To provide a vehicle failure diagnosis device capable of securing a diagnostic failure opportunity of an exhaust component while minimizing discomfort imparted to an occupant.SOLUTION: A vehicle failure diagnosis device comprises: a residual capacity detection unit that detects a residual capacity of a battery; a travel control unit that, upon a predetermined motor mode execution condition being satisfied, stops an engine and starts to drive a motor; and a fault diagnosis unit that, during a state with the engine being driven and a predetermined diagnosable condition satisfied, determines whether or not an exhaust component is faulty. When the motor mode execution condition is satisfied during the state with the engine being driven and the predetermined diagnosable condition satisfied, the fault diagnosis unit executes drive continuation control to continue driving the engine until a predetermined continuation period elapses after the motor mode execution condition is satisfied, and sets the continuation period to a period shorter when the residual capacity of the battery detected by the residual capacity detection unit is larger than when small.SELECTED DRAWING: Figure 1
【課題】乗員に与える違和感を小さく抑えつつ排気部品の故障診断機会を確保できる車両の故障診断装置を提供する。【解決手段】バッテリの残容量を検出する残容量検出部と、所定のモータモード実施条件が成立するとエンジンを停止してモータを駆動させる走行制御部と、エンジンの駆動中、且つ、所定の診断可能条件の成立中に、排気部品が故障しているか否かを判定する故障診断部とを設ける。故障診断部に、エンジンの駆動中且つ診断可能条件の成立中にモータモード実施条件が成立すると、当該モータモード実施条件が成立してから所定の継続期間が経過するまでの間、エンジンの駆動を継続させる駆動継続制御を実施させ、残容量検出部により検出されたバッテリの残容量が大きいときの方が小さいときよりも継続期間を短い期間に設定する。【選択図】図1
VEHICLE FAILURE DIAGNOSIS DEVICE
車両の故障診断装置
2024-10-04
Patent
Electronic Resource
Japanese
IPC: | F01N GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL , Schalldämpfer oder Auspuffvorrichtungen für Gase von Kraft- und Arbeitsmaschinen oder von Kraftmaschinen allgemein / 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 / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
European Patent Office | 2024
|European Patent Office | 2022
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