxiliary instruction.
A first aspect of the present invention makes the sense of acceleration accelerating vehicle that requires according to the driver become possibility, and has improved the power performance of internal-combustion engine.
A second aspect of the present invention makes it possible to by control the boost pressure characteristic of turbosupercharger according to driver's auxiliary requirement, with the sense of acceleration accelerating vehicle that requires according to the driver.
A third aspect of the present invention makes it possible to guarantee that the acceleration of vehicle meets driver's sense of acceleration.Its reason be according to about the Information Selection of driver's acceleration request suitable boost pressure characteristic.
A fourth aspect of the present invention makes it possible to obtain the information about driver's acceleration request exactly according to being accelerator opening or accelerator opening variance ratio at least.
A fifth aspect of the present invention makes it possible to the information of higher determinacy acquisition about driver's acceleration request.
A sixth aspect of the present invention makes it possible under the situation of the information that does not rely on accelerator opening or other internal combustion engines, according to the information control boost pressure of turbosupercharger aspect, and simplifies the hardware construction of assisting agency, reduces cost, and improves reliability.
A seventh aspect of the present invention makes it possible to judge the boost pressure sensitivity that the running state with turbosupercharger changes, and regulates the acceleration of vehicle apace, till its sense of acceleration that requires with the driver as early as possible is consistent.
A eighth aspect of the present invention makes when the driver requires strong sense of acceleration, can reduce to respond the time lag of acceleration.
A ninth aspect of the present invention makes when driver's acceleration request is emphasized fuel efficiency, can switch to the high aero mode of fuel efficiency.
A tenth aspect of the present invention makes it possible to consider the operating mode that is dominant with the accelerating period that the driver changes, and according to the sense of acceleration that the driver requires vehicle is quickened.
A eleventh aspect of the present invention makes it possible to provide above-mentioned each advantage in the system of having installed in conjunction with the turbosupercharger of electric notor.
A twelveth aspect of the present invention makes it possible to alleviate the sticky feeling of driver for change in torque in the internal-combustion engine by informing the current running state of driver assisting agency.
A thirteenth aspect of the present invention makes by making the driver recognize that assisting agency moves, and can point out the driver to import the information that requires about auxiliary.
A fourteenth aspect of the present invention makes it possible to provide details about the running state of assisting agency to the driver.
A fifteenth aspect of the present invention makes it possible to the sense of acceleration that requires according to the driver vehicle be quickened by allowing the driver judge whether to provide auxiliary.
In addition, the present invention is not limited to these embodiments, but in the case without departing from the scope of the present invention, can form variations and modifications.

Claims (15)

1. combustion engine control with pressurized machine, it comprises:
The acceleration request obtaining device, it is used to obtain the information about acceleration request from the driver;
Characteristic is determined device, and it is used for determining according to described information about acceleration request the boost pressure characteristic of described pressurized machine; And
Supercharger controller, it is used for according to determined the described boost pressure characteristic that device is determined by described characteristic described pressurized machine being controlled.
2. combustion engine control as claimed in claim 1, wherein, described pressurized machine is to have the turbosupercharger that is used for providing to turbine rotation auxiliary assisting agency; And wherein, the information of being obtained by described acceleration request obtaining device is the information about auxiliary requirement from the driver.
3. combustion engine control as claimed in claim 1 also comprises:
The characteristic storage device is used to store a plurality of boost pressure characteristics,
Wherein, described characteristic determines that device is according to the described described a plurality of boost pressure characteristics selection boost pressure characteristics of information from be stored in described characteristic storage device about acceleration request.
4. combustion engine control as claimed in claim 1, wherein, described acceleration request obtaining device basis is accelerator opening or accelerator opening variance ratio at least, obtains described information about acceleration request.
5. combustion engine control as claimed in claim 1, wherein, described acceleration request obtaining device comprises reception unit, is used for except accelerator pedal also from the information of driver's reception about acceleration request.
6. combustion engine control as claimed in claim 2, wherein, described characteristic determines that device comprises secondary speed information setting device, it is according to about the information of the auxiliary information setting that requires about the secondary speed of turbosupercharger, and determines described boost pressure characteristic according to described information about secondary speed.
7. combustion engine control as claimed in claim 2, wherein, in the time will changing described boost pressure, described characteristic determines that device determines whether with smooth function the boost pressure characteristic value to be carried out smoothly, perhaps according to the actual supercharge pressure of turbosupercharger, be identified for the size of smoothing factor of the smooth function of level and smooth boost pressure characteristic value.
8. combustion engine control as claimed in claim 1, wherein, described characteristic determines that device comprises the horizontal judgment means of acceleration request, described judgment means is used for judging whether to emphasize acceleration performance according to the information about acceleration request, and when the horizontal judgment means judgement of described acceleration request should be emphasized acceleration performance, do not compare in the time of should not emphasizing acceleration performance with the horizontal judgment means judgement of described acceleration request, described characteristic determines that the device selection provides the boost pressure characteristic of big Engine torque.
9. combustion engine control as claimed in claim 1, wherein, described characteristic determines that device comprises the horizontal judgment means of fuel efficiency requirement, described judgment means is used for judging whether to emphasize fuel efficiency according to the information about acceleration request, when the horizontal judgment means judgement of described fuel efficiency requirement should be emphasized fuel efficiency, do not compare in the time of should not emphasizing fuel efficiency with the horizontal judgment means judgement of described fuel efficiency requirement, described characteristic determines that the device selection provides the boost pressure characteristic of less Engine torque.
10. combustion engine control as claimed in claim 1, wherein, described characteristic determines that device comprises the acceleration request learning device that is used to learn about the change in information of acceleration request, and according to the learning outcome of described acceleration request learning device, determines described boost pressure characteristic.
11. combustion engine control as claimed in claim 1, wherein, described assisting agency is an electric notor.
12. combustion engine control as claimed in claim 2 also comprises:
Be used to export the secondary status output unit of the running state of described assisting agency.
13. combustion engine control as claimed in claim 2 also comprises:
The information output apparatus that is used for output information, described information indicating driver input is about the auxiliary information that requires.
14. combustion engine control as claimed in claim 2, wherein, the described running state of described secondary status output unit output comprises the subsidiary level of assisting agency.
15. combustion engine control as claimed in claim 2, wherein, the described information about auxiliary requirement by described acceleration request obtaining device obtains comprises that indication should not provide auxiliary instruction.
CNA2006101451047A 2005-11-11 2006-11-10 Internal combustion engine control device Pending CN1963165A (en)

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