PROBLEM TO BE SOLVED: To prevent a misfire during failure determination of an exhaust recirculating device.SOLUTION: A failure determination device which is mounted on a vehicle equipped with an engine 2 having an EGR passage 42 and an EGR valve 43 includes failure determination means for determining failure of the EGR valve 43 based on variation of a detection value of an intake pressure sensor 44 when opening and closing control of the EGR valve 43 is executed during a series mode, and second prescribed time Ta for regulating second failure determination from completion of first failure determination is set longer than first prescribed time T8 for regulating the first failure determination from starting of the engine 2.SELECTED DRAWING: Figure 2
【課題】排気還流装置の故障判定を行う際に、失火を防止する。【解決手段】EGR通路42及びEGRバルブ43を備えたエンジン2を具備する車両に備えられた故障判定装置であって、シリーズモード中にEGRバルブ43を開閉制御した際の吸気圧センサ44の検出値の変化に基づいてEGRバルブ43の故障判定をする故障判定手段を備え、エンジン2の始動から1回目の故障判定を規制する第1の所定時間T8よりも1回目の故障判定の終了から2回目の故障判定を規制する第2の所定時間Taを長く設定する。【選択図】図2
FAILURE DETERMINATION DEVICE OF VEHICLE
車両の故障判定装置
2016-06-30
Patent
Electronic Resource
Japanese
IPC: | F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF |