EP1136680A1 - Vorrichtung zur Erzeugung eines Fahrpedalsignals - Google Patents

Vorrichtung zur Erzeugung eines Fahrpedalsignals Download PDF

Info

Publication number
EP1136680A1
EP1136680A1 EP01105216A EP01105216A EP1136680A1 EP 1136680 A1 EP1136680 A1 EP 1136680A1 EP 01105216 A EP01105216 A EP 01105216A EP 01105216 A EP01105216 A EP 01105216A EP 1136680 A1 EP1136680 A1 EP 1136680A1
Authority
EP
European Patent Office
Prior art keywords
pedal
output signal
released
accelerator pedal
accelerator
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.)
Granted
Application number
EP01105216A
Other languages
English (en)
French (fr)
Other versions
EP1136680B1 (de
Inventor
Bart Schreurs
Michel Peters
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.)
Delphi Technologies Inc
Original Assignee
Delphi Technologies Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Delphi Technologies Inc filed Critical Delphi Technologies Inc
Publication of EP1136680A1 publication Critical patent/EP1136680A1/de
Application granted granted Critical
Publication of EP1136680B1 publication Critical patent/EP1136680B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
    • F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
    • F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
    • F02D11/105—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type characterised by the function converting demand to actuation, e.g. a map indicating relations between an accelerator pedal position and throttle valve opening or target engine torque

