Hydraulic control systems for dual clutch transmissions
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F16H-031/00
F16H-003/38
출원번호
US-0603329
(2009-10-21)
등록번호
US-8403792
(2013-03-26)
발명자
/ 주소
Lundberg, Philip C.
Olson, Bret M.
출원인 / 주소
GM Global Technology Operations LLC
인용정보
피인용 횟수 :
5인용 특허 :
19
초록▼
The present invention comprehends a plurality of embodiments of a hydraulic control system for various configurations of dual clutch transmissions. The hydraulic control systems all include a regulated source of pressurized hydraulic fluid including an electric pump, a filter and an accumulator, a p
The present invention comprehends a plurality of embodiments of a hydraulic control system for various configurations of dual clutch transmissions. The hydraulic control systems all include a regulated source of pressurized hydraulic fluid including an electric pump, a filter and an accumulator, a pair of pressure control valves and a branching hydraulic circuit including pressure or flow control valves, spool or logic valves and two position valves which collectively supply and exhaust hydraulic fluid from a plurality of shift actuators. The actuators are connected to shift rails which include shift forks and are slidable to engage synchronizers and positive clutches associated with the various gear ratios.
대표청구항▼
1. A hydraulic control system for a dual clutch transmission comprising, in combination, a source of pressurized hydraulic fluid including a pump,a pair of pressure control solenoid valves having inputs communicating with said source of hydraulic fluid and a first output and second output independen
1. A hydraulic control system for a dual clutch transmission comprising, in combination, a source of pressurized hydraulic fluid including a pump,a pair of pressure control solenoid valves having inputs communicating with said source of hydraulic fluid and a first output and second output independent of said first output,a pair of clutch actuator assemblies each in fluid communication with one of said outputs and including a piston and cylinder assembly and a solenoid valve for selectively supplying hydraulic fluid to said piston and cylinder assembly,first and second pressure or flow control solenoid valves each having inlets connected to said source of hydraulic fluid and respective first and second outlets,a first logic valve having a first inlet connected to said first output and a second inlet connected to said second output, a plurality of exhaust ports, a control port, a first outlet, a second outlet, a third outlet and a fourth outlet,a second logic valve having a first inlet connected to said first outlet of said first logic valve, a second inlet connected to said third outlet, a plurality of exhaust ports, a control port, a first outlet, a second outlet, a third outlet and a fourth outlet,a first gear selection piston and cylinder assembly having a first port connected to said first outlet of said second logic valve and a second port connected to said third outlet of said second logic valve,a second gear selection piston and cylinder assembly having a first port connected to said second outlet of said second logic valve and a second port connected to said fourth port of said second logic valve,a third logic valve having a first inlet connected to said second outlet of said first logic valve, a second inlet connected to said fourth outlet of said first logic valve, a plurality of exhaust ports, a control port, a first outlet, a second outlet, a third outlet and a fourth outlet,a third gear selection piston and cylinder assembly having a first port connected to said first outlet of said third logic valve and a second port connected to said third port of said second logic valve, anda fourth gear selection piston and cylinder assembly having a first port connected to said second outlet of said third logic valve and a second port connected to said fourth port of said third logic valve. 2. The hydraulic control system of claim 1 further including a two position solenoid valve operably disposed between said source of hydraulic fluid and each of said control ports of said logic valves. 3. The hydraulic control system of claim 1 further including a fourth logic valve and a fifth gear selection piston and cylinder assembly. 4. The hydraulic control system of claim 1 further including a position sensor operably associated with each of said gear selection piston and cylinder assemblies. 5. The hydraulic control system of claim 1 further including a transmission control module having a plurality of inputs and outputs, said outputs operably coupled to said valves and a position sensor for sensing the position of each of said pistons of said gear selection piston and cylinder assemblies and having an output coupled to one of said control module inputs. 6. The hydraulic control system of claim 1 wherein said logic valves each include a valve spool having a plurality of lands. 