CN101528497A - Device for displaying accelerator opening degree and method of displaying accelerator opening degree - Google Patents
Device for displaying accelerator opening degree and method of displaying accelerator opening degree Download PDFInfo
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- CN101528497A CN101528497A CNA2007800401289A CN200780040128A CN101528497A CN 101528497 A CN101528497 A CN 101528497A CN A2007800401289 A CNA2007800401289 A CN A2007800401289A CN 200780040128 A CN200780040128 A CN 200780040128A CN 101528497 A CN101528497 A CN 101528497A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2250/00—Driver interactions
- B60L2250/16—Driver interactions by display
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Abstract
The present invention discloses a accelerator level display device 1 includes an accelerator level detection unit 12 configured to detect an accelerator level; a target accelerator level determining unit 14b configured to determine a target accelerator level for the accelerator level; and a display unit 15a, 20 configured to display a target accelerator level indicator corresponding to the target accelerator level and an accelerator level indicator corresponding to the detected accelerator level. The display unit is configured to display the target accelerator level indicator as a fixed value regardless of the target accelerator level determined by the target accelerator level determining unit.
Description
Technical field
The present invention relates to show the accelerator opening read out instrument of the accelerator opening of chaufeur, relate in particular to and the accelerator opening read out instrument and the accelerator opening display method that show accelerator opening as the target aperture of target in the lump.
Background technology
Chaufeur has carefully been considered travelling of combustion expense mostly, and general also recommendation has been avoided idle running, stopped the driving of tickover and flat-out acceleration.; be not limited to the operation of the combustion expense variation (rising) of understanding easily of this by touch; therefore the very big influence of the acceleration operation in the middle of combustion Fei Yehui is subjected to travelling has proposed according to the read out instrument (for example, with reference to patent documentation 1, patent documentation 2) that shows information auxiliary improvement (reduction) combustion expense.
When the read out instrument that patent documentation 1 is put down in writing has been selected to be suitable for reducing the speed change pattern (economic speed change pattern) of combustion expense at chaufeur, judge whether driver behavior is suitable for reducing the combustion expense, if carried out being suitable for reducing the driver behavior of combustion expense, then open electricity-saving lamp, otherwise close electricity-saving lamp, impel chaufeur to reduce the driver behavior of combustion expense thus.
In addition, the read out instrument that patent documentation 2 is put down in writing compares the recommendation driving model of the current combustion expense value calculated and each vehicle and by changing the suitable mode that jams on that color shows accelerator (suitably, stop to jam on, jam on excessively), impels the chaufeur of having seen this demonstration to carry out appropriate driver behavior.
, if as the read out instrument of patent documentation 1 record, just come the switch electricity-saving lamp, will there be the few problem of quantity of information that is provided by the judgement driver behavior.Electricity-saving lamp only shows whether driver behavior is suitable for reducing the combustion expense, and does not know how many amounts are the threshold value of range switch lamp also have, so and does not know will will speed up device afterwards steps on what.Therefore, the chaufeur that causes paying attention to the combustion expense uses the low zone of accelerator opening more, may cause travelling with the high accelerator opening of combustion expense for a long time.In addition, drive if cooperate the opening and closing of electricity-saving lamp to regulate accelerator operation amount, then chaufeur can increase and decrease accelerator operation amount continually near the threshold value of switch lamp, and the combustion expense is risen.
In addition, although the read out instrument of record in the patent documentation 2 in order to make comparisons with the combustion expense of recommending driving model and to calculate instantaneous combustion expense, because instantaneous combustion expense is the combustion expense in past, therefore can't be indicated the mode that jams on of accelerator before the combustion expense rises.In addition, owing to for causing that the reason that instantaneous combustion expense rises do not carry out any demonstration, so chaufeur can't judge that the operation of avoiding the expense of firing to rise still is the operation of not avoiding firing the expense rising.Thereby, be difficult to before combustion expense rises to carry out suitable driver behavior and prevent that the combustion expense from rising by impelling.In addition, the same with the read out instrument of patent documentation 1 record, owing to do not know the amount of the threshold value of the threshold value of accelerator operation amount distance indication " appropriately " and demonstration " it is excessive to step on ", therefore exist and do not know that what problem will will speed up device afterwards jams on.
Patent documentation 1: the Japanese documentation spy opens the 2003-220851 communique;
Patent documentation 2: the Japanese documentation spy opens the 2002-370560 communique.
Summary of the invention
In view of the above problems, the objective of the invention is to, provide a kind of and show that bootable chaufeur makes its operation not break away from the accelerator opening read out instrument and the accelerator opening display method of the information in the accelerator operation zone that is suitable for firing expense efficient.
In view of the above problems, the invention provides a kind of accelerator opening read out instrument, it is characterized in that, comprising: the accelerator opening detecting unit, detect accelerator opening; Target aperture determining unit is extracted the target accelerator opening of described accelerator opening; And display unit (for example, accelerator opening display unit 15a and accelerator opening indicating device 20), show with the corresponding target aperture of described target accelerator opening displayed value (expected value for example described later) and with the corresponding accelerator opening displayed value of detected accelerator opening (currency for example described later), wherein, described display unit is no matter how the determined described target accelerator opening of described target aperture determining unit is shown as predetermined value with described target aperture displayed value all the time.
According to the present invention, owing to show currency with respect to expected value, so chaufeur can confirm will speed up pedal and what are stepped on just can reach expected value, can combustion take rise before the appropriate acceleration of execution operate.In addition, owing to the demonstration of expected value is scheduled to, so therefore chaufeur discerns demonstration information easily as long as currency is quickened operation as index.
Can provide and to show that the guiding chaufeur makes its operation not break away from the accelerator opening read out instrument of the information of the operating area that is suitable for firing expense efficient.
