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.

公开(公告)号：US20250092837A1

公开(公告)日：2025-03-20

申请号：US18825014

申请日：2024-09-05

Applicant: Polaris Industries Inc.

Inventor： Dallas Blake

IPC: F02D41/00 ,  F02B75/02 ,  F02D9/10 ,  F02D41/22 ,  F02D41/38 ,  F02P5/15

Abstract: An electronic throttle-control system that includes: an electronic control unit (ECU) including a processor and a memory storing a throttle-control translation map; a throttle-input sensor in electrical communication with the ECU and configured to sense an input from an operator-actuated throttle device; and a 2-stroke internal-combustion engine. The 2-stroke internal-combustion engine may include: an electronic throttle-valve actuator in electrical connection with the ECU; a throttle body for controlling airflow to combustion chambers of the engine and defining first and second throttle bores; first and second throttle valves in the bores; and a throttle valve control shaft coupled to the throttle valves and the actuator, such that movement of the actuator causes the throttle valve control shaft to rotate and move the first and second throttle valves; and a throttle-position sensor in electrical communication with the ECU sensing an actual position of the first and second throttle valves.

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.