CONTROL DEVICE OF TRANSMISSION FOR VEHICLE

PROBLEM TO BE SOLVED: To provide a control device which can suppress the lowering of hydraulic pressure, in a transmission for a vehicle having a first power transmission mechanism and a second power transmission mechanism having a continuously variable transmission in parallel with each other.SOLUT...

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Bibliographische Detailangaben
Hauptverfasser: SAWADA MAKOTO, SASAKI KEITA, MORITOMO SUSUMU
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a control device which can suppress the lowering of hydraulic pressure, in a transmission for a vehicle having a first power transmission mechanism and a second power transmission mechanism having a continuously variable transmission in parallel with each other.SOLUTION: Since timing for starting the boosting control of an engagement-side clutch and timing for starting the boosting control of a continuously variable transmission 24 are not overlapped on each other completely, a large quantity of working oil is prevented from being consumed, and the lowering of hydraulic pressure caused by the lack of a flow rate of the working oil can be suppressed. On the other hand, after the lapse of a prescribed time T1, the boosting control of the continuously variable transmission 24 is started, and the flow rate to be consumed becomes small compared with the case that the engagement control of an engagement-side clutch and the boosting control of the continuously variable transmission 24 are simultaneously started. Therefore, the hydraulic pressure necessary for the boosting control of the continuously variable transmission 24 can be secured.SELECTED DRAWING: Figure 6 【課題】第1動力伝達機構と、無段変速機を備えて構成される第2動力伝達機構とを、並列に備える車両用変速機において、油圧低下の発生を抑制できる制御装置を提供する。【解決手段】係合側クラッチの増圧制御を開始する時期と、無段変速機24の増圧制御を開始する時期とが完全には重ならないため、多量の作動油が消費されることが防止され、作動油の流量不足による油圧低下を抑制することができる。また、所定時間T1経過後に、無段変速機24の増圧制御が開始されるが、係合側クラッチの係合制御と無段変速機24の増圧制御とが同時に開始される場合に比べて、消費される流量は少なくなる。従って、無段変速機24の増圧制御の際に必要となる油圧を確保することができる。【選択図】図6