PROBLEM TO BE SOLVED: To provide a negative pressure abnormality detector and an internal combustion engine controller, and thereby correctly determine presence/absence of abnormality in a negative pressure sensor and accurately prohibit automatic stopping of an internal combustion engine when the negative pressure sensor is abnormal.SOLUTION: The negative pressure abnormality detector includes a negative pressure sensor which outputs a signal according to negative pressure in a negative pressure chamber of a brake booster to which intake negative pressure of an intake manifold is led that is caused by rotation of an internal combustion engine. Further, the negative pressure is detected on the basis of the signal from the negative pressure sensor. When a state continues for a prescribed time or longer, in which the internal combustion engine rotates on one hand, while on the other hand, negative pressure consumption operation relative to a brake pedal is not performed by a driver, presence/absence of abnormality in the negative pressure sensor is determined on the basis of whether the detected negative pressure is on an atmospheric pressure side or a vacuum pressure side compared to a threshold value. Further, the threshold value is changed in accordance with an aperture of a throttle valve disposed in an intake pipe of an upstream side of the intake manifold during continuation of the described state.SELECTED DRAWING: Figure 4

    【課題】本発明は、負圧異常検出装置及び内燃機関の制御装置に係り、負圧センサの異常有無の判定を正確に行うこと、及び、負圧センサの異常時における内燃機関の自動的な停止の禁止を精度良く行うことにある。【解決手段】負圧異常検出装置は、内燃機関の回転により生じるインテークマニホールドの吸気負圧が導かれるブレーキブースタの負圧室の負圧に応じた信号を出力する負圧センサを備える。また、負圧センサからの信号に基づいて負圧を検出する。内燃機関が回転する一方で運転者によりブレーキペダルに対して負圧消費操作が行われていない状態が所定時間以上継続した場合に、検出負圧が閾値よりも大気圧側又は真空圧側にあるか否かに基づいて負圧センサの異常有無を判定する。また、上記の状態が継続している間における、インテークマニホールドの上流側の吸気管内に設けられたスロットルバルブの開度に応じて、上記の閾値を変更する。【選択図】図4


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    Title :

    NEGATIVE PRESSURE ABNORMALITY DETECTOR AND INTERNAL COMBUSTION ENGINE CONTROLLER


    Additional title:

    負圧異常検出装置及び内燃機関の制御装置


    Contributors:

    Publication date :

    2016-06-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen



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