IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0920471
(2009-02-24)
|
등록번호 |
US-8443956
(2013-05-21)
|
국제출원번호 |
PCT/US2009/034998
(2009-02-24)
|
§371/§102 date |
20100901
(20100901)
|
국제공개번호 |
WO2009/111220
(2009-09-11)
|
발명자
/ 주소 |
- Bauer, Karl-Heinz
- Xiang, Xiaoning
- Koenig, Melissa
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
7 인용 특허 :
114 |
초록
▼
A dual clutch transmission having a hydraulic circuit for controlling and cooling the clutches of a dual clutch transmission having lube valves in fluid communication with a source of pressurized fluid and wherein the cooling flow is controlled by a solenoid which is adapted to move a valve member t
A dual clutch transmission having a hydraulic circuit for controlling and cooling the clutches of a dual clutch transmission having lube valves in fluid communication with a source of pressurized fluid and wherein the cooling flow is controlled by a solenoid which is adapted to move a valve member to produce a flow area through the valve that is an inverse function of the current delivered to the solenoid and so as to deliver a predetermined control solenoid pressure ultimately to each of the clutches of a dual clutch transmission.
대표청구항
▼
1. A dual clutch transmission (10) having a hydraulic circuit (110) for controlling and cooling the clutches (32, 34) of the dual clutch transmission, said dual clutch transmission (10) comprising: said hydraulic circuit (110) having a source o pressurized cooling fluid (112);first and second lube v
1. A dual clutch transmission (10) having a hydraulic circuit (110) for controlling and cooling the clutches (32, 34) of the dual clutch transmission, said dual clutch transmission (10) comprising: said hydraulic circuit (110) having a source o pressurized cooling fluid (112);first and second lube valves (116, 118) in fluid communication with said source of pressurized fluid (112), each of said first and second lube valves including a lube valve body (218) and a lube valve member (220) movably supported in said lube valve body to selectively and independently provide a flow of cooling fluid to each of the clutches (32, 34) of the dual clutch transmission with each of said lube valves (116, 118) including a biasing member (225) that acts on said lube valve member (220) to bias it to a normally closed position; andfirst and second control actuators (120, 122) at fluid communication with a corresponding one of said first and second lube valves (116, 118) and adapted to selectively control said first and second lube valves, each of said first and second control actuators in fluid communication with said source of pressurized cooling fluid (112) and including an actuator valve body (226), an actuator valve member (228) movably supported by said actuator valve body and a solenoid (230), said solenoid adapted to move said actuator valve member (228) of said control actuator to produce a signal pressure that is an inverse function of the current delivered to said solenoid (230) and to deliver a predetermined control signal pressure to each of said lube valve members (220) of said first and second lube valves (116, 118) to move said lube valve members against the bias of said biasing member (225) to selectively open said first and second lube valves thereby delivering a controlled, predetermined amoral, of cooling fluid to the clutches (32, 34) of the dual clutch transmission (10). 2. The dual clutch transmission (10) as set forth in claim 1 further including first and second clutch actuation valves (124, 126) in fluid communication with said source of pressurized cooling fluid (112) and a corresponding one of the two clutches of the dual clutch transmission, each of said first and second clutch actuation valves (124, 126) adapted to provide pressurized fluid to each of a corresponding one of the clutches of a dual clutch transmission to actuate same. 3. The dual clutch transmission (10) as set forth claim 1 further including a main pressure regulator (114) in fluid communication with said source of pressurized fluid (112) and adapted to provide a predetermined set system pressure for said hydraulic circuit (110). 4. The dual clutch transmission (10) as set forth in claim 3 wherein said main pressure regulator (114) is disposed in fluid communication between said source of pressurized cooling fluid (112) and said first and second lube control valves (116, 118) and said first and second control actuators (120,122). 5. A dual clutch transmission (10) having a hydraulic circuit (310) for controlling and cooling the clutches (32,34) of the dual clutch transmission, said dual clutch transmission (10) comprising: said hydraulic circuit (310) including a source of pressurized cooling fluid (112);first and second lube valves (316, 318) in fluid communication with said source of pressurized fluid (112), each of said first and second lube valves (316, 318) including a lube valve body (418) and a lube valve member (420) movably supported in said lube valve body to selectively and independently provide a flow of cooling fluid to each of the clutches 34, 34) dual clutch transmission with each of said lube valves including a biasing member (425) that acts on said lube valve member (420) to bias it to a normallv closed position and a solenoid (430), said solenoid adapted to move said lube valve, member (420) against the bias of said biasing member to produce a flow area through said lube valve that is an inverse function of the current delivered to said solenoid (430) to selectively open said first and second lube valves (316,318) thereby delivering a controlled, predetermined amount of cooling fluid to the clutches (32, 34) of the dual clutch transmission (10). 6. The dual clutch transmission (10) as set forth in claim 5 further including first and second clutch actuation valves (124, 126) in fluid communication with said source of pressurized cooling fluid (112) and a corresponding one of the two clutches (32, 34) of the dual clutch transmission, each of said first and second clutch actuation valves (124, 126) adapted to provide pressurized fluid to each of a corresponding one of the clutches of a dual clutch transmission to actuate same. 7. The clutch transmission (10) as set forth in claim 5 further including a main pressure regulator (114) in fluid communication with said source of pressurized fluid (112) and adapted to provide a predetermined set system pressure for said hydraulic circuit (310). 8. The dual clutch transmission (10) as set forth in claim 7 wherein said main pressure regulator (114) is disposed in fluid communication between said source of pressurized cooling fluid (112) and said first and second lube valves (316, 318). 