WO2022208542A1 - Système et procédé de commande du fonctionnement d'un moteur - Google Patents

Système et procédé de commande du fonctionnement d'un moteur Download PDF

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Publication number
WO2022208542A1
WO2022208542A1 PCT/IN2022/050311 IN2022050311W WO2022208542A1 WO 2022208542 A1 WO2022208542 A1 WO 2022208542A1 IN 2022050311 W IN2022050311 W IN 2022050311W WO 2022208542 A1 WO2022208542 A1 WO 2022208542A1
Authority
WO
WIPO (PCT)
Prior art keywords
engine
vehicle
controller
throttle
predetermined
Prior art date
Application number
PCT/IN2022/050311
Other languages
English (en)
Inventor
Janarth RAMASAMY VIJAYA VELUSAMY
Raghavendra Prasad
Sethu CHANDRASEKARAN
Rajaram Sagare DATTA
Babu Rengarajan
Original Assignee
Tvs Motor Company Limited
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 Tvs Motor Company Limited filed Critical Tvs Motor Company Limited
Publication of WO2022208542A1 publication Critical patent/WO2022208542A1/fr

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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
    • F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
    • F02N11/0818—Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode
    • 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
    • F02N11/04—Starting of engines by means of electric motors the motors being associated with current generators
    • 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
    • F02N2200/00—Parameters used for control of starting apparatus
    • F02N2200/02—Parameters used for control of starting apparatus said parameters being related to the engine
    • F02N2200/022—Engine speed
    • 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
    • F02N2200/00—Parameters used for control of starting apparatus
    • F02N2200/02—Parameters used for control of starting apparatus said parameters being related to the engine
    • F02N2200/023—Engine temperature
    • 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
    • F02N2200/00—Parameters used for control of starting apparatus
    • F02N2200/08—Parameters used for control of starting apparatus said parameters being related to the vehicle or its components
    • F02N2200/0801—Vehicle speed
    • 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
    • F02N2200/00—Parameters used for control of starting apparatus
    • F02N2200/08—Parameters used for control of starting apparatus said parameters being related to the vehicle or its components
    • F02N2200/0802—Transmission state, e.g. gear ratio or neutral state
    • 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
    • F02N2200/00—Parameters used for control of starting apparatus
    • F02N2200/10—Parameters used for control of starting apparatus said parameters being related to driver demands or status
    • F02N2200/101—Accelerator pedal position
    • 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
    • F02N2200/00—Parameters used for control of starting apparatus
    • F02N2200/10—Parameters used for control of starting apparatus said parameters being related to driver demands or status
    • F02N2200/103—Clutch pedal position
    • 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
    • F02N2200/00—Parameters used for control of starting apparatus
    • F02N2200/14—Parameters used for control of starting apparatus said parameter being related to wear of starter or other components, e.g. based on total number of starts or age
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Definitions

