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특허 상세정보

Method and apparatus for hydraulic control of automatic transmission

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B60K-041/06    B60K-041/10   
미국특허분류(USC) 74/869 ; 74/867 ; 74/868
출원번호 US-0022538 (1979-03-21)
우선권정보 JP-0120980 (1978-09-29)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 18  인용 특허 : 4
초록

A transmission includes a plurality of friction units to effect shifting between gear ratios, one of which includes driving and driven elements which may operate with a speed differential at the time of shifting between gear ratios. A first or line pressure is generated which is variable in a first pattern corresponding approximately to the pattern of torque output of the vehicle engine. This pressure is supplied to a friction unit other than the one friction unit to operate such other friction unit. A second pressure is generated which is variable in a ...

대표
청구항

A hydraulic control system for an automatic power transmission mechanism including a driving member operatively connected to the input shaft of an engine of an automotive vehicle, which engine has a throttle which opens in degrees, a driven member, and frictional units each having fluid operated actuating means which are selectively operative and inoperative for producing a plurality of gear ratios between driving and driven members, comprising: means for generating a throttle fluid pressure which is proportional to the degree of throttle opening over mo...

이 특허를 인용한 특허 피인용횟수: 18

  1. Albert W. Brown. Continuously variable transmission and method of transferring loads in the same. USP2002076421903.
  2. Iwatsuki Kunihiro (Toyota JPX). Control system and method for an automatic transmission providing smooth engagement action. USP1987084685356.
  3. Schmidt, Thilo; Popp, Christian. Device for determining an operating state of at least one bidirectionally actuable hydraulic adjusting device of a shifting element of a transmission device. USP2015079086080.
  4. Albert W. Brown. Dual Drive continuously variable transmission. USP2002066398679.
  5. Brown, Albert W.. Dual drive continuously variable transmission. USP2005086926632.
  6. Ishimaru Wataru (No. 3-5-19 ; Ikego Zushi City JPX). Gear shift shock reducing apparatus for hydraulic control system of automatic transmission. USP1984054445401.
  7. Morino, Takuro; Moriyama, Shuji; Ito, Yoshio. Hydraulic control device. USP2016029266519.
  8. Sugano Kazuhiko (Zama JPX). Hydraulic control system for automatic transmission. USP1986074602529.
  9. Sugano Kazuhiko (Zama JPX). Hydraulic control system for automatic transmission. USP1985084532829.
  10. Brown, Albert W.. In-series two chain continuously variable transmission. USP2009067540815.
  11. Sugano, Kazuhiko. Lock-up clutch control valve assembly. USP1985124561528.
  12. Doering, Jeffrey Allen; Reed, Dennis Craig; Gibson, Alex O'Connor; Pietron, Gregory Michael; McCallum, James William Loch. Method and system for improving hybrid vehicle shifting. USP2015059031722.
  13. Doering, Jeffrey Allen; Reed, Dennis Craig; Gibson, Alex O'Connor; Pietron, Gregory Michael; McCallum, James William Loch. Method and system for improving hybrid vehicle shifting. USP20180710011263.
  14. Nagaoka Mitsuru (Hiroshima JPX) Yasuno Mitsuo (Hiroshima JPX). Shift up clutch control in a multiple clutch type gear transmission for automobile. USP1985054517859.
  15. Kubo Seitoku (Toyota JPX) Kuramochi Koujiro (Okazaki JPX) Kyushima Tatsuo (Toyota JPX). Transmission control system with modified back pressure accumulator. USP1984014428258.
  16. Kubo Seitoku (Toyota JPX) Kuramochi Koujiro (Okazaki JPX) Kyushima Tatsuo (Toyota JPX). Transmission control system with modified friction engaging mechanism actuating pressure. USP1983074394827.
  17. Moorman, Steven P.; Bock, Peter Donald. Transmission hydraulic control system having an accumulator. USP2013118591365.
  18. Yasue Hideki (Toyota JPX) Fukumura Kagenori (Toyota JPX). Twin type hydraulic pressure control device with individual line pressure regulation valves for two stage automatic tran. USP1988104779492.