JP7192217B2 - Drive force controller - Google Patents

Drive force controller Download PDF

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JP7192217B2
JP7192217B2 JP2018034487A JP2018034487A JP7192217B2 JP 7192217 B2 JP7192217 B2 JP 7192217B2 JP 2018034487 A JP2018034487 A JP 2018034487A JP 2018034487 A JP2018034487 A JP 2018034487A JP 7192217 B2 JP7192217 B2 JP 7192217B2
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accelerator opening
vehicle
threshold
accelerator
driving
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JP2019148248A (en
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浩之 後藤
賢一 東
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Suzuki Motor Co Ltd
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Suzuki Motor Co Ltd
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Priority to DE102019202340.1A priority patent/DE102019202340A1/en
Priority to CN201910142940.7A priority patent/CN110203201B/en
Priority to FR1902042A priority patent/FR3078308B1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18Propelling the vehicle
    • B60W30/18009Propelling the vehicle related to particular drive situations
    • B60W30/18036Reversing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18Propelling the vehicle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/08Interaction between the driver and the control system
    • B60W50/10Interpretation of driver requests or demands
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/08Interaction between the driver and the control system
    • B60W50/12Limiting control by the driver depending on vehicle state, e.g. interlocking means for the control input for preventing unsafe operation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/08Interaction between the driver and the control system
    • B60W50/14Means for informing the driver, warning the driver or prompting a driver intervention
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D11/00Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
    • F02D11/06Arrangements 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
    • F02D11/10Arrangements 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
    • F02D11/105Arrangements 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D29/00Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
    • F02D29/02Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/02Circuit arrangements for generating control signals
    • F02D41/021Introducing corrections for particular conditions exterior to the engine
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/02Circuit arrangements for generating control signals
    • F02D41/021Introducing corrections for particular conditions exterior to the engine
    • F02D41/0215Introducing corrections for particular conditions exterior to the engine in relation with elements of the transmission
    • F02D41/0225Introducing corrections for particular conditions exterior to the engine in relation with elements of the transmission in relation with the gear ratio or shift lever position
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W2050/0062Adapting control system settings
    • B60W2050/007Switching between manual and automatic parameter input, and vice versa
    • B60W2050/0071Controller overrides driver automatically
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2520/00Input parameters relating to overall vehicle dynamics
    • B60W2520/04Vehicle stop
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2520/00Input parameters relating to overall vehicle dynamics
    • B60W2520/06Direction of travel
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2540/00Input parameters relating to occupants
    • B60W2540/10Accelerator pedal position
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2540/00Input parameters relating to occupants
    • B60W2540/10Accelerator pedal position
    • B60W2540/106Rate of change
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2540/00Input parameters relating to occupants
    • B60W2540/16Ratio selector position
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00Output or target parameters relating to a particular sub-units
    • B60W2710/06Combustion engines, Gas turbines
    • B60W2710/0666Engine torque
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D2200/00Input parameters for engine control
    • F02D2200/50Input parameters for engine control said parameters being related to the vehicle or its components
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D2200/00Input parameters for engine control
    • F02D2200/50Input parameters for engine control said parameters being related to the vehicle or its components
    • F02D2200/501Vehicle speed
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D2200/00Input parameters for engine control
    • F02D2200/60Input parameters for engine control said parameters being related to the driver demands or status
    • F02D2200/602Pedal position
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/72Electric energy management in electromobility

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Description

本発明は、駆動力制御装置に関する。 The present invention relates to a driving force control device.

自車両が運転者の誤操作によって急発進してしまうことを抑制するために、自車両の駆動トルクを抑制する誤発進抑制制御技術が知られている。このような誤発進抑制制御において、特許文献1のように、自車両と先行車との車間距離や相対速度に応じて、発進抑制作動条件であるアクセルペダルの開度やアクセルペダルの操作速度の閾値を変更する技術が開示されている。 In order to prevent the host vehicle from suddenly starting due to an erroneous operation by the driver, an erroneous start suppression control technology is known that suppresses the drive torque of the host vehicle. In such erroneous start suppression control, as in Patent Document 1, the opening degree of the accelerator pedal and the operation speed of the accelerator pedal, which are the start suppression operation conditions, are changed according to the inter-vehicle distance and relative speed between the own vehicle and the preceding vehicle. A technique for changing the threshold is disclosed.

特開2018-5808号公報JP-A-2018-5808

ところで、このような誤発進抑制制御は、運転者の操作が意図したものであるにもかかわらず誤発進抑制制御が作動してしまうとドライバビリティを損ねる可能性がある一方で、運転者の意図せぬ操作が入力された場合は適切に駆動トルクを抑制する必要がある。 By the way, such erroneous start suppression control may impair drivability if the erroneous start suppression control is activated despite the driver's intention. It is necessary to appropriately suppress the driving torque when an operation that does not perform is input.

そこで、本発明は、ドライバビリティの低下を抑制しつつ誤操作によるトルク出力を抑制することのできる駆動力制御装置を提供することを目的としている。 SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a driving force control device capable of suppressing torque output due to an erroneous operation while suppressing deterioration of drivability.

上記課題を解決するため本発明は、アクセルペダルの操作状態に応じて自車両の駆動トルクの出力を抑制する駆動トルク抑制制御を実行する駆動力制御装置であって、前記アクセルペダルの開度がアクセル開度閾値よりも大きいか、前記アクセルペダルの開度の変化量がアクセル開度変化量閾値よりも大きいかの少なくとも一方を満たす場合に前記駆動トルク抑制制御を実行するトルク制御部と、前記自車両が停止状態にあるか走行中状態にあるかを判定する走行状態判定部と、前記走行状態判定部によって前記自車両が停止状態にあると判定された場合の前記アクセル開度閾値及び前記アクセル開度変化量閾値を、前記自車両が走行中状態にあると判定された場合の前記アクセル開度閾値及び前記アクセル開度変化量閾値よりも大きく設定する条件設定部と、前記アクセルペダルの開度または前記アクセルペダルの開度の変化量の少なくとも一方が警報閾値よりも大きい場合に乗員に警報を出力する警報制御部と、前記警報閾値を前記アクセル開度閾値及び前記アクセル開度変化量閾値よりも、小さい値に設定する警報閾値設定部と、を備え、前記トルク制御部は、前記警報制御部による警報が出力された後、依然として前記アクセルペダルの開度が前記アクセル開度閾値よりも大きい場合、または前記アクセルペダルの開度変化量が前記アクセル開度変化量閾値よりも大きい場合の少なくとも一方が成立するとき前記駆動トルク抑制制御を実行するものである。 In order to solve the above-described problems, the present invention provides a driving force control device that executes a driving torque suppression control that suppresses the output of driving torque of the host vehicle in accordance with the operating state of an accelerator pedal, wherein the opening degree of the accelerator pedal is: a torque control unit that executes the drive torque suppression control when at least one of an accelerator opening threshold value and a change amount of the accelerator pedal opening amount being greater than an accelerator opening change amount threshold value is satisfied; a driving state determination unit that determines whether the host vehicle is in a stopped state or a running state; and the accelerator opening threshold value and the above when the running state determination unit determines that the host vehicle is in the stopped state. a condition setting unit that sets an accelerator opening change amount threshold to be larger than the accelerator opening change amount threshold and the accelerator opening change amount threshold when it is determined that the vehicle is in a running state; an alarm control unit that outputs an alarm to an occupant when at least one of the degree of opening and the amount of change in the degree of opening of the accelerator pedal is greater than an alarm threshold; and a warning threshold value setting unit that sets a value smaller than the threshold value, and the torque control unit is configured such that after the warning is output by the warning control unit, the opening degree of the accelerator pedal is still lower than the accelerator opening threshold value. or the accelerator opening change amount is greater than the accelerator opening change amount threshold value, the driving torque suppression control is executed .

