Hydraulic clutch with centrifugal and manual valves
阅读：189发布：2022-03-01
专利汇可以提供Hydraulic clutch with centrifugal and manual valves专利检索，专利查询，专利分析的服务。并且A clutch for use with a throttle-controlled engine and a synchromesh transmission which includes a passage therethrough for the transmission of engine oil and uses the pressure thereof to move an annular piston for engaging, disengaging and slippingly engaging clutch driving and driven discs, the oil returning to the engine sump after flowing across the discs, serving as a coolant therefor. The clutch includes three springloaded valves, the first of which controls the inlet and the exhaust of the engine oil in response to full depressions of the clutch pedal and further variably regulates the pressure supplied to the second of the three valves in response to partial depressions of the clutch pedal. The second valve regulates the pressure of the oil on the annular piston in response to centrifugal force resulting from engine speed and further in response to the variable pressure controlled by the first valve, resulting in a change in stall speed. The third valve variably controls the volume of the coolant flowing across the clutch discs in response to centrifugal force resulting from engine speed.，下面是Hydraulic clutch with centrifugal and manual valves专利的具体信息内容。
1. A clutch mechanism for a power train, said clutch mechanism comprising a source of fluid under pressure, a power input shaft, a power output shaft, a clutch pedal, driving and driven clutch discs, piston means for at times engaging and at times disengaging said driving and driven discs, a driving hub connecting said driving discs to said input shaft for rotation therewith, a driven hub connecting said driven discs to said power output shaft for at times driving said power output shaft, a chamber formed adjacent said piston means, first passage means (56, 54, 38, 40, 50, 58, 94, 90) for communicating said fluid under pressure from said source of fluid to said chamber, first valve means (64) operatively connected to said first passage means for controlling the flow of fluid through said first passage means, second passage means (131, 130, 124, 132, 142, 144, 148, 146, 152) communicating said fluid from said chamber back to said source past said driving and driven discs, thereby cooling said driving and driven discs, second valve means (106, 118) responsive to centrifugal force and operatively connected to said second passage means for varying the pressure in said chamber under the action of centrifugal force, third passage means (70/46, 52, 60, 110, 108) for at times communicating said fluid between said first passage means and the radial inner end of said second valve means, biasing means operatively connected to said clutch pedal and said first valve means for causing said first valve means to regulate the fluid pressure on said radial inner end of said second valve means through said third passage means in response to manual depression of said clutch pedal, thereby further varying the pressure in said chamber, and third valve means (100) responsive to centrifugal force and operatively connected to said first passage means for varying the flow of fluid from said first passage means to said chamber to control the amount of coolant supplied through said second passage means to said driving and driven discs in response to said centrifugal force.
2. The clutch mechanism described in claim 1, wherein said piston means includes an annular piston positioned adjacent said driving clutch discs, and seals mounted on the inner and outer circumferential surfaces of said annular piston.
3. The clutch mechanism described in claim 1, wherein said first mentioned passage means includes a fixed restriction (94), and a plurality of restrictions (96, 98) communicating between said first passage means and said chamber in response to movement of said third valve means (100) therepast.
4. A power train comprising a throttle-controlled engine including a crankshaft and a source of fluid under pressure, a synchromesh transmission and a hydraulic clutch, said hydraulic clutch including a power input shaft operatively connected to said crankshaft, a power output shaft operatively connected to said synchromesh transmission, clutch driving means connected to said crankshaft, driven means connected to rotate said power output shaft upon engagement therewith by said clutch driving means, first passage means (56, 54, 38, 40, 50, 58, 94, 90, 131, 130, 124, 132, 142, 144, 148, 146, 152) for transmitting said fluid from said source past said driving and driven means back to said source, first (64) and second (106, 118) valve means and second passage means (70/46, 44, 52, 60) communicating therebetween, a clutch pedal operatively connected to said first valve means, said first valve means being operatively connected to said first and second passage means for permitting said fluid to enter said first and second passage means when said clutch pedal is in a partially or fully retracted position and to exhaust from said first passage means only when said clutch pedal is in a fully depressed position, said second valve means being influenced by the regulated flow of said fluid past said first valve means into said second passage means to produce a first predetermined stall speed when said clutch pedal is fully retracted and a variable higher stall speed when said clutch pedal is variably partially depressed, said driving means being disengaged when said clutch pedal is fully depressed.
5. The power train described in claim 4, and additional valve means (100) responsive to centrifugal force reflective of the speed of said engine for varying the rate of flow of said fluid for automatically cooling said driving and driven means.
6. A hydraulic clutch device for a power train including a source of fluid under pressure, said clutch device comprising a clutch pedal, a power input shaft, a power output shaft, driving and driven means for at times interconnecting and at times disconnecting said input and output shafts, and valve means (106, 118, 64) operatively connected to said clutch pedal and to said driving and driven means for regulating the pressure of said fluid on said driving means, the pressure required for frictional engagement between said driving means and said driven means being variable to provide selected operational stall speeds between predetermined limits in response in part to input shaft speed and in part to the influence of partial depressions of said clutch pedal on said valve means, said valve means including first (106, 118) and second (64) spring-loaded valve means and said second spring-loaded valve means including a feed valve having lands and recessed portions formed thereon cooperating with inlet and outlet ports for varying the pressure of said fluid on said first spring-loaded valve means in response to said partial depressions of said clutch pedal and for controlling the inlet and exhaust of said fluid in response to full depressions of said clutch pedal, a first spring (76) operatively connected between said feed valve and said clutch pedal for resisting said partial depressions of said clutch pedal, and a second spring (73) positioned intermediate said feed valve and a fixed abutment.
