WO2003078194A1 - Telecommande - Google Patents

Telecommande Download PDF

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Publication number
WO2003078194A1
WO2003078194A1 PCT/SE2003/000214 SE0300214W WO03078194A1 WO 2003078194 A1 WO2003078194 A1 WO 2003078194A1 SE 0300214 W SE0300214 W SE 0300214W WO 03078194 A1 WO03078194 A1 WO 03078194A1
Authority
WO
WIPO (PCT)
Prior art keywords
engine
control unit
starting
remote control
started
Prior art date
Application number
PCT/SE2003/000214
Other languages
English (en)
Inventor
Anders Jensen
Original Assignee
Scania Cv Ab (Publ)
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 Scania Cv Ab (Publ) filed Critical Scania Cv Ab (Publ)
Priority to EP03703627A priority Critical patent/EP1487657B1/fr
Priority to AU2003206334A priority patent/AU2003206334A1/en
Priority to DE60303920T priority patent/DE60303920T2/de
Publication of WO2003078194A1 publication Critical patent/WO2003078194A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • F02N11/0803—Circuits or control means specially adapted for starting of engines characterised by means for initiating engine start or stop
    • F02N11/0807—Remote means

Definitions

  • the present invention relates to a method for starting an engine and stopping the engine after the engine has started.
  • the invention also relates to a computer program and a control unit for starting and stopping the engine.
  • Remote engine starting systems are well known and incorporated in many road vehicles today. By e.g. pushing a button on a handheld radio signal transmitter, a person is able to remotely start an engine of a vehicle.
  • US-5673017-A is one example of a number of documents that disclose such a starting system.
  • Some vehicles have a stop button/switch for the engine on the outside of the vehicle, but substantially the same problem with the time it takes to stop the engine remains for these vehicles. The person has to locate the stop button and touch the stop button before the engine is stopped. Summary of the invention
  • An object of the present invention is to provide a faster and easier way of avoiding damages directly or indirectly caused by a running engine after a sign of a problem that causes the damages has been detected by a person.
  • the invention relates to a method for starting an engine, e.g. in a vehicle, and stopping the engine after the engine has started.
  • the method comprises the steps of: starting the engine by affecting, e.g. depressing or touching, an activation means of a remote control unit; staying in physical contact with the activation means during the starting of the engine and a time after the engine has started; and stopping the engine by releasing the physical contact with the activation means before a predetermined time has passed after the engine has started.
  • the engine is stopped, merely by releasing the physical contact with the activation means, after the engine has started to run.
  • the starting of the engine is defined as an attempt to start the engine, which at the initiation moment of the attempt is at rest.
  • the definition of when the engine has started is throughout the description and claims when any predetermined condition known in the art for defining that the engine is capable of running on its own is fulfilled, such as the condition that the engine is defined as started when the engine speed has reached a certain predetermined level.
  • the method may also comprise the step of stopping the starting of the engine if the engine has not been started before a time limit after the starting of the engine has begun.
  • a time limit may be within a time interval of 2-20 seconds.
  • the method may comprise the step of allowing the starting of the engine only if all of at least one start criterion is fulfilled, one of the at least one start criterion is that a remote control switch means allows the starting of the engine through the remote control unit.
  • a remote control switch means allows the starting of the engine through the remote control unit.
  • the method comprises the step of sending a start confirmation signal from the remote control unit to a control unit for the engine when the physical contact with the activation means is released.
  • the method comprises the step of substantially continuously send a signal from the remote control unit as long as the activation means is affected.
  • the control unit may sense that the operator of the remote control unit has released the physical contact with the activation means when the signal from the remote control unit ends.
  • the predetermined time may be between 0.1-6.0 seconds, for example 1 second.
  • the method may also comprise the step of activating at least one light emitting means immediately after the predetermined time has passed if there still is physical contact with the activation means at the predetermined time.
  • the visual indication from the light emitting means makes it easier for the operator to feel safe when starting the engine in a noisy environment and/or at a longer distance from the vehicle.