このように、本発明によれば、ドライバビリティの低下を抑制しつつ誤操作によるトルク出力を抑制することができる。 Thus, according to the present invention, it is possible to suppress torque output due to erroneous operation while suppressing deterioration of drivability.

図1は、本発明の一実施例に係る駆動力制御装置のブロック図である。FIG. 1 is a block diagram of a driving force control device according to one embodiment of the present invention. 図2は、本発明の一実施例に係る駆動力制御装置の閾値の設定例を示す図である。FIG. 2 is a diagram showing a setting example of threshold values of the driving force control device according to one embodiment of the present invention. 図3は、本発明の一実施例に係る駆動力制御装置の条件設定処理の手順を示すフローチャートである。FIG. 3 is a flow chart showing the procedure of condition setting processing of the driving force control device according to the embodiment of the present invention. 図4は、本発明の一実施例に係る駆動力制御装置の駆動トルク抑制処理の手順を示すフローチャートである。FIG. 4 is a flow chart showing the procedure of driving torque suppression processing of the driving force control device according to one embodiment of the present invention. 図5は、本発明の一実施例に係る駆動力制御装置の駆動トルク抑制処理によるアクセル開度の変化による警報の出力と駆動トルク抑制制御実行のタイミングを示すタイムチャートである。FIG. 5 is a time chart showing the output of an alarm due to a change in accelerator opening and the timing of execution of driving torque suppression control by the driving torque suppression processing of the driving force control device according to the embodiment of the present invention. 図6は、本発明の一実施例に係る駆動力制御装置の駆動トルク抑制制御継続処理の手順を示すフローチャートである。FIG. 6 is a flow chart showing the procedure of the driving torque suppression control continuation process of the driving force control device according to the embodiment of the present invention. 図7は、本発明の一実施例に係る駆動力制御装置の駆動トルク抑制制御継続処理による駆動トルク抑制制御停止のタイミングを示すタイムチャートである。FIG. 7 is a time chart showing the timing of stopping the driving torque suppression control by the driving torque suppression control continuation process of the driving force control device according to the embodiment of the present invention.

本発明の一実施の形態に係る駆動力制御装置は、アクセルペダルの操作状態に応じて自車両の駆動トルクの出力を抑制する駆動トルク抑制制御を実行する駆動力制御装置であって、少なくともアクセルペダルの開度がアクセル開度閾値よりも大きい場合に駆動トルク抑制制御を実行するトルク制御部と、自車両の進行方向を検出する進行方向検出部と、進行方向検出部によって検出される自車両の進行方向が前進方向であるときのアクセル開度閾値を、自車両の進行方向が後進方向であるときのアクセル開度閾値よりも大きく設定する条件設定部と、を備えた構成をしている。 A driving force control device according to an embodiment of the present invention is a driving force control device that executes a driving torque suppression control that suppresses the output of a driving torque of a host vehicle according to an operation state of an accelerator pedal, and comprises at least an accelerator A torque control unit that executes driving torque suppression control when the opening of the pedal is greater than the accelerator opening threshold, a traveling direction detecting unit that detects the traveling direction of the own vehicle, and the own vehicle detected by the traveling direction detecting unit. and a condition setting unit that sets an accelerator opening threshold when the traveling direction of the vehicle is the forward direction to be larger than the accelerator opening threshold when the traveling direction of the own vehicle is the reverse direction. .

これにより、ドライバビリティの低下を抑制しつつ誤操作によるトルク出力を抑制することができる。 As a result, torque output due to erroneous operation can be suppressed while suppressing deterioration in drivability.

以下、図面を参照して、本発明の実施例に係る駆動力制御装置について詳細に説明する。 Hereinafter, a driving force control device according to an embodiment of the present invention will be described in detail with reference to the drawings.

図1において、本発明の第一実施例に係る駆動力制御装置を搭載した車両1は、エンジン2と、警報装置3と、エンジンECU(Electronic Control Unit)4と、制御部5と、を含んで構成される。 In FIG. 1, a vehicle 1 equipped with a driving force control device according to the first embodiment of the present invention includes an engine 2, an alarm device 3, an engine ECU (Electronic Control Unit) 4, and a control section 5. consists of

エンジン2には、複数の気筒が形成されている。本実施例において、エンジン2は、各気筒に対して、吸気行程、圧縮行程、膨張行程及び排気行程からなる一連の4行程を行なうように構成されている。本実施例においては、エンジン2の駆動力によって車両1を走行させるようになっている。 A plurality of cylinders are formed in the engine 2 . In this embodiment, the engine 2 is constructed so that each cylinder performs a series of four strokes consisting of an intake stroke, a compression stroke, an expansion stroke and an exhaust stroke. In this embodiment, the driving force of the engine 2 is used to drive the vehicle 1 .

警報装置3は、例えば、モニタ装置、スピーカ、ランプ、メータ、ブザーなどで構成され、視覚、聴覚などを通じて各種警報を運転者に報知する。 The alarm device 3 includes, for example, a monitor device, a speaker, a lamp, a meter, a buzzer, etc., and notifies the driver of various alarms through sight, hearing, and the like.

エンジンECU4は、CPU(Central Processing Unit)と、RAM(Random Access Memory)と、ROM(Read Only Memory)と、フラッシュメモリと、入力ポートと、出力ポートとを備えたコンピュータユニットによって構成されている。 The engine ECU 4 is composed of a computer unit having a CPU (Central Processing Unit), RAM (Random Access Memory), ROM (Read Only Memory), flash memory, an input port, and an output port.

エンジンECU4のROMには、各種制御定数や各種マップ等とともに、当該コンピュータユニットをエンジンECU4として機能させるためのプログラムが記憶されている。すなわち、CPUがROMに記憶されたプログラムを実行することにより、当該コンピュータユニットは、エンジンECU4として機能する。また、エンジンECU4は、制御部5に接続され、相互にデータのやりとりを行なう。 The ROM of the engine ECU 4 stores a program for causing the computer unit to function as the engine ECU 4 along with various control constants, various maps, and the like. That is, the computer unit functions as the engine ECU 4 by the CPU executing the program stored in the ROM. The engine ECU 4 is also connected to the control unit 5 and exchanges data with each other.

エンジンECU4は、制御部5からのトルク指令信号により、エンジン2の出力トルクがトルク指令信号に設定されたトルク指令値になるようにエンジン2を制御する。エンジンECU4は、不図示のインジェクタやスロットルバルブを制御することにより燃料噴射量や吸入空気量を制御させて、エンジン2の出力トルクを制御する。 The engine ECU 4 controls the engine 2 according to the torque command signal from the control unit 5 so that the output torque of the engine 2 becomes the torque command value set in the torque command signal. The engine ECU 4 controls the output torque of the engine 2 by controlling the fuel injection amount and the intake air amount by controlling injectors and throttle valves (not shown).

