PROBLEM TO BE SOLVED: To suppress increase in the size of an electric oil pump and suppress electric power consumption while enabling supply of hydraulic pressure to a friction fastening element of a transmission while idle stop control during deceleration is performed in a vehicle that performs the idle stop control during deceleration.SOLUTION: A vehicle includes: an engine; an electric oil pump; a mechanical oil pump driven by the revolution of the engine; and a step automatic transmission having a first gear shift stage that can be formed by the operation of the electric oil pump and a second gear shift stage that cannot be formed by the operation of the electric pump but can be formed by the operation of the mechanical oil pump. During the deceleration of the vehicle, when combustion of the engine is stopped, the engine is in a predetermined revolution decline state and the driving state of the vehicle is in a state corresponding to the second gear shift stage, the electric oil pump is driven and gear shift from the second gear shift stage to the first gear shift stage is performed.SELECTED DRAWING: Figure 6
【課題】減速時アイドルストップ制御を行う車両において、電動式オイルポンプの大型化を抑制するとともに、減速時アイドルストップ制御中において、変速機の摩擦締結要素への油圧供給を可能にしつつ、電力消費の抑制を図る。【解決手段】エンジンと、電動式オイルポンプと、エンジンの回転によって駆動される機械式オイルポンプと、電動式オイルポンプの作動によって形成可能な第1変速段と、電動式オイルポンプの作動によっては形成不可能であり、機械式オイルポンプの作動によって形成可能な第2変速段とを有する有段式の自動変速機とを備えた車両において、車両の減速中に、エンジンの燃焼が停止され、エンジンが所定の回転低下状態であり、且つ、車両の運転状態が第2変速段に対応する状態であるとき、電動式オイルポンプを駆動するとともに、第2変速段から第1変速段への変速を行う。【選択図】図6
CONTROL DEVICE FOR VEHICLE WITH MULTISTAGE AUTOMATIC TRANSMISSION
多段自動変速機付車両の制御装置
2016-05-30
Patent
Electronic Resource
Japanese
IPC: | F16H Getriebe , GEARING / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / 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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