Clutch system with at least one multiple-plate clutch arrangement
AssigneeZF Sachs AG
InventorJochen Kuhstrebe
Life of this patent
Estimating the term…
Abstract
A control unit associated with the cooling fluid supply switches the flow of cooling fluid on or off by controlling the cooling fluid supply in the course of a respective shifting process in which the transmission is shifted up from a lower gear to a higher gear or in down from a higher gear to a lower gear to deliberately exert inertial forces on at least one of the plate carriers by means of the flow of cooling fluid and, therefore, to act on this plate carrier in an accelerating or decelerating manner or in order to deliberately prevent inertial forces of this type being exerted on at least one of the plate carriers by the flow of cooling fluid.
Claims17
A clutch system for a drive train of a motor vehicle, said clutch system comprising:
- a clutch device for transmitting torque between a drive unit and a transmission having an input shaft and multiple speeds, said transmission having gears and synchronizing units which match speeds of the starting gear and a target gear during shifting, said clutch device comprising a multiple-plate clutch arrangement associated with said input shaft and having an inner plate carrier, an outer plate carrier, and a plate stack arranged between said inner plate carrier and said outer plate carrier, said inner plate carrier having a radial inside, said outer plate carrier having a radial outside;
- means for supplying a flow of cooling fluid to said plate stack from one of said radial inside toward said radial outside and said radial outside toward said radial inside, and
- an electronic control unit for switching said flow of cooling fluid on and off during shifting so that inertial forces are one of exerted on at least one of said plate carriers by said flow of cooling fluid and prevented from being exerted on at least one of said plate carriers by said flow of cooling fluid, and so that loading of synchronizing units is reduced during shifting from a starting gear to a target gear.
A drive train of a motor vehicle, said drive train comprising a drive unit, a transmission, and a clutch system, the transmission having gears and synchronizing units which match speeds of a starting gear and a target gear during shifting, said clutch system comprising:
- a clutch device for transmitting torque between a drive unit and a transmission having an input shaft and multiple speeds, said clutch device comprising a multiple-plate clutch arrangement associated with said input shaft and having an inner plate carrier, an outer plate carrier, and a plate stack arranged between said inner plate carrier and said outer plate carrier, said inner plate carrier having a radial inside, said outer plate carrier having a radial outside;
- means for supplying flow of cooling fluid to said plate stack from one of said radial inside toward said radial outside and said radial outside toward said radial inside, and
- an electronic control unit for switching said flow of cooling fluid on and off during shifting so that inertial forces are one of exerted on at least one of said plate carriers by said flow of cooling fluid and prevented from being exerted on at least one of said plate carriers by said flow of cooling fluid, and so that loading of synchronizing units is reduced during shifting from a starting gear to a target gear.
Dependencies are inferred from the claim text.