制御部5は、CPUと、RAMと、ROMと、フラッシュメモリと、入力ポートと、出力ポートとを備えたコンピュータユニットによって構成されている。 The control unit 5 is composed of a computer unit having a CPU, RAM, ROM, flash memory, input port, and output port.

制御部5のROMには、各種制御定数や各種マップ等とともに、当該コンピュータユニットを制御部5として機能させるためのプログラムが記憶されている。すなわち、CPUがROMに記憶されたプログラムを実行することにより、当該コンピュータユニットは、制御部5として機能する。制御部5は、エンジンECU4に接続され、相互にデータのやりとりを行なう。 The ROM of the controller 5 stores a program for causing the computer unit to function as the controller 5 together with various control constants, various maps, and the like. That is, the computer unit functions as the control section 5 by the CPU executing the program stored in the ROM. The control unit 5 is connected to the engine ECU 4 and exchanges data with each other.

制御部5の入力ポートには、前方センサ51、後方センサ52、アクセル開度センサ53、ブレーキスイッチ54、車速センサ55、エンジン回転数センサ56、シフトポジションセンサ57を含む各種センサ類が接続されている。 Various sensors including a front sensor 51, a rear sensor 52, an accelerator opening sensor 53, a brake switch 54, a vehicle speed sensor 55, an engine speed sensor 56, and a shift position sensor 57 are connected to input ports of the control unit 5. there is

前方センサ51は、レーザ光、超音波、ミリ波等を送受信したり、カメラによって前方を撮像したりして車両1の前方に存在する物体との距離を検出する。 The forward sensor 51 detects the distance to an object present in front of the vehicle 1 by transmitting/receiving laser light, ultrasonic waves, millimeter waves, or the like, or taking an image of the forward direction with a camera.

後方センサ52は、レーザ光、超音波、ミリ波等を送受信したり、カメラによって後方を撮像したりして車両1の後方に存在する物体との距離を検出する。 The rearward sensor 52 detects the distance to an object behind the vehicle 1 by transmitting/receiving laser light, ultrasonic waves, millimeter waves, or the like, or by capturing an image behind the vehicle 1 with a camera.

アクセル開度センサ53は、不図示のアクセルペダルの運転者による踏み込み量をアクセル開度として検出する。 An accelerator opening sensor 53 detects the amount of depression of an accelerator pedal (not shown) by the driver as an accelerator opening.

ブレーキスイッチ54は、不図示のブレーキペダルが運転者により踏み込まれたか否かを検出する。 A brake switch 54 detects whether or not a brake pedal (not shown) is depressed by the driver.

車速センサ55は、例えば、不図示の駆動軸の回転速度から車速を検出する。車速センサ55は、車両1が前進方向に進んでいる場合は正の車速を出力し、車両1が後進方向に進んでいる場合は負の車速を出力する。 A vehicle speed sensor 55 detects the vehicle speed from, for example, the rotational speed of a drive shaft (not shown). The vehicle speed sensor 55 outputs a positive vehicle speed when the vehicle 1 is traveling forward, and outputs a negative vehicle speed when the vehicle 1 is traveling backward.

エンジン回転数センサ56は、エンジン2の機関回転数であるエンジン回転数を検出する。 An engine speed sensor 56 detects the engine speed, which is the engine speed of the engine 2 .

シフトポジションセンサ57は、運転者による不図示のシフトレバーの操作により選択されたシフト位置を検出する。シフト位置は、例えば、前進、後進、ニュートラルのいずれかが選択される。
一方、制御部5の出力ポートには、警報装置3が接続されている。
A shift position sensor 57 detects a shift position selected by the driver's operation of a shift lever (not shown). For example, one of forward, reverse, and neutral is selected as the shift position.
On the other hand, the alarm device 3 is connected to the output port of the controller 5 .

このような構成の車両1において、制御部5は、運転者の誤操作によって急発進してしまうことを抑制するために、例えば、ブレーキペダルが踏まれていないこと、車両1の進行方向の所定距離内に障害物が検出されていること、などの誤発進抑制条件を満たしていて、アクセル開度やアクセル開度の変化量が閾値よりも大きくなった場合、エンジン2による駆動トルクの出力を抑制する駆動トルク抑制制御を実行する。 In the vehicle 1 having such a configuration, the control unit 5 controls, for example, that the brake pedal is not depressed, and that the vehicle 1 travels a predetermined distance in the direction of travel in order to prevent the vehicle 1 from suddenly starting due to an erroneous operation by the driver. If an obstacle is detected inside the vehicle, or if the accelerator opening or the amount of change in the accelerator opening exceeds a threshold, the drive torque output from the engine 2 is suppressed. drive torque suppression control is executed.

制御部5は、エンジンECU4へのトルク指令信号により、エンジン2による駆動トルクの出力を抑制させるトルク制御部11として機能する。 The control unit 5 functions as a torque control unit 11 that suppresses the drive torque output from the engine 2 by a torque command signal to the engine ECU 4 .

制御部5は、アクセル開度に対する閾値であるアクセル開度閾値と、アクセル開度の変化量に対する閾値であるアクセル開度変化量閾値と、により駆動トルク抑制制御の実行を判定する。 The control unit 5 determines whether to execute the drive torque suppression control based on an accelerator opening threshold, which is a threshold for the accelerator opening, and an accelerator opening change amount threshold, which is a threshold for the amount of change in the accelerator opening.

制御部5は、アクセル開度とアクセル開度の変化量が所定の駆動トルク抑制制御実行条件を満たしたときに、駆動トルク抑制制御を実行する。 The control unit 5 executes driving torque suppression control when the accelerator opening and the amount of change in the accelerator opening satisfy a predetermined driving torque suppression control execution condition.

制御部5は、例えば、アクセル開度がアクセル開度閾値より大きいことを駆動トルク抑制制御実行条件とする。 The control unit 5 sets, for example, that the accelerator opening is greater than the accelerator opening threshold as the driving torque suppression control execution condition.

制御部5は、例えば、アクセル開度がアクセル開度閾値より大きいことに加え、アクセル開度の変化量がアクセル開度変化量閾値より大きいことを駆動トルク抑制制御実行条件としてもよい。 For example, the control unit 5 may set the drive torque suppression control execution condition that, in addition to the accelerator opening being larger than the accelerator opening threshold, the change amount of the accelerator opening being larger than the accelerator opening change amount threshold.

制御部5は、例えば、アクセル開度がアクセル開度閾値より大きいことと、アクセル開度の変化量がアクセル開度変化量閾値より大きいことの、いずれか一方が満たされたことを駆動トルク抑制制御実行条件としてもよい。 For example, the control unit 5 determines that either the accelerator opening is larger than the accelerator opening threshold or the change amount of the accelerator opening is larger than the accelerator opening change amount threshold is satisfied. It may be used as a control execution condition.

制御部5は、シフトポジションセンサ57により検出されたシフト位置により車両1の進行方向を検出する進行方向検出部12として機能する。 The control unit 5 functions as a travel direction detection unit 12 that detects the travel direction of the vehicle 1 based on the shift position detected by the shift position sensor 57 .

