IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0707470
(2010-02-17)
|
등록번호 |
US-8234946
(2012-08-07)
|
발명자
/ 주소 |
- Momal, Pascal
- Olson, Bret M.
- Lundberg, Philip C.
|
출원인 / 주소 |
- GM Global Technology Operations LLC
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
17 |
초록
▼
A hydraulic control system for a dual clutch transmission includes a plurality of solenoids and valves in fluid communication with a plurality of clutch actuators and with a plurality of synchronizer actuators. The clutch actuators are operable to actuate a plurality of torque transmitting devices a
A hydraulic control system for a dual clutch transmission includes a plurality of solenoids and valves in fluid communication with a plurality of clutch actuators and with a plurality of synchronizer actuators. The clutch actuators are operable to actuate a plurality of torque transmitting devices and the synchronizer actuators are operable to actuate a plurality of synchronizer assemblies. Selective activation of combinations of the solenoids allows for a pressurized fluid to flow through the valves to activate at least one of the clutch actuators and synchronizer actuators in order to shift the transmission into a desired gear ratio. A range selection valve is operable to place the transmission in Park and out-of-Park modes of operation.
대표청구항
▼
1. A hydraulic control system for controlling a dual clutch and a plurality of synchronizers in a transmission, the hydraulic control system comprising: a source of pressurized hydraulic fluid;a first pressure control solenoid having an input and an output, wherein the input is in fluid communicatio
1. A hydraulic control system for controlling a dual clutch and a plurality of synchronizers in a transmission, the hydraulic control system comprising: a source of pressurized hydraulic fluid;a first pressure control solenoid having an input and an output, wherein the input is in fluid communication with the source of pressurized hydraulic fluid;a second pressure control solenoid having an input and an output, wherein the input is in fluid communication with the source of pressurized hydraulic fluid;a first clutch solenoid having an input and an output, wherein the input is in fluid communication with the output of the first pressure control solenoid;a second clutch solenoid having an input and an output, wherein the input is in fluid communication with the output of the second pressure control solenoid;a first clutch actuator in fluid communication with the first clutch solenoid for selectively actuating the dual clutch;a second clutch actuator in fluid communication with the second clutch solenoid for selectively actuating the dual clutch;a check valve assembly having a first input in fluid communication with the output of the first pressure control solenoid, a second input in fluid communication with the output of the second pressure control solenoid, and an output;a first synchronizer solenoid having an input and an output, wherein the input is in fluid communication with the output of the check valve assembly;a second synchronizer solenoid having an input and an output, wherein the input is in fluid communication with the output of the check valve assembly;a range selection valve having an input and an output, wherein the input is in fluid communication with the output of the check valve assembly;a park servo mechanism in communication with the output of the range selection valve, the park servo mechanism operable to place the transmission in a Park mode of operation and an out-of-Park mode of operation; anda plurality of logic valves for selectively communicating pressurized hydraulic fluid from the first and second synchronizer solenoids to a plurality of synchronizer actuators in order to actuate the plurality of synchronizers. 2. The hydraulic control system of claim 1 further comprising: a first logic valve having a first input in fluid communication with the output of the first synchronizer solenoid, a second input in fluid communication with the output of the second synchronizer solenoid, a first output, a second output, a third output, and a fourth output;a second logic valve having a first input in fluid communication with the first output of the first logic valve, a second input in fluid communication with the third output of the first logic valve, a first output, a second output, a third output, and a fourth output;a third logic valve having a first input in fluid communication with the fourth output of the first logic valve, a second input in fluid communication with the second output of the first logic valve, a first output, a second output, a third output, and a fourth output;a fourth logic valve having a first input in fluid communication with the first output of the third logic valve, a second input in fluid communication with the third output of the third logic valve, a first output, a second output, a third output, and a fourth output;a first synchronizer actuator having a first port in fluid communication with the second output of the second logic valve and a second port in fluid communication with the fourth output of the second logic valve;a second synchronizer actuator having a first port in fluid communication with the first output of the second logic valve and a second port in fluid communication with the third output of the second logic valve;a third synchronizer actuator having a first port in fluid communication with the second output of the third logic valve and a second port in fluid communication with the fourth output of the third logic valve;a fourth synchronizer actuator having a first port in fluid communication with the third output of the fourth logic valve and a second port in fluid communication with the first output of the fourth logic valve; anda fifth synchronizer actuator having a first port in fluid communication with the second output of the fourth logic valve and a second port in fluid communication with the fourth output of the fourth logic valve. 