[특허]Hydraulic circuit for automatic transmission

[미국특허] Hydraulic circuit for automatic transmission 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F15B-020/00 F15B-013/044 F16D-048/02
출원번호	US-0099709 (2013-12-06)
등록번호	US-9488197 (2016-11-08)
우선권정보	KR-10-2013-0081047 (2013-07-10)
발명자 / 주소	Wi, Taehwan
출원인 / 주소	Hyundai Motor Company
대리인 / 주소	Morgan, Lewis & Bockius LLP
인용정보	피인용 횟수 : 27 인용 특허 : 10

초록 ▼

A hydraulic circuit may include a proportional control solenoid valve controlling hydraulic pressure such that an operating hydraulic pressure required by the friction member is supplied to the friction member; a supply hydraulic path connecting the proportional control solenoid valve with the friction member, and adapted to supply hydraulic pressure controlled by the proportional control solenoid valve to the friction member; and a switch valve disposed in the supply hydraulic path so as to selectively open/close the supply hydraulic path.

대표청구항 ▼

1. A hydraulic circuit for an automatic transmission that is adapted to supply hydraulic pressure to a plurality of friction members provided in the automatic transmission so as to realize a plurality of shift speeds, the hydraulic circuit comprising: a plurality of proportional control solenoid valves controlling the hydraulic pressure such that an operating hydraulic pressure required by the friction members is supplied to the friction members;a plurality of supply hydraulic paths each connecting a corresponding one of the proportional control solenoid valves with a corresponding one of the friction members, and adapted to supply the operating hydraulic pressure controlled by the corresponding proportional control solenoid valve to the corresponding friction member;a plurality of switch valves each disposed in a corresponding one of the supply hydraulic paths so as to selectively open or close the corresponding supply hydraulic path;an on/off solenoid valve operating at least two of the switch valves; andan elastic member provided to each of the at least two switch valves for returning the switch valves to an original position,wherein foreign materials having flowed into the proportional control solenoid valves which are connected with the friction members are simultaneously removed in a case in which the plurality of switch valves are connected with the one on/off solenoid valve by stopping the switch valves and operating the one on/off solenoid valve in a full stroke. 2. The hydraulic circuit of claim 1, further comprising: an inflow hydraulic path connected to the proportional control solenoid valves and provided for supplying oil to the proportional control solenoid valves; andan outflow hydraulic path connected to the proportional control solenoid valves and provided for exhausting oil from the proportional control solenoid valves. 3. The hydraulic circuit of claim 2, wherein the operating hydraulic pressure supplied to the friction members is controlled according to the oil flowing into the proportional control solenoid valves through the inflow hydraulic path and the oil exhausted from the proportional control solenoid valves through the outflow hydraulic path. 4. The hydraulic circuit of claim 1, each of the at least two switch valves comprising: an opening unit formed to open the supply hydraulic path when the opening unit is engaged in the supply hydraulic path; anda closing unit formed to close the supply hydraulic path when the closing unit is engaged in the supply hydraulic path,wherein the closing unit is engaged in the supply hydraulic path when the switch valve is operated, andthe opening unit is engaged in the supply hydraulic path when the switch valve returns to the original position. 5. The hydraulic circuit of claim 1, wherein an operation to remove the foreign materials having flowed into the proportional control solenoid valves is performed in a state of closing the supply hydraulic path. 6. The hydraulic circuit of claim 5, wherein each proportional control solenoid valve includes a spool which reciprocates in the proportional control solenoid valve such that the operating hydraulic pressure generated from the proportional control solenoid valves is controlled, and the foreign materials having flowed into the proportional control solenoid valves are removed by a reciprocal motion of the spools in the state of closing the supply hydraulic path.

이 특허에 인용된 특허 (10) 인용/피인용 타임라인 분석

Moorman, Steven P.; Weingartz, Christopher Jay, Apparatus for and method of controlling a dual clutch transmission.
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Ames, David C.; Long, Charles F., Dual clutch torque converter control system.
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Seid, David L.; Najmolhoda, Hamid, Dynamic pressure control system with solenoid valve command current trimming.
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Takagi Kiyoharu,JPX, Hydraulic control apparatus for lock-up clutch assembled within torque converter.
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Shimizu,Tetsuya; Tsuchida,Kenichi; Suzuki,Akitomo; Ishikawa,Kazunori; Shibayama,Yoshinori, Hydraulic control apparatus of automatic transmission.
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Niiyama Tsunefumi (Kamifukuoka JPX), Hydraulic pressure control for automatic transmission.
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Yoshiaki Hori JP; Takashi Shichinohe JP; Tohru Nishi JP; Noriaki Takano JP, Power transmission apparatus for a vehicle.
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Yoshimura Hiroshi (Hiroshima JPX) Okamoto Kenji (Hiroshima JPX), Slip control device of a fluid coupling.
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Shimizu, Tetsuya; Kato, Kazuhiko; Fujii, Noriomi; Ishikawa, Kazunori, Solenoid valve apparatus.
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Oehme Clifford H., Transmission shift valves with latching control.
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이 특허를 인용한 특허 (27) 인용/피인용 타임라인 분석