  • the invention also relates to a computer program for starting an engine and stopping the engine after the engine has started, comprising computer readable program code means for adapting a control unit to receive a signal generated by affecting an activation means of a remote control unit, the signal indicating a desire to start the engine; computer readable program code means for causing the control unit to initiate starting of the engine after the signal has been received; computer readable program code means for causing the control unit to determine when the engine is started or receive information that the engine is started; and computer readable program code means for causing the control unit to initiate stopping of the engine, if the activation means has been released before a predetermined time has passed after the engine has started.
  • the initiation shall throughout the description and claims be defined as direct or indirect through another control device ordering a start of the engine.
  • the computer program may comprise computer readable program code means for stopping the starting of the engine if the engine has not been started before a time limit after the starting of the engine has begun.
  • the computer program may comprise computer readable program code means for causing the control unit to check if all of at least one start criterion is fulfilled for the starting of the engine, and computer readable program code means for causing the control unit to only allow the starting of the engine if all of the at least one start criterion is fulfilled, one of the at least one start criterion being that a remote control switch means is in a position where the starting of the engine through the remote control unit is allowed.
  • the computer program comprises computer readable program code means for adapting the control unit to receive a start confirmation signal from the remote control unit for confirming that the engine, if running, should continue to run.
  • the computer program may also comprise computer readable program code means for causing the control unit (8) to transmit an indication signal immediately after the predetermined time has passed if there still is physical contact with the activation means, the indication signal initiating an activation of at least one light emitting means immediately after the predetermined time has passed.
  • the invention relates to a computer program product comprising a computer usable medium and the computer program, wherein the computer program is comprised in the computer usable medium.
  • control unit adapted to initiate starting of an engine and stopping the engine after the engine has started, comprising a processing means, a storing means, the computer program comprised in the storing means and means for direct or indirect communication with a starter motor for the engine, the engine and a remote control unit.
  • Fig. 1 illustrates transmission of a start signal from a remote control unit to a vehicle
  • Fig. 2 schematically shows a system according to the invention
  • Fig. 3 schematically shows a control unit
  • Fig. 4 is a flow diagram of a first aspect of a method according to the invention
  • Fig. 5 is a flow diagram of a second aspect of the method according to the invention.
  • Fig. 1 schematically shows a vehicle 1 in the form of a truck and a remote control unit 2 associated with the vehicle 1.
  • the remote control unit 2 comprises an activation means 3 in the form of a spring loaded push button.
  • a signal is generated and inputted into a transmitter circuit 4 for generating a signal, here in the form of a radio signal, radiated from an antenna 5 in the remote control unit 2.
  • the signal is transmitted as long as the activation means 3 is depressed, against the force of a spring element (not shown).
  • the signal ends as soon as the push button is returned to its position of rest.
  • the signal may be a continuous or pulsated radio wave.
  • signals emitted from the remote control unit 2 may of course be transmitted to the vehicle 1 in the form of another kind of wirelessly transmitted signals, such as infra-red signals, or as electrical signals through a wire connected to the vehicle 1.
  • the signal is shorter and substantially only sent at the moment when the push button first is depressed.
  • the remote control unit 2 transmits a start confirmation signal.
  • the remote control unit comprises a first timing circuit 6.
  • the remote control unit 2 is able to first send a signal in the moment when the push button is depressed and also a confirmation signal after a certain predetermined time provided that the push button still is depressed at the predetermined time.
  • the remote control unit 2 lacks the antenna 5 since the antenna 5 is not needed.
  • the embodiment shown in the Fig. 1 also comprises a hght emitting means 30, e.g. in the form of a diod or a bulb.
  • the light emitting means 30 is adapted to emit visible light after the predetermined time provided that the push button still is depressed at the predetermined time.
  • Fig. 2 shows a system installed in the vehicle 1 for achieving the effects of the invention.
