FOUR-WHEEL DRIVE VEHICLE

To provide a four-wheel drive vehicle capable of improving NV performance when an engine is in a stopped state by automatic stop control.SOLUTION: When an engine is in a stopped state by automatic stop control CTsp, the change of a rear-wheel-side distribution ratio Xr involving the switching of the...

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Bibliographische Detailangaben
1. Verfasser:	TAKAIRA KOJI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES AUXILIARY DRIVES FOR VEHICLES CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES INSTRUMENTATION OR DASHBOARDS FOR VEHICLES PERFORMING OPERATIONS ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT TRANSPORTING VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	To provide a four-wheel drive vehicle capable of improving NV performance when an engine is in a stopped state by automatic stop control.SOLUTION: When an engine is in a stopped state by automatic stop control CTsp, the change of a rear-wheel-side distribution ratio Xr involving the switching of the rotational direction of an electric motor is inhibited, so that it is possible to prevent rattling noise from being generated, when background noise is small, by the inversion of a direction in which a backlash between components constituting a worm gear and a cam mechanism serving as a pressing mechanism is to be eliminated. As a result, when the engine is in the stopped state by the automatic stop control CTsp, NV performance can be improved.SELECTED DRAWING: Figure 7 【課題】自動停止制御によってエンジンが停止した状態にあるときに、ＮＶ性能を向上することができる四輪駆動車両を提供する。【解決手段】自動停止制御ＣＴspによってエンジンが停止した状態にあるときには、電動機の回転方向が切り替わる後輪側配分率Ｘrの変更が禁止されるので、暗騒音が小さいときに押圧機構であるウォームギヤ及びカム機構を構成する部品間のガタが詰められる方向が反転することによってガタ打ち音が発生してしまうことを防ぐことができる。よって、自動停止制御ＣＴspによってエンジンが停止した状態にあるときに、ＮＶ性能を向上することができる。【選択図】図７