JPH0248622U

JPH0248622U -

Info

Publication number: JPH0248622U
Application number: JP1988128999U
Authority: JP
Priority date: 1988-09-30
Filing date: 1988-09-30
Publication date: 1990-04-04

Description

[Brief explanation of the drawing]

第１図は本考案の実施例による自動変速装置の
全体構成を示すブロツク図、第２図は第１図に示
した装置におけるシフトパターンの一例を説明す
る概念図、第３図は第２図のシフトパターンにお
けるＰＷおよびＤレンジのシフトマツプを示す線
図、第４図はそのデユーテイ率決定のためのマツ
プの一例を表すグラフ、第５図は走行中、クラツ
チ接、クラツチ切等のバルブの開閉を説明する状
態図、第６図は第１図に示したブロツク図におけ
る制御プログラムのメインルーチンを示すフロー
チヤート、第７図はその制御プログラムの内の始
動ルーチンを示すフローチヤート、第８図はその
制御プログラムの内の発進ルーチンを示すフロー
チヤート、第９図はその制御プログラムの内の［
ＣＬＬＥ］ルーチンを示すフローチヤート、第１
０図はクラツチストロークとそのストロークに置
けるクラツチの作動時間との関係を示す線図、第
１１図は第８図に示した発進処理における微動処
理を説明するための線図、第１２図はクラツチス
トロークのヒステリシス特性図、第１３図は従来
の自動変速装置の特性を表わす線図である。１１……エンジン、１５……摩擦クラツチ、１
７……歯車式変速機、２１……燃料噴射ポンプ、
２３……コントロールラツク、２５……電磁アク
チユエータ、２７……エンジン回転センサ、３３
……エアシリンダ、３５……クラツチストローク
センサ、５３……電磁弁、７５……ギヤ位置スイ
ツチ、７９……車速センサ、９５……マイクロコ
ンピユータ、９７……記憶装置。 FIG. 1 is a block diagram showing the overall configuration of an automatic transmission according to an embodiment of the present invention, FIG. 2 is a conceptual diagram illustrating an example of a shift pattern in the device shown in FIG. 1, and FIG. Fig. 4 is a graph showing an example of a map for determining the duty rate, Fig. 5 is a diagram showing the shift map of PW and D ranges in the shift pattern of FIG. 6 is a flowchart showing the main routine of the control program in the block diagram shown in FIG. 1, FIG. 7 is a flowchart showing the starting routine of the control program, and FIG. A flowchart showing the starting routine in the control program, FIG.
CLLE] Flowchart showing the routine, 1st
Figure 0 is a diagram showing the relationship between the clutch stroke and the clutch operation time during that stroke, Figure 11 is a diagram to explain the slight movement process in the start process shown in Figure 8, and Figure 12 is a diagram showing the relationship between the clutch stroke and the clutch operation time during that stroke. Stroke hysteresis characteristic diagram FIG. 13 is a diagram showing the characteristics of a conventional automatic transmission. 11...Engine, 15...Friction clutch, 1
7...Gear type transmission, 21...Fuel injection pump,
23... Control rack, 25... Electromagnetic actuator, 27... Engine rotation sensor, 33
... Air cylinder, 35 ... Clutch stroke sensor, 53 ... Solenoid valve, 75 ... Gear position switch, 79 ... Vehicle speed sensor, 95 ... Microcomputer, 97 ... Memory device.

Claims

[Scope of Claim for Utility Model Registration] A friction clutch connected to the engine, an actuator for the friction clutch, an engine rotation sensor for detecting the rotation speed of the engine, a gear type transmission connected to the friction clutch, and a clutch stroke. A clutch stroke sensor that detects the amount, an accelerator sensor that detects the accelerator position,
The gear position switch that detects the gear position, the engine speed from the engine rotation sensor, the clutch stroke amount, and the accelerator position are input, and the duty ratio for the clutch actuator and the accelerator pseudo signal voltage for the fuel injection device are determined. The control unit is configured to set the accelerator position when the gear position is in reverse and the engine rotation and clutch rotation are completely synchronized and the clutch is maintained in the engaged state. The clutch stroke is changed in stages by setting the clutch stroke amount to the friction clutch actuator to a value corresponding to the target engine rotation in response to the fact that the friction clutch actuator has increased from a predetermined depression amount. automatic transmission for vehicles.