  • the shown system is applicable to the first, second and third embodiment described above.
  • a receiver unit 7 comprising an antenna and a decoder is connected to a control unit 8, which also is connected to an electronic engine control unit 9 and a light control unit 32 via a CAN (Control Area Network) Bus 10.
  • the engine control unit 9 controls an internal combustion engine 11 and an associated electric starter motor 12.
  • the starting of an engine with the help of a starter motor and an electronic engine control unit is as such known in the art and will therefore not be described in more detail. Any conventional engine starting method for combustion engines in vehicles may be used in combination with the invention.
  • the light control unit 32 controls at least some vehicle exterior light emitting means, such as flashers, warning lights and the main lights of the vehicle 1.
  • vehicle exterior light emitting means are here only illustrated with reference sign 34.
  • the control unit 8 is also connected to an engine revolution sensor 13 (engine speed counter), a neutral gear sensor 14, a parking brake sensor 15, a stop switch means 16 preferably on the outside of the vehicle 1 and a remote control switch means 17 in the cab (not shown) of the vehicle 1.
  • the stop switch means 16 may be e.g. a button or lever switch with two positions; a first position that stops a running engine or prevents the engine 11 to be started and a second position for allowing the engine 11 to start and run.
  • the remote control switch means 17 may also be a button, a toggle switch or a lever switch with two positions, where a first position allows the engine 11 to be started and stopped through the remote control unit 2 and a second position which prevents attempts to start and stop the engine 11 through the remote control unit 2.
  • the remote control unit 2 is connected to the vehicle 1 through a signal wire (not shown)
  • the receiver unit 7 is not needed. Instead the remote control unit 2 may be connected directly to the control unit 8.
  • Fig. 3 schematically illustrates the control unit 8, which comprises a processing means 18 in the form of a CPU (Central Processing Unit) connected to a first port 191 via a first bus 201 for communication with the engine control unit 9 and the light control unit 32, a second port 192 via a second bus 202 for communication with the receiver unit 7, and a third port 193 via a third bus 203 for receiving signals from the sensors 13-15 and switch means 16-17 .
  • the CPU is also connected to a storing means 21, such as a hard disk, a flash memory, a ROM (Read-only memory) or any other computer readable computer program product, via a fourth bus 204.
  • a processing means 18 in the form of a CPU (Central Processing Unit) connected to a first port 191 via a first bus 201 for communication with the engine control unit 9 and the light control unit 32, a second port 192 via a second bus 202 for communication with the receiver unit 7, and a third port 193 via a third bus 203 for receiving signals from the sensors 13
  • a computer program comprises a criteria checking program module 22, an engine speed monitoring program module 23, a time checking module 24, a module 25 for detecting incoming decoded signals from the receiver unit 7 and communication interface program modules 26 for causing the control unit 8 to communicate with the engine control unit 9 and the light control unit 32 and receiving information from the receiver unit 7, the sensors 13-15, the stop switch means 16 and the remote control switch means 17.
  • the computer program comprises a module 27 for detecting incoming decoded start confirmation signals from the receiver unit.
  • the modules, i.e. parts, of the computer program may in an alternative embodiment be separate computer programs interacting with each other and stored in different storing means in or outside the control unit 8 and/or the engine control unit 9.
  • the second port 192 and the second bus 202 are used for receiving signals directly from the remote control unit 2 through a signal wire.
  • a first aspect of the method according to the invention will now be described in conjunction with Fig. 4.
  • the push button is pushed in order to start the engine 11 through the remote control unit 2.
  • a signal is thereby sent from the remote control unit 2. This is done in a first step SI.
  • a second step S2 the signal is received by the receiver unit 7, which decodes the signal and sends the decoded signal to the control unit 8.
  • the module for detecting the incoming decoded signal comprises a program loop for frequent and regular determination of whether a decoded signal is sent from the receiver unit 7. This means that the control unit 8 detects when a received decoded signal ends.
  • the control unit 8 receives the decoded signal and checks whether or not predetermined start criteria for starting the engine 11 are fulfilled.
