JPH01148151U

JPH01148151U -

Info

Publication number: JPH01148151U
Application number: JP1988042995U
Authority: JP
Priority date: 1988-04-01
Filing date: 1988-04-01
Publication date: 1989-10-13

Description

[Brief explanation of the drawing]

第１図は本考案変速制御装置の概念図、第２図
は本考案装置の一実施例を示す車両用パワートレ
ーンの制御システム図、第３図乃至第６図は夫々
同例における変速制御用コンピュータの制御プロ
グラムを示すフローチヤート、第７図ａ，ｂは夫
々１→２変速用ギヤ比設定値の特性図、第８図ａ
，ｂは夫々１→４変速用ギヤ比設定値の特性図、
第９図は自動変速機の変速パターン図、第１０図
は従来装置による変速動作波形図、第１１図は本
考案装置による変速動作波形図である。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ュータ、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、Ａ
，Ｂ…変速制御用シフトソレノイド、１６…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、１９…アイド
ルスイツチ。 Fig. 1 is a conceptual diagram of the shift control device of the present invention, Fig. 2 is a control system diagram of a vehicle power train showing one embodiment of the device of the present invention, and Figs. 3 to 6 are for shift control in the same example. Flowchart showing the computer control program, Figures 7a and 7b are characteristic diagrams of gear ratio setting values for 1→2 shifting, and Figure 8a
, b are characteristic diagrams of gear ratio setting values for 1→4 shifting, respectively;
FIG. 9 is a shift pattern diagram of an automatic transmission, FIG. 10 is a shift operation waveform diagram by a conventional device, and FIG. 11 is a shift operation waveform diagram by the device of the present invention. 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, A
, B...Shift solenoid for speed change control, 16...Duty solenoid for line pressure control, 17...Input rotation sensor, 18...Output rotation sensor, 19...Idle switch.

Claims

[Claims for Utility Model Registration] Various friction elements of the transmission gear mechanism are selectively operated to determine a predetermined gear position, and by changing the operating friction elements, the gear is shifted to another gear position, and the transmission gear mechanism is operated. In an automatic transmission that performs a corresponding upshift when a gear ratio represented by an input/output rotation ratio of a transmission gear mechanism reaches a set gear ratio after an upshift is determined due to the engine transitioning to a power-off state, the upshift described above is performed. a power-on detection means for detecting that the engine has returned to the power-on state before shifting; and a gear shift for delaying the upshift until the gear ratio becomes the gear ratio in the pre-shifting state when the engine returns to the power-on state. 1. A shift control device for an automatic transmission, characterized in that the shift control device is provided with a delay shift.