SHIFT CONTROL DEVICE FOR SADDLE-RIDING TYPE VEHICLE

• Main Author: TANAKA MASATAKA
• Format: Patent
• Language: English; Japanese
• Published: 07.10.2021
• Subjects: ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; BLASTING; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; 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; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES; VEHICLES IN GENERAL; WEAPONS

To facilitate a downshift operation in a situation where a contact load between dowels is high.SOLUTION: A driven-side dowel speed estimation unit 102a estimates a rotation speed N1 of a driven-side dowel based on a rotation speed of a front wheel WF. A driving-side dowel speed estimation unit 102b estimates a rotation speed N2 of a driving-side dowel based on a rotation speed of a rear wheel WR. A dowel contact load estimation unit 103 estimates a contact load between the dowels based on a speed difference ΔN (=N2-N1) obtained by subtracting the rotation speed N1 of the driven-side dowel from the rotation speed N2 of the driving-side dowel. When the contact load between the dowels exceeds a contact load determination threshold value Nref, an ABS start unit 105 requests an ABS controller 600 to forcibly start an ABS. In response to the forcible start request, the ABS controller 600 starts the ABS when it is not actuated, and reduces a braking force of the rear wheel when the ABS is actuated.SELECTED DRAWING: Figure 7 【課題】ダボ間の接触荷重が高くなる状況下でのシフトダウン操作を容易にする。【解決手段】被動側ダボ速度推定部１０２ａは前輪WFの回転速度に基づいて被動側ダボの回転速度N1を推定する。駆動側ダボ速度推定部１０２ｂは後輪WRの回転速度に基づいて駆動側ダボの回転速度N2を推定する。ダボ接触荷重推定部１０３は、駆動側ダボの回転速度N2から被動側ダボの回転速度N1を減じた速度差ΔN（=N2-N1）に基づいてダボ間の接触荷重を推定する。ABS起動部１０５は、ダボ間の接触荷重が接触荷重判定閾値Nrefを超えているとABSコントローラ600へABSの強制起動を要求する。ABSコントローラ600は強制起動要求に応答して、ABSが作動していなければ起動し、ABSが作動していれば後輪の制動力を減じる。【選択図】図７