制御部5は、車速センサ55により検出された車速により車両1が停止状態にあるか走行中状態にあるかを判定する走行状態判定部14として機能する。 The control unit 5 functions as a running state determination unit 14 that determines whether the vehicle 1 is in a stopped state or a running state based on the vehicle speed detected by the vehicle speed sensor 55 .

制御部5は、車両1の進行方向が前進方向であるときのアクセル開度閾値を、車両1の進行方向が後進方向であるときのアクセル開度閾値よりも大きくなるように設定する条件設定部13として機能する。 The control unit 5 sets a condition setting unit that sets an accelerator opening threshold when the traveling direction of the vehicle 1 is the forward direction to be larger than an accelerator opening threshold when the traveling direction of the vehicle 1 is the reverse direction. 13.

運転者は、自車両が前進する場合は後進する場合と比較してアクセルペダルを大きく踏み込む傾向があるため、後進時よりも前進時の方が、駆動トルク抑制制御が作動し難くなるよう条件を設定することで、運転者の意図に沿うトルク出力を満たしつつ、誤操作によるトルク出力を防止することができる。 The driver tends to depress the accelerator pedal more when the vehicle is moving forward than when reversing. By setting, it is possible to prevent torque output due to an erroneous operation while satisfying the torque output intended by the driver.

また、アクセル開度閾値を前進と後進とに応じて変えるため、例えば前進と後進いずれの場合であっても踏込速度は同一にしつつ、踏込量を前進時と後進時に応じて操作するような運転者にあっても、適切に誤操作によるトルク出力を防止することができる。 In addition, since the accelerator opening threshold is changed according to whether the vehicle is traveling forward or backward, for example, the pedaling speed is the same regardless of whether the vehicle is traveling forward or backward, and the amount of depression is adjusted according to whether the vehicle is traveling forward or backward. It is possible to appropriately prevent torque output due to erroneous operation even by a person.

制御部5は、車両1の進行方向が前進方向であるときのアクセル開度変化量閾値を、車両1の進行方向が後進方向であるときのアクセル開度変化量閾値よりも大きくなるように設定する条件設定部13として機能する。 The control unit 5 sets the accelerator opening change amount threshold when the vehicle 1 is moving forward so that it is larger than the accelerator opening change amount threshold when the vehicle 1 is moving backward. It functions as a condition setting unit 13 that

アクセル開度そのものに加えて、アクセル開度の変化量についても、後進時よりも前進時の方が、駆動トルク抑制制御が作動し難くなるように条件をさらに設定するため、例えば前進と後進いずれの場合であっても、最終的な踏込量は同一でありつつも、踏込速度が異なるような操作特性でアクセル操作する運転者にあっても、適切に誤操作によるトルク出力を防止することができる。 In addition to the accelerator opening itself, the amount of change in the accelerator opening is further set so that the drive torque suppression control is more difficult to operate when moving forward than when moving backward. Even in the case of , even if the final depression amount is the same, even if the driver operates the accelerator with the operation characteristics that the depression speed is different, it is possible to appropriately prevent torque output due to erroneous operation. .

制御部5は、車両1の走行状態が停止状態にあるときのアクセル開度閾値を、車両1の走行状態が走行中状態にあるときのアクセル開度閾値よりも大きくなるように設定する条件設定部13として機能する。 The control unit 5 sets conditions for setting an accelerator opening degree threshold when the vehicle 1 is in a stopped state to be larger than an accelerator opening degree threshold when the vehicle 1 is in a running state. It functions as part 13.

運転者は、停止状態から発進する場合は、低速走行状態(例えば、駐車する際の走行時)である場合と比較してアクセルペダルを大きく、素早く踏み込む傾向があるため、走行中状態よりも停止状態の方が、駆動トルク抑制制御が作動し難くなるように条件を設定することで、運転者の意図に沿うトルク出力を満たしつつ、誤操作によるトルク出力を防止することができる。 When starting from a stopped state, the driver tends to depress the accelerator pedal more and quickly than when driving at a low speed (for example, when driving when parking), so the driver tends to stop more than when driving. By setting the conditions so that the drive torque suppression control is less likely to operate, it is possible to prevent torque output due to erroneous operation while satisfying the torque output intended by the driver.

制御部5は、車両1の走行状態が停止状態にあるときのアクセル開度変化量閾値を、車両1の走行状態が走行中状態にあるときのアクセル開度変化量閾値よりも大きくなるように設定する条件設定部13として機能する。 The control unit 5 sets the accelerator opening change amount threshold when the vehicle 1 is in the stopped state to be larger than the accelerator opening change amount threshold when the vehicle 1 is in the running state. It functions as a condition setting unit 13 for setting.

アクセル開度そのものに加えて、アクセル開度の変化量も後進時よりも前進時の方が、駆動トルク抑制制御が作動し難くなるように条件をさらに設定するため、例えば発進時と低速走行時とのいずれの場合であっても、最終的な踏込量は同一でありつつも、踏込速度が異なるような操作特性でアクセル操作する運転者や、逆に踏込速度は同一でありつつも踏込量が異なるような操作特性でアクセル操作する運転者にあっても、適切に誤操作によるトルク出力を防止することができる。 In addition to the accelerator opening itself, the amount of change in the accelerator opening is also set so that the driving torque suppression control is more difficult to operate when moving forward than when moving backward. In either case, although the final depression amount is the same, the driver who operates the accelerator with the operation characteristic that the depression speed is different, or conversely, the depression amount is the same although the depression speed is the same Even if the driver operates the accelerator with operation characteristics different from each other, it is possible to appropriately prevent torque output due to erroneous operation.

制御部5は、アクセル開度やアクセル開度の変化量が閾値よりも大きくなった場合、警報装置により車両1の乗員に警報を出力させる警報制御部15として機能する。 The control unit 5 functions as an alarm control unit 15 that outputs an alarm to the occupant of the vehicle 1 by an alarm device when the accelerator opening or the amount of change in the accelerator opening exceeds a threshold value.

制御部5は、アクセル開度に対する閾値であるアクセル開度警報閾値と、アクセル開度の変化量に対する閾値であるアクセル開度変化量警報閾値と、により警報の出力を判定する。 The control unit 5 determines the output of an alarm based on an accelerator opening warning threshold, which is a threshold for the accelerator opening, and an accelerator opening change amount warning threshold, which is a threshold for the amount of change in the accelerator opening.

制御部5は、アクセル開度とアクセル開度の変化量が所定の警報条件を満たしたときに、警報を出力させる。 The control unit 5 outputs an alarm when the accelerator opening and the amount of change in the accelerator opening satisfy a predetermined alarm condition.

制御部5は、例えば、アクセル開度がアクセル開度警報閾値より大きいことを警報条件とする。 The control unit 5 sets, for example, that the accelerator opening is greater than the accelerator opening warning threshold value as a warning condition.

制御部5は、例えば、アクセル開度がアクセル開度警報閾値より大きいことに加え、アクセル開度の変化量がアクセル開度変化量警報閾値より大きいことを警報条件としてもよい。 For example, the controller 5 may set the warning condition to be that the accelerator opening is greater than the accelerator opening warning threshold and that the change amount of the accelerator opening is greater than the accelerator opening change amount warning threshold.