  • the present subject matter relates to a system and method to control operation of an engine. More particularly but not exclusively, a system and method to control operation of an engine based on inputs from plurality of sensors to prevent safety risk by avoiding unintended start of the engine during a vehicle operation thereby making the vehicle more consumer friendly.
  • Figure 1 depicts a side view of an exemplary two-wheeled vehicle, in accordance with an embodiment of the present subject matter.
  • Figure 2 illustrates a block diagram explaining the interface of a controller (103) with different vehicular components according to an aspect of the present subject-matter.
  • Figure 3a and Figure 3b illustrates a flow chart to determine the controller logic to perform vehicle start-stop function according to an aspect of the present subject-matter.
  • Figure 4 illustrates a flow chart for throttle blip according to an aspect of the present subject-matter.
  • Figure 5 illustrates a method of controlling the engine for vehicle start and stop option according to an aspect of the present invention.
  • present invention discloses a vehicle employing a controller to determine the state of the engine and based on the determination, the controller will start and stop the vehicle efficiently without any safety risk to the user and the bystander.
  • the vehicle is configured with an integrated starter generator (ISG).
  • ISG integrated starter-generator
  • the integrated starter-generator (ISG) replaces both the conventional starter and alternator (generator) of an automobile in a single electric device. It allows greater electrical generation capacity and the fuel economy and emissions benefits of hybrid electric automotive propulsion.
  • ISG controller in a vehicle controls the ISG machine between motoring and generating modes, charging the battery and also facilitates the Idle Start Stop feature.
  • ISG controller is communicatively connected to the engine management system (EMS) controller to receive various vehicle related inputs such as vehicle speed, throttle opening position, engine speed, battery voltage, vehicle riding pattern, engine temperature, clutch signal, brake signal, neutral signal, etc.
  • EMS engine management system
  • ISG controller performs idle stop once the predetermined stop conditions are met and performs idle start once it receives throttle input and/or clutch input.
  • ISG controller determine cranking of engine through a crank position sensor and the engine rpm through the speed sensor, based on the inputs the ISG controller stops the engine or kills the engine. Further, ISG controller disables Idle start stop (ISS) feature when the vehicle is stopped in ISS stop for more than a predetermined time period. In addition to this ISG controller disables the ISS feature even when certain malfunctions are identified.
  • ISS Idle start stop
  • stop-start feature is used to automatically shut down and restart the internal combustion engine to reduce the amount of time the engine spends idling, thereby reducing emission and fuel consumption.
  • the Integrated Starter Generator system (ISG) in a vehicle majorly comprises of ISG machine and ISG controller.
  • the said ISG controller controls the ISG machine and performs the Idle Start Stop (ISS) function.
  • ISG controller being provided with various vehicle inputs, performs the idle stop start as per the predefined logic.
  • the vehicle After satisfying the predetermined conditions the vehicle will enter into ISS mode and waits for the vehicle to satisfy all of its ISS stop conditions.
  • the predetermined conditions are set of enabling conditions for ISS mode based on engine speed, engine temperature, distance travelled by said vehicle from last engine run to halt, transmission state of said vehicle, said one or more controller checking any system failure etc.
  • any illuminating source such as lamp, LED, bulb etc. is provided on the vehicle which will start glowing thereby informing the user that the vehicle is in ISS mode.
  • One or more controller will further check for one or more primary engine parameters which if met, the engine will be stopped due to ISS module provided within one or more controller and the illuminating source will start blinking at a predetermined frequency.
  • the blinking illuminating source here signifies that the vehicle is stopped due to ISS Stop module. If the vehicle stays in ISS Stop mode more than a predetermined time duration, the illuminating source will glow consistently without blinking. It is proposed to perform ISS restart mode after an ISS stop mode with the help of clutch and/or throttle signals.
  • ISS restart mode after an ISS stop mode may be performed with the help of brake and/or throttle signals.
  • one or more primary engine parameters being based on an engine speed, an engine temperature, a distance travelled by said vehicle from last engine run to halt when said vehicle not being in motion for predefined time period, a transmission state of said vehicle, said clutch and said throttle being actuated manually etc.
  • Manual Clutch and/or manual throttle inputs by a vehicle user are communicatively connected to the ISG controller through a clutch sensor and/or throttle positioning sensor respectively.
  • the ISG controller will continuously check for both clutch and throttle signals which demonstrates a blip i.e., throttle sensor output value raises above a predetermined upper threshold value and falls below a predetermined lower threshold value within a predefined time wherein difference between the predetermined upper threshold value and the predetermined lower threshold value is in range of 4% to 10%.
  • a throttle valve is being closed and opened through a throttle grip provided on the handlebar assembly which is manually rotated by the user so that the throttle valve opens above a predetermined upper threshold value and closed below a predetermined lower threshold value.
  • Providing manual clutch and throttle blip prevents the sudden launch of the vehicle.
  • the value of the throttle is first raised beyond a predetermined threshold value and bringing it down below a predetermined lower threshold value will ensure that the vehicle smoothly comes into motion and there is no sudden start of the vehicle which can be dangerous for both vehicle user and bystander.
  • brake and/or throttle are communicatively connected to the ISG controller through a brake sensor and/or throttle positioning sensor respectively.
  • ISS feature i.e., stopping the vehicle and starting the vehicle automatically during vehicle idling is performed by the ISG controller. ISG controller is also responsible for controlling the starting and charging system of the vehicle. ISS feature helps in reducing fuel consumption and in decreasing emission. This stop and start system work on the basis of the predefined logic for both ISS stop mode and ISS start mode.
  • the ISG controller will wait for the Clutch and throttle blip inputs.
  • the inputs are provided to the ISG controller through any communication protocol. With the help of these inputs ISG controller will automatically start the engine from ISS stop condition. When the inputs are not available for a predetermined duration, then the ISG controller will come out of the ISS mode and the user can start the vehicle using other starting means which are ignition key reset, electric start or attempting a kick start.
  • the vehicle should be at rest for the ISG controller to perform ISS restart function.
  • Vehicle being at rest means that the vehicle speed and the engine rpm both are zero and the vehicle is not in motion or not being dragged without switching on the ignition key by the user of the vehicle.
  • the ISG controller has a counter to count the number of failed starts if the failed start counter exceeds the predetermined count, then ISS start will be prohibited.
  • the counter provided in the system may or may not be an inbuilt feature of ISG controller. The usage oftwo signals i.e., clutch and/or throttle blip will help in avoiding unintentional ISS restart.