Description of drawings
Fig. 1 is an example of the functional block diagram of accelerator opening read out instrument;
Fig. 2 is the example that the instrument display part that is arranged on the instrument carrier panel is shown;
Fig. 3 is recommendation zone and the non-figure that recommends the zone that is used to illustrate accelerator opening;
Fig. 4 is an example of accelerator opening indicating device that currency and expected value are shown with analog quantity respectively;
Fig. 5 is non-linearly a be mapped example of the accelerator opening indicating device that shows of variable quantity that the variable quantity that will speed up the device aperture and the currency that is shown be shown;
Fig. 6 be used to illustrate the variable quantity of the accelerator opening that ' locked ' zone is outer and the variable quantity of the currency that is shown between the figure of nonlinear correspondence relation;
Fig. 7 is used for illustrating that fuel increases the figure of variable quantity and the nonlinear correspondence relation of the variable quantity of the currency that is shown of the accelerator opening in zone;
Fig. 8 is the figure of variable quantity and the nonlinear correspondence relation of the variable quantity of the currency that is shown of the accelerator opening in the zone that is used for illustrating that engine speed is low;
Fig. 9 is the accelerator opening read out instrument shows the processing sequence of currency on the accelerator opening indicating device a diagram of circuit;
Figure 10 is the figure that the variation of accelerator opening indicating device is shown;
Figure 11 is an example (embodiment 2) of the functional block diagram of accelerator opening read out instrument;
Figure 12 is the figure of an example that the change of acceleration pedal depression amount is shown;
Figure 13 is non-linearly a be mapped example of the accelerator opening indicating device that shows of variable quantity that the variable quantity that will speed up the device aperture and the currency that is shown be shown;
Figure 14 is the accelerator opening read out instrument shows the processing sequence of currency on the accelerator opening indicating device a diagram of circuit.
Nomenclature
1 accelerator opening read out instrument
11 car speed sensors
12 accelerator travel sensors
13 acceleration pedals
14 Engine ECU
14a target accelerator opening mapping graph
14c variation calculating unit
15 instrument ECU
15a accelerator opening display unit
16 throttle valve motors
17 throttle position sensoies
18 crank-position sensors
19 instrument display parts
20 accelerator opening indicating devices
21 change-speed box ECU
Information display more than 34
The specific embodiment
Below, with reference to accompanying drawing and enumerate embodiment preferred implementation of the present invention is described.
The accelerator opening read out instrument 1 of present embodiment shows the information to the acceleration operation of fuel-economizing regional guidance chaufeur, so that driving engine and drive system are kept high efficiency.Not accelerator opening or bad these the two kinds of values of accelerator opening of combustion expense that show that merely the combustion expense is good thus, but with respect to accelerator opening as target, show current accelerator opening, chaufeur can be regulated operational ton so that be no more than the target accelerator opening thus, therefore can realize high efficiency travelling.
Fig. 1 shows the functional block diagram of accelerator opening read out instrument 1.Accelerator opening read out instrument 1 comprises: be used to detect motoring condition and serviceability sensor class, Engine ECU (Electrical Control Unit: electronic control unit) 14 and instrument ECU 15, these each several parts via CAN (Controller Area Network: controller local area network) wait for bus in LAN link to each other.Instrument ECU 15 and Engine ECU 14 are made of following microcomputer, this microcomputer comprises: the CPU of executive routine, as the operating area of executive routine or the RAM of temporary storaging data, EEPROM (the Electronically Erasableand Programmable Read Only Memory: EEPROM (Electrically Erasable Programmable Read Only Memo)) that also keeps data when closing ignition device, the IO interface of the interface between inputoutput data and conduct and other ECU, the communication controller that communicates with other ECU, and stored program ROM etc., and these each several parts link to each other by bus.By the CPU executive routine, realize determining the accelerator opening display unit 15a of the demonstration of the target aperture determining unit 14b of accelerator opening (below, be called the target accelerator opening) and control accelerator opening indicating device 20 as target.In addition, in for example ROM of Engine ECU 14, store target accelerator opening mapping graph 14a described later.
Engine ECU 14 is the basic controlling of carrying out driving engine, control according to accelerator opening injection fuel fuel injection control and at the control setup of best timing to the most appropriate engine control such as the ignition control of light-up plug energising.On Engine ECU 14, be connected with based on crank position and come the crank-position sensor 18 of detection of engine rotating speed, the throttle position sensor 17 of detection throttle valve angle, and the throttle valve motor 16 that flow regulating valve is carried out open and close controlling.Engine ECU 14 according to accelerator opening to throttle valve motor 16 request flow regulating valve drive amount, and the rotating speed control the during constant speed drive of rotating speed control when detecting actual throttle valve angle and carry out and cruising control etc. with the corresponding throttle valve angle control of accelerator opening, tickover by throttle position sensor 17.
Instrument ECU 15 obtains the signal of various sensors, other ECU and Switch, and lights predetermined mark and warning such as do not fasten with vehicle state such as display speed and engine speed and car door on table display part 19.In the present embodiment, on instrument display part 19, have accelerator opening indicating device 20, be used to show the accelerator opening that is suitable for the fuel-economizing driving.
The accelerator opening demonstration information that accelerator opening display unit 15a comes based on sending from Engine ECU 14 shows accelerator opening on accelerator opening indicating device 20.Accelerator opening demonstration information is as the target accelerator opening of target and current accelerator opening.Accelerator opening display unit 15a will speed up device aperture demonstration information and replaces to the displayed value of accelerator opening indicating device 20 to show current accelerator opening.