7. A power train comprising a throttle-controlled engine including an engine shaft and a source of fluid under pressure, a synchromesh transmission and a hydraulic clutch, said hydraulic clutch including a clutch pedal and linkage extending therefrom, a power input shaft operatively connected to said engine shaft, a power output shaft operatively connected to said synchromesh transmission, driving and driven means for at times interconnecting and at times disconnecting said input and output shafts, valve means (106, 118) operatively connected to said driving and driven means for regulating the pressure of said fluid on said driving means for engaging said driven means to increase the pressure proportional to increasing centrifugal force indicative of engine speed and additional valve means (64, 76, 73) operatively connected to said first-mentioned valve means and to said clutch pedal for varying the effect of said increasing centrifugal force to reduce the pressure of said fluid being regulated by said first-mentioned valve means on said driving means at all speeds in proportion to controlled manually variable partial depressions of said clutch pedal while maintaining said increasing pressure proportional to increasing speeds at lower pressure values to permit increased speeds without stalling the engine, said additional valve means including a slidably mounted valve body, a first spring (76) positioned between said clutch pedal linkage and one end of said slidably mounted valve body, a fixed spring retainer, and a second spring (73) positioned intermediate the other end of said slidably mounted valve body and said fixed spring retainer, there being a first predetermined stall speed present when said clutch pedal is fully retracted and a second predetermined stall speed discernible when said first spring is fully compressed by movement of said clutch pedal just prior to the compression of said second spring by continued movement of said clutch pedal.
8. A power train comprising a throttle-controlled engine including an engine shaft and a source of fluid under pressure, a synchromesh transmission and a hydraulic clutch, said hydraulic clutch including a clutch throw-out collar axially movable in response to movement of a clutch pedal, a power input shaft operatively connected to said engine shaft, a power output shaft operatively connected to said synchromesh transmission, driving and driven means for at times interconnecting and at times disconnecting said input and output shafts, first valve means (106, 118) operatively connected to said driving and driven means for regulating the pressure between said driving and driven means to eliminate having to depress said clutch pedal to disengage said driving and driven means to prevent the engine from stalling by reducing the pressure between said driving and driven means to limit reduction of the speed of said driving means as the speed approaches engine stall speed to prevent reaching engine stall speed, said first valve means including a first spring-loaded regulating valve means (106, 128, 118) radially located adjacent said driving and driven means for regulating the pressure of said fluid on said driving means in response to centrifugal force, and second valve means (64) operatively connected to said first valve means and to said clutch pedal for regulating fluid pressure influencing said first valve means by causing said first valve means to further regulate the pressure of said fluid on said driving means to vary the stall speed between predetermined limits in response to controlled manually variable partial depressions of said clutch pedal, said second valve means including a second spring-loaded regulating valve means (64, 76, 73) located adjacent said first valve means for reducing the pressure of said fluid influencing said first valve means in response to said manually variable partial depressions of said clutch pedal, the effect of centrifugal force on said first valve means being reduced by said variable pressure of said fluid from said second valve means, said second spring-loaded regulating valve means including a slidably mounted valve body, a first spring (76) positioned intermediate said clutch throw-out collar and one end of said slidably mounted valve body, a fixed spring retainer, and a second spring (73) positioned intermediate the other end of said slidably mounted valve body and said fixed spring retainer, there being a first predetermined stall speed present when said clutch pedal is fully retracted and a second predetermined stall speed discernible when said first spring is fully compressed by movement of said clutch pedal just prior to the compression of sAid second spring by continued movement of said clutch pedal.
9. A hydraulic clutch device for a power train including a source of fluid under pressure, said clutch device comprising a clutch pedal, a power input shaft, a power output shaft, driving and driven means for at times interconnecting and at times disconnecting said input and output shafts, and valve means (106, 118, 64) operatively connected to said clutch pedal and to said driving and driven means for regulating the pressure of said fluid on said driving means, the frictional contact between said driving means and said driven means being variable to provide selected operational stall speeds between predetermined limits in response in part to input shaft speed and in part to the influence of variable manual partial depressions of said clutch pedal on said valve means, said valve means including first (106, 118, 128) and second (64, 76, 73) spring-loaded valve means and said second spring-loaded valve means including a feed valve (64) having lands and recessed portions formed thereon cooperating with inlet and outlet ports for varying the pressure of said fluid on said first spring-loaded valve means in response to said variable manual partial depressions of said clutch pedal and for controlling the inlet and exhaust of said fluid in response to full depression of said clutch pedal, a clutch throw-out collar mechanism slidable mounted on said power output shaft and operatively connected to said clutch pedal, and spring means (76) disposed between one end of said feed valve and said clutch throw-out collar mechanism for variably moving said feed valve relative to said ports in response to said variable manual partial depressions of said clutch pedal.
10. The device described in claim 6, wherein said driving and driven means includes driving discs and driven discs and an annular piston for moving said driving discs into slipping engagement with said driven discs in response to the pressure of said fluid so long as said spring means is not fully compressed between said feed valve and said clutch throwout mechanism.
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