  • Start criteria for starting the engine 11 through the remote control unit 2 may be that the engine speed is zero, a gearbox (not shown) in the vehicle 1 is in its neutral position, a parking brake (not shown) of the vehicle 1 is applied, the stop switch means 16 allows the engine 11 to be started and/or that the remote control switch means 17 allows starting of the engine 11 through the remote control unit 2.
  • the control unit 8 receives information from the engine revolution sensor 13 about the engine speed, i.e. a value of the instantaneous revolutions per minute performed by the engine 11.
  • the neutral gear sensor 14 produces a signal to the control unit 8 according to the position of a gear lever (not shown) of the vehicle 1, the signal being indicative of whether or not the gear lever is in the neutral position.
  • the parking brake sensor 15 may produce a signal indicative of whether or not the parking brake is applied.
  • the decoded signal is ignored and the method continues to step S4, where warning signals are emitted from e.g. warning lights on the vehicle, a horn and/or loudspeakers in the vehicle 1. A person who tries to start the engine 11 through the remote control unit 2 is thereby easily informed that the engine 11 is not allowed to be started.
  • step S4 the method returns to step S2, where it is checked if the signal from the remote control unit 2 still is received or if the signal has ended. As long as the decoded signal is received and any one of the start criteria is not fulfilled, the steps S2, S3 and S4 will be repeated as a loop. If it is determined in step S2 that the decoded signal has ended, the method ends.
  • step S5 the control unit 8 initiates the start of the engine 11 by sending a start request signal to the engine control unit 9, which attempts to start the engine 11 with the help of the electrical starter motor 12.
  • step S6 The time when the engine 11 starts is defined as the moment when the engine 11 speed has reached a predetermined speed (e.g. revolutions/minute).
  • the instantaneous speed is monitored through the engine revolution sensor 13 and the engine speed monitoring program module 23 in the control unit 8. If the decoded signal ends before the time when the engine 11 has reached the predetermined speed, the starting procedure is stopped; else the method continues with a seventh step S7.
  • a time limit for example 20 seconds, is set for trying to start the engine 11.
  • step S7 it is determined if the time limit has been reached without achieving a successful starting of the engine 11. This is done with the help of the time checking program module 25. If the answer is "Yes”, i.e. the attempt to start the engine before the time limit has failed, the starting attempt is stopped. Hence discharge of a vehicle battery may be avoided automatically. If the engine 11 starts before the time limit, i.e. if the answer is "No", the method continues with an eighth step S8.
  • step S8 it is checked if the engine has started. If not, the method returns to step S7. If the engine has started, i.e. reached the predetermined speed, the method continues with a ninth step S9 provided that the decoded signal is still received by the control unit 2.
  • the control unit 8 immediately after the engine has reached the predetermined speed, the control unit 8, through e.g. a timing circuit in the CPU, starts to count the time.
  • the module 25 for detecting incoming decoded signals from the receiver unit 7 also causes the control unit 8 to check whether the decoded signal is still being received during a predetermined time, for example 4 seconds, after the engine 11 has started.
  • the control unit 8 If the decoded signal is still received by the control unit 8 when the timing circuit has counted up to the predetermined time, the engine 11 is allowed to run although the push button is released after the predetermined time. Also, if the predetermined time has passed, the control unit 8 sends an indication signal to the light control unit 32, which upon receiving of the indication signal turn on at least some of the lights 34, such as the flashers, to show the operator that the engine has been started successfully and that the push button can be released without affecting the engine. If the decoded signal ends before the predetermined time, the control unit 8 sends a stop signal to the engine control unit 9, which upon reception of the stop signal stops the engine 11.
  • a first step SI 1 of a second aspect of the method according to the invention see Fig. 5, the remote control unit 2 sends a signal to the receiver unit 7 when the push button is depressed.
  • this signal is not a continuously transmitted or pulsed signal during a relatively long period as in the first aspect. This signal ends substantially as soon as e.g. identification data associated with the remote control unit 2 for authorisation and authentication and data requesting start of the engine 11 have been sent.
  • a second step S12 of the second aspect the signal is received by the control unit 8 through the receiver unit 7.
  • the second aspect continues with a third step SI 3, which corresponds to the third step S3 of the first aspect.
  • the start is not OK, i.e. at least one of the start criteria is not fulfilled
