JPH0225765U

JPH0225765U -

Info

Publication number: JPH0225765U
Application number: JP10401688U
Authority: JP
Priority date: 1988-08-08
Filing date: 1988-08-08
Publication date: 1990-02-20

Description

[Brief explanation of drawings]

第１図は本考案ライン圧制御装置の概念図、第
２図は本考案装置の一実施例を示す自動車パワー
トレーンの制御システム図、第３図乃至第６図は
同例における変速制御用コンピユータのライン圧
制御及び変速制御プログラムを示すフローチヤー
ト、第７図はライン圧制御ソレノイド駆動デユー
テイの特性図、第８図は同デユーテイの補正量に
関する或る一瞬のＲＡＭデータを例示する線図、
第９図は変速中のライン圧ソレノイド駆動デユー
テイに対するタイマ計測時間の関係線図、第１０
図は第９図中α，β，γで示すソレノイド駆動デ
ユーテイの時の変速動作タイムチヤート、第１１
図は変速中におけるイナーシヤフエーズの発生状
況を示す変速動作タイムチヤートである。１…電子制御燃料噴射エンジン、２…自動変速
機、３…デイフアレンシヤルギヤ、４…駆動車輪
、５…エンジン制御用コンピユータ、６…エンジ
ン回転センサ、７…車速センサ、８…スロツトル
センサ、９…吸入空気量センサ、１０…トルクコ
ンバータ、１１…変速歯車機構、１４…変速制御
用コンピユータ、１５…コントロールバルブ、１
５ａ，１５ｂ…変速制御用シフトソレノイド、１
６…ライン圧制御用デユーテイソレノイド、１７
…入力回転センサ、１８…出力回転センサ、２０
…警報装置。 Fig. 1 is a conceptual diagram of the line pressure control device of the present invention, Fig. 2 is a control system diagram of an automobile power train showing an embodiment of the device of the present invention, and Figs. 3 to 6 are a computer for speed change control in the same example. 7 is a characteristic diagram of line pressure control solenoid drive duty, and FIG. 8 is a diagram illustrating instantaneous RAM data regarding the correction amount of the duty.
Figure 9 is a diagram showing the relationship between timer measurement time and line pressure solenoid drive duty during gear shifting;
The figure is a shift operation time chart for the solenoid drive duty indicated by α, β, and γ in Figure 9.
The figure is a shift operation time chart showing the occurrence of inertia phase during a shift. DESCRIPTION OF SYMBOLS 1...Electronically controlled fuel injection engine, 2...Automatic transmission, 3...Differential gear, 4...Drive wheel, 5...Engine control computer, 6...Engine rotation sensor, 7...Vehicle speed sensor, 8...Throttle sensor , 9... Intake air amount sensor, 10... Torque converter, 11... Speed change gear mechanism, 14... Speed change control computer, 15... Control valve, 1
5a, 15b...Shift solenoid for speed change control, 1
6...Duty solenoid for line pressure control, 17
...Input rotation sensor, 18...Output rotation sensor, 20
...Alarm device.

Claims

[Scope of Claim for Utility Model Registration] Various friction elements of a transmission gear mechanism are selectively hydraulically activated by line pressure to select a predetermined gear, and by changing the operating friction elements, the gear can be shifted to other gears. In an automatic transmission, an input rotation sensor detects the input rotation speed of the transmission gear mechanism, an output rotation sensor detects the output rotation speed of the transmission gear mechanism, and a rotation speed between the input and output rotation speeds is determined based on signals from these sensors. an inertia phase time measuring means for measuring the time during which the gear ratio expressed by the ratio of 1. A line pressure abnormality determining device for an automatic transmission, comprising: line pressure adjusting means for adjusting the correction amount; and line pressure abnormality determining means for determining an abnormality when the amount of correction exceeds a predetermined range.