Fig. 2 shows an example of the instrument display part 19 that is arranged on the instrument carrier panel.Instrument display part 19 for example comprises: the driven pointer of stepper motor is indicated the water thermometer 32 of engine cooling water temperature, the speed gage 35 of the fuel quantity ga(u)ge 33 of the detected residual fuel of residual fuel metering device, the average speed indicator 37 that shows the speed of a motor vehicle and demonstration engine speed etc. is passed through in demonstration in the same way by passing through.Accumulative mileage table/trip meter 31 is that accumulative mileage table and trip meter are switched the liquid crystal indicator that is presented on the same position, and can show current gear (N, D, P, R).Clock 36 with current time showing on liquid crystal.
The many information displays (below, be called MID) 34 that are arranged on central authorities can utilize the dot matrix of liquid crystal to show, thereby show various information with the analog quantitys such as size of digital quantity such as numeral, literal or symbol, mark.For example, when being necessary driver assistance person, show instantaneous combustion expense, average combustion expense, the continued operating range of calculating based on average combustion expense and residual fuel, average ground speed and other.Can switch the information that demonstration is shown by MID 34 by operating predetermined button.When operation the corresponding button switches to the demonstration of accelerator opening with MID 34, just show accelerator opening indicating device 20.
Owing in driving procedure, need to carry out continually accelerator operation, if therefore (Head Up Display: device projection accelerator opening indicating device 20 on front windshield head up display) then can be shown to sight line and move on the less position by HUD.The display part of accelerator opening indicating device 20 special uses also can be set on instrument display part 19 in addition.
Accelerator opening indicating device 20 is described.Accelerator opening indicating device 20 is not calculate instantaneous combustion expense just to show the device that is suitable for the accelerator opening that fuel-economizing travels.
(a) of Fig. 3 shows an accelerator opening and an example that fires the relation of taking.In the low zone of accelerator opening, drive line efficiency is low, has the tendency of combustion expense variation, in addition, in the high zone of accelerator opening, because unnecessary fuel sprays, has the tendency of combustion expense variation.Thereby, the combustion expense of Chu Xianing reaches the accelerator opening of optimum for being suitable for most the combustion expense optimization point that fuel-economizing is travelled during this period, but because the combustion expense reaches near the zone that still obtains comfortable rideability of the accelerator opening of optimum, therefore, if the operation in that combustion takes the front guiding chaufeur of optimization point just may reduce driving performance.Therefore, in the present embodiment, the accelerator opening that has surpassed combustion expense optimization point slightly is set at threshold value (being equivalent to the target accelerator opening), and the operation of guiding chaufeur is to reach the accelerator opening below the target accelerator opening.Thus, can not make most chaufeur feel to show under the awkward situation accelerator opening as target.
In addition, the transmission efficiency of transmission system (from the power-transfer clutch to the change-speed box, transmission shaft, diff, axle drive shaft) changes according to the speed of a motor vehicle, so the target accelerator opening also changes according to the speed of a motor vehicle.Therefore, in the present embodiment, accordingly suitable target accelerator opening is stored among the target accelerator opening mapping graph 14a in advance with the speed of a motor vehicle.Also can wait and calculate the target accelerator opening according to the speed of a motor vehicle and surrounding environment.
(b) of Fig. 3 shows an example of the relation of the speed of a motor vehicle and target accelerator opening.(b) of Fig. 3 is the mode of target accelerator opening mapping graph 14a.In (b) of Fig. 3, the side that throttle valve angle is bigger than target accelerator opening is regional for the non-recommendation that combustion takes variation, and a little side is for recommending the zone.Accelerator opening indicating device 20 is the read out instruments to the accelerator opening of this recommendation regional guidance chaufeur.
If show the target accelerator opening stipulated as the accelerator opening of target and current accelerator opening, then the latter to be accelerator opening or the exceedance that chaufeur should append with respect to the former phase residual quantity be the accelerator opening that should reduce.
(a) of Fig. 4 be figure that the demonstration example that current accelerator opening and target accelerator opening are shown with analog quantity respectively is shown (below, the current accelerator opening that will show in MID 34 is called currency, and the target accelerator opening that will show in MID 34 is called expected value)., the demonstration as Fig. 4 (a) is not suitable as the demonstration information of driver's observation.Because the speed of vehicle changes at any time, so expected value also changes at any time, thereby the accelerator opening of chaufeur, is that currency also changes at any time.Therefore, currency and expected value can irrespectively change each other, and for example expected value but descends (perhaps opposite with it) etc. when currency has risen, and currency changes brokenly to the phase residual quantity of expected value, and chaufeur is difficult to regulate accelerator opening according to expected value.
Therefore, in the present embodiment, accelerator opening display unit 15a is shown as the demonstration information that a chaufeur should be grasped with currency and expected value combination.(b) of Fig. 4 shows an example of the accelerator opening indicating device 20 that is presented on the MID34.For demonstration information is combined into one, with currency to the ratio (currency is divided by the value of expected value) of expected value as currency, and fixed the display position of expected value.
By above-mentioned demonstration, with respect to the expected value that is fixed, the length of currency changes according to quickening operation, and chaufeur gets final product as long as poor (below, be called the amount of deviating from) of currency or expected value and currency carried out accelerator operation as index.The right side area of expected value is the transitional region of the rapid variation of combustion expense, and the right-hand member of transitional region for example is maximum accelerator opening.
In addition, become one in order to show information setting, also can be as Fig. 4 (c) the fixed target value display position and be that benchmark shows the amount of deviating from the expected value.In (c) of Fig. 4, it is more than needed that the length of the amount of deviating from expected value left side represents that accelerator operation distance objective value also has, and the length of the amount of deviating from right side represents that accelerator operation is excessive.
Chaufeur can be watched as (b) of Fig. 4 or the accelerator opening indicating device 20 (c) is regulated accelerator opening so that the amount of deviating from vanishing.As currency, show according to the accelerator opening of each predetermined period accelerator travel sensor 12 being exported be averaged and value, prevented excessive change thus.In addition, accelerator travel sensor 12 carries out correspondingly having applied in each position of viewing area the color display of color.
