DRIVE CONTROL DEVICE FOR HYBRID VEHICLE

• Main Authors: SUGIURA MASANORI, NISHIYAMA MASATERU
• Format: Patent
• Language: English; Japanese
• Published: 27.10.2014
• Subjects: ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; BLASTING; COMBUSTION ENGINES; CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; CONTROLLING COMBUSTION ENGINES; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; LIGHTING; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To allow shifting time of a hybrid vehicle in which engine power is transmitted through a clutch and a transmission to wheels to be reduced and to allow shock during shift control to be reduced.SOLUTION: A drive control device for a hybrid vehicle is provided which, when a gear shift instruction (an upshift command or a downshift command) is generated, releases a clutch 16 to switch a gear position of a transmission 13 and then performs a shift control for engagement of the clutch 16. At that time, the drive control device performs a MG (Motor Generator) rotational speed control by which the rotational speed of a MG 12 is feed-back controlled so that rotational speed of an engine 11 accords with target rotational speed (rotational speed slightly higher or slightly lower than input shaft rotational speed for example) based on the input shaft rotational speed of the transmission 13 while releasing the clutch 16. This allows a difference in rotational speed between the engine 11 side and the transmission 13 side (a difference between the engine rotational speed and the input shaft rotational speed of the transmission 13) to be quickly reduced while releasing the clutch 16 and allows engagement of the clutch 16 to be started early. 【課題】エンジンの動力がクラッチと変速機を介して車輪側に伝達されるハイブリッド車の変速時間を短縮できると共に変速制御時のショックを抑制できるようにする。【解決手段】変速指令（アップシフト指令又はダウンシフト指令）が発生したときに、クラッチ１６を開放して、変速機１３の変速段を切り換えた後、クラッチ１６を係合する変速制御を実行する。その際、クラッチ１６の開放中にエンジン１１の回転速度を変速機１３の入力軸回転速度に基づいた目標回転速度（例えば入力軸回転速度よりも少し高い回転速度又は少し低い回転速度）に一致させるようにＭＧ１２の回転速度をフィードバック制御するＭＧ回転速度制御を実行する。これにより、クラッチ１６の開放中にエンジン１１側と変速機１３側の回転速度差（エンジン回転速度と変速機１３の入力軸回転速度との差）を速やかに小さくして、クラッチ１６の係合を早期に開始できるようにする。【選択図】図１