7. The hydraulic control system of claim 1 further including a check valve assembly having a first inlet communicating with said first output, a second inlet communicating with said second output and an outlet communicating with said first and second inlets of said pressure or flow control solenoid valves. 8. A hydraulic control system for a dual clutch transmission comprising, in combination, a source of pressurized hydraulic fluid having a pump,a first pressure control solenoid valve having an inlet communicating with said source of hydraulic fluid and a first outlet,a second pressure control solenoid valve having an inlet communicating with said source of hydraulic fluid and a second outlet,a first clutch actuator assembly in fluid communication with said first outlet and including a first piston and cylinder assembly and a first solenoid valve for selectively supplying hydraulic fluid to said first piston and cylinder assembly,a second clutch actuator assembly in fluid communication with said second outlet and including a second piston and cylinder assembly and a second solenoid valve for selectively supplying hydraulic fluid to said second piston and cylinder assembly,a check valve having a first inlet communicating with said first outlet, a second inlet communicating with said second outlet and a check valve outlet,a first pressure or flow control solenoid valve having an inlet connected to said check valve outlet and having an outlet,a second pressure or flow control solenoid valve having an inlet connected to said check valve outlet and having an outlet,a first logic valve having a first inlet connected to said outlet of said first pressure or flow control solenoid and a second inlet connected to said outlet of said second pressure or flow control solenoid valve, a plurality of exhaust ports, a control port, a first outlet, a second outlet, a third outlet and a fourth outlet,a second logic valve having a first inlet connected to said first outlet of said first logic valve, a second inlet connected to said third outlet of said first logic valve, a plurality of exhaust ports, a control port, a first outlet, a second outlet, a third outlet and a fourth outlet,a first gear selection piston and cylinder assembly having a first port connected to said first outlet of said second logic valve and a second port connected to said third outlet of said second logic valve,a second gear selection piston and cylinder assembly having a first port connected to said second outlet of said second logic valve and a second port connected to said fourth outlet of said second logic valve,a third logic valve having a first inlet connected to said fourth outlet of said first logic valve and a second inlet connected to said second outlet of said first logic valve, a plurality of exhaust ports, a control port, a first outlet, a second outlet, a third outlet and a fourth outlet,a third gear selection piston and cylinder assembly having a first port connected to said first outlet of said third logic valve and a second port connected to said third outlet of said third logic valve,a fourth logic valve having a first inlet connected to said second outlet of said third logic valve and a second inlet connected to said fourth outlet of said third logic valve, a plurality of exhaust ports, a control port, a first outlet, a second outlet, a third outlet and a fourth outlet,a fourth gear selection piston and cylinder assembly having a first port connected to said first outlet of said fourth logic valve and a second port connected to said third outlet of said fourth logic valve, anda fifth gear selection piston and cylinder assembly having a first port connected to said second outlet of said fourth logic valve and a second port connected to said fourth outlet of said fourth logic valve. 9. The hydraulic control system of claim 8 wherein said inlets of said first and said second pressure or flow control solenoid valves are connected directly to said source of hydraulic fluid. 10. The hydraulic control system of claim 8 further including a position sensor operably associated with each of said gear selection piston and cylinder assemblies. 11. The hydraulic control system of claim 8 further including a transmission control module having a plurality of inputs and outputs, said outputs operably coupled to at least said first and said second pressure or flow control valves and a plurality of linear position sensors for sensing the output of each of said gear selection piston and cylinder assemblies, each of said plurality of linear position sensors having an output coupled to one of said control module inputs. 12. The hydraulic control system of claim 8 further including a first two position solenoid valve having an input communicating with said first outlet of said check valve and an outlet communicating with said control port of said first logic valve, a second two position solenoid valve having an input communicating with said second outlet of said check valve and an outlet communicating with said control ports of said second logic valve and said fourth logic valve, and a third two position solenoid valve having an input communicating with said outlet of said check valve and an outlet communicating with said control port of said third logic valve. 