PROBLEM TO BE SOLVED: To provide a four-wheel drive vehicle equipped with a driving motor which performs torque assist, which suppresses generation of abnormal sound in torque transmitting means while suppressing deterioration in fuel economy.SOLUTION: A control device 34 is provided in a four-wheel drive vehicle 10 that has: an engine 14; a driving motor 15 that performs torque assist for the engine 14; torque transmitting means 50 that transmits output torque T of the engine 14 to front wheels 12F as main driving wheels and rear wheels 12R as auxiliary driving wheels; a coupling 28 for adjusting torque Tto be distributed to the rear wheels 12R; and abnormal sound reducing means that makes the coupling 28 to increase the distribution of torque to the rear wheels 12R so as to suppress generation of abnormal sound when operating the engine in an abnormal sound generation area where the torque transmitting means 50 becomes an abnormal sound generation state. The control device 34 increases the distribution of torque less as the driving motor 15 gives more torque assist.SELECTED DRAWING: Figure 3
【課題】トルクアシストする駆動モータを有するエンジンを備えた四輪駆動車において、燃費の悪化を抑制しながらトルク伝達手段における異音発生を抑制する。【解決手段】エンジン14と、エンジン14をトルクアシストする駆動モータ15と、エンジン14の出力トルクTを主駆動輪としての前輪12Fと補助駆動輪としての後輪12Rとに伝達するトルク伝達手段50と、後輪12Rに配分されるトルクTRを調整するカップリング28と、トルク伝達手段50が異音発生状態となる異音発生領域でのエンジン作動時に、異音の発生を抑制するようにカップリング28によって後輪12Rに対するトルク配分を増大させる異音低減手段と、を有する四輪駆動車10の制御装置34であって、制御装置34による前記トルク配分の増大は、駆動モータ15によるトルクアシストが多いほど少ないことを特徴とする。【選択図】図3
CONTROL DEVICE OF FOUR-WHEEL DRIVE VEHICLE AND FOUR-WHEEL DRIVE VEHICLE
四輪駆動車の制御装置及び四輪駆動車
2016-08-04
Patent
Electronic Resource
Japanese
IPC: | 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 / 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 |
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