JPS6256441U

JPS6256441U -

Info

Publication number: JPS6256441U
Application number: JP1985150066U
Authority: JP
Priority date: 1985-09-30
Filing date: 1985-09-30
Publication date: 1987-04-08
Anticipated expiration: 2000-09-30
Also published as: JPH0511066Y2

Description

[Brief explanation of drawings]

第１図は本考案の一実施例に係る自動変速装置
の概略構成図、第２図はそのシフトパターンの一
例を表す概念図、第３図ａ，ｂはそのＤＰレンジ
及びＤＥレンジのシフトマツプの一例をそれぞれ
表すグラフ、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〜第９図
ａ，ｂ，ｃ，ｄ，ｅ，ｆはその制御プログラムの
一例を表す流れ図、第１０図はその変速時におけ
るエンジン回転数及びクラツチ回転数の経時変化
の一例を示すグラフ、第１１図はシフトアツプ操
作時の作動概念図、第１２図はシフトダウン操作
時の作動概念図である。図面中、１１はエンジン、１５は摩擦クラツチ
、１７は歯車式変速機、２１は燃料噴射ポンプ、
２３はコントロールラツク、２５は電磁アクチユ
エータ、３３はエアシリンダ、４７，４９はエア
タンク、５３は電磁弁、６３は変速段選択スイツ
チ、６５はギヤシフトユニツト、７１はコントロ
ールユニツト、６１はエンジンレバー、８１はア
クセルペダル、８７はブレーキセンサ、９３はマ
イクロコンピユータ、１０７はホイールブレーキ
、１１０はブレーキ異常センサである。 Fig. 1 is a schematic configuration diagram of an automatic transmission according to an embodiment of the present invention, Fig. 2 is a conceptual diagram showing an example of its shift pattern, and Figs. 3 a and b are shift maps of the DP range and DE range. Graphs each representing an example. FIG. 4 is a graph representing an example of a map for determining the duty rate. FIGS. 5 to 9 a, b, c, d, e, f represent an example of the control program. Flowchart, Fig. 10 is a graph showing an example of changes over time in engine speed and clutch rotation speed during gear shifting, Fig. 11 is a conceptual diagram of operation during upshift operation, and Fig. 12 is a conceptual diagram of operation during downshift operation. It is. In the drawing, 11 is an engine, 15 is a friction clutch, 17 is a gear type transmission, 21 is a fuel injection pump,
23 is a control rack, 25 is an electromagnetic actuator, 33 is an air cylinder, 47 and 49 are air tanks, 53 is a solenoid valve, 63 is a gear selection switch, 65 is a gear shift unit, 71 is a control unit, 61 is an engine lever, and 81 is a An accelerator pedal, 87 a brake sensor, 93 a microcomputer, 107 a wheel brake, and 110 a brake abnormality sensor.

Claims

[Scope of utility model registration request]

a friction clutch connected to the engine, a clutch actuator for operating the friction clutch, and a gear type transmission connected to the friction clutch;
A gear position switching means for switching the gear position of the gear type transmission, and a control device for controlling the operation of the clutch actuator and the gear position switching means based on the driver's intention and the running conditions of the vehicle. In an automatic transmission, based on outputs from a brake abnormality sensor that detects malfunction of a wheel brake and a brake sensor that detects when the brake pedal is depressed, it is determined whether the wheel brake malfunctions and the brake pedal is depressed. 1. A shift control device for an automatic transmission, characterized by comprising a brake fail processing means for braking a vehicle by engine braking.