13. The hydraulic control system of claim 8 further including a fourth two position solenoid valve having an input communicating with said outlet of said check valve and an outlet communicating with said control port of said fourth logic valve. 14. The hydraulic control system of claim 8 wherein said source of pressurized hydraulic fluid includes a pump, an accumulator, a filter and a check valve. 15. A hydraulic control system for a dual clutch transmission comprising, in combination, a source of pressurized hydraulic fluid including a pump and an accumulator,a first pair of pressure control solenoid valves having inlets communicating with said source of hydraulic fluid and a first pair of outputs,a pair of clutch actuator assemblies each in fluid communication with a respective one of said first pair of outputs and including a piston and cylinder assembly, a solenoid valve for selectively supplying hydraulic fluid to said piston and cylinder assembly and a check valve disposed between said one of said outputs and said piston and cylinder assembly,a second pair of pressure or flow control solenoid valves having inlets communicating with said source of hydraulic fluid and a second pair of outputs,a first logic valve having a first inlet port connected to one of said second pair of outputs and a second inlet port connected to another of said second pair of outputs, a plurality of exhaust ports, a control port, and four outlet ports,a second logic valve having two inlet ports connected to a first two of said outlet ports of said first logic valve inlet, a plurality of exhaust ports, a control port, and four outlet ports,a first gear selection piston and cylinder assembly having a pair of ports connected to a first two of said outlet ports of said second logic valve,a second gear selection piston and cylinder assembly having a pair of ports connected to a second two of said outlet ports of said second logic valve,a third logic valve having two inlet ports connected to a second two of said outlet ports of said first logic valve inlet, a plurality of exhaust ports, a control port, and four outlet portsa third gear selection piston and cylinder assembly having a pair of ports connected to a first two of said outlet ports of said third logic valve,a fourth logic valve having two inlets connected to a second two of said outlet ports of said third logic valve, a plurality of exhaust ports, a control port and four outlet ports,a fourth gear selection piston and cylinder assembly having a pair of ports connected to a first two of said outlet ports of said fourth logic valve, anda fifth gear selection piston and cylinder assembly having a pair of ports connected to a second two of said outlet ports of said fourth logic valve. 16. The hydraulic control system of claim 15 further including a position sensor operably associated with each of said gear selection piston and cylinder assemblies. 17. The hydraulic control system of claim 15 further including a transmission control module having a plurality of inputs and outputs, said outputs operably coupled to said valves and a linear position sensor for sensing the output of each of said gear selection piston and cylinder assemblies having an output coupled to one of said control module inputs. 18. The hydraulic control system of claim 15 further including a passive fluid pressure regulator disposed between said source of pressurized hydraulic fluid and a manifold having a pair of check valves. 19. The hydraulic control system of claim 15 further including a pair of pressure control solenoid valves having inputs communicating with said accumulator and a first output and a second output independent of said first output. 20. The hydraulic control system of claim 15 further including a plurality of solenoid valves each having an inlet port and an outlet port communicating with said control ports. 21. The hydraulic control system of claim 15 wherein said logic valves each include a spool and a solenoid having a plunger connected to and translating said spool.
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이 특허에 인용된 특허 (19)
Nakao Toshiyuki (Chiryu JPX) Furukawa Tamotsu (Yokohama JPX) Mori Masanori (Chiryu JPX), Automatic transmission system for automobiles having hydraulic and electronic control systems.
Hegerath,Andreas; Leibbrandt,Martin; Moehlmann,Reinhard; Eggert,Ulrich, Hydraulic system providing pressure and volume flows in a double-clutch transmission.
Baldascini,Filippo; Caenazzo,Dario; Mesiti,Domenico; Pregnolato,Gianluigi, Servo-assisted control system for the gears of a double clutch gearbox of a motor vehicle.
Moorman, Steven P.; Lundberg, Philip C.; Czoykowski, John R.; Olson, Bret M.; Ghike, Chinar S.; Hendrickson, James D.; Weingartz, Christopher Jay, Method of controlling a dual clutch transmission.
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