Jaworek, Gary S.; Koch, Jr., Robert L.; Auld, Michael D.; Kimsey, John S.; Baber, Daniel L.; Leimbach, Richard L.; Ulrich, Daniel J., Articulatable surgical instruments with conductive pathways for signal communication.
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Shelton, IV, Frederick E.; Morgan, Jerome R.; Yates, David C.; Baxter, III, Chester O.; Beckman, Andrew T., Charging system that enables emergency resolutions for charging a battery.
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Harris, Jason L.; Shelton, IV, Frederick E.; Vendely, Michael J., Compressible adjuncts with bonding nodes.
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Leimbach, Richard L.; Lytle, IV, Thomas W.; Sackett, Kevin D.; Overmyer, Mark D., Drive train control arrangements for modular surgical instruments.
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Leimbach, Richard L.; Shelton, IV, Frederick E.; Morgan, Jerome R.; Schellin, Emily A., End effector detection and firing rate modulation systems for surgical instruments.
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Shelton, IV, Frederick E.; Morgan, Jerome R., Manipulatable surgical systems with selectively articulatable fastening device.
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Shelton, IV, Frederick E.; Overmyer, Mark D.; Yates, David C.; Harris, Jason L., Mechanisms for compensating for drivetrain failure in powered surgical instruments.
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Shelton, IV, Frederick E.; Morgan, Jerome R.; Harris, Jason L.; Beckman, Andrew T.; Baxter, III, Chester O., Power adapter for a surgical instrument.
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Shelton, IV, Frederick E., Staple cartridges for forming staples having differing formed staple heights.
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Swayze, Jeffrey S.; Hueil, Joseph C.; Morgan, Jerome R.; Shelton, IV, Frederick E., Stapling assembly configured to produce different formed staple heights.
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Shelton, IV, Frederick E.; Harris, Jason L., Stapling end effector configured to compensate for an uneven gap between a first jaw and a second jaw.
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Schmid, Katherine J.; Morgan, Jerome R.; Korvick, Donna L.; Shelton, IV, Frederick E., Stapling system comprising an adjunct and a flowable adhesive.
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Shelton, IV, Frederick E., Surgical cutting and fastening instrument.
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Shelton, IV, Frederick E.; Swayze, Jeffrey S.; Baxter, III, Chester O., Surgical fastening apparatus with a rotary end effector drive shaft for selective engagement with a motorized drive system.
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Yates, David C.; Huitema, Thomas W.; Shelton, IV, Frederick E., Surgical instrument comprising a control system.
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Overmyer, Mark D.; Auld, Michael D.; Adams, Shane R.; Shelton, IV, Frederick E.; Harris, Jason L., Surgical instrument comprising a lockable battery housing.
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Yates, David C.; Shelton, IV, Frederick E.; Giordano, James R., Surgical instrument system for evaluating tissue impedance.
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Shelton, IV, Frederick E.; Baxter, III, Chester O., Surgical instrument with an anvil that is selectively movable about a discrete non-movable axis relative to a staple cartridge.
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Hunter, Morgan R.; Schultz, Darwin L.; Worthington, Sarah A.; Shelton, IV, Frederick E.; Weaner, Lauren S.; Vendely, Michael J., Surgical instrument with articulating and axially translatable end effector.
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Hunter, Morgan R.; Schultz, Darwin L.; Dunki-Jacobs, Adam R.; Baxter, III, Chester O.; Swayze, Jeffrey S., Surgical instruments with tensioning arrangements for cable driven articulation systems.
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Harris, Jason L.; Morgan, Jerome R.; Zeiner, Mark S.; Shelton, IV, Frederick E., Surgical staple and driver arrangements for staple cartridges.
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Murray, Michael A.; Morgan, Jerome R.; Hess, Christopher J.; Weisenburgh, II, William B.; Zwolinski, Andrew M., Surgical staple cartridge.
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Overmyer, Mark D.; Yates, David C.; Shelton, IV, Frederick E.; Adams, Shane R.; Leimbach, Richard L., Surgical stapler having motor control based on an electrical parameter related to a motor current.
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Shelton, IV, Frederick E.; Setser, Michael E.; Weisenburgh, II, William B., Surgical stapling instrument with lockout features to prevent advancement of a firing assembly unless an unfired surgical staple cartridge is operably mounted in an end effector portion of the instrument.
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Shelton, IV, Frederick E.; Morgan, Jerome R., Surgical stapling instruments with rotatable staple deployment arrangements.
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Shelton, IV, Frederick E.; Harris, Jason L.; Yates, David C., System for controlling articulation forces.
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Shelton, IV, Frederick E.; Harris, Jason L.; Swensgard, Brett E.; Leimbach, Richard L.; Adams, Shane R.; Overmyer, Mark D., Time dependent evaluation of sensor data to determine stability, creep, and viscoelastic elements of measures.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Hydraulic circuit for automatic transmission 원문보기

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이 특허에 인용된 특허 (10) 인용/피인용 타임라인 분석

이 특허를 인용한 특허 (27) 인용/피인용 타임라인 분석

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[미국특허] Hydraulic circuit for automatic transmission 원문보기

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이 특허에 인용된 특허 (10) 인용/피인용 타임라인 분석

이 특허를 인용한 특허 (27) 인용/피인용 타임라인 분석

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