  • clutch signal and throttle blip signal when the vehicle is in gear, clutch signal and throttle blip signal will help the user to re-start the engine but when the vehicle is in neutral, either one will suffice i.e., the engine can be re started by providing clutch signal or just by providing a throttle signal.
  • Clutch and throttle blip will help in providing the costumer a safe engine restart.
  • FIG. 1 depicts a front perspective view of an exemplary two-wheeled vehicle (100), in accordance with an embodiment of the present subject matter with few parts of the vehicle omitted for clarity.
  • the vehicle (100) has an integrated starter generator (ISG).
  • ISG integrated starter-generator
  • the integrated starter-generator (ISG) replaces both the conventional starter and alternator (generator) of an automobile in a single electric device.
  • ISG controller (103) in a vehicle controls the ISG machine between motoring and generating modes, charging the battery and also facilitates the Idle Start Stop feature.
  • ISG controller (103) is communicatively connected to the engine management system (EMS) controller (201) to receive various vehicle related inputs such as vehicle speed, throttle opening position, engine speed, battery voltage, vehicle riding pattern, engine temperature, clutch signal, brake signal, neutral signal, etc.
  • EMS engine management system
  • ISG controller (103) performs idle stop once predetermined conditions and one or more primary engine parameters are met and performs idle start once it receives throttle input from throttle position sensor (102) and/or clutch input from clutch sensor (101). Further, one or more predetermined conditions being based on an engine speed, an engine temperature, a distance travelled by said vehicle from last engine run to halt, transmission state of said vehicle, said one or more controller checking any system failure etc.
  • said one or more primary engine parameters being based on an engine speed, an engine temperature, a distance travelled by said vehicle from last engine run to halt, said vehicle not being in motion for predefined time period, transmission state of said vehicle, said clutch and said throttle being actuated manually etc.
  • FIG. 2 illustrates a block diagram explaining the interface of a controller (103) with different vehicular components.
  • a handlebar assembly (105) comprises of the throttle position sensor (102) and a clutch sensor (101).
  • Controller (103) is communicatively connected to the engine management system (EMS) controller (201) to receive various vehicle (100) related inputs such as vehicle (100) speed, throttle opening position, engine speed, battery voltage, vehicle (100) riding pattern, engine temperature, clutch signal, brake signal, neutral signal, etc. With the help of these inputs, controller (103) performs idle stop once the predetermined stop conditions are met and performs idle start once it receives throttle input (102) and/or clutch input (101).
  • EMS engine management system
  • Predetermined conditions can be analysed with the help of variety of sensors including engine temperature sensor (203), crank position sensor (204), speed sensor (206), gear sensor (205).
  • the controller (103) will perform the start stop function with the help of starter generator (202).
  • controller (103) may determine cranking of engine through a crank position sensor (204) and the engine rpm through the speed sensor (206), controller (103) stops the engine (104) or kills the engine (104).
  • controller (103) disables Idle start stop (ISS) module when the engine (104) is stopped in ISS stop for more than a predetermined time period. In addition to this controller (103) disables the ISS module even when certain malfunctions are identified.
  • FIG. 3a and figure 3b illustrates a flow chart to determine the controller logic to perform vehicle start-stop function.
  • the controller determines if the ignition start stop (ISS) conditions which are set of pre-determined conditions, provided by the manufacturer, are met (step 302).
  • ISS ignition start stop
  • the vehicle will go in ISS mode which will be indicated through an ISS lamp or any other illuminating source (step 303).
  • the controller checks if ISS stop condition are satisfied (step 304).
  • ISS stop conditions are satisfied if one or more primary engine parameters are satisfied. If the conditions are satisfied, the engine is stopped (step 305).
  • step 306 This will be indicated by blinking of the ISS lamp or any other illuminating source at a particular frequency (step 306).
  • the controller will determine if the vehicle is at rest condition (step 307). Further, a manual throttle and/or manual clutch transmission is provided by the user and if the system fails to restart the vehicle, a counter will be updated. If the value of counter is less than predetermined value (step 308) then clutch and/or throttle blip inputs are checked again (step 309). If the value of counter is more than predetermined value (step 308) then the controller will disable ISS module (step 311). If the value of clutch and/or throttle blip is “1” then engine will start through ISS (step 313).
  • Failed start counter is updated if engine is not starting (step 314) and the controller will return to run commands from step 302. If the clutch and throttle blip is “0”, and the manual throttle and/or clutch is not provided by the user within a pre-determined time (step 310) then the controller will disable ISS module (step 311). After, ISS module being disabled by the controller, the user has to manually start the vehicle by resetting the ignition key, by electric start switch or by kick start (step 312). The entire logic will again start from the top as soon as vehicle is re-started.
  • FIG. 4 illustrates a flow chart for throttle blip.
  • the throttle position sensor will check if the throttle is actuated manually and if it is actuated manually, “1” value will be sent to the controller signifying the actuation of manual throttle else “0” value will be sent (step 402).
  • a throttle blip will be initiated (step 403).
  • an opening of throttle valve will be checked by the controller, if the opening of throttle valve has crossed predetermined upper threshold value “x”. If the value has not crossed the predetermined upper threshold value, the controller will get a “0” value.
  • the controller will check if closing of throttle valve is below the lower threshold value “y”.
  • the controller will analyse the throttle value raising above the upper threshold value and falling below the lower threshold value in a pre-determined time duration. If this process is followed successfully, throttle blip will be “1”, otherwise it will be “0”.
  • Figure 5 illustrates a method of controlling the engine for vehicle start and stop option.
  • the controller will detect an engine operating mode based on pre-determined conditions and one or more primary engine parameters wherein the engine operating mode includes idle stop and idle start mode.
  • the controller will check the one or more primary engine parameters to analyse if idle start stop feature provided in the vehicle should be initiated (step 501).
  • the controller is communicatively connected to the engine management system (EMS) controller to receive various vehicle related inputs such as vehicle speed, throttle opening position, engine speed, battery voltage, vehicle riding pattern, engine temperature, clutch signal, brake signal, neutral signal, etc. With the help of one or more of these inputs, the controller performs idle stop once the predetermined stop conditions are met.
  • EMS engine management system
  • controller determines cranking of engine through a crank position sensor and/or the engine rpm through the speed sensor, based on the inputs the controller stops the engine or kills the engine (step 502).
  • the controller will check if the vehicle is in rest position and is stationary. If so, the controller checks one or more secondary engine parameters and based on the one or more secondary engine parameters, the controller will decide to restart the vehicle.
  • the one or more secondary parameters are throttle input and/or clutch input or throttle input and/or brake input that is provided through manual transmission by the user (step 503).