制御部5は、例えば、アクセル開度がアクセル開度警報閾値より大きいことと、アクセル開度の変化量がアクセル開度変化量警報閾値より大きいことの、いずれか一方が満たされたことを警報条件としてもよい。 For example, the controller 5 warns that either the accelerator opening is greater than the accelerator opening warning threshold value or the change amount of the accelerator opening is greater than the accelerator opening change amount warning threshold value is satisfied. It can be used as a condition.

制御部5は、アクセル開度警報閾値をアクセル開度閾値よりも小さくなるように設定する警報閾値設定部16として機能する。制御部5は、アクセル開度変化量警報閾値をアクセル開度変化量閾値よりも小さくなるように設定する警報閾値設定部16として機能する。 The control unit 5 functions as a warning threshold setting unit 16 that sets the accelerator opening warning threshold to be smaller than the accelerator opening threshold. The control unit 5 functions as a warning threshold value setting unit 16 that sets an accelerator opening change amount warning threshold value to be smaller than the accelerator opening change amount threshold value.

このようにすることで、駆動トルク抑制制御が実行される前に警報が出力されるため、運転者が早めに誤操作に気付いた場合、不要な駆動トルク抑制制御が実行されることを防止することができる。 By doing so, an alarm is output before the drive torque suppression control is executed, so that unnecessary drive torque suppression control can be prevented from being executed when the driver notices the erroneous operation early. can be done.

制御部5は、車両1の進行方向が前進方向であるときのアクセル開度警報閾値を、車両1の進行方向が後進方向であるときのアクセル開度警報閾値よりも大きくなるように設定する警報閾値設定部16として機能する。 The control unit 5 sets an accelerator opening warning threshold when the traveling direction of the vehicle 1 is the forward direction to be larger than the accelerator opening warning threshold when the traveling direction of the vehicle 1 is the reverse direction. It functions as the threshold setting unit 16 .

制御部5は、車両1の進行方向が前進方向であるときのアクセル開度変化量警報閾値を、車両1の進行方向が後進方向であるときのアクセル開度変化量警報閾値よりも大きくなるように設定する警報閾値設定部16として機能する。 The control unit 5 sets the accelerator opening variation warning threshold when the traveling direction of the vehicle 1 is the forward direction to be larger than the accelerator opening variation warning threshold when the traveling direction of the vehicle 1 is the reverse direction. It functions as an alarm threshold value setting unit 16 that sets to .

制御部5は、車両1の走行状態が停止状態にあるときのアクセル開度警報閾値を、車両1の走行状態が走行中状態にあるときのアクセル開度警報閾値よりも大きくなるように設定する警報閾値設定部16として機能する。 The control unit 5 sets an accelerator opening warning threshold when the vehicle 1 is in a stopped state to be larger than an accelerator opening warning threshold when the vehicle 1 is in a running state. It functions as the alarm threshold value setting unit 16 .

制御部5は、車両1の走行状態が停止状態にあるときのアクセル開度変化量警報閾値を、車両1の走行状態が走行中状態にあるときのアクセル開度変化量警報閾値よりも大きくなるように設定する警報閾値設定部16として機能する。 The control unit 5 makes the accelerator opening change amount warning threshold when the vehicle 1 is in the stopped state larger than the accelerator opening change amount warning threshold when the vehicle 1 is in the running state. It functions as an alarm threshold value setting unit 16 that sets as follows.

制御部5は、シフトポジションセンサ57により検出されたシフト位置により走行レンジを検出する走行レンジ検出部17として機能する。走行レンジは、例えば、前進、後進、ニュートラルのいずれかが選択される。 The control unit 5 functions as a driving range detection unit 17 that detects the driving range based on the shift position detected by the shift position sensor 57 . For example, one of forward, reverse, and neutral is selected as the travel range.

制御部5は、駆動トルク抑制制御の実行中に走行レンジがニュートラルまたは反対の進行方向に切り換えられたことが検出された場合、所定期間の間、駆動トルク抑制制御を継続する。 The control unit 5 continues the driving torque suppression control for a predetermined period of time when it is detected that the driving range is switched to the neutral or the opposite traveling direction during execution of the driving torque suppression control.

なお、上述の所定期間は、予め設定された期間でもよいし、走行レンジの切り替えが検出されたときの車速に応じて長さを変えてもよいし、車速が所定値以下になるまでの期間としてもよい。 The above-mentioned predetermined period may be a period set in advance, may be changed in length according to the vehicle speed when the switching of the driving range is detected, or may be a period until the vehicle speed becomes equal to or less than a predetermined value. may be

駆動トルク抑制制御が作動中に、前進から後進またはニュートラル、後進から前進またはニュートラルに運転者の意志により切り換えられた場合に駆動トルク抑制制御を停止してしまうと、切り換え直後の車両1は、車速が直ぐにゼロにならず、切り換え前の進行方向を継続してしまい、駆動トルク抑制制御が停止した状態で障害物に接近してしまう。 If the drive torque suppression control is stopped when the drive torque suppression control is switched from forward to reverse or neutral, or from reverse to forward or neutral at the will of the driver, the vehicle 1 immediately after the switching is at a vehicle speed does not immediately become zero, the traveling direction before switching is continued, and the obstacle is approached while the driving torque suppression control is stopped.

このため、駆動トルク抑制制御の実行中に走行レンジがニュートラルまたは反対の進行方向に切り換えられたことが検出された場合、駆動トルク抑制制御を継続させることで、車両1が反対方向に動かない間(障害物との距離が短くなる間)は、駆動トルク抑制制御を継続させて車速を低下させることができる。 Therefore, when it is detected that the driving range has been switched to neutral or the opposite traveling direction during execution of the driving torque suppression control, by continuing the driving torque suppression control, it is possible to prevent the vehicle 1 from moving in the opposite direction. While the distance to the obstacle is getting shorter, the driving torque suppression control can be continued to reduce the vehicle speed.

制御部5は、例えば、アクセル開度閾値、アクセル開度変化量閾値、アクセル開度警報閾値、アクセル開度変化量警報閾値を、図2に示すように、進行方向及び走行状態ごとに記憶しておく。 The control unit 5 stores, for example, an accelerator opening threshold value, an accelerator opening change amount threshold value, an accelerator opening warning threshold value, and an accelerator opening change amount warning threshold value for each traveling direction and driving state, as shown in FIG. Keep

図2において、各閾値は、進行方向が前進方向であるときの停車中よりも低速走行中のほうが小さく、進行方向が前進方向であるときの低速走行中よりも進行方向が後進方向であるときの停車中のほうが小さく、進行方向が後進方向であるときの停車中よりも低速走行中のほうが小さく設定される。 In FIG. 2, each threshold value is smaller when the vehicle is traveling at low speed than when the vehicle is stopped when the traveling direction is forward, and when the traveling direction is reverse than when the vehicle is traveling at low speed when the traveling direction is forward. is smaller when the vehicle is stopped, and is smaller when the vehicle is running at a low speed than when the vehicle is stopped when the traveling direction is the reverse direction.

