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AssigneeDaimlerChrysler AG
InventorsRalf Sperber, Ernst Tscheplak, Günter Wörner
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The invention is based on a toothed gear transmission in which an input shaft is connected to an output shaft by a first and a second partial transmission, which are disposed parallel to each other in the power flow and which both have a frictionally engaged load shifting clutch and an intermediate shaft, in which each of the intermediate shafts can be effectively connected to the input shaft through the load shifting clutch, and with at least one first transmission constant. It is proposed that for starting, the first load shifting clutch can be placed in effective connection with the output shaft through a transmission constant and the second load shifting clutch can be placed in effective connection with the output shaft through a transmission constant, each at a gear ratio of the lowest gear speed.
A toothed gear transmission comprising an input shaft connected to an output shaft by a first and a second partial transmission, said partial transmissions disposed parallel to each other in the power flow and both having one frictionally engaged load shifting clutch and one intermediate shaft, each intermediate shaft adapted to be effectively connected through its load shifting clutch to the input shaft, and having at least one first transmission constant, wherein the first load shifting clutch is adapted to be placed in effective connection with the output shaft through the at least one first transmission constant and the second load shifting clutch is adapted to be placed in effective connection with the output shaft through the at least one transmission constant, each at a gear ratio of a lowest gear speed for starting.
A process for shifting a toothed gear transmission, wherein, as a function of at least one operating parameter, a first, a second, or both the first and second load shifting clutches together are used for starting.
Dependencies are inferred from the claim text.