PROBLEM TO BE SOLVED: To provide a power transmission control device for a vehicle, which uses a double clutch transmission, the control device being designed to shorten a period required for a shift operation during shift down and to be capable of restricting vibration of a driving system caused after the shift operation during shift down.SOLUTION: "At a point when a selection gear change is altered from a change gear before alteration to a change gear after the alteration"(t1) during a shift operation for shift down, an engine torque Te is decreased by a predetermined amount a from a value Tem corresponding to the degree of opening of an acceleration and, thereafter, the engine torque Te is maintained at "Tem-a" (>torque Tx for half joint). Thereafter, "at a point when a predetermined period (bC) has passed from a point (t2) when an engine revolving speed Ne reaches a rotating speed Ni1 corresponding to the vehicle speed of the change gear after the alteration," the engine torque Te is returned from "Tem-a" to "Tem." The "predetermined period" is set to a time of 25 to 50% of the oscillation period C of the driving system of a vehicle.
【課題】ダブルクラッチトランスミッションを用いた車両の動力伝達制御装置であって、シフトダウン時の変速作動に要する期間が短く、且つ、シフトダウン時の変速作動完了後に発生する駆動系統の振動を抑制し得るものを提供すること。【解決手段】シフトダウン時の変速作動の際、「選択変速段が変更前変速段から変更後変速段に変更された時点」(t1)において、エンジントルクTeがアクセル開度相当値Temから所定量aだけ減少され、その後、エンジントルクTeが「Tem−a」(>半接合用トルクTx)に維持される。その後、「エンジン回転速度Neが変更後変速段の車速対応回転速度Ni1に達した時点(t2)から所定期間(b・C)が経過した時点」において、エンジントルクTeが「Tem−a」から「Tem」まで戻される(増大される)。前記「所定期間」は、車両の駆動系統の振動周期Cの25〜50%の時間に設定される。【選択図】図6
POWER TRANSMISSION CONTROL DEVICE FOR VEHICLE
車両の動力伝達制御装置
2016-01-12
Patent
Electronic Resource
Japanese
European Patent Office | 2022
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