[non-linear demonstration]
In order under the good state of combustion expense, to travel the preferably accelerator opening channeling conduct in recommending the zone reliably.In addition, even in recommending the zone, the combustion expense can change all the time along with the engine control of Engine ECU 14, therefore is preferably in to capture the variation of currency rapidly before will entering transitional region, so that prevent to enter transitional region in advance.
Therefore, in the present embodiment, 15a carries out Nonlinear Processing to demonstration by the accelerator opening display unit, makes that the variation that accelerator opening is little is accelerated device indicator of opening 20 and is shown as bigger variation under the accelerator opening before will reaching the target accelerator opening.
(a) of Fig. 5 shows an example of accelerator opening indicating device 20, and (b) of Fig. 5 shows an example of the corresponding relation that the variable quantity of the variable quantity that will speed up the device aperture and the currency that is shown non-linearly is mapped.In (a) of Fig. 5, the zone of the accelerator opening indicating device 20 that the variable quantity of the currency that is shown is bigger than the variable quantity of accelerator opening is as region of variation rapidly.With the corresponding region of variation rapidly of nonlinear area of Fig. 5 (b), sharply become big with the demonstration amount of the cooresponding currency of variable quantity of accelerator opening.In addition, the zone beyond region of variation rapidly, the operational ton of accelerator opening is almost equal with the variable quantity of the currency that is shown.
With the zone of the corresponding accelerator opening of region of variation rapidly is for example to be to be equivalent to from the drive line efficiency border of Fig. 3 (a) to the zone of target accelerator opening.Because this zone has had the tendency of combustion expense variation, therefore be shown as the big variation of currency by the little variation that will speed up the device aperture, improve the information resolution that combustion takes the zone of variation.The zone of taking variation in combustion, the small size increase of accelerator opening can cause currency significantly (rapidly) near expected value, therefore chaufeur is more promptly reacted than the zone beyond the region of variation rapidly the time based on the currency of being seen (amount of deviating from), thereby can carry out the suitable feedback operation of rollback accelerator opening etc.
According to the Nonlinear Processing that shows, when the difference of accelerator opening and target accelerator opening is predetermined value when above (being the accelerator opening beyond the region of variation rapidly here), be shown as poor at the expected value of the difference of accelerator opening and target accelerator opening and currency greater than region of variation rapidly at the difference of the expected value of the difference of accelerator opening and target accelerator opening and currency.
In addition, also can in the whole display field till expected value, will speed up the variable quantity of device aperture and non-linear being mapped of variable quantity of demonstration amount.(c) of Fig. 5 shows an example that will speed up the corresponding relation that device aperture and the currency that is shown non-linearly be mapped.In (c) of Fig. 5, in the whole viewing area till expected value, more near expected value, the variable quantity of the currency that is shown is just more big than the variable quantity of accelerator opening.Owing to by in whole display field, carrying out non-linear demonstration the variable quantity at the shown currency of the operational ton of accelerator opening is become greatly gradually, so chaufeur carries out pulsation-free acceleration operation easily.
In addition, shown in Fig. 5 (d), also can in the little zone of accelerator opening, make for a short time, in zone, make at the variable quantity of the shown currency of the variable quantity of accelerator opening big near expected value at the variable quantity of the shown currency of the variable quantity of accelerator opening.
As mentioned above, variable quantity by variable quantity that makes accelerator opening and the currency that is shown becomes nonlinear relationship, chaufeur can be high in the zone of combustion expense variation (deteriorations) or near the zone of expected value the currency that is shown of information resolution identification also regulate accelerator opening accurately, therefore can not be absorbed in the accelerator opening of combustion expense variation, can realize the reduction of the expense of firing.In addition, because the such analog quantity of speed by the currency change shows that the degree of combustion expense variation is visually to point out, therefore can cause forcefully the attention of getting in touch between the combustion expense of demonstration and reality, can help chaufeur also to strengthen the consciousness of the good acceleration operation of the expense of firing psychologically.
[being used to be suppressed at the outer demonstration of using of ' locked ' zone]
Show than the variable quantity of accelerator opening biglyyer currency variable quantity accelerator opening indicating device 20 guiding quicken that operation makes that it carries out outside ' locked ' zone aspect also effective.The change-speed box of automatic gear car is designed to be in the lock state as much as possible, to improve transmission efficiency., when accelerator opening is big under middle low velocity, unlock in order to improve output and raising responsibility, so transmission efficiency can worsen significantly.
(a) of Fig. 6 shows an example of the relation of ' locked ' zone and target accelerator opening.When with the ' locked ' zone onrelevant when having stipulated the target accelerator opening, in middle lower speed range, if carry out accelerator operation as target with the target accelerator opening, will exceed ' locked ' zone, even thereby carry out accelerator operation in zone near expected value, in fact combustion expense also can worsen.Therefore, do not contain at ' locked ' zone under the speed of a motor vehicle of target accelerator opening, if by 20 channeling conducts of accelerator opening indicating device so that under lock-out state, travel as far as possible, then can reduce the combustion expense.
Therefore, accelerator opening display unit 15a makes the variable quantity of the outer accelerator opening of ' locked ' zone bigger than the variable quantity of the accelerator opening of ' locked ' zone.(b) of Fig. 6 shows the example of relation of the demonstration amount of accelerator opening and currency.In (b) of Fig. 6,, vertically show accelerator opening indicating device 20 in order to compare.Shown in Fig. 6 (b), outside ' locked ' zone, the variable quantity of demonstration amount is greater than the variable quantity of accelerator opening.
Therefore, when outside ' locked ' zone, travelling, because with respect to accelerator opening, the demonstration of the currency of accelerator opening indicating device 20 changes significantly, chaufeur is recognized exceedingly stepped on acceleration pedal 13 and can expect that it carries out the operation that pine returns acceleration pedal 13, therefore can realize reducing the combustion expense.
