公开(公告)号：US20250116239A1

公开(公告)日：2025-04-10

申请号：US18904113

申请日：2024-10-02

Applicant: Polaris Industries Inc.

Inventor： Dallas Blake ,  Darren J. Hedlund ,  Ryan Douglas Hayes

IPC: F02D41/24 ,  F02D9/08 ,  F02D13/02

Abstract: Recreational vehicle two-stroke engine control systems configured for location-based modification of an engine calibration may include a locator device, a throttle position sensor, and an engine speed sensor communicatively coupled to an engine control unit. The engine control unit controls a position of an exhaust valve based on a first calibration map and an input from the sensors. The engine control unit also determines, based on a location of the vehicle, a second calibration map. The engine control unit controls a position of an exhaust valve based on a second calibration map and an input from the sensors. Controlling the two-stroke engine to operate the exhaust valve at the second exhaust valve position may improve the engine run-quality, performance, efficiency, or the like.

公开(公告)号：US20240317207A1

公开(公告)日：2024-09-26

申请号：US18609359

申请日：2024-03-19

Applicant: Polaris Industries Inc.

Inventor： Brian Brandt ,  Cody Kofstad ,  Timothy R. Heffron ,  Eric Borud ,  Jeffrey Nels Johnson ,  Luke Guderjohn ,  Tyler D. Bentow ,  Dallas Blake ,  Jeremy Allen Hughes ,  Ryan Douglas Hayes ,  Cole Maxwell ,  James P. Palminteri ,  Marshall E. Hahn ,  Joseph D. Tharaldson

IPC: B60W10/18 ,  B60W50/14

CPC classification number: B60W10/18 ,  B60W50/14

Abstract: A snowmobile warning and control method for a snowmobile having an engine and a brake system, including: sensing a temperature of the brake system of the vehicle; determining that the temperature of the brake system is above a first predetermined temperature threshold; issuing a first brake-system temperature warning in response to the temperature of the brake system exceeding the first predetermined temperature threshold; determining that the temperature of the brake system is above a second predetermined temperature, the second predetermined temperature being greater than the first predetermined temperature; issuing a second brake-system temperature warning in response to the temperature of the brake system exceeding the second predetermined temperature threshold; and modifying an operation of the engine in response to the temperature of the brake system exceeding the second predetermined temperature threshold.