JPH0353631U

JPH0353631U -

Info

Publication number: JPH0353631U
Application number: JP11460189U
Authority: JP
Priority date: 1989-09-29
Filing date: 1989-09-29
Publication date: 1991-05-23

Description

[Brief explanation of drawings]

第１図は本考案の一実施例を示す自動変速機の
シンクロ機構の構成図、第２図は同上の作用を示
すフローチヤートである。１……クラツチ、２……メインシヤフト、５…
…カウンタシヤフト、１０……ギヤシフト・ユニ
ツト、１５……コントロール・ユニツト、１８…
…シンクロ用スリーブ、２４……シンクロ用アク
チユエータ、２９……クラツチ回転センサ、３０
……メインシヤフト回転センサ、３１……チエン
ジレバー・ユニツト。 FIG. 1 is a block diagram of a synchronizing mechanism for an automatic transmission showing one embodiment of the present invention, and FIG. 2 is a flowchart showing the operation of the same. 1...Clutch, 2...Main shaft, 5...
...Countershaft, 10...Gearshift unit, 15...Control unit, 18...
... Synchro sleeve, 24... Synchro actuator, 29... Clutch rotation sensor, 30
...Main shaft rotation sensor, 31...Change lever unit.

Claims

[Scope of Claim for Utility Model Registration] In an automatic transmission that operates a gear shift unit to change gear positions based on a target shift position signal from a change lever unit, the main shaft does not have a synchronizer;
A main shaft rotation sensor detects the rotation speed of the main shaft, a clutch rotation sensor detects the rotation speed of the clutch, and a deceleration sensor rotatably supported by the countershaft and meshed with a reduction gear fixed to the main shaft. a gear, a speed increasing gear rotatably supported by the counter shaft and meshing with a speed increasing gear fixed to the main shaft, and a synchronizer fixed to the counter shaft between the speed reducing gear and the speed increasing gear. gear, and is always in mesh with the synchronizing gear, and is selectively positioned at a deceleration position where it meshes with the deceleration gear, a speed increase position where it meshes with the speed increase gear, and a neutral position where it does not mesh with any gear. a synchronizing sleeve that moves the synchronizing sleeve to one of the above positions; and a synchronizing actuator that moves the synchronizing sleeve to any of the above positions; Compare the clutch rotational speeds Nc, and if Nm<Nc, a deceleration synchronization signal is sent to move the synchronizer sleeve to the deceleration position, and if Nm>Nc, the synchro sleeve is moved to the speed increase position. Output the speed-up synchro signal for movement to the synchro actuator, and
=Nc, a control unit for outputting a shift signal for operating a gear position to a target gear position based on the target shift position signal to the gear shift unit. .