SHIFT CONTROL DEVICE FOR HYBRID VEHICLE

• Main Authors: ANZAI KOHEI, SAEKI HIDEYUKI
• Format: Patent
• Language: English; Japanese
• Published: 05.10.2017
• 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; CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To prevent an excessive tension from acting on a chain for connecting an automatic transmission and a motor generator when a hybrid vehicle is moved from a parking state on a ramp of a steep gradient.SOLUTION: A shift control device 40 for a hybrid vehicle 1 comprises: an automatic transmission 6 having a shift actuator 16 capable of switching gear stages 10 to 13 automatically; and a motor generator 28 connected to the output side of the automatic transmission 6 by first-second chains 37-38. The shift control device further comprises: a gradient detection part 45 for detecting the gradient of a road surface; a vehicle speed detection part 46 for detecting the vehicle speed; a control part 54 for locking the shift position of a select lever 18 at a P-range position in the cases where the gradient of the road surface is larger than a preset one, where the vehicle speed is lower than a preset one, where the shift position of the select lever 18 of the automatic transmission 6 is selected into a P range position by the operation of a driver, and where the automatic transmission 6 is set in a neutral position.SELECTED DRAWING: Figure 1 【課題】急勾配の坂路でハイブリッド車両を駐車状態から移動するときに、自動変速機とモータジェネレータとを連結するチェーンに過大な張力が作用しないようにすること。【解決手段】ギア段１０〜１３を自動的に切り換え可能なシフトアクチュエータ１６を有する自動変速機６と、自動変速機６の出力側に第１・第２チェーン３７・３８によって連結されるモータジェネレータ２８を備えたハイブリッド車両１の変速制御装置４０であって、路面の勾配を検出する勾配検出部４５と、車速を検出する車速検出部４６と、路面の勾配が予め設定された勾配よりも大きく、車速が予め設定された車速よりも小さく、運転者の操作により自動変速機６のセレクトレバー１８のシフト位置がＰレンジ位置に選択された状態であり、自動変速機６がニュートラル状態に設定された場合、セレクトレバー１８のシフト位置をＰレンジ位置にロックする制御部５４を備える。【選択図】図１