PROBLEM TO BE SOLVED: To prevent erroneous determination on abnormality of a motor generator in a vehicle fault diagnostic device.SOLUTION: A fault diagnostic device 30 comprises: a torque estimation part 32 for estimating a torque estimation value of an internal combustion engine based on a torque of a motor generator; a torque calculation part 33 for calculating a torque calculation value of the internal combustion engine based on an engine speed of the internal combustion engine; and an abnormality determination part 34 for determining abnormality of the motor generator based on the torque estimation value of the internal combustion engine estimated by the torque estimation part 32 and the torque calculation value of the internal combustion engine calculated by the torque calculation part 33, when the internal combustion engine stops a fuel injection.SELECTED DRAWING: Figure 2
【課題】車両の故障診断装置において、モータジェネレータの異常の誤判定を防止することにある。【解決手段】故障診断装置30は、モータジェネレータのトルクに基づいて内燃機関のトルク推定値を推定するトルク推定部32と、内燃機関の回転速度に基づいて内燃機関のトルク計算値を算出するトルク計算部33と、内燃機関が燃料噴射を停止しているときに、トルク推定部32により推定された内燃機関のトルク推定値とトルク計算部33により算出された内燃機関のトルク計算値とに基づいて、モータジェネレータの異常を判定する異常判定部34とを備える。【選択図】図2
VEHICLE FAULT DIAGNOSTIC DEVICE
車両の故障診断装置
2017-02-23
Patent
Electronic Resource
Japanese
IPC: | 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 / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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