また、進行方向が前進方向であるときの停車中のアクセル開度閾値θsfsは、進行方向が後進方向であるときの停車中のアクセル開度閾値θsbsよりも大きい値が設定され、進行方向が前進方向であるときの低速走行中のアクセル開度閾値θsfrは、進行方向が後進方向であるときの低速走行中のアクセル開度閾値θsbrよりも大きい値が設定される。 In addition, the accelerator opening threshold θsfs when the vehicle is stopped when the traveling direction is forward is set to a value larger than the accelerator opening threshold θsbs when the vehicle is stationary when the traveling direction is the reverse direction, and the traveling direction is forward. The accelerator opening degree threshold θsfr during low speed running when the vehicle is in the direction is set to a value larger than the accelerator opening degree threshold θsbr during low speed running when the traveling direction is the reverse direction.

また、進行方向が前進方向であるときの停車中のアクセル開度変化量閾値θ'sfsは、進行方向が後進方向であるときの停車中のアクセル開度変化量閾値θ'sbsよりも大きい値が設定され、進行方向が前進方向であるときの低速走行中のアクセル開度変化量閾値θ'sfrは、進行方向が後進方向であるときの低速走行中のアクセル開度変化量閾値θ'sbrよりも大きい値が設定される。 Further, the accelerator opening change amount threshold θ'sfs while the vehicle is stopped when the traveling direction is the forward direction is a value larger than the accelerator opening change amount threshold θ'sbs while the vehicle is stopped when the traveling direction is the reverse direction. is set, and the accelerator opening change amount threshold θ'sfr during low-speed running when the traveling direction is the forward direction is set to the accelerator opening change amount threshold θ'sfr during low-speed traveling when the traveling direction is the reverse direction. A value greater than is set.

また、進行方向が前進方向であるときの停車中のアクセル開度閾値θsfsは、進行方向が前進方向であるときの低速走行中のアクセル開度閾値θsfrよりも大きい値が設定され、進行方向が前進方向であるときの停車中のアクセル開度変化量閾値θ'sfsは、進行方向が前進方向であるときの低速走行中のアクセル開度変化量閾値θ'sfrよりも大きい値が設定される。 In addition, the accelerator opening threshold θsfs during stop when the traveling direction is the forward direction is set to a value larger than the accelerator opening threshold θsfr during low-speed driving when the traveling direction is the forward direction. The accelerator opening change amount threshold θ'sfs during stopping when the vehicle is moving forward is set to a value larger than the accelerator opening change amount threshold θ'sfr during low-speed running when the vehicle is moving forward. .

また、進行方向が後進方向であるときの停車中のアクセル開度閾値θsbsは、進行方向が後進方向であるときの低速走行中のアクセル開度閾値θsbrよりも大きい値が設定され、進行方向が後進方向であるときの停車中のアクセル開度変化量閾値θ'sbsは、進行方向が後進方向であるときの低速走行中のアクセル開度変化量閾値θ'sbrよりも大きい値が設定される。 Further, the accelerator opening threshold θsbs during stopping when the traveling direction is reverse is set to a value larger than the accelerator opening threshold θsbr during low-speed driving when the traveling direction is reverse. The accelerator opening change amount threshold θ'sbs during stop when the vehicle is traveling in the reverse direction is set to a value larger than the accelerator opening change amount threshold θ'sbr during low speed running when the traveling direction is the reverse direction. .

また、進行方向が後進方向であるときは、クリープにより進むことが多く、アクセルがあまり踏まれない。すなわち、進行方向が前進方向であるときの低速走行中と比べ、進行方向が後進方向であるときの停車中のときはアクセルの踏み込みが弱い。 Also, when the traveling direction is the reverse direction, the vehicle tends to creep and the accelerator is not stepped on so much. That is, the accelerator pedal is weaker when the vehicle is stopped when the vehicle is traveling in the reverse direction than when the vehicle is traveling at a low speed when the vehicle is traveling in the forward direction.

このことから、進行方向が前進方向であるときの低速走行中のアクセル開度警報閾値θafrは、進行方向が後進方向であるときの停車中のアクセル開度警報閾値θabsよりも大きい値が設定される。 For this reason, the accelerator opening warning threshold θafr during low-speed running when the traveling direction is forward is set to a value larger than the accelerator opening warning threshold θabs during stopping when the traveling direction is reverse. be.

また、進行方向が前進方向であるときの低速走行中のアクセル開度変化量警報閾値θ'afrは、進行方向が後進方向であるときの停車中のアクセル開度変化量警報閾値θ'absよりも大きい値が設定される。 In addition, the accelerator opening variation warning threshold θ'afr during low-speed driving when the traveling direction is forward is higher than the accelerator opening variation warning threshold θ'abs during stopping when the traveling direction is reverse. is set to a large value.

また、進行方向が前進方向であるときの低速走行中のアクセル開度閾値θsfrは、進行方向が後進方向であるときの停車中のアクセル開度閾値θsbsよりも大きい値が設定される。 Further, the accelerator opening degree threshold θsfr during low-speed running when the traveling direction is the forward direction is set to a larger value than the accelerator opening degree threshold θsbs during stopping when the traveling direction is the reverse direction.

また、進行方向が前進方向であるときの低速走行中のアクセル開度変化量閾値θ'sfrは、進行方向が後進方向であるときの停車中のアクセル開度変化量閾値θ'sbsよりも大きい値が設定される。 Further, the accelerator opening change amount threshold θ'sfr during low-speed running when the traveling direction is the forward direction is greater than the accelerator opening change amount threshold θ'sbs while the vehicle is stopped when the traveling direction is the reverse direction. Value is set.

以上のように構成された本実施例に係る駆動力制御装置による条件設定処理について、図3を参照して説明する。なお、以下に説明する条件設定処理は、制御部5が動作を開始すると開始され、予め設定された時間間隔で実行される。 Condition setting processing by the driving force control apparatus according to the present embodiment configured as described above will be described with reference to FIG. The condition setting process described below is started when the control unit 5 starts operating, and is executed at preset time intervals.

ステップS1において、制御部5は、シフトポジションセンサ57により検出されたシフト位置により車両1の進行方向を検出する。 In step S<b>1 , the control unit 5 detects the traveling direction of the vehicle 1 based on the shift position detected by the shift position sensor 57 .

ステップS2において、制御部5は、車速センサ55により検出された車速により車両1の走行状態を検出する。 At step S<b>2 , the control unit 5 detects the running state of the vehicle 1 based on the vehicle speed detected by the vehicle speed sensor 55 .

ステップS3において、制御部5は、車両1の進行方向と車両1の走行状態に基づいてアクセル開度閾値を設定する。 In step S<b>3 , the control unit 5 sets an accelerator opening threshold based on the traveling direction of the vehicle 1 and the running state of the vehicle 1 .

ステップS4において、制御部5は、車両1の進行方向と車両1の走行状態に基づいてアクセル開度変化量閾値を設定する。 In step S<b>4 , the control unit 5 sets an accelerator opening change amount threshold based on the traveling direction of the vehicle 1 and the running state of the vehicle 1 .

ステップS5において、制御部5は、車両1の進行方向と車両1の走行状態に基づいてアクセル開度警報閾値とアクセル開度変化量警報閾値を設定して、終了する。 In step S5, the control unit 5 sets an accelerator opening warning threshold value and an accelerator opening change amount warning threshold value based on the traveling direction of the vehicle 1 and the running state of the vehicle 1, and ends the process.