[being used to suppress the demonstration that combustion expense that the increase by fuel causes worsens]
Though Engine ECU 14 control fuel injection amounts, timing of ignition, throttle valve angle etc. are transferred to the control that the combustion expense worsens in order to tackle the waste gas restriction sometimes so that efficient reaches maximum.For example, in fuel injection control,, then increase the control of fuel injection amount for cooled catalyst in case accelerator opening reaches more than the certain value.
(a) of Fig. 7 shows an example of the relation in target accelerator opening and fuel increase zone.Increase in the zone at fuel,, still need channeling conduct to increase the zone to avoid fuel even therefore the distance objective accelerator opening is more than needed in addition because combustion takes deterioration.
Therefore, accelerator opening display unit 15a increases the zone at fuel and shows that the variable quantity of the currency that accelerator opening indicating device 20 is shown is so that its variable quantity greater than accelerator opening.(b) of Fig. 7 shows the example of relation of the demonstration amount of accelerator opening and currency.In (b) of Fig. 7,, vertically show accelerator opening indicating device 20 in order to compare.Shown in Fig. 7 (b), increase the zone at fuel, the variable quantity of currency is greater than the variable quantity of accelerator opening.
When increasing at fuel when travelling outside the zone, with respect to the variable quantity of accelerator opening, the demonstration of currency becomes greatly significantly, so chaufeur will appreciate that and exceedingly stepped on acceleration pedal 13.Therefore, it is increased at fuel carry out the operation that pine returns acceleration pedal 13 in the zone, therefore can not be absorbed in fuel increases the zone, can realize the reduction of the expense of firing.
[being used to suppress the demonstration of the use in low engine efficiency zone]
(a) of Fig. 8 shows an example of the relation of engine speed and engine efficiency.When vehicle when low velocity accelerates to high speed and spends, the relation of engine speed and torque is moved as migration line A.Vehicle is big in the low lower speed range load of engine speed usually, thereby efficient is low, and big if engine speed becomes, efficient will uprise.Therefore, in order to reduce the combustion expense, preferably shorten the little state of engine speed (state that accelerator opening is little).
Therefore, accelerator opening display unit 15a makes the variable quantity of the variable quantity of the shown currency of accelerator opening indicating device 20 less than accelerator opening in the little zone of accelerator opening.(b) of Fig. 8 shows the example of relation of the demonstration amount of accelerator opening and currency.In (b) of Fig. 8,, vertically show accelerator opening indicating device 20 in order to compare.At the slow region of variation of accelerator opening indicating device 20, with respect to the variable quantity of accelerator opening, the variable quantity of pairing demonstration amount is littler.
In the little zone of accelerator opening, even increase accelerator opening, the demonstration of currency also less changes, so chaufeur recognizes that the distance objective value is more more than needed in addition.Therefore therefore, can expect to carry out the operation of bend the throttle 13, can carry out breaking away from the guiding in the little zone of accelerator opening as soon as possible, thereby can improve the combustion expense in low efficiency region.
As mentioned above, when the difference of accelerator opening and target accelerator opening is predetermined value when above (being the accelerator opening of slow region of variation here), be shown as greater than poor at the expected value of the difference of accelerator opening and target accelerator opening and currency beyond the slow region of variation at the difference of the expected value of the difference of accelerator opening and target accelerator opening and currency.Therefore, at slow region of variation, it is more more than needed to make chaufeur recognize that the distance objective value also has, can channeling conduct to break away from the little zone of accelerator opening as soon as possible.
[action of accelerator opening read out instrument 1]
Fig. 9 shows accelerator opening read out instrument 1 shows the processing sequence of currency on accelerator opening indicating device 20 diagram of circuit.The flow chart illustration of Fig. 9 is as beginning by opening ignition device.Diagram of circuit when the processing sequence of Fig. 9 is low regional of the combustion expense deteriorated area (can be that zone, ' locked ' zone near expected value is outer and/or fuel increases the All Ranges in zone or also can be wherein any zone) of the side that shows that non-linearly accelerator opening is high and engine efficiency, the relation of the demonstration amount of accelerator opening and currency for example are equivalent to (c) or (d) among Fig. 5.
When driver's operation during acceleration pedal 13, accelerator travel sensor 12 detects accelerator openings (S10).Detected accelerator opening is sent to Engine ECU 14 every predetermined period.14b is according to accelerator opening, the speed of a motor vehicle for target aperture determining unit, and 14a determines the target accelerator opening from target accelerator opening mapping graph, sends accelerator opening to instrument ECU 15 and shows information.
Accelerator opening display unit 15a takes a decision as to whether high efficiency driving condition (S20) by comparison object accelerator opening and accelerator opening.About, whether high or low to being judged whether to be high efficiency driving condition based on accelerator opening by the degree of non-linear demonstration, be judged to be during to this degree and be not high efficiency driving condition when accelerator opening is high or low.
If be high efficiency driving condition ("Yes" of S20), then accelerator opening display unit 15a does not carry out non-linear demonstration, will be presented at (S30) on the accelerator opening indicating device 20 with the corresponding currency of accelerator opening.
If not high efficiency driving condition ("No" of S20), accelerator opening display unit 15a takes a decision as to whether the state (S40) of the low efficiency that is caused by the low speed of a motor vehicle or low engine speed.If the state ("Yes" of S40) of the low efficiency that is caused by the low speed of a motor vehicle or low engine speed, then accelerator opening display unit 15a shows currency (S60) with respect to the variable quantity of accelerator opening with little variable quantity.
If not the state ("No" of S40) of the low efficiency that is caused by the low speed of a motor vehicle or low engine speed, then accelerator opening display unit 15a takes a decision as to whether the accelerator opening (S50) that further increase accelerator opening can make the combustion expense worsen significantly.
