Clutch assembly and method for operation of the clutch assembly
AssigneeDana Heavy Vehicle Systems Group, LLC
InventorJordan M. Houser
Life of this patent
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Abstract
A transmission system and a method for operation of said transmission is provided. The transmission system includes a first friction clutch with a first set of discs splined to a shaft and a second set of discs splined to an inner circumference of a first gear. The system further includes a first hydraulic passage extending through the shaft and including an outlet in the shaft that directly supplies a lubricant to the first and second sets of discs during transmission system operation, where the first gear includes outer teeth that are positioned circumferentially around the first gear outward from the first and second sets of discs and is designed to mesh with a second gear in the transmission system.
Claims16
A transmission system, comprising:
- a first friction clutch including:
- a first set of discs directly splined to a shaft;
- and
- a second set of discs splined to an inner circumference of a first gear;
- a first hydraulic passage extending through the shaft and including an outlet in the shaft that directly supplies a lubricant to the first and second sets of discs during transmission system operation;
- and
- a bearing coupled to the shaft and including an inner axial side which includes an opening that is formed between an inner race and an outer race and is directly adjacent to an axial side of the first friction clutch;
- wherein the bearing includes a shield on an outer axial side of the bearing;
- and
- wherein the first gear includes outer teeth that are positioned circumferentially around the first gear outward from the first and second sets of discs and is designed to mesh with a second gear in the transmission system, wherein the shaft includes an input gear that is rotationally coupled to an electric motor.
A method for operation of a transmission system, comprising:
- in a first friction clutch, selectively transferring mechanical power directly from a first set of discs directly splined to a shaft to a second set of discs splined to an inner circumference of a first gear;
- and
- flowing a lubricant directly from the first friction clutch to
- an opening that is formed on an inner axial side of a bearing between an inner race and an outer race of the bearing;
- wherein the bearing includes a shield on an outer axial side of the bearing;
- and
- wherein the first gear includes outer teeth that are positioned circumferentially around the first gear outward from the first and second sets of discs and is designed to mesh with a second gear in the transmission system.
A multi-speed transmission system in a vehicle, comprising:
- a first friction clutch including:
- a first set of discs directly splined to a shaft;
- and
- a second set of discs splined to an inner circumference of a first gear;
- a bearing coupled to the shaft and including an inner axial side which includes an opening that is formed between an inner race and an outer race and is directly adjacent to an axial side of the first friction clutch;
- and
- a second friction clutch including:
- a third set of discs splined to the shaft;
- and
- a fourth set of discs splined to an inner circumference of a second gear;
- wherein the bearing includes a shield on an outer axial side of the bearing;
- wherein the first gear includes outer teeth that are positioned circumferentially around the first gear outward from the first and second sets of discs;
- wherein the second gear includes outer teeth that are positioned circumferentially around the second gear outward from the third and fourth sets of discs;
- and
- wherein the first and second gears have different sizes.
Dependencies are inferred from the claim text.