JPS63190650U

JPS63190650U -

Info

Publication number: JPS63190650U
Application number: JP1987083539U
Authority: JP
Priority date: 1987-05-29
Filing date: 1987-05-29
Publication date: 1988-12-08

Description

[Brief explanation of the drawing]

第１図は本考案の実施例を示す車両の自動変速
装置のフローチヤート、第２図は同じく車速とス
ロツトルの開度の関係を示すグラフ、第３図は同
じく油圧制御回路図、第４図は同じく制御ブロツ
ク図、第５図は従来例を示す車両の自動変速装置
のフローチヤート、第６図は車速と駆動力の関係
を示すグラフ、第７図は車速とスロツトル開度の
関係を示すグラフである。１０：車速検出器、１１：エンジン、１２：ス
ロツトル、１３：スロツトル開度検出器、１４：
トランスミツシヨン、１５：速度段切替手段、１
６：制御装置、２３：アクセルペダル、θ：スロ
ツトル開度、θＯ：スロツトル開度の基準値、Ｓ
：車速、ａ：第一ポイント、ｂ：第二ポイント、
ｃ：第三ポイント、ｄ：第四ポイント、ｅ：第五
ポイント、ｆ：第六ポイント、ｇ：第七ポイント
、ｈ：第八ポイント。 Fig. 1 is a flowchart of an automatic transmission system for a vehicle showing an embodiment of the present invention, Fig. 2 is a graph showing the relationship between vehicle speed and throttle opening, Fig. 3 is a hydraulic control circuit diagram, and Fig. 4 is a graph showing the relationship between vehicle speed and throttle opening. 5 is a flowchart of a conventional vehicle automatic transmission system, FIG. 6 is a graph showing the relationship between vehicle speed and driving force, and FIG. 7 is a graph showing the relationship between vehicle speed and throttle opening. It is a graph. 10: Vehicle speed detector, 11: Engine, 12: Throttle, 13: Throttle opening detector, 14:
Transmission, 15: Speed stage switching means, 1
6: Control device, 23: Accelerator pedal, θ: Throttle opening, θO: Throttle opening reference value, S
: Vehicle speed, a: First point, b: Second point,
c: third point, d: fourth point, e: fifth point, f: sixth point, g: seventh point, h: eighth point.

Claims

[Scope of utility model registration request]

A vehicle speed detector that detects the vehicle speed, a throttle opening detector that detects the opening of a throttle that makes the output of the engine variable, and a speed gear switching means that switches the speed gear of the transmission according to the vehicle speed, A control device is provided that controls switching of the speed gear switching means based on output signals from the vehicle speed detector and the throttle opening detector, and the control device controls the throttle opening from the throttle opening detector to be smaller than a reference value. 1. An automatic transmission device for a vehicle, characterized in that it has a changing function of changing a downshift switching point from a high speed gear to a low speed gear to a vehicle speed higher than that in a normal driving state.