PROBLEM TO BE SOLVED: To provide a fuel pressure diagnosis device which can suitably secure a diagnosis opportunity of a fuel pressure sensor in a hybrid vehicle which performs electric traveling.SOLUTION: A diagnosis part 35 drives an electric feed pump 24 during electric traveling by the power of a motor by stopping the rotation of an engine in a hybrid vehicle having the engine and the motor as vehicle traveling power sources. Then, after a start of the drive of the electric feed pump 24, the diagnosis part 35 determines whether or not an output voltage Vpf of a low-pressure side fuel pressure sensor 27 reaches a value within a normal range, and diagnoses the presence or absence of an abnormality of the low-pressure side fuel pressure sensor 27 on the basis of a result of the determination.SELECTED DRAWING: Figure 3
【課題】電動走行を行うハイブリッド車両における燃圧センサの診断機会を好適に確保することのできる燃圧センサ診断装置を提供する。【解決手段】診断部35は、車両走行用の動力源としてエンジンとモータとを備えるハイブリッド車両における、エンジンの回転を停止してのモータの動力による電動走行中に、電動フィードポンプ24を駆動する。そして、診断部35は、その電動フィードポンプ24の駆動開始後に、低圧側燃圧センサ27の出力電圧Vpfが正常範囲内の値となっているか否かの判定を行い、その判定の結果に基づいて低圧側燃圧センサ27の異常の有無を診断する。【選択図】図3
FUEL PRESSURE SENSOR DIAGNOSIS DEVICE
燃圧センサ診断装置
2017-10-26
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 / F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen |
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