If further increase the state ("Yes" of S50) that accelerator opening can make the combustion expense worsen significantly, then accelerator opening display unit 15a shows currency (S60) with respect to the variable quantity of accelerator opening with big variable quantity.In addition, if not increasing the state ("No" of S50) that accelerator opening can make the combustion expense worsen significantly, then accelerator opening display unit 15a does not carry out non-linear demonstration, will be presented at (S30) on the accelerator opening indicating device 20 with the corresponding currency of accelerator opening.
Chaufeur carries out feedback regulation according to the 20 pairs of accelerator openings of accelerator opening indicating device that as above show, therefore can carry out suitable accelerator opening operation, thereby under the low engine speed or the low speed of a motor vehicle, break away from inefficient accelerator opening as soon as possible, and, increase accelerator opening so that be not absorbed in low efficiency region.
[variation of accelerator opening indicating device 20]
Figure 10 shows several variation of accelerator opening indicating device 20.Accelerator opening indicating device 20 is so long as show that with respect to the expected value of having fixed the indicating device of currency gets final product.(a) of Figure 10 shows an example of circular accelerator opening indicating device 20.Circular accelerator opening indicating device 20 shows expected value and the transitional region of having fixed with concentric circles, and the size of the circle by its center shows currency.But be not limited to circular the demonstration, also can adopt other shape (for example, polygon such as triangle, quadrangle) to show.
(b) of Figure 10 shows an example of the accelerator opening indicating device 20 that adopts the pointer demonstration.Adopt accelerator opening indicating device 20 that pointer shows with respect to the expected value of having fixed, the position by the pointer indication shows currency.
(c) of Figure 10 shows an example that shows the accelerator opening indicating device 20 of accelerator opening by change in color.In (c) of Figure 10, make the sign of expression accelerator opening or symbol (being " Accel " among the figure) change color according to currency.For example, along with near expected value, indicate that the single-piece color gradually changes by the order of " green → yellow → red ".For example will make expected value corresponding to redness, and if the whole sudden strain of a muscle of sign is gone out, chaufeur just can be recognized and reach expected value.In addition, the sound that also can when reaching expected value, give the alarm.In non-linear viewing area, both can accelerate change in color, sign is dodged go out.In addition, if the variation of color combining on the accelerator opening indicating device 20 of circle or pointer demonstration then helps improving significant degree.
(d) of Figure 10 shows an example that shows the accelerator opening indicating device 20 of accelerator opening by numerical value.Accelerator opening display unit 15a is showing the currency of accelerator opening with numerical value with expected value under as 100 situation.By the accelerator opening indicating device 20 of numeric display, chaufeur can be grasped currency with numerical value.
According to the accelerator opening read out instrument 1 of present embodiment, owing to show the expected value of accelerator opening and current accelerator opening with analog quantity, and before combustion takes deterioration, guide to the high accelerator opening of efficient, therefore can prevent the deterioration of combustion expense.In addition, owing to take the accelerator opening place that worsens easily in combustion, the relation that will speed up device aperture and demonstration amount is made as nonlinear relationship, so can channeling conduct travels by the accelerator opening of low efficiency avoiding.
[being used to suppress the demonstration that accelerator opening changes repeatedly]
Chaufeur bend the throttle 13 increases the output of driving engine, and this output becomes the propulsive effort of acceleration or climbing etc.But if the time that jams on of acceleration pedal is very short, its propulsive effort just can not be delivered on the road surface, but by consumption such as tor-cons and become friction heat.That is, the stepping on the consumption of fuel to be converted to of the acceleration pedal of utmost point short time travelled, and therefore prevents that preferably this operation from being carried out repeatedly.In the present embodiment, the accelerator opening read out instrument 1 that the inhibition accelerator opening is changed repeatedly describes.In the accelerator opening read out instrument 1 of present embodiment, the accumulation depression amount with respect to the change of the average depression amount of acceleration pedal 13 (below, be called the accumulation variation), and be judged to be the accumulation variation when big, show currency than the accelerator opening of reality biglyyer.
Figure 11 shows the example of functional block diagram of the accelerator opening read out instrument 1 of present embodiment.In Figure 11, mark identical label and omit its explanation for the structure division identical with Fig. 1.The variation calculating unit 14c that the accelerator opening read out instrument 1 of Figure 11 has change-speed box ECU 21 and realized by the permission program by CPU.Change-speed box ECU 21 comes controlling torque by change-speed box is carried out gear shift, and obtains revolution ratio R1=(N1-N2) according to input shaft rotating speed N1 and output shaft rotational speed N 2.In addition, variation calculating unit 14c calculates the accumulation variation of acceleration pedal 13.
The following describes the accumulation variation.Figure 12 is the scheme drawing of an example of change of the depression amount of acceleration pedal 13.In Figure 12,, drawn the aviation value of accelerator opening and accelerator opening with respect to the time.Aviation value be therefore just now several values that are averaged to the accelerator opening of giving tens cycles are changed little, if but carry out jamming on of short time repeatedly, accelerator opening will change as the oblique line part of Figure 12.This oblique line partly accumulated and amount be the accumulation variation.
Specifically, utilize following formula to calculate the accumulation variation.Detected accelerator opening is made as A, and the aviation value that will speed up the past of device aperture A is made as A0, and computation accelerator aperture A deducts the absolute value integrated value in the given time of aviation value A0 income value in the case, as accumulation variation D.
D＝∫|A-A0|dt
Thereby though integration is with the definite integral of the schedule time as the interval, the schedule time is the time (about for example, several seconds～tens seconds) of change in short-term that is used to detect the accelerator opening beyond the adjusting of the necessity of accelerator opening being carried out for travelling.
When accumulation variation D is predetermined value D1 when above, accelerator opening display unit 15a show than and the big value of the corresponding currency of accelerator opening.The currency of accumulation variation D during less than predetermined value D1 with at (b) of Fig. 4 of embodiment 1 or the situation that illustrates (c) the same.
