La présente invention concerne la présente invention concerne un véhicule terrestre, qui comprend une transmission infiniment variable (IVT) entre une première source d’entraînement et/ou une machine électrique et au moins une roue du véhicule, la transmission IVT étant agencée de manière que le rapport de réduction soit maximal lorsqu’aucun entraînement n’est activé. Figure 1 à publier
The objective of the invention: To provide an IVT transmission that allows "freewheeling" operation and therefore makes it possible to eliminate, for example in a bicycle, the freewheel type clutch in the hub of the driven wheel. The prior art: It is known practice to use, for example in vehicles equipped with an internal combustion engine, IVT transmissions for clutchless starting. Such an IVT (infinitely variable transmission) makes it possible, without the use of a clutch, for the internal combustion engine to turn when the vehicle is stationary (= vehicle wheel speed zero). The invention (infinitely variable transmission (IVT)): To exchange the input shaft and the output shaft of an IVT of the prior art in order to obtain a transmission ratio in which the output shaft (rather than the input shaft) is able to turn if the input shaft (rather than the output shaft) is stationary (= zero rotational speed). This ratio, if defined by dividing the rotational speed of the output shaft (= of the driven wheel) by the rotational speed of the input shaft (= of the driven wheel) is infinite. If the cyclist wishes to cease pedalling, the transmission ratio is not yet selected as "infinite" (= geared neutral) and the cyclist cannot yet stop pedalling without taking his feet off the pedals that are still turning. Therefore, it is necessary to detect whether the cyclist wishes to cease pedalling and, if they do, switch the IVT to the "infinite" (= geared neutral) transmission ratio. This method is essential for solving the objective of the invention (= provide a "freewheeling" function).
Véhicule terrestre à assistance électrique avec une transmission infiniment variable inversée
2023-06-16
Patent
Electronic Resource
French
VEHICULE TERRESTRE A ASSISTANCE ELECTRIQUE AVEC UNE TRANSMISSION INFINIMENT VARIABLE INVERSEE
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