3. The hydraulic control system of claim 2 wherein the first inputs of the first, second, third, and fourth logic valves are in selective communication with the first and second outputs of the first, second, third, and fourth logic valves, and wherein the second inputs of the first, second, third, and fourth logic valves are in selective communication with the third and fourth outputs of the first, second, third, and fourth logic valves. 4. The hydraulic control system of claim 2 further comprising a feed limit valve disposed between the output of the check valve assembly and the range selection valve, the feed limit valve having an input in communication with the output of the check valve assembly and an output in communication with the input of the range selection valve, the feed limit valve operable to regulate the pressure of hydraulic fluid communicated through the feed limit valve. 5. The hydraulic control system of claim 4 further comprising a out-of-Park (OOP) solenoid and a return-to-Park (RTP) solenoid, wherein the OOP solenoid includes an input in fluid communication with the output of the feed limit valve and an output in fluid communication with a first end of the range selection valve, and wherein the RTP solenoid includes an input in fluid communication with the output of the feed limit valve and an output in fluid communication with a second end of the range selection valve disposed opposite the first end. 6. The hydraulic control system of claim 4 further comprising first, second, third, and fourth solenoids, wherein each of the first, second, third, and fourth solenoids include an input in fluid communication with the output of the feed limit valve, and wherein the first solenoid includes an output in fluid communication with an end of the first logic valve, the second solenoid includes an output in fluid communication with an end of the second logic valve, the third solenoid includes an output in fluid communication with an end of the third logic valve, and the fourth solenoid includes an output in fluid communication with an end of the fourth logic valve. 7. The hydraulic control system of claim 6 wherein the first, second, third, and fourth solenoids are on/off solenoids. 8. The hydraulic control system of claim 1 further comprising a blow off valve in fluid communication with the output of the check valve assembly, the blow off valve operable to open if the pressure of the hydraulic fluid communicated from the output of the check valve exceeds a predetermined threshold. 9. The hydraulic control system of claim 1 wherein the source of pressurized hydraulic fluid includes a pump and an accumulator. 10. The hydraulic control system of claim 1 wherein the first and second clutch control solenoids are variable flow solenoids. 11. A hydraulic control system for controlling a dual clutch and a plurality of synchronizers in a transmission, the hydraulic control system comprising: a source of pressurized hydraulic fluid;a first pressure control solenoid having an input and an output, wherein the input is in fluid communication with the source of pressurized hydraulic fluid;a second pressure control solenoid having an input and an output, wherein the input is in fluid communication with the source of pressurized hydraulic fluid;a first clutch solenoid having an input and an output, wherein the input is in fluid communication with the output of the first pressure control solenoid;a second clutch solenoid having an input and an output, wherein the input is in fluid communication with the output of the second pressure control solenoid;a first clutch actuator in fluid communication with the first clutch solenoid for selectively actuating the dual clutch;a second clutch actuator in fluid communication with the second clutch solenoid for selectively actuating the dual clutch;a check valve assembly having a first input in fluid communication with the output of the first pressure control solenoid, a second input in fluid communication with the output of the second pressure control solenoid, and an output;a first synchronizer solenoid having an input and an output, wherein the input is in fluid communication with the output of the check valve assembly;a second synchronizer solenoid having an input and an output, wherein the input is in fluid communication with the output of the check valve assembly;a first logic valve having a first input in fluid communication with the output of the first synchronizer solenoid, a second input in fluid communication