Figure 13 is non-linearly the be mapped figure of an example of the accelerator opening indicating device 20 that shows of variable quantity that the variable quantity that will speed up the device aperture and the currency that is shown be shown.As accumulation variation D during less than predetermined value D1, the accelerator opening display unit 15a of instrument ECU 15 fixes the display position of expected value and shows the histogram with regular length L1.And accelerator opening display unit 15a obtains the ratio R 2 of additron aperture to the target accelerator opening, and shows that length L 2 is the histogram of L2=R2 * L1, as currency.The length of histogram " L1-L2 " is the amount of deviating from B.The amount of deviating from B is for making accelerator opening should append the accelerator opening of stepping on again near target accelerator opening chaufeur.When the length L 2 of histogram had surpassed L1, the amount of deviating from B entered transitional region, became the accelerator opening that the accelerator answers rollback.
On the other hand, when accumulation variation D is predetermined value D1 when above, accelerator opening display unit 15a fixing with the corresponding expected value of target accelerator opening display position and show histogram with regular length L1.So accelerator opening display unit 15a enlarges the length L 2 of the histogram that shows the expression currency according to following formula.
L2α＝(K×D+η×(R1+1))×L2
Here, K is the variation conversion coefficient, and η is the revolution ratio conversion coefficient.In addition, these conversion coefficients are to enlarge the situation that shows length L 2 and suitably determine according to apply weight on which of accumulation variation D and revolution ratio R1.
In Figure 13, the histogram graph representation L2+ oblique line part of L2 α.Thereby, when accumulation variation D is predetermined value D1 when above, about with the corresponding currency of accelerator opening, the amount that the histogram of length L 2 is enlarged the oblique line part shows.In addition, the amount of deviating from B is the length difference " L1-L2 α " of histogram.
That is, when accumulation variation D is predetermined value D1 when above, accelerator opening display unit 15a constitute to chaufeur notice acceleration pedal 13 by the time and cross when stepping on and the so-called continuity point that pine returns is stepped on the notification unit that operation (flapping operation) just is being carried out.
Below, use diagram of circuit that the control content of the energy-conservation indicating device 1 of present embodiment is described.Figure 14 is accelerator opening read out instrument 1 shows the processing sequence of currency on accelerator opening indicating device 20 a diagram of circuit.
In S1, target aperture determining unit 14b obtains by accelerator travel sensor 12 detected accelerator openings, in S2, obtains by the car speed sensor 11 detected speed of a motor vehicle.
And, in S3, the target aperture determining unit 14b of Engine ECU 14 is based on the mapping graph of the accelerator opening shown in Fig. 3 (a) and the mapping graph of combustion expense, the speed of a motor vehicle shown in Fig. 3 (b) and accelerator opening, determine the target accelerator opening by crank-position sensor 18 detected engine speeds and by the car speed sensor 11 detected speed of a motor vehicle.
Then, in S4, the accumulation variation D of the variation calculating unit 14c computation accelerator aperture of Engine ECU 14.And change-speed box ECU 21 is according to not having the input shaft rotating speed N1 of graphic change-speed box and output shaft rotational speed N 2 to obtain revolution ratio R1=(N1-N2)/N1.
In S5, the accelerator opening display unit 15a of instrument ECU 15 judges whether accumulation variation D is more than the predetermined value D1, if accumulation variation D be more than the predetermined value D1 then enter among the S6, if accumulation variation D is less than predetermined value D1 then enter among the S10.
In S6, accelerator opening display unit 15a will be shown as the histogram of regular length L1 so that it remains fixed value with the corresponding expected value of target accelerator opening.Then, in S7, accelerator opening display unit 15a obtains the ratio R 2 of accelerator opening to the target accelerator opening.
Then, in S8, the accelerator opening display unit 15a of instrument ECU 15 obtains revolution ratio R1 from change-speed box ECU 21.In S9, the histogram of length L 2 is shown as the length of L2 α=(K * D+ η * (R1+1)) * R2 * L1.
In S10, accelerator opening display unit 15a will be shown as the histogram of regular length L1 so that it is always fixed value with the corresponding expected value of target accelerator opening.Then, in S11, accelerator opening display unit 15a obtains the ratio R 2 of accelerator opening to the target accelerator opening.
In S12, accelerator opening display unit 15a will be shown as the histogram of length L 2=R2 * L1 with the corresponding currency of accelerator opening.
Present embodiment according to above explanation, fixing under state by user's sight line of the MID 34 of the instrument display part 19 of accelerator opening display unit 15a control, when the accumulation variation D of accelerator opening is that predetermined value D1 is when above, accelerator opening display unit 15a identification user is just replacing and is stepping on continually or pine time acceleration pedal, promptly just carry out so-called continuity point and stepping on operation, and give the user with this advisory, step on operation thereby can make the user avoid carrying out such continuity point.
More than, understand the preferred embodiments of the present invention in detail, but the invention is not restricted to the embodiments described, can apply various distortion and replacement to the above embodiments without departing from the present invention.
For example, also can constitute MID 34 is brightness and the color that predetermined value D1 changes the part that currency A or the amount of deviating from B are shown of histogram when above at accumulation variation D, and also can constitute and be arranged on accumulation variation D in addition separately on instrument display part 19 is the lamp that predetermined value D1 lights or extinguishes when above.And, also can constitute by MID 34 and carry out text display, can also constitute by sounding and notify by being arranged on loud speaker on the instrument display part 19 or buzzer phone etc.