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Abstract

La présente invention concerne un système stop/start intégré (ISS) pour redémarrer le fonctionnement du moteur d'un véhicule (100) comprenant un ou plusieurs dispositifs de commande (103) ayant un module stop/start au ralenti, un capteur de position de papillon (102) étant configuré pour détecter une opération d'un papillon manuel dudit véhicule (100) ; un capteur d'actionnement d'embrayage (101) étant configuré pour détecter une opération d'un embrayage manuel dudit véhicule (100), ledit ou lesdits dispositifs de commande (103) étant configurés pour vérifier un ou plusieurs paramètres de moteur secondaires et aptes à redémarrer ledit moteur (104) sur la base du fait que ledit ou lesdits paramètres de moteur secondaires satisfont une ou des conditions prédéterminées de chacun desdits un ou plusieurs paramètres de moteur secondaires.
PCT/IN2022/050311 2021-03-31 2022-03-28 Système et procédé de commande du fonctionnement d'un moteur WO2022208542A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN202141015478 2021-03-31
IN202141015478 2021-03-31

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Publication Number Publication Date
WO2022208542A1 true WO2022208542A1 (fr) 2022-10-06

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2431600A1 (fr) * 2010-07-29 2012-03-21 Kwang Yang Motor Co., Ltd. Système et procédé de contrôle de commande d'arrêt en position de ralenti du moteur à combustion
EP2799834A1 (fr) * 2011-12-28 2014-11-05 Honda Motor Co., Ltd. Système ainsi que procédé de diagnostic de véhicule, et véhicule
JP5750020B2 (ja) * 2011-09-29 2015-07-15 本田技研工業株式会社 自動二輪車
CN110462185A (zh) * 2017-03-28 2019-11-15 Tvs电机股份有限公司 一种两轮车怠速启停系统

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2431600A1 (fr) * 2010-07-29 2012-03-21 Kwang Yang Motor Co., Ltd. Système et procédé de contrôle de commande d'arrêt en position de ralenti du moteur à combustion
JP5750020B2 (ja) * 2011-09-29 2015-07-15 本田技研工業株式会社 自動二輪車
EP2799834A1 (fr) * 2011-12-28 2014-11-05 Honda Motor Co., Ltd. Système ainsi que procédé de diagnostic de véhicule, et véhicule
CN110462185A (zh) * 2017-03-28 2019-11-15 Tvs电机股份有限公司 一种两轮车怠速启停系统

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