with the output of the second synchronizer solenoid, a first output, a second output, a third output, and a fourth output;a second logic valve having a first input in fluid communication with the first output of the first logic valve, a second input in fluid communication with the third output of the first logic valve, a first output, a second output, a third output, and a fourth output;a third logic valve having a first input in fluid communication with the fourth output of the first logic valve, a second input in fluid communication with the second output of the first logic valve, a first output, a second output, a third output, and a fourth output;a fourth logic valve having a first input in fluid communication with the first output of the third logic valve, a second input in fluid communication with the third output of the third logic valve, a first output, a second output, a third output, and a fourth output;a first synchronizer actuator having a first port in fluid communication with the second output of the second logic valve and a second port in fluid communication with the fourth output of the second logic valve;a second synchronizer actuator having a first port in fluid communication with the first output of the second logic valve and a second port in fluid communication with the third output of the second logic valve;a third synchronizer actuator having a first port in fluid communication with the second output of the third logic valve and a second port in fluid communication with the fourth output of the third logic valve;a fourth synchronizer actuator having a first port in fluid communication with the third output of the fourth logic valve and a second port in fluid communication with the first output of the fourth logic valve; anda fifth synchronizer actuator having a first port in fluid communication with the second output of the fourth logic valve and a second port in fluid communication with the fourth output of the fourth logic valve. 12. The hydraulic control system of claim 11 wherein the first inputs of the first, second, third, and fourth logic valves are in selective communication with the first and second outputs of the first, second, third, and fourth logic valves, and wherein the second inputs of the first, second, third, and fourth logic valves are in selective communication with the third and fourth outputs of the first, second, third, and fourth logic valves. 13. The hydraulic control system of claim 11 further comprising: a range selection valve having an input and an output, wherein the input is in fluid communication with the output of the check valve assembly; anda park servo mechanism in communication with the output of the range selection valve, the park servo mechanism operable to place the transmission in a Park mode of operation and an out-of-Park mode of operation. 14. The hydraulic control system of claim 13 further comprising a feed limit valve disposed between the output of the check valve assembly and the range selection valve, the feed limit valve having an input in communication with the output of the check valve assembly and an output in communication with the input of the range selection valve, the feed limit valve operable to regulate the pressure of hydraulic fluid communicated through the feed limit valve. 15. The hydraulic control system of claim 14 further comprising an out-of-Park (OOP) solenoid and a return-to-Park (RTP) solenoid, wherein the OOP solenoid includes an input in fluid communication with the output of the feed limit valve and an output in fluid communication with a first end of the range selection valve, and wherein the RTP solenoid includes an input in fluid communication with the output of the feed limit valve and an output in fluid communication with a second end of the range selection valve disposed opposite the first end. 16. The hydraulic control system of claim 14 further comprising first, second, third, and fourth solenoids, wherein each of the first, second, third, and fourth solenoids include an input in fluid communication with the output of the feed limit valve, and wherein the first solenoid includes an output in fluid communication with an end of the first logic valve, the second solenoid includes an output in fluid communication with an end of the second logic valve, the third solenoid includes an output in fluid communication with an end of the third logic valve, and the fourth solenoid includes an output in fluid communication with an end of the fourth logic valve. 17. The hydraulic control system of claim 16 wherein the first, second, third, and fourth solenoids are on/off solenoids. 18. The hydraulic control system of claim 11 further comprising a blow off valve in fluid communication with the output of the check valve assembly, the blow off valve operable to open if the pressure of the hydraulic fluid communicated from the output of the check valve exceeds a predetermined threshold. 19. The hydraulic control system of claim 11 wherein the source of pressurized hydraulic fluid includes a pump and an accumulator. 20. The hydraulic control system of claim 11 wherein the first and second clutch control solenoids are variable flow solenoids.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.