9. A dual clutch transmission (10) having a hydraulic circuit (510) for controlling and cooling the clutches (32, 34) of the dual clutch transmission, said dual clutch transmission comprising: said hydraulic circuit (510) having a source of pressurized cooling fluid (112);a lube valve (516) in fluid communication with said source of pressurized fluid (112), said lube valve including a lube valve body (518) and a lube valve member (520) movably supported in said lube valve body (518) to selectively provide a flow of cooling fluid to the clutches (32, 34) of the dual clutch transmission, said lube valve (516) including a biasing member (625) that acts on said lube valve member (620) to bias it to a normally closed position;a control actuator (520) in fluid communication with said with valve (516) and adapted to selectively control said lube valve, said control actuator (520) in fluid communication with said source of pressurized cooling fluid (112) and including all an actuator valve body (626), an actuator valve member (628) movably supported by said actuator valve body (626) and a solenoid (630), said solenoid (630) adapted to move said actuator valve member (628) of said control actuator to produce a control signal pressure from said control actuator that is an inverse function of the current delivered to said solenoid (630) and to deliver a predetermined amount of pressurized fluid to said lube valve member of said tube valve (516) to move said lube valve member (520) against the bias of said biasing, member (625) to thereby deliver a controlled, predetermined amount of cooling fluid through said lube valve (516); anda cooling switch valve (523) in fluid communication with said valve (516), said cooling switch valve adapted to deliver a controlled, predetermined amount of cooling fluid received from said lube valve (516) to alternate ones of the clutches (32, 34) of a dual clutch transmission. 10. The dual clutch transmission (10) as set forth in claim 9 further including first and second clutch actuation (124, 126) in fluid communication with said source of pressurized cooling fluid (112) and a corresponding one of the two clutches (32, 34) of the dual clutch transmission, each of said first and second clutch actuation valves (124, 126) adapted to provide pressurized fluid to each of a corresponding one of the clutches of a dual clutch transmission to actuate same. 11. The dual clutch transmission (10) as set forth in claim 9 wherein said cooling switch valve (523) includes a switch valve body (525) and a switch valve member (527) movably supported in said switch valve body (525), said cooling switch valve (523) being controlled by the actuation of said clutch actuation valves (124, 126). 12. The dual clutch transmission (l0) as set or in claim 11 wherein said cooling switch valve (523) receives, a pressure bias on one side of said switch valve member (527) delivered by said first clutch actuation valve (124) to bias the switch valve member (527) so as to provide direct cooling fluid through said cooling switch valve to one of the clutches of the dual clutch transmission. 13. The dual clutch transmission as set forth in claim 12 wherein said cooling switch valve (523) is adapted to receive a bias on the opposite side of said switch valve member (527) delivered from the second clutch actuation valve (126) to direct cooling fluid through the cooling switch valve (523) to the other clutch of the dual clutch transmission. 14. A dual clutch transmission (10) having a hydraulic circuit (810) for controlling and cooling the clutches (32, 34) of the dual clutch transmission, said dual clutch transmission comprising: said hydraulic circuit (810) including a source of pressurized cooling fluid (112);a lube valve(816) in fluid communication with said source of pressurized fluid (112), said lube valve including a lube vale body 818 and a lube valve member (820) movably supported in said lube valve body to selectively and independently provide a flow of cooling fluid to each of the clutches (32, 34) of the dual clutch transmission, said lube valve (816) further including a biasing member (925) the acts on said lube valve member (820) to bias it to a normally closed position and a solenoid (930), said solenoid adapted to move said lube valve member (820) against the bias of said biasing member (925) to produce a flow area through said lube valve that is an inverse function of the current delivered to said solenoid (930) to selectively open said lube valve (816); anda cooling switch valve (823) in fluid communication with said lube valve (816), said cooling switch valve (823) adapted to deliver a controlled, predetermined amount of cooling fluid received switch valve (823) adapted to deliver a controlled, predetermined amount of cooling fluid received from said lube valve (816) to alternate ones of the clutches (32, 34) of a dual clutch transmission. 15. The dual clutch transmission (10) as set forth in claim 14 further including first and second clutch actuation valves (124, 126) in fluid communication with said source of pressurized cooling fluid (112) and a corresponding one of the two clutches (32, 34) of the dual clutch transmission, each of said first and second clutch actuation valves (124, 126) adapted to provide pressurized fluid to each of a corresponding one of the clutches of a dual clutch transmission to actuate same. 16. The dual clutch transmission (10) as set forth in claim 14 wherein said cooling switch valve (823) includes a switch valve body (825) and a switch valve member (827) movably supported in said valve body (825), said cooling switch valve (823) being controlled by the actuation of said clutch actuation valves (124, 126). 17. The dual clutch transmission (10) as set forth in claim 16 wherein said cooling switch valve (823) receives a pressure bias on one side of said switch valve member (827) delivered by said first clutch actuation valve (124) to bias said switch valve member (827) so as to provide direct cooling fluid through said cooling switch valve (823) to one of the clutches of the dual clutch transmission. 18. The dual clutch transmission (10) as set forth in claim 17 wherein said cooling switch valve (823) is adapted to receive a bias on the opposite side of said switch valve member (827) delivered from the second clutch actuation valve (126) to direct cooling fluid through the cooling switch valve (823) to the other clutch of the dual clutch transmission. 19. The dual clutch transmission (10) as set forth in claim 14 further including a main pressure regulator (114) in fluid communication with said source of pressurized fluid and adapted to provide a predetermined set system pressure for said hydraulic circuit (810). 20. The dual clutch transmission (10) as set forth in claim 19 wherein said main pressure regulator (114) is disposed in fluid communication between said source of pressurized. cooling fluid (112) and said lube control valve (816).
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