[특허]Hydraulic control apparatus for vehicle power transmitting system having continuously variable transmission

[미국특허] Hydraulic control apparatus for vehicle power transmitting system having continuously variable transmission 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16H-011/02
출원번호	US-0476601 (1990-02-07)
우선권정보	JP-0033147 (1989-02-13); JP-0033150 (1989-02-13); JP-0033151 (1989-02-13); JP-0091072 (1989-04-11)
발명자 / 주소	Itoh Hiroshi (Toyota JPX) Sugaya Masami (Susono JPX) Soga Yoshinobu (Susono JPX) Morisawa Kunio (Toyota JPX) Habuchi Ryoji (Aichi JPX) Kouno Katsumi (Toyota JPX) Hattori Yuji (Susono JPX)
출원인 / 주소	Toyota Jidosha Kabushiki Kaisha (Toyota JPX 03)
인용정보	피인용 횟수 : 92 인용 특허 : 9

초록 ▼

A hydraulic control apparatus for a vehicle power transmitting system having a continuously variable transmission having a first and a second shaft, a pair of variable-diameter pulleys provided on the shafts, a belt connecting the pulleys, and two hydraulic actuators for changing diameters of the pulleys. The apparatus includes a directional control valve for supplying a fluid from a pressure line to one of the two actuators while discharging the fluid from the other actuator, a first fluid passage connected to the directional control valve, for primarily supplying the fluid from the pressure line to a driving side actuator of the two actuators which is provided on a driving one of the first and second shafts, a second fluid passage connected to the directional control valve, for primarily supplying the fluid from the pressure line to a driven side actuator of the hydraulic actuators, and a flow restrictor for restricting a flow of the fluid through the first fluid passage so that a fluid flow resistance of the first fluid passage is higher than a fluid flow resistance of the second fluid passage.

대표청구항 ▼

A hydraulic control apparatus for a power transmitting system for an automotive vehicle having a continuously variable transmission which has a first and a second shaft, a pair of variable-diameter pulleys provided on the first and second shafts, respectively, a belt connecting the pulleys, and a pair of hydraulic actuators for changing effective diameters of the pulleys, the apparatus including a directional control valve for supplying a working fluid from a pressure line to one of said pair of hydraulic actuators while discharging the working fluid from the other hydraulic actuator, for controlling a speed ratio of the transmission, wherein the improvement comprises: a first fluid passage connected to said directional control valve, for primarily supplying said working fluid from said pressure line to a driving side actuator of said pair of hydraulic actuators which is provided on a driving one of said first and second shafts; a second fluid passage connected to said directional control valve, for primarily supplying the working fluid from said pressure line to a driven side actuator of said pair of hydraulic actuators; and flow restrictor means for restricting a flow of the fluid through said first fluid passage so that a fluid flow resistance of said first fluid passage is higher than a fluid flow resistance of said second fluid passage.

이 특허에 인용된 특허 (9) 인용/피인용 타임라인 분석

Rattunde Manfred (Bad Homburg DEX), Cone-pulley belt-type transmission.
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Soga Yoshinobu (Susono JPX) Kouno Katsumi (Susono JPX) Sugaya Masami (Susono JPX) Okawa Susumu (Aichi JPX), Control device for belt-and-pulley type continuously variable transmission for a vehicle.
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Abo Keiju (Yokosuka JPX) Oshidari Toshikazu (Yokohama JPX), Control system for transmission.
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Ito Hiroshi (Toyota JPX), Hydraulic apparatus for a continuously variable transmission.
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Kouno Katsumi (Susono JPX) Okawa Susumu (Aichi JPX) Sugaya Masami (Susono JPX) Soga Yoshinobu (Susono JPX), Hydraulic control system for continuously variable transmission for automotive vehicle.
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Kouno Katsumi (Susono JPX) Okawa Susumu (Aichi JPX) Sugaya Masami (Susono JPX) Soga Yoshinobu (Susono JPX), Hydraulic control system for continuously variable transmission for automotive vehicle.
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van Deursen Petrus H. (Deurne NLX) Ludoph Hemmo H. J. (Heeze NLX), Method and apparatus for controlling an infinitely variable transmission.
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Itoh Hiroshi (Toyota JPX) Hiramatsu Shigeki (Okazaki JPX) Takada Mitsuru (Toyota JPX) Tamura Tadashi (Toyota JPX), Method and apparatus for controlling hydraulically-operated continuously variable transmission of belt-and-pulley type.
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Ito Hiroshi (Toyota JPX) Hiramatsu Shigeki (Okazaki JPX) Takada Mitsuru (Toyota JPX), Method for controlling an engine installed with continuously variable transmission.
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[미국특허] Hydraulic control apparatus for vehicle power transmitting system having continuously variable transmission 원문보기

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[미국특허] Hydraulic control apparatus for vehicle power transmitting system having continuously variable transmission 원문보기

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