JPS58111460U

JPS58111460U - Line pressure adjustment device in hydraulically operated transmissions

Info

Publication number: JPS58111460U
Application number: JP821282U
Authority: JP
Inventors: 前園　正和
Original assignee: 本田技研工業株式会社
Priority date: 1982-01-26
Filing date: 1982-01-26
Publication date: 1983-07-29

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来式装置の回路爾、第２図は本考案装置の１
例の回路図、第３図はその作動状態の要部の截断面図で
ある。１・・・・・・油圧源、２・・・・・・トルクコンバー
タ、３・・・・・・制御回路、４・・・・・・弁筺、４
ａ・・・・・・流入ポート、４ｂ”・・・・・・第１流
出ポート、４Ｃ・・・・・・第２流出ポート、５・・・
・・・スプール弁、５ａ・・・・・・第１ランド、５ｂ
・・・・・・第２ランド、Ｌｌ・・・・・・第１油路、
Ｌ２・・・・・・第２油路、Ｌ３・・・・・・第３油路
。Figure 1 shows the circuit diagram of the conventional device, and Figure 2 shows the circuit diagram of the device of the present invention.
The circuit diagram of the example, FIG. 3, is a cutaway sectional view of the main part in its operating state. 1... Hydraulic source, 2... Torque converter, 3... Control circuit, 4... Valve housing, 4
a...Inflow port, 4b"...First outflow port, 4C...Second outflow port, 5...
...Spool valve, 5a...First land, 5b
...Second land, Ll...First oilway,
L2...Second oil passage, L3...Third oil passage.

Claims

[Claims for Utility Model Registration] 1. Pressure oil from a hydraulic source 1 driven by an engine is guided to a control circuit 3 of a hydraulically operated main transmission connected to the engine via a torque converter 2 (a first oil path). L1 is provided with a valve housing 4 connected to the inflow port 4a, and the valve housing 41 has a first oil passage L2 connected to the torque converter 2.
The outflow port 4b is provided with a second outflow port 4C that connects the third oil path L3 for drain, and an internal spool valve 5, and the spool valve 5 is connected to the line pressure of the first oil path L1 by a pressure regulating spring. 6, the inlet port 4a and each outlet port 4b;
4C, the spool valve 5 has the inflow port 4a and the second
A line pressure adjustment device in a hydraulically operated transmission comprising at least two stages of first and second lands 5a and 5b, which stepwise increase the opening degree of the second outflow port (4C) in a communicating area with the outflow port (outflow port) (4C). . 2. The line pressure adjustment device in a hydraulically operated transmission according to claim 1, wherein the second oil passage L2 is provided with an orifice 14 for regulating the amount of oil supplied to the torque converter 2. .