In addition, in the present embodiment, obtain the ratio R 2 of accelerator opening to the target accelerator opening, and by on the length L 1 of the histogram of representing expected value, multiply by the length L 2 that ratio R 2 is obtained the histogram of representing currency, the difference that has shown L1 and L2 then is as the amount of deviating from B, but also can with as the L1 of expected value as benchmark, obtain the amount of deviating from B in advance, show then from L1 to deduct the value of the amount of deviating from B as currency.
And, in the above-described embodiment, obtained currency by L2 α=(K * D+ η * (R1+1)) * L2, wherein, because rotating speed R1 is and the proportional parameter of the transmission efficiency of change-speed box, also is simultaneously that expression is because continuity point is stepped on operation and the parameter of deterioration of efficiency.
That is, when the length L 2 of the histogram of the currency that calculates the expression accelerator opening, also R1 can not used and by on the length L 1 that is equivalent to expected value, multiply by (K * D * 1) and ratio R 2 is obtained this length L 2.
In addition, in above-mentioned present embodiment, when the accumulation variation D of accelerator opening is that predetermined value D1 is when above, step on operation by expansion demonstration and the corresponding currency of accelerator opening to the user notification continuity point, the demonstration amount of deviating from B is next to step on operation to the user notification continuity point by enlarging but also can constitute.
This world application is the preceence that requires based on Japan's patent application 2006-290318 number of application on October 25th, 2006 and Japan's patent application of filing an application on February 7th, 2007 2007-028403 number, and the full content in Japan's patent application 2006-290318 number and the Japan's patent application 2007-028403 number is incorporated into during this world applies for by reference.
Claims (9)
1. an accelerator opening read out instrument is characterized in that, comprising:
The accelerator opening detecting unit detects accelerator opening;
Target aperture determining unit is determined the target accelerator opening of described accelerator opening; And
Display unit shows and described target accelerator opening corresponding target aperture displayed value and accelerator opening displayed value, and this accelerator opening displayed value is the displayed value of the described accelerator opening that is detected,
Wherein, described display unit is no matter how the described target accelerator opening of being determined by described target aperture determining unit is shown as predetermined value with described target aperture displayed value all the time.
2. accelerator opening read out instrument as claimed in claim 1 is characterized in that,
Described display unit shows the variable quantity of described accelerator opening displayed value changeably with respect to the variable quantity by the detected described accelerator opening of described accelerator opening detecting unit.
3. accelerator opening read out instrument as claimed in claim 2 is characterized in that,
When the difference by detected described accelerator opening of described accelerator opening detecting unit and described target accelerator opening is predetermined value when above, described display unit is littlelyr than the variable quantity that is shown described accelerator opening displayed value by the variable quantity of the detected described accelerator opening of described accelerator opening detecting unit.
4. accelerator opening read out instrument as claimed in claim 2 is characterized in that,
When by the detected described accelerator opening of described accelerator opening detecting unit being predetermined value when following, described display unit is littlelyr than the variable quantity that is shown described accelerator opening displayed value by the variable quantity of the detected described accelerator opening of described accelerator opening detecting unit.
5. accelerator opening read out instrument as claimed in claim 1 is characterized in that,
When the difference by detected described accelerator opening of described accelerator opening detecting unit and described target accelerator opening is predetermined value when above, described display unit is than by the difference of detected described accelerator opening of described accelerator opening detecting unit and described target accelerator opening during less than predetermined value, with respect to the difference of described accelerator opening and described target accelerator opening, the difference of described target aperture displayed value and described accelerator opening displayed value shows with respect to the difference of described accelerator opening and described target accelerator opening biglyyer, described target aperture displayed value and described accelerator opening displayed value poor.
6. accelerator opening read out instrument as claimed in claim 2 is characterized in that,
When by the detected described accelerator opening of described accelerator opening detecting unit being predetermined value when above, described display unit is biglyyer than the variable quantity that is shown described accelerator opening displayed value by the variable quantity of the detected described accelerator opening of described accelerator opening detecting unit.
7. accelerator opening read out instrument as claimed in claim 2 is characterized in that,
When the increase of described accelerator opening causes that the combustion expense reduces, when causing that than the increase of described accelerator opening the combustion expense rises, described display unit is littlelyr than the variable quantity that is shown described accelerator opening displayed value by the variable quantity of the detected described accelerator opening of described accelerator opening detecting unit.
8. accelerator opening read out instrument as claimed in claim 2 is characterized in that,
The variation calculating unit that comprises the variation of calculating described accelerator opening,
When described variation is predetermined value when above, described display unit is biglyyer than the variable quantity that is shown described accelerator opening displayed value by the variable quantity of the detected described accelerator opening of described accelerator opening detecting unit.
9. an accelerator opening display method is used to show the information based on the operational ton of acceleration pedal, and described accelerator opening display method may further comprise the steps:
Detect accelerator opening by the accelerator opening detecting unit;
Determine the target accelerator opening of described accelerator opening by target aperture determining unit; And
Show and described target accelerator opening corresponding target aperture displayed value and accelerator opening displayed value by display unit, wherein, described target aperture displayed value is no matter how described target accelerator opening gets predetermined value all the time, and described accelerator opening displayed value is the displayed value by the detected described accelerator opening of described accelerator opening detecting unit.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006290318A JP4539638B2 (en) | 2006-10-25 | 2006-10-25 | Accelerator position display device |
| JP290318/2006 | 2006-10-25 | ||
| JP028403/2007 | 2007-02-07 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110201563.3A Division CN102358189B (en) | 2006-10-25 | 2007-10-23 | Accelerator level display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101528497A true CN101528497A (en) | 2009-09-09 |
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ID=39439276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007800401289A Pending CN101528497A (en) | 2006-10-25 | 2007-10-23 | Device for displaying accelerator opening degree and method of displaying accelerator opening degree |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4539638B2 (en) |
| CN (1) | CN101528497A (en) |
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| JP4539638B2 (en) | 2010-09-08 |
| JP2008105559A (en) | 2008-05-08 |
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