Fluid cooler bypass system for an agricultural work vehicle
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F28F-027/02
F28F-027/00
F15B-021/042
F16H-061/12
F16H-061/4165
출원번호
US-0106383
(2013-12-13)
등록번호
US-10260824
(2019-04-16)
발명자
/ 주소
Brinkley, Jerry Lee
Stoever, Guy Thomas
Restaino, III, Gerard
출원인 / 주소
CNH Industrial America LLC
대리인 / 주소
DeMille, Rickard K.
인용정보
피인용 횟수 :
0인용 특허 :
13
초록▼
A cooler bypass valve assembly for an agricultural implement includes a cooler bypass valve configured to receive hydraulic fluid from a hydraulic supply. The cooler bypass valve position is adjustable between a first position that facilitates flow of the hydraulic fluid to a cooler bypass and restr
A cooler bypass valve assembly for an agricultural implement includes a cooler bypass valve configured to receive hydraulic fluid from a hydraulic supply. The cooler bypass valve position is adjustable between a first position that facilitates flow of the hydraulic fluid to a cooler bypass and restricts flow of the hydraulic fluid to a hydraulic fluid cooler, and a second position that blocks flow of the hydraulic fluid to the cooler bypass and facilitates flow of the hydraulic fluid to the hydraulic fluid cooler. The hydraulic fluid cooler is capable of reducing a temperature of the hydraulic fluid, and the cooler bypass directs the hydraulic fluid around the hydraulic fluid cooler. Additionally, the cooler bypass valve assembly includes a control assembly that controls the cooler bypass valve position based on the temperature of the hydraulic fluid.
대표청구항▼
1. A cooler bypass valve assembly for an agricultural implement, comprising: a cooler bypass valve configured to receive hydraulic fluid from a hydraulic supply, wherein a cooler bypass valve position is adjustable between a first cooler bypass position configured to facilitate flow of the hydraulic
1. A cooler bypass valve assembly for an agricultural implement, comprising: a cooler bypass valve configured to receive hydraulic fluid from a hydraulic supply, wherein a cooler bypass valve position is adjustable between a first cooler bypass position configured to facilitate flow of the hydraulic fluid through the cooler bypass valve to a cooler bypass and to facilitate a restricted flow of the hydraulic fluid through the cooler bypass valve to a hydraulic fluid cooler, and a second cooler bypass position configured to block flow of the hydraulic fluid to the cooler bypass and to facilitate flow of the hydraulic fluid through the cooler bypass valve to the hydraulic fluid cooler, and wherein the hydraulic fluid cooler is configured to reduce a temperature of the hydraulic fluid and to direct the hydraulic fluid to a hydraulic system, and the cooler bypass is configured to direct the hydraulic fluid around the hydraulic fluid cooler to the hydraulic system; anda controller configured to control the cooler bypass valve position based on the temperature of the hydraulic fluid. 2. The cooler bypass valve assembly of claim 1, comprising: a flow control valve configured to selectively facilitate flow of the hydraulic fluid from one side of the cooler bypass valve to control the cooler bypass valve position, wherein a flow control valve position is adjustable between a first position configured to adjust the cooler bypass valve to the first cooler bypass position and a second position configured to adjust the cooler bypass valve to the second cooler bypass position; anda temperature sensor communicatively coupled to the controller and configured to output a signal indicative of the temperature of the hydraulic fluid;wherein the controller is communicatively coupled to the flow control valve and configured to control the flow control valve position based on the signal output from the temperature sensor indicative of the temperature of the hydraulic fluid. 3. The cooler bypass valve assembly of claim 2, wherein the temperature sensor is configured to measure the temperature of the hydraulic fluid in a low pressure line upstream from a hydraulic pump. 4. The cooler bypass valve assembly of claim 2, wherein the controller is configured to instruct the flow control valve to transition to the first position while the temperature of the hydraulic fluid is below a first threshold value, and to instruct the flow control valve to transition to the second position while the temperature of the hydraulic fluid is above a second threshold value. 5. The cooler bypass valve assembly of claim 4, comprising a user interface configured to output a second signal to the controller indicative of the first threshold value, the second threshold value, or a combination of the threshold values. 6. The cooler bypass valve assembly of claim 2, wherein a first side of the cooler bypass valve is in fluid communication with a hydraulic supply line from the hydraulic supply and with the flow control valve, and a second side of the cooler bypass valve is in fluid communication with a hydraulic fluid cooler supply line to the hydraulic fluid cooler; wherein the cooler bypass valve is configured to transition to the first cooler bypass position while a first pressure of the hydraulic fluid in the hydraulic fluid cooler supply line exceeds a second pressure of the hydraulic fluid in the hydraulic supply line by a threshold value, and to otherwise transition to the second cooler bypass position. 7. The cooler bypass valve assembly of claim 2, wherein the cooler bypass valve is a two-position, three-way valve, and the flow control valve is a two-position, two-way valve. 8. The cooler bypass valve assembly of claim 2, comprising a spring configured to bias the cooler bypass valve toward the second cooler bypass position. 9. The cooler bypass valve assembly of claim 8, wherein a first side of the cooler bypass valve is in fluid communication with a hydraulic supply line from the hydraulic supply and with the flow control valve, and a second side of the cooler bypass valve is in fluid communication with a hydraulic fluid cooler supply line to the hydraulic fluid cooler; wherein the cooler bypass valve is configured to transition to the first cooler bypass position while a first pressure of the hydraulic fluid in the hydraulic fluid cooler supply line exceeds a combined pressure of a second pressure of the hydraulic fluid in the hydraulic supply line and a third pressure of the spring, and to otherwise transition to the second cooler bypass position. 