Traction system for hybrid vehicles
OwnerAntonio Francisco Cesaroniinventor
Life of this patent
Estimating the term…
Abstract
A continuous speed variation device includes a input friction disc, a output friction disc, and at least three idle oscillating friction roller members. The input and output friction discs have a friction surface of toroidal shape and the idle oscillating roller members have a friction surface shaped in the form of a spherical dome.
Claims17
A toroidal friction continuous speed variation device comprising:
- an input friction disc connected to a first power branch;
- an output friction disc connected to a second power branch, and at least two roller members;
- the roller members having a friction surface shaped in the form of a spherical dome, wherein the contact pitch diameter between the input and output friction discs and the roller member which is positioned on the discs themselves, does not vary with the variation of the transmission ratio of the continuous speed variation device.
A continuous speed variation device comprising an input friction disc, an output friction disc, at least two roller members, input and output friction discs having a friction surface of toroidal shape and the roller members having a friction surface shaped in the form of a spherical dome wherein the axis of rotation of the roller members are configured such that they are substantially perpendicular to the axis of rotation of the input and output friction discs when the continuous speed variation device has ratio of 1 and, the contact pitch diameter between the roller member and the input and output friction discs which is positioned on the discs themselves, does not vary with the variation of the transmission ratio of the continuous speed variation device, wherein the input and output friction discs are capable of self-aligning by means of a displacement along a radial direction in order to achieve a balanced contact load against the three roller members.
A toroidal friction continuous speed variation device comprising:
- an input friction disc connected to a first power branch;
- an output friction disc connected to a second power branch, and
- at least two roller members, the roller members having a friction surface shaped in the form of a spherical dome, wherein the input and output friction discs are capable of displacement along a radial direction.
A toroidal friction continuous speed variation device comprising:
- an input friction disc connected to a first power branch;
- an output friction disc connected to a second power branch, and
- at least two roller members, the roller members having a friction surface shaped in the form of a spherical dome;
- and
- an axial cam, interposed between the complementary disk and the input and output friction discs, transmitting torque between the input and output friction discs and a complementary disk and wherein a preload is provided to the input and output friction discs along the axis of rotation when torque is transmitted.
A toroidal friction continuous speed variation device comprising:
- an input friction disc connected to a first power branch;
- an output friction disc connected to a second power branch, and
- at least two roller members, the roller members having a friction surface shaped in the form of a spherical dome;
- and
- two input friction discs, two output friction discs and six roller members, arranged in a such configuration that the input and output friction discs are laying on the same rotation axis, the two input friction discs are in connection between them and rotating in the same direction and, the two output friction discs are in connection between them and rotating in an opposite direction referred to the input friction discs.
Dependencies are inferred from the claim text.