公开(公告)号：US20250092918A1

公开(公告)日：2025-03-20

申请号：US18830810

申请日：2024-09-11

Applicant: Polaris Industries Inc.

Inventor： Prasad Bhaskar Poojari ,  Daniel S. Weber ,  Marc Vanderhoof ,  Bryce R. Evans ,  Jacob Grobbel ,  Adam Schlangen ,  Steve Nelson ,  Michael Whiting ,  Ron Danielson ,  Brenden Bungert ,  Jeremy Lyons ,  Jacob Frank ,  Spencer Rosar

IPC: F16D3/2237

Abstract: Drivetrains and constant velocity joints for recreational vehicles are disclosed. These joints comprise a housing, an aperture for connecting with an axle, and interior components for rotatably connecting the axle to the housing. Various retention mechanisms improve the retention of constant velocity joints, including hydraulic-based, disc-based, pin-based, spline-based, and spring ring-based mechanisms. Hydraulic-based systems utilize adjustable hydraulic pressure for maintaining engagement. Disc-based mechanisms employ a conical disc that provides additional frictional force to resist pull-out forces. Pin-based retention involves drive pads or pins and corresponding tracks or grooves in the shaft interfacing gear. Spline-based mechanisms include a toolless locking half shaft retention system with rotating, interrupted splines. Spring ring-based retention features multiple flexible retaining rings placed axially along the spline, providing improved shaft retention. These retention mechanisms enhance the performance and reliability of recreational vehicle drivetrains by securing the constant velocity joint connections.

公开(公告)号：US20220356850A1

公开(公告)日：2022-11-10

申请号：US17870028

申请日：2022-07-21

Applicant: Polaris Industries Inc.

Inventor： James H. Buchwitz ,  Lucas R. Salfer ,  Jay McKoskey ,  Jacob Hanson ,  Ron Danielson ,  Andreas H. Bilek ,  Dallas J. Blake ,  Ralph W. Lauzze, III ,  Eric L. Gausen

IPC: F02D19/02 ,  F02M59/20 ,  F02B75/02 ,  F02D31/00

Abstract: A method and system for operating a two-stroke engine includes a fuel system comprising a fuel pressure sensor, fuel temperature sensor and a fuel injector and a controller in communication with the fuel pressure sensor and fuel temperature sensor. The controller controls the fuel injector with a fuel pulsewidth determined by determining a beginning time of a window for measuring fuel pressure, determining an ending time of the window, measuring fuel pressure between the beginning time and the ending time, determining a fuel pulsewidth based on the fuel pressure and fuel temperature and injecting fuel into the two-stroke engine in response to a desired fuel mass.

公开(公告)号：US11815037B2

公开(公告)日：2023-11-14

申请号：US17870028

申请日：2022-07-21

Applicant: Polaris Industries Inc.

Inventor： James H. Buchwitz ,  Lucas R. Salfer ,  G. Jay McKoskey ,  Jacob Hanson ,  Ron Danielson ,  Andreas H. Bilek ,  Dallas J. Blake ,  Ralph W. Lauzze, III ,  Eric L. Gausen

IPC: F02D19/02 ,  F02M59/20 ,  F02B75/02 ,  F02D31/00

CPC classification number: F02D19/028 ,  F02B75/02 ,  F02D31/007 ,  F02M59/20 ,  F02B2075/025 ,  F02D2200/0625

Abstract: A method and system for operating a two-stroke engine includes a fuel system comprising a fuel pressure sensor, fuel temperature sensor and a fuel injector and a controller in communication with the fuel pressure sensor and fuel temperature sensor. The controller controls the fuel injector with a fuel pulsewidth determined by determining a beginning time of a window for measuring fuel pressure, determining an ending time of the window, measuring fuel pressure between the beginning time and the ending time, determining a fuel pulsewidth based on the fuel pressure and fuel temperature and injecting fuel into the two-stroke engine in response to a desired fuel mass.