  • the method continues with a fourth step S14, which corresponds to the fourth step S4 of the first aspect.
  • step S14 the method ends.
  • a fifth step S15 follows, in which the control unit 8 sends a start request signal to the engine control unit 9, which attempts to start the engine 11 with the help of the electric starter motor 12. Also, the timing circuit in the CPU starts to count the time.
  • the remote control unit 2 sends a start confirmation signal to the receiver unit 7, which decodes the start confirmation signal and forwards it to the control unit 8, where the module 27 for detecting incoming decoded start confirmation signals causes the control unit 8 to detect the incoming confirmation signal from the remote control unit 7.
  • the time from the initiation of the starting in step S 15 to the reception of the start confirmation signal is registered with the help of the timing circuit in the CPU and time checking program module 24.
  • step S16 the control unit 8 checks for a received decoded start confirmation signal. The method continues with a seventh step S17, if such a signal has not been received. If the start confirmation signal has been received, the method continues with an eighth step S 18.
  • step S 17 the time that has passed since the initiation of the starting, is compared with a time limit, which corresponds to the time limit of the first aspect. If the time limit has been reached, the control unit 8 sends a stop signal to the engine control unit 9 for stopping the starting of the engine 11. If the time limit has not been reached, the method returns to step SI 6.
  • step SI 8 it is checked whether the engine 11 has started or not. If the engine has not started, the control unit sends a stop signal to the engine control unit 9 for stopping the starting of the engine 11. If the engine has started, the method continues with a ninth step S19, in which the time from the initiation of the starting to the receiving of the start confirmation signal is compared with a predetermined time. This comparison is conducted with the help of the time checking program module 24. If the predetermined time is longer than the other time, the push button is considered as being released too early and the control unit 8 sends a stop signal to the engine control unit 9 for stopping the running engine 11. If the time from the initiation of the starting to the receiving of the start confirmation signal is longer than the predetermined time, the starting of the engine 11 is considered as confirmed and the engine 11 is allowed to continue to run.
  • the remote control unit 2 is able to first send a signal for starting the engine 11 and after a certain predetermined time send a confirmation signal provided that the push button still is depressed at the predetermined time.
  • This predetermined time corresponds to the predetermined time for the other two disclosed aspects above.
  • the start confirmation signal is received, it is checked if the engine 11 has started. If not, the timing circuit in the CPU starts to count up to a time limit corresponding to the time limit of the two other aspects disclosed above. When the time limit has passed and the engine 11 has still not started, the attempt to start the engine is stopped. If the engine 11 is running when the start confirmation signal is received by the vehicle 1, the start of the engine 11 is considered as being confirmed by the operator of the remote control unit 2.
  • the remote control unit 2 sends a stop signal to the engine control unit 9 for stopping the starting or running of the engine 11, depending on whether the engine 11 has been defined as started or not.
  • the predetermined time may be a user adjustable parameter in order to suit different work situations, vehicles and personal preferences. Typically the predetermined time may be set to any value between 0.0-6 seconds, e.g. 1 second.
  • the first timing circuit 6 may count up the time until the predetermined time, provided that the push button is depressed the whole time. As the predetermined time is passed, the light emitting means 30 is turned on to show that the push button can be released.
  • the invention is not limited to starting and stopping of combustion engines, but may be utilised for e.g. electric motors and gas turbine engines for vehicles as well.
  • the activation means may of course be any kind of means that could be affected by a person, e.g. a touch sensitive pad, a toggle switch or a lever switch.
  • the computer program may be installed in the engine control unit 9 and the receiver unit 7 may be connected directly to the engine control unit 9, thus avoiding the need for a separate control unit 8 for managing the method according to the invention.
  • other criteria for defining the actual start of the engine 11 may be used instead of or in addition to the predetermined engine speed.
  • An example of such a criterion is that a second predetermined time has passed after the initiation of a starting attempt. The second predetermined time may be dependent on the engine temperature at the moment of the initiation of the starting attempt.

