JP2007063990A - Collision accident preventive control and device of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To let a driver know not only abnormality but also more clearly and quickly let the driver and a surrounding vehicle know the occurrence of important abnormality in a vehicle by lighting or flashing of MIL when switched to a fail-safe control by detecting failure in ETB and APS and when an engine misfire is caused at a certain rate of. <P>SOLUTION: When switched to the fail-safe control or when switched to default control when the failure is caused in the ETB and the APS in an ETB mounting vehicle or a mechanical THB vehicle, a hazard lamp is automatically flashed by supplying a switched signal to a hazard lamp flashing circuit control relay together with lighting of the MIL. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  In the present invention, when a failure occurs in an ETB or an APS in a vehicle equipped with an ETB or a vehicle having a THB and is switched to fail-safe control, engine misfire that occurs due to an abnormality in the fuel system or the ignition system is at a certain rate. The present invention relates to a control device that prevents the occurrence of a collision or the like by automatically notifying the driver or a surrounding vehicle that the vehicle is a broken vehicle when it occurs.

  In the prior art, when a failure is detected in ETB or APS and switching to fail-safe control or when engine misfire occurs at a certain rate, the driver is informed of the abnormality by turning on or blinking MIL. The driver may not be aware of the occurrence of the failure only by lighting or blinking, and further, the surrounding vehicle is not informed that an important abnormality has occurred in the vehicle. However, if these failures occur during driving or if the failure is switched to fail-safe control, the vehicle speed may accelerate or decelerate separately from the driver's intention due to the accelerator operation. There is a possibility of falling into a collision involving the.

  Patent Documents 1 and 2 disclose a device that automatically blinks a hazard lamp in the event of a collision accident, but by notifying the driver, surrounding vehicles, etc. of the failure when an engine abnormality occurs as in the present invention. There is no mention of preventive safety to prevent collisions. Further, Patent Document 3 discloses a device for automatically blinking a hazard lamp during sudden braking, but there is no description about measures to be taken when an engine abnormality occurs.

JP-A-10-230785 JP-A-11-245719 JP-A-7-323783

  When a failure is detected in ETB or APS and switching to fail-safe control occurs, or when engine misfire occurs at a certain rate, not only the driver is informed of the abnormality by turning on or blinking MIL, but also more clearly and quickly. In addition, it is useful for the driver to notify the surrounding vehicle of the occurrence of an important abnormality in the vehicle.

  In the present invention, when a failure occurs in an ETB or APS in an ETB-equipped vehicle and it is switched to fail-safe control, engine misfire that occurs due to an abnormality in the fuel system or ignition system in a vehicle or mechanical THB having an ETB is to some extent If this occurs, not only the MIL lights or blinks as in the prior art, but also the hazard lamps automatically blink to inform the driver and surrounding vehicles that the vehicle is a malfunctioning vehicle. The purpose is to prevent the occurrence of a vehicle collision or the like.

  The MIL that is turned on when a failure has occurred in the vehicle may be known only by the driver of the vehicle, and it may be difficult for the driver to notice that it has been turned on. The present invention clearly detects not only the driver but also surrounding vehicles when fail-safe control due to ETB or APS failure that may cause a vehicle collision or when engine misfire occurs at a certain rate. Since it can be notified, it is effective in preventing the occurrence of rear-end collisions.

Previously, a hazard lamp that was blinking / extinguishing only by turning on / off the manual switch,
When fail-safe control due to ETB or APS failure or when engine misfire occurs at a certain rate, the relay switch is switched in response to a command from the engine control module (hereinafter referred to as ECM), separated from the manual switch, and operated by ECM. System. However, when the engine is stopped, the relay switch switching command from the ECM is turned OFF, and it is possible to switch to the operation of only the manual switch as in the conventional case.

  Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS.

  First, the control system of the present invention will be described with reference to FIG. FIG. 1 shows a hazard lamp control system.

  The conventional system of FIG. 1 (a) is a system in which the hazard lamp 2 blinks when the driver turns on the manual switch 1, but the manual switch 1 is shown in FIGS. A relay switch 3 is newly installed between the hazard lamp 2 and the hazard lamp 2. The relay switch 3 switches between hazard lamp control by the manual switch 1 (hereinafter referred to as manual switch mode) or hazard lamp control by the ECM 4 (ECM control mode) according to a command from the ECM 4.

  When the ECM4 command is OFF, the relay switch 3 is in the OFF state and enters the manual switch mode, and the hazard lamp 2 blinks only when the driver turns on the manual switch 1 as in the conventional system.

  When the ECM4 command is ON, the relay switch 3 is in the ON state, the ECM control mode is set, and the hazard lamp 2 flashes. In this case, the manual switch 1 and the hazard lamp 2 are separated from each other in a circuit form, so that the driver cannot operate the manual switch.