本実施例に係る駆動力制御装置による駆動トルク抑制処理について、図4を参照して説明する。なお、以下に説明する駆動トルク抑制処理は、上述の誤発進抑制条件を満たした場合に開始され、予め設定された時間間隔で実行され、上述の誤発進抑制条件を満たさなくなった場合に停止される。 Driving torque suppression processing by the driving force control device according to the present embodiment will be described with reference to FIG. The drive torque suppression process described below is started when the above-described erroneous start suppression condition is satisfied, is executed at preset time intervals, and is stopped when the above-described erroneous start suppression condition is no longer satisfied. be.

ステップS11において、制御部5は、アクセル開度センサ53によりアクセル開度を検出する。 In step S<b>11 , the controller 5 detects the accelerator opening using the accelerator opening sensor 53 .

ステップS12において、制御部5は、前回実行時のアクセル開度と今回のアクセル開度からアクセル開度変化量を算出する。 In step S12, the control unit 5 calculates the amount of change in accelerator opening from the accelerator opening at the previous execution and the accelerator opening at this time.

ステップS13において、制御部5は、アクセル開度とアクセル開度変化量が上述の警報条件を満たしたか否かを判定する。警報条件を満たしていないと判定した場合、制御部5は、処理を終了する。 In step S13, the control unit 5 determines whether or not the accelerator opening and the amount of change in the accelerator opening satisfy the above-described alarm conditions. When determining that the alarm condition is not satisfied, the control unit 5 terminates the process.

ステップS13において警報条件を満たしたと判定した場合、ステップS14において、制御部5は、警報装置3に警報を出力させる。 If it is determined in step S13 that the alarm condition is satisfied, the controller 5 causes the alarm device 3 to output an alarm in step S14.

ステップS15において、制御部5は、アクセル開度とアクセル開度変化量が上述の駆動トルク抑制制御実行条件を満たしたか否かを判定する。駆動トルク抑制制御実行条件を満たしていないと判定した場合、制御部5は、処理を終了する。 In step S15, the control unit 5 determines whether or not the accelerator opening and the amount of change in the accelerator opening satisfy the driving torque suppression control execution condition described above. When determining that the drive torque suppression control execution condition is not satisfied, the control unit 5 terminates the process.

ステップS15において駆動トルク抑制制御実行条件を満たしたと判定した場合、ステップS16において、制御部5は、駆動トルク抑制制御を実行して、処理を終了する。 If it is determined in step S15 that the driving torque suppression control execution condition is satisfied, then in step S16 the control unit 5 executes the driving torque suppression control and terminates the process.

このような駆動トルク抑制処理による動作について図5を参照して説明する。
図5に示すように、車両1の進行方向の所定距離内に障害物が検出されていて、アクセルが急激に踏まれると、アクセル開度の変化量が大きくなっていき、時刻t1においてアクセル開度変化量警報閾値を超え、時刻t2においてアクセル開度変化量閾値を超える。
The operation of such driving torque suppression processing will be described with reference to FIG.
As shown in FIG. 5, when an obstacle is detected within a predetermined distance in the traveling direction of the vehicle 1 and the accelerator is rapidly depressed, the amount of change in the accelerator opening increases. exceeds the degree change amount alarm threshold, and exceeds the accelerator opening degree change amount threshold at time t2.

その後、さらにアクセルが踏み込まれると、時刻t3においてアクセル開度警報閾値を超え、警報装置3により警報が出力される。時刻t4においてアクセル開度閾値を超えると、駆動トルク抑制制御が実行される。 After that, when the accelerator is further depressed, the accelerator opening warning threshold value is exceeded at time t3, and the warning device 3 outputs a warning. When the accelerator opening threshold is exceeded at time t4, driving torque suppression control is executed.

本実施例に係る駆動力制御装置による駆動トルク抑制制御継続処理について、図6を参照して説明する。なお、以下に説明する駆動トルク抑制制御継続処理は、制御部5が動作を開始すると開始され、予め設定された時間間隔で実行される。 Driving torque suppression control continuation processing by the driving force control device according to the present embodiment will be described with reference to FIG. The driving torque suppression control continuation process described below is started when the control unit 5 starts operating, and is executed at preset time intervals.

ステップS21において、制御部5は、走行レンジがニュートラルまたは反対の進行方向に切り換えられたか否かを判定する。走行レンジがニュートラルまたは反対の進行方向に切り換えられていないと判定した場合、制御部5は、処理を終了する。 In step S21, the control unit 5 determines whether or not the travel range has been switched to neutral or the opposite travel direction. When determining that the travel range has not been switched to neutral or the opposite direction of travel, the control unit 5 ends the process.

ステップS21において走行レンジがニュートラルまたは反対の進行方向に切り換えられたと判定した場合、ステップS22において、制御部5は、駆動トルク抑制制御が実行中か否かを判定する。駆動トルク抑制制御が実行中でないと判定した場合、制御部5は、処理を終了する。 If it is determined in step S21 that the travel range has been switched to neutral or the opposite direction of travel, then in step S22 the controller 5 determines whether drive torque suppression control is being executed. When determining that the driving torque suppression control is not being executed, the control unit 5 ends the process.

ステップS22において駆動トルク抑制制御が実行中であると判定した場合、ステップS23において、制御部5は、所定期間駆動トルク抑制制御を継続する。 When it is determined in step S22 that the drive torque suppression control is being executed, in step S23, the controller 5 continues the drive torque suppression control for a predetermined period.

このような駆動トルク抑制制御継続処理による動作について図7を参照して説明する。
図7に示すように、低速で後退中に後方に障害物を検知していて駆動トルク抑制制御が実行中のとき、時刻t5において走行レンジが後進から前進に切り換えられると、駆動トルク抑制制御が実行中であるため、駆動トルク抑制制御が継続して実行される。
The operation of such driving torque suppression control continuation processing will be described with reference to FIG.
As shown in FIG. 7, when an obstacle is detected behind the vehicle while backing up at a low speed and drive torque suppression control is being executed, when the driving range is switched from reverse to forward at time t5, drive torque suppression control is performed. Since it is being executed, the driving torque suppression control is continuously executed.

時刻t6において、車速が所定値以下となって車両1が停止したと判定されると、所定期間が終了したとして駆動トルク抑制制御が終了する。 At time t6, when it is determined that the vehicle speed has become equal to or less than the predetermined value and the vehicle 1 has stopped, it is determined that the predetermined period has ended, and the driving torque suppression control ends.

なお、駆動トルク抑制制御を実行中、エンジン回転数が所定値以下に低下した場合、メッセージ表示やブザー吹鳴などにより、エンジン回転数が低下したことを運転者に報知するようにしてもよい。 If the engine speed drops below a predetermined value while driving torque suppression control is being executed, the driver may be notified of the drop in engine speed by displaying a message, sounding a buzzer, or the like.

手動変速機を搭載した車両において、駆動トルク抑制制御が作動した場合、エンジントルクが低トルクに抑制されるが、そのまま何もしなければエンスト状態になる。このため、エンジン回転数が所定値以下に低下した場合、エンジン回転数が低下したことを運転者に報知することで、運転者にエンストを回避する操作を促すことができる。 In a vehicle equipped with a manual transmission, when the drive torque suppression control is activated, the engine torque is suppressed to a low torque, but if nothing is done, the engine stalls. Therefore, when the engine speed drops below a predetermined value, the driver is notified of the drop in engine speed, thereby prompting the driver to perform an operation to avoid the engine stall.

