System for actuating a clutch for a torque converter
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0417968
(1982-09-14)
|
우선권정보 |
JP-0143072 (1978-11-20); JP-0143073 (1978-11-20) |
발명자
/ 주소 |
- Kobayashi Toshio (Mitaka JPX)
|
출원인 / 주소 |
- Fuji Jukogyo Kabushiki Kaisha (Tokyo JPX 03)
|
인용정보 |
피인용 횟수 :
8 인용 특허 :
6 |
초록
▼
A system for actuating, in a torque converter for an automotive vehicle, a fluid operated clutch for directly coupling an impeller of a torque converter with the turbine in a predetermined driving condition. Line pressure applied to a band servo of the brake band in the automatic transmission for th
A system for actuating, in a torque converter for an automotive vehicle, a fluid operated clutch for directly coupling an impeller of a torque converter with the turbine in a predetermined driving condition. Line pressure applied to a band servo of the brake band in the automatic transmission for the torque converter is used for actuating oil for the fluid operated clutch, and a control valve is provided in the pressure oil circuit controlled by a governor pressure. The control valve is so arranged that a port of the valve is opened to apply the line pressure to the clutch to couple the impeller with the turbine when the speed of the vehicle exceeds a predetermined mined valve.
대표청구항
▼
In a system for actuating a torque converter used for an engine and an automatic transmission connected to the engine for a vehicle, said transmission having a 1-2 shift valve, a 2-3 shift valve, and a lock-up clutch for coupling a turbine of the torque converter to a cover of the torque converter
In a system for actuating a torque converter used for an engine and an automatic transmission connected to the engine for a vehicle, said transmission having a 1-2 shift valve, a 2-3 shift valve, and a lock-up clutch for coupling a turbine of the torque converter to a cover of the torque converter in a lock-up condition of the lock-up clutch, a turbine shaft being connected to the turbine, the lock-up clutch including a piston slidably mounted in the cover for actuating the lock-up clutch into the lock-up condition, a passage communicating a chamber defined by the piston and the cover, conduits connected to said shift valves, respectively, for applying pressure fluid therefrom to a band servo of a brake band of the transmission depending on respective speed side positions of said shift valves for providing a D1 range, D2-range and D3-range, an oil pump operatively connected to said conduits via said shift valves, and a governor valve producing a governor pressure dependent on the vehicle speed, the improvement wherein said lock-up clutch further includes, a clutch disc supporting member being secured directly on a back side of said turbine, a clutch disc adjacent said piston being supported axially slidably and non-rotatably on said clutch disc supporting member, and a pressure plate being secured to said cover adjacent said clutch disc, means comprising an oil pump drive shaft disposed in the turbine shaft for driving the oil pump, said oil pump drive shaft forms therein a drive shaft passage which constitutes a part of said first-mentioned passage communicating with said chamber, a control valve having a spool, constituting means for being shifted by said governor pressure, and having a port connected to one of said conduits for applying pressure fluid to said band servo and another port communicating with said first-mentioned passage including said drive shaft passage for said lock-up clutch, an output of said 1-2 shift valve via said one of said conduits being connected to an apply side of said band servo, said control valve constituting means for communicating both said ports when said governor pressure exceeds a predetermined value for actuating said lock-up clutch in the lock-up condition via said pressure fluid when applied to said band servo from said one of said conduits, said predetermined value of the governor pressure corresponding to a vehicle speed within the D2-range when a throttle valve of the engine is positioned at a closed position and a partial opening position, so as to eliminate power loss due to slipping in the torque converter by coupling the impeller with the turbine in the high reduction ratio range, whereby fuel consumption and engine brake effect may be improved.
이 특허에 인용된 특허 (6)
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Morris Hugh C. (Peoria IL) Golan Kenneth F. (Pekin IL) Schmitt James L. (Washington IL), Control valve for a torque converter lock-up clutch or the like.
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Ohnuma ; Kiyoshi, Device for controlling a lock-up clutch in an automatic transmission.
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Arai Hajime (Aichi JA) Ohnuma Kiyoshi (Toyota JA), Fluid pressure control system for a hydraulic transmission with a lock-up clutch.
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Hoehn Richard F. (Pekin IL), Lock-up clutch flow-limiting and pressure-reducing valve.
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Mikel Steve A. (Farmington Hills MI) Blomquist Alfred P. (Farmington Hills MI), Lock-up system for torque converter.
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Hoetger Robert Arthur (St. Clair Shores MI) Hagaman James Albert (Madison Heights MI) Nortman William (Grosse Pointe MI), Transmission and torque converter with lock-up clutch.
이 특허를 인용한 특허 (8)
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Sakurai Yoshimi (Tanashi JPX) Aoki Takashi (Fujimi JPX) Nishikawa Masao (Tokyo JPX), Control device for a direct-coupling hydraulic clutch in a hydraulic torque converter.
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Wolfgang Kundermann DE, Hydrodynamic clutch device, in particular hydrodynamic torque converter.
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Bertram Ulrich,DEX ; Premiski Vladimir,DEX, Hydrokinetic torque converter with lock-up clutch.
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Ohkubo Masahiro (Kadoma JPX), Lock-up device for torque converter.
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Kawaguchi Toru,JPX ; Fukunaga Takao,JPX, Torque converter having a lockup clutch.
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Carne,Gary S., Transmission pressure modulation by orificed check valve.
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Simpson, William R.; Povirk, Jacob M.; Garbacz, Christopher G.; Plasencia, David B., Using inferred torque converter impeller speed to control an impeller clutch.
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Takeshima, Hiroaki; Komatsu, Yoshito, Work vehicle.
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