10. The cooler bypass valve assembly of claim 2, wherein the controller is configured to cause the flow control valve to be in the first position when the temperature of the hydraulic fluid is below a predetermined temperature. 11. The cooler bypass valve assembly of claim 10, wherein the controller is configured to cause the flow control valve to be in the second position when the temperature of the hydraulic fluid is equal to or exceeds the predetermined temperature. 12. The cooler bypass valve assembly of claim 10, further comprising an ambient temperature sensor configured to output a second signal indicative of an ambient air temperature of the air surrounding an area in which the cooler bypass valve assembly is located, wherein the controller is configured to adjust the predetermined temperature based on the ambient air temperature. 13. A cooler bypass valve assembly for an agricultural implement, comprising: a valve block, comprising: a housing;a cooler bypass valve disposed within the housing, wherein the cooler bypass valve is moveable between a cooler bypass position and a cooler position, and the cooler bypass valve is configured to receive hydraulic fluid from a hydraulic fluid supply, to facilitate flow of the hydraulic fluid through the cooler bypass valve to a cooler bypass and to facilitate a restricted flow of the hydraulic fluid through the cooler bypass valve to a hydraulic fluid cooler while the cooler bypass valve is in the cooler bypass position, and to block flow of the hydraulic fluid to the cooler bypass and to facilitate flow of the hydraulic fluid through the cooler bypass valve to the hydraulic fluid cooler while the cooler bypass valve is in the cooler position, and wherein the hydraulic fluid cooler is configured to reduce a temperature of the hydraulic fluid, and the cooler bypass is configured to direct the hydraulic fluid around the hydraulic fluid cooler to a hydraulic system; anda flow control valve disposed within the housing and configured to selectively transition the cooler bypass valve between the cooler bypass position and the cooler position by controlling hydraulic fluid pressure to one side of the cooler bypass valve. 14. The cooler bypass valve assembly of claim 13, comprising: a control assembly configured to control the flow control valve based on the temperature of the hydraulic fluid, wherein a flow control valve position is adjustable between a first position configured to facilitate flow of the hydraulic fluid from the one side of the cooler bypass valve and a second position configured to block flow of the hydraulic fluid from the one side of the cooler bypass valve, and wherein the control assembly comprises: a temperature sensor configured to output a signal indicative of the temperature of the hydraulic fluid; anda controller communicatively coupled to the temperature sensor and to the flow control valve, wherein the controller is configured to control the flow control valve position based on the signal. 15. The cooler bypass valve assembly of claim 14, wherein the temperature sensor is configured to measure the temperature of the hydraulic fluid in a low pressure line upstream from a hydraulic pump. 16. The cooler bypass valve assembly of claim 13, wherein the cooler bypass valve is a two-position, three-way valve. 17. A cooler bypass valve assembly for an agricultural implement, comprising: a cooler bypass valve fluidly coupled to an inlet of the cooler bypass valve assembly, wherein the cooler bypass valve is configured to facilitate flow of hydraulic fluid through the cooler bypass valve from the inlet to a cooler bypass and to facilitate a restricted flow of the hydraulic fluid through the cooler bypass valve from the inlet to an outlet of the cooler bypass valve assembly while a first hydraulic pressure at the outlet exceeds a second hydraulic pressure at the inlet by a threshold value, and to otherwise block flow of the hydraulic fluid to the cooler bypass and to facilitate flow of the hydraulic fluid through the cooler bypass valve to the outlet, wherein the outlet is configured to extend to a hydraulic fluid cooler configured to reduce a temperature of the hydraulic fluid, and the cooler bypass is configured to direct the hydraulic fluid around the hydraulic fluid cooler to a hydraulic system;a flow control valve fluidly coupled to the inlet, wherein the flow control valve is adjustable to vary hydraulic pressure at the inlet to control the cooler bypass valve. 18. The cooler bypass valve assembly of claim 17, comprising: a temperature sensor configured to output a first signal indicative of the temperature of the hydraulic fluid, wherein the temperature sensor is configured to measure the temperature of the hydraulic fluid in a low pressure line upstream from a hydraulic pump;an ambient temperature sensor configured to output a second signal indicative of an ambient temperature; anda controller communicatively coupled to the flow control valve, to the temperature sensor, and to the ambient temperature sensor, wherein the controller is configured to receive the first signal from the temperature sensor indicative of the temperature of the hydraulic fluid and the second signal from the ambient temperature sensor indicative of the ambient temperature, and the controller is configured to control the flow control valve based on the temperature of the hydraulic fluid and on the ambient temperature. 19. The cooler bypass valve assembly of claim 18, wherein the flow control valve comprises an actuator, and the actuator is communicatively coupled to the controller. 20. The cooler bypass valve assembly of claim 19, comprising a user interface configured to output a third signal to the controller indicative of one or more threshold temperatures, wherein the controller is configured to instruct the flow control valve to transition to a first position while the temperature of the hydraulic fluid is below the one or more threshold temperatures, and to instruct the flow control valve to transition to a second position while the temperature of the hydraulic fluid is above the one or more threshold temperatures.
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이 특허에 인용된 특허 (13)
Heinrich Duckinghaus DE, Apparatus and method for improving the efficiency of a hydraulic fluid cooler in a self-propelled agricultural machine.
Denbraber Lee R. (Peoria IL) Hawkins Mark R. (Chillicothe IL) Meinhold David R. (Metamora IL) Zmuda Steven J. (Dunlap IL), Cold oil protection circuit for a hydraulic system.
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