また、トラックなどの後方にゲートを備えた車両において、このゲートが開いていることを検出するセンサを設け、このセンサが後方のゲートが開いていることを検出しているときは、このゲートよりも遠方の障害物を検出した場合に駆動トルク抑制制御を実行するようにしてもよい。 In addition, a vehicle such as a truck equipped with a gate at the rear is provided with a sensor for detecting that the gate is open. The drive torque suppression control may be executed when an obstacle farther away is detected.

このようにすることで、ゲートを障害物として検知して駆動トルク抑制制御が実行されることを回避することができ、不要な駆動トルク抑制制御の実行を抑制することができる。 By doing so, it is possible to avoid execution of the driving torque suppression control by detecting the gate as an obstacle, and it is possible to suppress unnecessary execution of the driving torque suppression control.

後方センサ52によりゲートとその他の障害物を区別可能な場合は、後方センサ52による検出結果によりゲートが開いていることを検出してもよい。 If the rear sensor 52 can distinguish between the gate and other obstacles, the detection result of the rear sensor 52 may be used to detect that the gate is open.

また、本実施例においては、エンジン2により車両1の駆動トルクを出力させる場合を示したが、モータなどにより車両1の駆動トルクを出力させる場合も同様に構成することができる。 In this embodiment, the engine 2 is used to output the driving torque of the vehicle 1, but the same configuration can be applied to the case of outputting the driving torque of the vehicle 1 by using a motor or the like.

本実施例では、各種センサ情報に基づき制御部5が各種の判定や算出を行なう例について説明したが、これに限らず、車両1が外部サーバ等の車外装置と通信可能な通信部を備え、該通信部から送信された各種センサの検出情報に基づき車外装置によって各種の判定や算出が行なわれ、その判定結果や算出結果を通信部で受信して、その受信した判定結果や算出結果を用いて各種制御を行なってもよい。 In the present embodiment, an example in which the control unit 5 performs various determinations and calculations based on various sensor information has been described. Various determinations and calculations are performed by the external device based on the detection information of various sensors transmitted from the communication unit, the determination results and calculation results are received by the communication unit, and the received determination results and calculation results are used. various controls may be performed.

本発明の実施例を開示したが、当業者によっては本発明の範囲を逸脱することなく変更が加えられうることは明白である。すべてのこのような修正及び等価物が次の請求項に含まれることが意図されている。 Although embodiments of the present invention have been disclosed, it will be apparent that modifications may be made by those skilled in the art without departing from the scope of the invention. All such modifications and equivalents are intended to be included in the following claims.

1 車両
2 エンジン
3 警報装置
4 エンジンECU
5 制御部
11 トルク制御部
12 進行方向検出部
13 条件設定部
14 走行状態判定部
15 警報制御部
16 警報閾値設定部
17 走行レンジ検出部
53 アクセル開度センサ
55 車速センサ
57 シフトポジションセンサ
1 vehicle 2 engine 3 alarm device 4 engine ECU
5 control unit 11 torque control unit 12 traveling direction detection unit 13 condition setting unit 14 driving state determination unit 15 alarm control unit 16 alarm threshold value setting unit 17 driving range detection unit 53 accelerator opening sensor 55 vehicle speed sensor 57 shift position sensor

Claims (2)

アクセルペダルの操作状態に応じて自車両の駆動トルクの出力を抑制する駆動トルク抑制制御を実行する駆動力制御装置であって、
前記アクセルペダルの開度がアクセル開度閾値よりも大きいか、前記アクセルペダルの開度の変化量がアクセル開度変化量閾値よりも大きいかの少なくとも一方を満たす場合に前記駆動トルク抑制制御を実行するトルク制御部と、
前記自車両が停止状態にあるか走行中状態にあるかを判定する走行状態判定部と、
前記走行状態判定部によって前記自車両が停止状態にあると判定された場合の前記アクセル開度閾値及び前記アクセル開度変化量閾値を、前記自車両が走行中状態にあると判定された場合の前記アクセル開度閾値及び前記アクセル開度変化量閾値よりも大きく設定する条件設定部と、
前記アクセルペダルの開度または前記アクセルペダルの開度の変化量の少なくとも一方が警報閾値よりも大きい場合に乗員に警報を出力する警報制御部と、
前記警報閾値を前記アクセル開度閾値及び前記アクセル開度変化量閾値よりも、小さい値に設定する警報閾値設定部と、を備え、
前記トルク制御部は、前記警報制御部による警報が出力された後、依然として前記アクセルペダルの開度が前記アクセル開度閾値よりも大きい場合、または前記アクセルペダルの開度変化量が前記アクセル開度変化量閾値よりも大きい場合の少なくとも一方が成立するとき前記駆動トルク抑制制御を実行する駆動力制御装置。
A driving force control device that executes a driving torque suppression control that suppresses the output of the driving torque of the own vehicle according to the operating state of an accelerator pedal,
The driving torque suppression control is executed when at least one of the opening degree of the accelerator pedal is larger than an accelerator opening threshold value and the amount of change in the opening degree of the accelerator pedal is larger than an accelerator opening change amount threshold value. a torque control unit that
a running state determination unit that determines whether the own vehicle is in a stopped state or in a running state;
The accelerator opening degree threshold value and the accelerator opening change amount threshold value when the vehicle is determined to be in a stopped state by the running state determination unit are set to the threshold values when the vehicle is determined to be in a running state. a condition setting unit that is set to be larger than the accelerator opening threshold and the accelerator opening variation threshold;
an alarm control unit that outputs an alarm to an occupant when at least one of the degree of opening of the accelerator pedal and the amount of change in the degree of opening of the accelerator pedal is greater than an alarm threshold;
an alarm threshold setting unit that sets the alarm threshold to a value smaller than the accelerator opening threshold and the accelerator opening change amount threshold,
After the warning is output by the warning control unit, the torque control unit is configured to control the accelerator pedal when the opening degree of the accelerator pedal is still larger than the accelerator opening threshold value, or when the amount of change in the opening degree of the accelerator pedal changes to the accelerator opening degree. A driving force control device that executes the driving torque suppression control when at least one of cases where the amount of change is greater than a threshold value is satisfied .
前記自車両の走行レンジを検出する走行レンジ検出部を備え、
前記トルク制御部は、前記駆動トルク抑制制御の実行中に前記走行レンジ検出部によって前記走行レンジがニュートラルまたは反対の進行方向に切り換えられたことが検出された場合、所定期間前記駆動トルク抑制制御を継続する請求項1に記載の駆動力制御装置。
A driving range detection unit that detects the driving range of the own vehicle,
The torque control unit performs the driving torque suppression control for a predetermined period of time when the driving range detection unit detects that the travel range is switched to neutral or to the opposite traveling direction during execution of the driving torque suppression control. 2. The driving force control device of claim 1, continuing.
JP2018034487A 2018-02-28 2018-02-28 Drive force controller Active JP7192217B2 (en)

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DE102019202340.1A DE102019202340A1 (en) 2018-02-28 2019-02-21 DRIVING FORCE CONTROL DEVICE
CN201910142940.7A CN110203201B (en) 2018-02-28 2019-02-26 Driving force control device
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