Definitions

  • the present invention generally relates to a method for generating a pedal output signal of an accelerator pedal.
  • ETC electronic throttle control
  • displacements of the accelerator pedal are electronically determined and transmitted.
  • a sensor is coupled to the accelerator pedal and the position of the pedal is converted into a pedal output signal supplied to the ETC.
  • the pedal output signal depends on the pedal position, it is used as an indication of the pedal position by the ETC.
  • the object of the present invention is to provide a method for generating a pedal output signal for ETC, which permits to reduce engine speed flares and more generally to improve a vehicle's driveability. This object is achieved by a method as claimed in claim 1.
  • a method in accordance with the invention generally concerns the generation of a pedal output signal of an accelerator pedal for electronic load control of an internal combustion engine.
  • the pedal output signal depends on the position of the accelerator pedal. Therefore, a variation of the pedal output signal may be produced by a displacement of said accelerator pedal. It shall be appreciated that, under given conditions, a given absolute variation in said pedal output signal is generated by a different accelerator pedal displacement depending on whether the accelerator pedal is depressed or released. This means that, under given conditions, a different pedal output signal is generated for a same pedal position depending on whether the accelerator pedal has been depressed or released. It follows that the pedal output signal is no longer generated so as to simulate a conventional accelerator pedal, i.e.
  • the method of the invention permits to generate, in definable conditions, a different pedal output signal for a same pedal position. Therefore, the response of the engine to a pedal displacement can be adapted in function of preferred driving behaviors, thereby improving the driveability of the vehicle.
  • a given absolute variation in said pedal output signal is produced by a shorter accelerator pedal displacement when said accelerator pedal is released than when it is depressed. This means that a pedal output signal indicating an entirely released pedal, i.e. an idle output signal, may be generated before the accelerator pedal has been entirely released.
  • a first advantage of this method is that the engine speed will earlier reach the idle engine speed, thereby reducing engine speed flares during gearshifts. Secondly, even if a driver doesn't entirely release the pedal during a gearshift, an idle output signal can be generated to prevent engine speed flares.
  • anticipating the pedal position for which an idle output signal is generated introduces an offset in the accelerator pedal, which under certain conditions may prove troublesome. Indeed, after a series of accelerations and decelerations the driver may arrive at a point where the pedal is almost entirely depressed and where an idle output signal is generated, thereby hindering acceleration. In order to prevent such a situation, given conditions for generating a different pedal output signal for a same pedal position will be preferably defined.
  • An initial pedal movement is to depress the accelerator pedal from the entirely released pedal position.
  • the pedal output signal may be generated according to an acceleration function with the actual pedal position as an argument.
  • the pedal output signal is generated according to the acceleration function, i.e. the pedal is being depressed, and if the accelerator pedal is suddenly released, then the pedal output signal will be advantageously generated according to a deceleration function.
  • the deceleration function is steeper than the acceleration function, thereby ensuring a rapid decrease of the pedal output signal to the idle output signal.
  • generating the pedal output signal according to the deceleration function implies an offset in the accelerator pedal.
  • the deceleration function already generates an idle output signal for an offset pedal position different from the entirely released pedal position.
  • the accelerator pedal has been released to the offset pedal position, it is clear that if the accelerator pedal is further released the pedal output signal has to remain an idle output signal. Therefore, if the accelerator pedal is further released from the offset pedal position, then the deceleration function is preferably translated so as to generate an idle signal output for the actual pedal position.
  • the deceleration function, or a translation thereof may be used to generate the pedal output signal when the pedal has been released and is subsequently depressed. Indeed, using the acceleration function each time that the pedal is depressed and using the deceleration function each time that the accelerator pedal is released would produce discontinuities in the pedal output signal.
  • the pedal output signal is therefore preferably generated according to the deceleration function or to a translation thereof, i.e. an analogous function which is parallel shifted, until it reaches the pedal output signal that would be generated according to the acceleration function. Then the pedal output signal will be generated according to the acceleration function.
  • the deceleration function is translated so as to obtain a coherent and continuous pedal output signal. If the accelerator pedal has been released from the offset pedal position to a given pedal position and if it is depressed again, then the pedal output signal is generated according to the deceleration function shifted or translated by a value corresponding to the difference between the offset pedal position and the given pedal position.
  • this shifted deceleration function generates an idle output signal for said given pedal position and the pedal output signal varies as with the deceleration function when the accelerator pedal is depressed.
  • the method of the invention is implemented in order to generate a pedal output signal of an accelerator pedal in such a way that engine speed flares may be reduced or avoided during gearshifts. Therefore, in this preferred embodiment, under given conditions, a given absolute variation in the pedal output signal is produced by a shorter accelerator pedal displacement when the accelerator pedal is released than when it is depressed.
  • absolute variation here means the absolute value of the variation, i.e. the value of the variation independently of its sign. It follows that a pedal output signal indicating an entirely released pedal, i.e. an idle output signal, may be generated before the accelerator pedal has been entirely released.
  • the pedal output signal is preferably generated according to an acceleration function (face) or to a deceleration (f dec ), depending on the situation.
  • An example for such acceleration and deceleration functions is shown in Fig. 1, where each of the functions is represented by a straight line.Numerical examples will be used for a better understanding of this preferred embodiment of the method of the invention.
  • the pedal output signal (POS) is also assumed to range from 0 to 100%.
  • a pedal output signal of 0% corresponds to an idle output signal.
  • the deceleration function is steeper than the acceleration function.
  • a pedal output signal of 0% i.e. idle output signal
  • f dec 0% when the pedal position reaches an offset pedal position equal to PO, which shall be called offset pedal position.
  • the slope of the deceleration function is a constant. It is preferably about 10% steeper than the slope of the acceleration function. However, in this embodiment, the slope has been set to 1.4 (i.e. 40% steeper) in order to exaggerate the effect of the method.
  • the pedal offset depends on the switch position and is needed to obtain the equation of the deceleration function. Hence the pedal offset is calculated as soon as a release of the pedal is detected and a transition from face to f dec should be performed.
  • the deceleration function is advantageously shifted (parallel shift) to the current pedal position (i.e. towards decreasing pedal positions) as long as the pedal position decreases so that an idle output signal can be generated.
  • the translation may be carried out by modifying the variable PP in the deceleration function f dec by a value corresponding to the pedal displacement between the offset pedal position and the current pedal position. For example, if the pedal is decreased to 7.5%, then POS shall be given by f dec (PP+(14.3-7.5)). In the present embodiment, the same result can be achieved by giving PO the value of the current pedal position.
  • This translated f dec is indicated by reference sign D' in Fig.1. It allows the generation of a coherent pedal output signal since the pedal output signal thus varies as with the initial deceleration function.
  • f dec (PP+(14.3-7.5)) reaches facc(PP) then the pedal output signal is again given by f acc, as previously explained.
  • a convenient way to implement the present method is to adapt it for an on-board computer. The preferred flowchart for programming the method is shown in Fig.2.
  • the pedal position is compared to the old pedal position in order to detect acceleration or deceleration.
  • the pedal output signal anticipates the pedal position.
  • the decreasing part of the second peak is shown in Fig.4.
  • the present method permits, in this example, to reach the idle output signal (0%) 32 ms before the accelerator pedal is entirely released. It follows that engine speed flares can be reduced during gearshifts since an idle output signal is generated before the pedal has been entirely released.
EP01105216A 2000-03-23 2001-03-03 Vorrichtung zur Erzeugung eines Fahrpedalsignals Expired - Lifetime EP1136680B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU90555 2000-03-23
LU90555A LU90555B1 (en) 2000-03-23 2000-03-23 Method for generating a pedal output signal of an accelerator pedal

Publications (2)

Publication Number Publication Date
EP1136680A1 true EP1136680A1 (de) 2001-09-26
EP1136680B1 EP1136680B1 (de) 2006-08-23

Family

ID=19731882

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01105216A Expired - Lifetime EP1136680B1 (de) 2000-03-23 2001-03-03 Vorrichtung zur Erzeugung eines Fahrpedalsignals

Country Status (3)

