CONTROL DEVICE FOR HYBRID VEHICLE

To provide a control device for a hybrid vehicle, capable of suppressing the occurrence of a shock caused by starting an engine or eliminating backlash in a power transmission path.SOLUTION: There is provided an electronic control device 90 for a hybrid vehicle 10 including: an engine 12 and an electric motor MG, as a driving force source PG; a connecting/disconnecting clutch K0 for connecting and disconnecting power transmission between the engine 12 and the electric motor MG; and a torque converter 24 which includes a lock-up clutch 40 and is provided in a power transmission path PT between the driving force source PG and a driving wheel 14. In traveling with driving torque output from only the electric motor MG, when re-acceleration is requested, and target system shaft torque Tsystgt is equal to or greater than second determination torque Tsystgt_jdg2, the electronic control device 90 allows an LU instruction pressure Plu for controlling the connection and disconnection of the lock-up clutch 40 to be held at a half-engagement pressure PA for putting the lock-up clutch 40 in a half-engaged state, until differential rotation ΔNlu of the lock-up clutch 40 becomes equal to or greater than prescribed difference ΔNlu_jdg.SELECTED DRAWING: Figure 1 【課題】エンジンが始動されたり動力伝達経路におけるガタが詰められたりすることによるショックの発生を抑制できるハイブリッド車の制御装置を提供する。【解決手段】駆動力源ＰＧとしてのエンジン１２及び電動機ＭＧと、エンジン１２及び電動機ＭＧの間の動力伝達を断接する断接クラッチＫ０と、ロックアップクラッチ４０を有し且つ駆動力源ＰＧ及び駆動輪１４の間の動力伝達経路ＰＴに設けられたトルクコンバータ２４と、を備えたハイブリッド車１０の、電子制御装置９０は、電動機ＭＧのみから駆動トルクを出力させた走行において再加速が要求され且つ目標システム軸トルクＴsystgtが第２判定トルクＴsystgt_jdg2以上である場合は、ロックアップクラッチ４０の差回転ΔＮluが所定差ΔＮlu_jdg以上となるまで、ロックアップクラッチ４０の断接を制御するＬＵ指示圧Ｐluを半係合状態となる半係合圧ＰＡで待機させる。【選択図】図１