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특허 상세정보

Pressure control system for lock-up clutch in automotive automatic power transmission with compensation of fluid pressur

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F16D-033/16   
미국특허분류(USC) 192/329 ; 192/33 ; 192/331 ; 192/333
출원번호 US-0586751 (1990-09-21)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 12  인용 특허 : 0
초록

A pressure control system for a lock-up clutch includes a variable flow restriction orifice disposed in a lubricating circuit. The variable flow restriction orifice is operated depending upon a discharge rate of an oil pump so that working fluid flow through the lubricating circuit is restricted when the discharge rate of the oil pump is smaller than a predetermined value.

대표
청구항

A pressure control system for a lock-up clutch of a lock-up type automotive automatic power transmission, comprising: a torque converter associated with an input element inputting driving torque from a prime mover and an output element for outputting driving torque, said torque converter including a lock-up clutch for establishing and releasing direct and mechanical connection between said input and output elements; a lock-up control fluid circuit connected to a pressurized fluid source which has a variable discharge rate depending upon an engine revolut...

이 특허를 인용한 특허 피인용횟수: 12

  1. Albert W. Brown. Continuously variable transmission and method of transferring loads in the same. USP2002076421903.
  2. Gierer, Georg; Schmidt, Thilo. Device for the operation of a starter mechanism that can be brought into active connection with a hydraulic supply circuit of a transmission unit. USP2009117617918.
  3. Albert W. Brown. Dual Drive continuously variable transmission. USP2002066398679.
  4. Brown, Albert W.. Dual drive continuously variable transmission. USP2005086926632.
  5. Shimizu, Tetsuya; Tsuchida, Kenichi; Hyodo, Yoshimitsu; Ishikawa, Kazunori; Sugiura, Hironori; Nishio, Satoshi; Kojima, Kazuki. Hydraulic control apparatus for automatic transmission. USP2014118886427.
  6. Sakai Hiromasa,JPX. Hydraulic control device for automatic transmission. USP2000056056094.
  7. Jang Jaeduk (Kyungki-do KRX) Park Donghoon (Kyungki-do KRX) Lim Kibeen (Kyungki-do KRX). Hydraulic control system for automatic transmission. USP1997015590751.
  8. Sakai Hiromasa,JPX ; Sugihara Jun,JPX. Hydraulic pressure control device of automatic transmission. USP2000046045480.
  9. Sakai Hiromasa,JPX ; Sugihara Jun,JPX. Hydraulic pressure control device of automatic transmission. USP2000116142906.
  10. Brown, Albert W.. In-series two chain continuously variable transmission. USP2009067540815.
  11. Nakatani Kazushi (Obu JPX) Takagi Akira (Obu JPX) Yokoyama Hajime (Toyota JPX). Lockup control system for automatic transmission. USP1997125701982.
  12. Fessler, Bernd; Reiter, Friedrich. Oil supplying system for an automatic transmission with a hydrodynamic starting device. USP2003126668978.