Country Link
EP (1) EP1136680B1 (de)
DE (1) DE60122410T2 (de)
LU (1) LU90555B1 (de)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0341659A1 (de) * 1988-05-11 1989-11-15 Siemens Aktiengesellschaft Steuervorrichtung für die Drosselklappe einer Brennkraftmaschine
US4881428A (en) * 1986-06-18 1989-11-21 Honda Giken Kogyo Kabushiki Kaisha Throttle valve control apparatus for internal combustion engine
DE4305737A1 (de) * 1993-02-25 1994-03-03 Daimler Benz Ag Vorrichtung zum Regeln der Fahrgeschwindigkeit eines Kraftfahrzeuges
DE4403604A1 (de) * 1994-02-05 1995-08-10 A B Elektronik Gmbh Verfahren und Vorrichtung zur Steuerung der Verstellung einer die Leistung einer Brennkraftmaschine bestimmenden Drosselklappe
FR2718191A1 (fr) * 1994-04-05 1995-10-06 Peugeot Procédé et dispositif de suppression des oscillations longitudinales d'un véhicule automobile à moteur.
US5540633A (en) * 1993-09-16 1996-07-30 Toyota Jidosha Kabushiki Kaisha Control device for variable displacement engine
DE19644477A1 (de) * 1995-10-26 1997-04-30 Jatco Corp Motorabtriebs-Steuereinheit
EP0962350A2 (de) * 1998-06-05 1999-12-08 Bayerische Motoren Werke Aktiengesellschaft Vorrichtung zur Veränderung der Betätigungscharakteristik eines Leistungssteuerorgans

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0768924B2 (ja) * 1986-11-26 1995-07-26 日本電装株式会社 スロツトル弁制御装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4881428A (en) * 1986-06-18 1989-11-21 Honda Giken Kogyo Kabushiki Kaisha Throttle valve control apparatus for internal combustion engine
EP0341659A1 (de) * 1988-05-11 1989-11-15 Siemens Aktiengesellschaft Steuervorrichtung für die Drosselklappe einer Brennkraftmaschine
DE4305737A1 (de) * 1993-02-25 1994-03-03 Daimler Benz Ag Vorrichtung zum Regeln der Fahrgeschwindigkeit eines Kraftfahrzeuges
US5540633A (en) * 1993-09-16 1996-07-30 Toyota Jidosha Kabushiki Kaisha Control device for variable displacement engine
DE4403604A1 (de) * 1994-02-05 1995-08-10 A B Elektronik Gmbh Verfahren und Vorrichtung zur Steuerung der Verstellung einer die Leistung einer Brennkraftmaschine bestimmenden Drosselklappe
FR2718191A1 (fr) * 1994-04-05 1995-10-06 Peugeot Procédé et dispositif de suppression des oscillations longitudinales d'un véhicule automobile à moteur.
DE19644477A1 (de) * 1995-10-26 1997-04-30 Jatco Corp Motorabtriebs-Steuereinheit
EP0962350A2 (de) * 1998-06-05 1999-12-08 Bayerische Motoren Werke Aktiengesellschaft Vorrichtung zur Veränderung der Betätigungscharakteristik eines Leistungssteuerorgans

Also Published As

Publication number Publication date
LU90555B1 (en) 2001-09-24
DE60122410D1 (de) 2006-10-05
EP1136680B1 (de) 2006-08-23
DE60122410T2 (de) 2007-02-01

Similar Documents

Publication Publication Date Title
KR100362604B1 (ko) 자동차의제어장치및제어방법
US6466851B2 (en) Vehicle control system for continuously variable transmission having manager control unit
US4153033A (en) System for disabling some cylinders of internal combustion engine
US8977461B2 (en) Vehicle control system
US4924832A (en) System and method for controlling ignition timing for internal combustion engine
US5819705A (en) Process and system for controlling a motor vehicle diesel engine
US4416230A (en) Engine control apparatus
CN102782295B (zh) 车辆控制系统及车辆控制方法
US9719443B2 (en) Vehicle control system and vehicle control method
US4438423A (en) Device for producing an optical or acoustic shift instruction
US20030144784A1 (en) Control system for vehicle
US5611754A (en) Control system for internal combustion engines
EP2096285A2 (de) Drehmomentberechnungsverfahren für Motor
US7415342B2 (en) Fuel delivery control system
JP3648273B2 (ja) 車両の自動切換式変速機の操作方法および操作装置
US4683455A (en) Shifting timing indicating system for a vehicle
CN102116209A (zh) 可变排量发动机的燃料管理系统和方法
EP1124049A3 (de) Ausgangsdrehmoment-Steuerungssystem für Verbrennungsmotoren in Kraftfahrzeugen
US6847877B2 (en) Method and arrangement for controlling a drive unit
US5551932A (en) Engine idle control during braking with lockup clutch being released
JP2014114751A (ja) 車両用制御装置
EP1136680A1 (de) Vorrichtung zur Erzeugung eines Fahrpedalsignals
US5499952A (en) Method and arrangement for controlling the power of a drive unit of a motor vehicle
US20040011575A1 (en) Method and device for operating the drive motor of a vehicle
US6223720B1 (en) Diesel engine speed control to prevent under-run

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR IT

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20020202

AKX Designation fees paid

Free format text: DE FR IT

17Q First examination report despatched

Effective date: 20040820

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR IT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20060823

REF Corresponds to:

Ref document number: 60122410

Country of ref document: DE

Date of ref document: 20061005

Kind code of ref document: P

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20070524

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20120319

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20120404

Year of fee payment: 12

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20131129

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 60122410

Country of ref document: DE

Effective date: 20131001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130402

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131001