PROBLEM TO BE SOLVED: To provide a shift control unit capable of completing the shift of an engine drive system with a small response delay at a time of switching from an electric travel (EV) mode to a hybrid travel (HEV) mode.SOLUTION: While it is determined that there occurs no EV→HEV switch request accompanied by engine start and an EV mode continues in S11, a high clutch H/C is precharged by hydraulic oil from an electric pump E/P S12. At a time of occurrence of an EV→HEV switch request, a pressure of the high clutch H/C in the precharged state is reduced in S14 and a low brake L/B (a seal structure of an actuation chamber is configured into a high seal structure that minimizes hydraulic oil leakage) is controlled to be engaged in S15 at a time of low speed position request, and the pressure of the high clutch H/C in the precharged state is increased to control the high clutch H/C to be engaged in S16 at a time of a high speed position request in response to a target gear position determined in S13.
【課題】電気走行(EV)モードからハイブリッド走行(HEV)モードへの切り替え時におけるエンジン駆動系の変速を小さな応答遅れで完遂させ得る変速制御装置を提案する。【解決手段】S11でエンジン始動を伴うEV→HEV切り替え要求がないと判定するEVモード継続中、S12で電動ポンプE/Pからの作動油によりハイクラッチH/Cをプリチャージしておく。EV→HEV切り替え要求発生時は、S13で判定した目標変速段に応じて、低速段要求時はS14でハイクラッチH/Cをプリチャージ状態から圧力低下させると共に、S15でローブレーキL/B(作動室のシール構造を作動油漏洩量が最少となる高シール構造と成す)を締結進行させ、高速段要求時はS16でハイクラッチH/Cをプリチャージ状態からの圧力上昇により締結進行させる。【選択図】図4
HYBRID ELECTRIC VEHICLE SHIFT CONTROL UNIT
ハイブリッド車両の変速制御装置
2015-12-21
Patent
Electronic Resource
Japanese
IPC: | 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 / 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 |