CONTROL DEVICE FOR VEHICULAR POWER TRANSMISSION DEVICE

To provide a control device for a vehicular power transmission device including an engagement device for engaging/disengaging one power transmission path with/from the other, capable of performing neutral control even when part of the engagement device is controlled by an on/off solenoid valve.SOLUT...

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Bibliographic Details
Main Authors OITA SHINJI, AYABE ATSUSHI, FUJITA ASAMI, HATTORI KUNIO, OGATA YUSUKE
Format Patent
LanguageEnglish
Japanese
Published 23.04.2020
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Summary:To provide a control device for a vehicular power transmission device including an engagement device for engaging/disengaging one power transmission path with/from the other, capable of performing neutral control even when part of the engagement device is controlled by an on/off solenoid valve.SOLUTION: A C1 control pressure Pc1 of a first clutch C1 is controlled by an on/off solenoid valve 91, so that neutral control cannot be performed by the slip control of the first clutch C1. During vehicle stop, the neutral control is therefore executed by the slip control of a second clutch C2 of which C2 control pressure Pc2 is controlled by a linear solenoid valve 94. In this case, the first clutch C1 goes into the state of being engaged right after the vehicle stop, but control is performed from this state to a standby pressure Pc2 where the torque capacity of the second clutch C2 becomes a predetermined capacity, thus preventing the racing of an engine speed Nin in a subsequent transition period for releasing the first clutch C1.SELECTED DRAWING: Figure 6 【課題】各々の動力伝達経路を断接する係合装置を備える車両用動力伝達装置の制御装置において、係合装置の一部がオンオフソレノイドバルブで制御されても、ニュートラル制御を実施できる制御装置を提供する。【解決手段】第1クラッチC1のC1制御圧Pc1がオンオフソレノイドバルブ91によって制御されることから、第1クラッチC1のスリップ制御によるニュートラル制御は実施できない。そこで、車両停止中は、リニアソレノイドバルブ94によってC2制御圧Pc2が制御される第2クラッチC2をスリップ制御することによるニュートラル制御が実行される。ここで、車両停止直後は、第1クラッチC1が係合された状態となるが、この状態から第2クラッチC2のトルク容量が所定容量となる待機圧Pc2に制御されることで、その後の第1クラッチC1の解放過渡期においてエンジン回転速度Ninの吹き上がりが防止される。【選択図】図6
Bibliography:Application Number: JP20180197050