Abstract

L'invention concerne un procédé permettant de faire démarrer un moteur (11) et d'arrêter ce moteur une fois en marche. Ce procédé comprend les étapes consistant à : faire démarrer un moteur en influant sur un moyen d'activation (3) d'une unité de télécommande (2) (par exemple en le pressant ou en le touchant) ; rester en contact physique avec ce moyen d'activation une fois le moteur en marche ; et arrêter ce moteur en relâchant le contact physique avec le moyen d'activation avant qu'un laps de temps prédéterminé soit écoulé une fois le moteur en marche. L'invention se rapporte en outre à une unité de commande (9) ainsi qu'à un programme informatique stocké dans cette unité de commande.
PCT/SE2003/000214 2002-03-15 2003-02-10 Telecommande WO2003078194A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP03703627A EP1487657B1 (fr) 2002-03-15 2003-02-10 Telecommande
AU2003206334A AU2003206334A1 (en) 2002-03-15 2003-02-10 Remote control
DE60303920T DE60303920T2 (de) 2002-03-15 2003-02-10 Fernsteuerung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0200793A SE521421C2 (sv) 2002-03-15 2002-03-15 Fjärrstyrning
SE0200793-8 2002-03-15

Publications (1)

Publication Number Publication Date
WO2003078194A1 true WO2003078194A1 (fr) 2003-09-25

Family

ID=20287282

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2003/000214 WO2003078194A1 (fr) 2002-03-15 2003-02-10 Telecommande

Country Status (6)

Country Link
EP (1) EP1487657B1 (fr)
AT (1) ATE319587T1 (fr)
AU (1) AU2003206334A1 (fr)
DE (1) DE60303920T2 (fr)
SE (1) SE521421C2 (fr)
WO (1) WO2003078194A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006125872A1 (fr) * 2005-05-26 2006-11-30 Renault Trucks Procede de commande de l'alimentation d'un demarreur electrique
TWI419559B (zh) * 2008-12-08 2013-12-11 Echostar Technologies Llc 娛樂系統重新組態之系統及方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013001019A1 (de) * 2013-01-22 2014-07-24 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Verfahren zum Auslösen eines Warnsignals bei einem Fehlverhalten beim Betrieb eines Kraftfahrzeugs
JP7153595B2 (ja) * 2019-03-26 2022-10-14 日立建機株式会社 建設機械

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5673017A (en) * 1993-09-02 1997-09-30 Astroflex Inc. Remote vehicle starting system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5673017A (en) * 1993-09-02 1997-09-30 Astroflex Inc. Remote vehicle starting system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006125872A1 (fr) * 2005-05-26 2006-11-30 Renault Trucks Procede de commande de l'alimentation d'un demarreur electrique
US7948099B2 (en) 2005-05-26 2011-05-24 Renault Trucks Method of controlling power supply to an electric starter
TWI419559B (zh) * 2008-12-08 2013-12-11 Echostar Technologies Llc 娛樂系統重新組態之系統及方法

Also Published As

Publication number Publication date
ATE319587T1 (de) 2006-03-15
AU2003206334A1 (en) 2003-09-29
SE0200793L (sv) 2003-09-16
SE521421C2 (sv) 2003-10-28
EP1487657B1 (fr) 2006-03-08
SE0200793D0 (sv) 2002-03-15
DE60303920D1 (de) 2006-05-04
EP1487657A1 (fr) 2004-12-22
DE60303920T2 (de) 2006-11-30

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