  Next, the control flow of the present invention will be described using the control flow of FIG.

  In the conventional control, the hazard lamp control is in the manual mode 11 performed by the driver operating the manual switch 1 regardless of the engine state 5, but in this control, the engine state 5 and the abnormality detection 6 to be controlled are determined. Whether the ETB or APS failure or engine misfire has occurred at a certain rate is switched to the ECM control mode 9 in which the hazard lamp automatically blinks.

First, when the engine state 5 is stopped, the hazard lamp control is in the manual mode 11, and the hazard lamp OFF 13 or the hazard lamp blinking 10 is selected by the driver's manual switch 12 operation.

  Further, even when the engine state 5 is rotating and the abnormality detection 6 that is the subject of this control is not judged, the hazard lamp control becomes the manual mode 11 as in the former, and the hazard lamp OFF 13 or the hazard is operated by the driver's manual switch 12 operation. Lamp blinking 10 is selected.

  However, when the engine state 5 is rotating and the abnormality detection 6 that is the subject of this control is determined, the MIL is turned on and fail-safe control is activated, and the ECM 4 (FIG. 1) is turned on to the relay switch 3 (FIG. 1). When the relay switch switching command is turned ON from 1), the relay switch is turned ON to switch the hazard lamp control to the ECM control mode 9 so that the hazard lamp blinks 10 automatically.

  FIG. 3 shows an example of a timing chart of the present invention. FIG. 3A is a timing chart showing the movement in the manual switch mode, and FIG. 3B is a timing chart showing the movement in the ECM control switch mode. The contents are as described in the control flow using FIG. 2 described above, and a detailed description thereof will be omitted.

FIG. The control flow figure in this invention. The control time chart of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,12 ... Manual switch, 2 ... Hazard lamp (including blinking circuit), 3 ... Relay switch, 4 ... ECM (Engine Control Module), 5 ... Engine state, 6 ... Abnormality detection, 7 ... MIL lighting control and fail safe control 8 ... Switch command ON from ECM to hazard lamp control switching relay switch, 9 ... Hazard lamp control (ECM control mode), 10 ... Hazard lamp blinking, 11 ... Manual mode, 13 ... Hazard lamp OFF.

Claims (5)

  There are a plurality of throttle opening / closing means for opening / closing a throttle valve for controlling the amount of air supplied to the engine and a throttle sensor (hereinafter referred to as TPS) for detecting the opening position of the throttle valve, and the opening signals of the plurality of TPSs. Has a self-diagnosis function for detecting a failure of the throttle valve opening / closing means by a default, and when the failure is detected in the throttle valve opening / closing means by the self-diagnosis function, the throttle valve opening is fixed at a predetermined position. When switching to fail-safe control, such as limiting the increase in engine speed by opening control, ignition control, or fuel injection control, the emergency flashing indicator light automatically turns on with the failure indicator light (hereinafter referred to as MIL) (Hereinafter referred to as a hazard lamp) A vehicle control device.   The vehicle control device according to claim 1, comprising a plurality of accelerator pedal sensors (hereinafter referred to as APS) for detecting a depression position of an accelerator pedal, which is one of control indices for controlling the throttle valve opening / closing means. A control device for an internal combustion engine having a self-diagnosis function for detecting an APS abnormality based on a plurality of APS opening signals, and having a control for switching to fail-safe control when a failure is detected in the APS by the self-diagnosis function In the vehicle control device according to claim 1, wherein when the abnormality is detected in the APS by the self-diagnosis function and the mode is switched to the fail-safe control, the hazard lamp is automatically operated together with the lighting of the MIL.   3. The vehicle control device according to claim 1, wherein a failure caused by a decrease in engine output performance or an abnormality of a fuel system or an ignition system is caused even when the throttle valve opening / closing means and the APS are not malfunctioning. When the engine misfire generated in the above occurs at a predetermined ratio or more, the emergency flashing lamp is automatically operated together with the lighting or flashing of the MIL. 2. The vehicle control apparatus according to claim 1, wherein the throttle valve opening / closing means is an electronically controlled throttle (hereinafter referred to as ETB) in which the throttle valve is operated by a motor, or the throttle is mechanically connected to an accelerator pedal by a wire or the like. A vehicle control device characterized in that it is one of mechanical throttles (hereinafter referred to as mechanical THB).   5. The vehicle control device according to claim 1, wherein the operation of the hazard lamp is performed by transmitting a signal switched to the default opening degree control or the fail-safe control to the hazard lamp blinking circuit via the hazard lamp blinking circuit control relay. A control apparatus for a vehicle, wherein the control is performed based on the supply.

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