Electronically-controlled continuously variable transmission for a utility vehicle

Patent metadata

Field	Value
Publication number	US-12504070-B2
Application number	US-202217587486-A
Country	US
Kind code	B2
Filing date	Jan 28, 2022
Priority date	Jan 29, 2021
Publication date	Dec 23, 2025
Grant date	Dec 23, 2025

Abstract

A utility vehicle includes a frame assembly, a plurality of ground-engaging members supporting the frame assembly, and a powertrain assembly operably coupled to the ground-engaging members and including a prime mover and a continuously variable transmission. Additionally, the utility vehicle includes an operator defined by a portion of the frame assembly and including seating for at least an operator. The utility vehicle also includes an electrical assembly comprising an electric motor operably coupled to the continuously variable transmission. The electric motor is positioned rearward of the operator area.

First claim

What is claimed is:

1 . A utility vehicle, comprising: a frame assembly; a plurality of ground-engaging members supporting the frame assembly; a powertrain assembly operably coupled to the ground-engaging members and including a prime mover and a continuously variable transmission, the continuously variable transmission comprising a fixed sheave and a moveable sheave; an operator area defined by a portion of the frame assembly and including seating for at least an operator; an electrical assembly comprising an electric motor operably coupled to the continuously variable transmission, the electric motor being positioned rearward of the operator area and having an output extending outwardly from the electric motor away from the prime mover, and the electrical assembly configured to control a spacing between the fixed sheave and the moveable sheave; and a housing defining a first compartment and a second compartment, a drive clutch of the continuously variable transmission positioned within the first compartment and the electric motor positioned within the second compartment.

2 . The utility vehicle of claim 1 , wherein the seating includes an operator seat and a passenger seat, and the electric motor is positioned generally rearward of the operator seat.

3 . The utility vehicle of claim 2 , wherein the electric motor is positioned laterally outward of a portion of the operator seat.

4 . The utility vehicle of claim 1 , wherein the electric motor is longitudinally intermediate the seating and the continuously variable transmission.

5 . The utility vehicle of claim 1 , wherein the electric motor is longitudinally intermediate a portion of the prime mover and the seating.

6 . The utility vehicle of claim 1 , wherein the continuously variable transmission includes a housing and the electric motor is positioned within the housing.

7 . The utility vehicle of claim 6 , further comprising an actuation assembly operably coupled to the continuously variable transmission, and the actuation assembly is positioned within the housing.

8 . The utility vehicle of claim 7 , wherein the actuation assembly includes the electric motor.

9 . The utility vehicle of claim 1 , further comprising a torsion damper positioned generally intermediate a portion of the prime mover and a drive clutch of the continuously variable transmission.

10 . The utility vehicle of claim 8 , further comprising a controller operably coupled to the powertrain, and the controller is operable to control the position of the moveable sheave.

11 . The utility vehicle of claim 1 , wherein the electrical assembly is configured to discretely control the spacing between the fixed sheave and the moveable sheave.

12 . A utility vehicle, comprising:
a frame assembly; a plurality of ground-engaging members supporting the frame assembly; a powertrain assembly operably coupled to the ground-engaging members and including a prime mover and a continuously variable transmission comprising a drive clutch and a driven clutch; an operator area defined by a portion of the frame assembly and including seating for at least an operator; an electrical assembly comprising an electric motor operably coupled to the continuously variable transmission, the electric motor being positioned rearward of the operator area; a housing defining a first compartment and a second compartment, a drive clutch of the continuously variable transmission positioned within the first compartment and the electric motor positioned within the second compartment; and wherein the prime mover is operably coupled to the continuously variable transmission on a first side of the drive clutch and the electrical assembly is operably coupled to the continuously variable transmission on a second side of the drive clutch opposite the first side.

13 . The utility vehicle of claim 12 , further comprising a geartrain coupled between the electric motor and the continuously variable transmission.

14 . The utility vehicle of claim 12 , further comprising a linear actuator coupled between the electric motor and the continuously variable transmission.

15 . The utility vehicle of claim 12 , wherein the electric motor includes an output extending outwardly on a first side of the continuously variable transmission, and the prime mover is positioned on a second side of the continuously variable transmission opposite the first side.

16 . The utility vehicle of claim 12 , wherein the second compartment is integral with the first compartment.

17 . The utility vehicle of claim 16 , wherein the second compartment separates the electric motor from the drive clutch of the continuously variable transmission.

18 . The utility vehicle of claim 16 , wherein the second compartment defines an aperture, and the aperture is adapted to direct air toward the electric motor.

Assignees

• Polaris Inc

Inventors

• Truskolaski Dylan T
• Hussong Zacharey J
• Pinkley Gary A
• Lechat Adrien O
• Schleif Andrew C
• Tholen Ryan A
• Ripley Anthony J
• Peterman Jeffrey I
• Willenbring Samuel C

Classifications

• F16H63/3043

  comprising friction clutches or brakes · CPC title

• F16H2063/3063

  using screw devices · CPC title

• F16H2061/1272

  the failing part is a part of the final output mechanism, e.g. shift rods or forks · CPC title

• F16H2061/005

  Supply of electric power, e.g. batteries for back up supply · CPC title

• F16H61/12

  Detecting malfunction or potential malfunction, e.g. fail safe (in control of hydrostatic gearing F16H61/4192) {; Circumventing or fixing failures} · CPC title