JPH0278856U

JPH0278856U -

Info

Publication number: JPH0278856U
Application number: JP15993688U
Authority: JP
Priority date: 1988-12-07
Filing date: 1988-12-07
Publication date: 1990-06-18

Description

[Brief explanation of drawings]

第１図は本考案の実施例に係るトルクコンバー
タの要部縦断面図（第２図の部拡大図）、第２
図は本考案の実施例に係るトルクコンバータを備
えた自動変速機の要部縦断面図、第３図は従来の
トルクコンバータの要部縦断面図である。１…トルクコンバータ、２…ポンプカバー、３
…ポンプインペラ、４…タービンランナー、５…
ステータ、６…ロツクアツプピストン、１０…作
動室、１１…ロツクアツプ締結室、１２…ロツク
アツプ解除室、１５…クラツチ板、１６…連通路
、１８…リング体、１９…ストツパーリング。 FIG. 1 is a vertical cross-sectional view (an enlarged view of a portion of FIG. 2) of a main part of a torque converter according to an embodiment of the present invention;
The figure is a vertical cross-sectional view of a main part of an automatic transmission equipped with a torque converter according to an embodiment of the present invention, and FIG. 3 is a vertical cross-sectional view of a main part of a conventional torque converter. 1...Torque converter, 2...Pump cover, 3
...Pump impeller, 4...Turbine runner, 5...
Stator, 6... Lockup piston, 10... Working chamber, 11... Lockup engagement chamber, 12... Lockup release chamber, 15... Clutch plate, 16... Communication passage, 18... Ring body, 19... Stopper ring.

Claims

[Scope of utility model registration request]

a pump cover connected to the output shaft of the engine and forming a working chamber therein; a pump impeller connected and fixed to the pump cover within the working chamber; and a pump impeller arranged opposite to the pump impeller. A turbine runner that is rotationally driven via fluid as it rotates, a turbine shaft connected to the turbine runner, a stator that performs a torque increasing action, and a lock-up release chamber that disposes the working chamber on the side of the pump cover. A lock-up engagement chamber located on the turbine runner side is mounted so as to be slidable in the axial direction of the turbine shaft between the turbine runner and the pump cover, and the lock-up release chamber and the lock-up engagement chamber are partitioned into a lock-up engagement chamber located on the turbine runner side. a lock-up piston that can slide in the axial direction depending on the pressure difference between the fluids introduced into the pump cover to connect or separate a clutch plate provided on one side of the lock-up piston from the pump cover; The torque converter is provided with a communication passage for communicating the lock-up engagement chamber and the lock-up release chamber between the outer circumference of the lock-up piston and the pump cover, the communication passage being provided in the outer circumference of the lock-up piston. At the facing position, the fluid pressure in the lockup engagement chamber is actuated by the pressure difference between the fluid pressure in the lockup release chamber and the fluid in the lockup engagement chamber to increase the passage area of the communication passage. A torque converter characterized by being equipped with a variable passage area mechanism that reduces the passage area when it is high and increases it when it is low.