Off-road vehicle engine mounting

Patent metadata

Field	Value
Publication number	US-12291267-B2
Application number	US-202318395929-A
Country	US
Kind code	B2
Filing date	Dec 26, 2023
Priority date	Jan 5, 2023
Publication date	May 6, 2025
Grant date	May 6, 2025

Abstract

The present disclosure relates to an off-road vehicle having different features such as an engine assembly, a frame having a frame structure, and a rear mount assembly facilitating easy installation of the engine assembly, and a method of installing the engine assembly. Embodiments of the present disclosure also describe a removable frame member facilitating the installation of the engine assembly from a seating area into a rearward portion of the vehicle. The removable frame member is positioned at least partially forward of the installed engine assembly and in a lateral direction of the vehicle. The frame structure and the rear mount assembly provide more efficient assembly of the engine and transmission assembly into a tight space envelope.

First claim

What is claimed is:

1. A rear mount assembly in an off-road vehicle for attaching an engine assembly to a frame, the rear mount assembly comprising:
a rear mount bracket defined by a rear central portion having a first side edge, a second side edge, and a first supporting flange extending upwardly from the first side edge and a second supporting flange extending upwardly from the second side edge, the rear mount bracket configured to be attached to a rear part of the engine assembly at one or both of the first supporting flange and the second supporting flange;
a rear transverse bar defined by a first end, a second end, and a rear central part extending therebetween, the rear central part having a top surface, the rear transverse bar configured to be attached to the rear central portion of the rear mount bracket at the top surface of the rear central part; and
a pair of rear isolators configured to be attached to the rear transverse bar.

2. The rear mount assembly of claim 1 , wherein at least one of the first supporting flange and the second supporting flange comprises at least one first hole for attaching the rear part of the engine assembly.

3. The rear mount assembly of claim 2 , wherein at least one of the first supporting flange and the second supporting flange is attached to the rear part of the engine assembly via at least one first fastener corresponding to the at least one first hole.

4. The rear mount assembly of claim 1 , wherein the rear central portion of the rear mount bracket is defined by an upper surface, a lower surface, and at least one second hole extending from the upper surface to the lower surface.

5. The rear mount assembly of claim 4 , wherein the rear central portion is configured to be attached to the rear transverse bar via an at least one second fastener corresponding to the at least one second hole.

6. The rear mount assembly of claim 4 , wherein the lower surface of the rear central portion abuts the top surface of the rear transverse bar when attached therewith.

7. The rear mount assembly of claim 1 , wherein the pair of rear isolators comprises a first rear isolator configured to be attached to the first end of the rear transverse bar and a second rear isolator configured to be attached to the second end of the rear transverse bar.

8. The rear mount assembly of claim 7 , wherein the first rear isolator and the second rear isolator are positioned in parallel to each other when attached with the first end and the second end of the rear transverse bar.

9. The rear mount assembly of claim 1 , wherein the pair of rear isolators are positioned in parallel to a pair of front isolators of a front mount assembly.

10. The rear mount assembly of claim 1 , wherein the rear central portion comprises an elevated triangular section extending from an upper surface thereof towards each of the pair of supporting flanges.

11. The rear mount assembly of claim 1 , wherein the rear transverse bar is placed in a lateral direction of the vehicle.

12. An engine mount assembly for attaching an engine assembly to a frame, the engine assembly comprising a front part and a rear part, the frame comprising a front frame coupling and a rear frame coupling, said engine mount assembly comprising:
a front mount assembly for attaching the front part of the engine assembly to the front frame coupling of the frame, the front mount assembly comprising a pair of front isolators; and
a rear mount assembly for attaching the rear part of the engine assembly to the rear frame coupling of the frame, the rear mount assembly comprising:
a rear mount bracket defined by a rear central portion having a first side edge, a second side edge, and first and second supporting flanges extending from each of the first side edge and the second side edge, respectively, the rear mount bracket configured to be attached to the rear part of the engine assembly at one or both of the first and second supporting flanges;
a rear transverse bar defined by a first end, a second end, and a rear central part extending therebetween, the rear central part having at least a top surface, the rear transverse bar configured to be attached with the rear central portion of the rear mount bracket at the rear central part; and
a pair of rear isolators configured to be attached to the rear transverse bar.

13. The engine mount assembly of claim 12 , wherein the pair of rear isolators comprises a first rear isolator configured to be attached to the first end of the rear transverse bar and a second rear isolator configured to be attached to the second end of the rear transverse bar.

14. The engine mount assembly of claim 13 , wherein the first rear isolator and the second rear isolator are positioned in parallel to each other when attached with the first end and the second end of the rear transverse bar.

15. The engine mount assembly of claim 12 , wherein the pair of rear isolators are positioned in parallel the pair of front isolators.

16. A method of installing an engine assembly in an off-road vehicle, the off-road vehicle comprising a frame extending in a longitudinal direction of the vehicle and defining a seating area and an engine area, the frame having a front mount assembly comprising a pair of front isolators and a rear mount assembly comprising a rear mount bracket having a rear central portion and a pair of supporting flanges, a rear transverse bar, and a pair of rear isolators, the method comprising:
attaching a rear part of the engine assembly with the pair of supporting flanges of the rear mount bracket using at least one first fastener;
attaching the rear transverse bar with the pair of rear isolators;
guiding the engine assembly towards the attached rear transverse bar such that a lower surface of the rear central portion abuts a top surface of the rear transverse bar; and
attaching the rear mount bracket with the rear transverse bar using at least a second fastener.

17. The method of claim 16 , wherein the step of guiding the engine assembly comprises the step of receiving the engine assembly at least partially within the seating area of the frame and moving the engine assembly in the longitudinal direction from the seating area to the engine area.

18. The method of claim 17 , wherein the frame of the off-road vehicle includes a removable cross bar extending in a transverse direction and positioned rearward of the seating area; the method further comprising the step of removing the cross bar before receiving the engine assembly at least partially within the seating area of the frame.

19. The method of claim 16 , wherein the step of guiding the engine assembly comprises the step of receiving the engine assembly in the engine area.

20. The method of claim 16 , wherein the step of attaching the rear isolators comprises aligning the rear isolators parallel to the front isolators.

Assignees

• Arctic Cat Inc

Inventors

• Klaphake Ethan Randall
• Sorenson Derek
• Macdonald Todd Ethan

Classifications

• B62D27/023 Primary

  Assembly of structural joints · CPC title

• B60K2005/006

  the internal combustion or jet propulsion unit is arranged behind the rear axle · CPC title

• B62D25/082

  Engine compartments · CPC title

• B60K5/1241

  Link-type support (B60K5/125, B60K5/1275 take precedence) · CPC title

• B60K5/1216

  characterised by the location of the supports relative to the motor or to each other (B60K5/1225 takes precedence) · CPC title