公开(公告)号：US20190003350A1

公开(公告)日：2019-01-03

申请号：US16115842

申请日：2018-08-29

Applicant: BRP-ROTAX GMBH & CO. KG

Inventor： Andreas MATHEIS ,  Guenther ROLAND

IPC: F01L3/20 ,  F02B75/02 ,  F01L1/38 ,  F02D13/02 ,  F02B77/04 ,  F01L1/02 ,  F02B33/04 ,  F02B25/20 ,  F01L5/20

CPC classification number: F01L3/20 ,  F01L1/02 ,  F01L1/38 ,  F01L3/205 ,  F01L5/20 ,  F02B25/20 ,  F02B33/04 ,  F02B75/02 ,  F02B77/04 ,  F02B2075/025 ,  F02D13/0284 ,  F02D2013/0288 ,  Y02T10/18

Abstract: A method for cleaning an exhaust valve of a two-stroke internal combustion engine is provided. The method comprises: requesting an exhaust valve cleaning cycle if at least one of a first condition or a second condition is satisfied; initiating the exhaust valve cleaning cycle if at least one of a third condition or a fourth condition is satisfied; and aborting the exhaust valve cleaning cycle if at least one of the at least one of the third or fourth conditions is no longer satisfied. The first condition is a time elapsed since a previous cleaning cycle has been completed being greater than a predetermined time. The second condition is a rate of opening of the exhaust valve being less than predetermined rate. The third condition is a throttle valve being closed. The fourth condition is an engine speed being less than a predetermined engine speed.

公开(公告)号：US20180195607A1

公开(公告)日：2018-07-12

申请号：US15913006

申请日：2018-03-06

Applicant: BRP-ROTAX GMBH & CO. KG

Inventor： Guenther ROLAND ,  Christian STIEBINGER

IPC: F16H61/662 ,  F16H9/14 ,  B62M9/08 ,  B62M27/02 ,  B62J99/00

Abstract: A method of operating a vehicle having an engine, a throttle valve and a throttle operator. A continuously variable transmission is operatively connected to the engine and has a driving pulley, a driven pulley, and a belt operatively connecting therebetween. At least one ground engaging member is operatively connected to the driven pulley and includes at least one of a wheel and a track. A piston is operatively connected to the driving pulley for applying a piston force to the driving pulley when actuated and thereby changing an effective diameter of the driving pulley. A control unit controls actuation of the piston and the piston force. The method includes determining an engine speed, and controlling the piston force based on the engine speed.

公开(公告)号：US20170218798A1

公开(公告)日：2017-08-03

申请号：US15419175

申请日：2017-01-30

Applicant: BRP-ROTAX GMBH & CO. KG

Inventor： Andreas MATHEIS ,  Markus DOPPELBAUER ,  Martin SCHALLAUER ,  Christian BERGER ,  Guenther ROLAND

IPC: F01L3/20 ,  F02B75/02 ,  F02B77/04 ,  F01L1/02

CPC classification number: F01L3/20 ,  F01L1/02 ,  F01L1/38 ,  F01L3/205 ,  F01L5/20 ,  F02B25/20 ,  F02B33/04 ,  F02B75/02 ,  F02B77/04 ,  F02B2075/025 ,  F02D13/0284 ,  F02D2013/0288 ,  Y02T10/18

Abstract: An exhaust valve assembly for a two-stroke internal combustion engine has a valve actuator, and a two-part valve having a primary and secondary valves defining first and second decompression passages respectively. The primary valve is operatively connected to the valve actuator. The primary valve is in first, second and third primary valve positions when the valve actuator is in first, second and third actuator positions respectively. The secondary valve is in a first secondary valve position when the valve actuator is in the first or the second actuator position and in a second secondary valve position when the valve actuator is in the third actuator position. The first and second valve decompression passages fluidly communicate with each other when the valve actuator is in the second actuator position, and are fluidly separate from each other when the valve actuator is the first or the third actuator position.

公开(公告)号：US20220153378A1

公开(公告)日：2022-05-19

申请号：US17592897

申请日：2022-02-04

Applicant: BRP-ROTAX GMBH & CO. KG

Inventor： Guenther ROLAND ,  Christian STIEBINGER

IPC: B62J45/412 ,  F16H59/62 ,  F16H59/36 ,  F16H59/24 ,  B62M9/08 ,  B62M27/02 ,  F16H9/14 ,  F16H61/662

Abstract: A method of operating a vehicle is provided. The vehicle includes: an engine; a throttle operator moveable by a driver; a throttle valve regulating airflow to the engine; a continuously variable transmission (CVT) operatively connected to the engine; at least one ground engaging member including at least one of: a wheel and a track; a piston operatively connected to a driving pulley of the CVT for applying a piston force to the driving pulley when actuated and thereby changing an effective diameter of the driving pulley; and a control unit for controlling actuation of the piston and the piston force. The method includes: determining a driven pulley speed of a driven pulley of the CVT; detecting an uphill stand condition indicative of the vehicle being stopped on an uphill; responsive to the detection of the uphill stand condition, controlling the piston force based on the driven pulley speed.

公开(公告)号：US20200292073A1

公开(公告)日：2020-09-17

申请号：US16890072

申请日：2020-06-02

Applicant: BRP-ROTAX GMBH & CO. KG

Inventor： Guenther ROLAND ,  Christian STIEBINGER

IPC: F16H61/662 ,  F16H59/62 ,  F16H59/36 ,  F16H59/24 ,  B62M9/08 ,  B62M27/02 ,  F16H9/14

Abstract: A method of operating a vehicle having an engine, a throttle valve and a throttle operator. A continuously variable transmission operatively connected to the engine has a driving pulley, a driven pulley, and a belt operatively connecting the driving and driven pulleys. A ground engaging member is operatively connected to the driven pulley. A piston is operatively connected to the driving pulley for applying a piston force thereto and thereby changing an effective diameter of the driving pulley. A control unit controls actuation of the piston and the piston force. The method includes detecting a stall condition indicative of the vehicle being stalled, and, responsive to the detection, setting the piston force to be zero.

公开(公告)号：US20160356379A1

公开(公告)日：2016-12-08

申请号：US15114043

申请日：2015-02-02

Applicant: BRP-ROTAX GMBH & CO. KG

Inventor： Guenther ROLAND ,  Christian STIEBINGER

IPC: F16H61/662 ,  F16H9/14 ,  B62M9/10

CPC classification number: F16H61/66272 ,  B62J2099/002 ,  B62K2207/04 ,  B62M9/08 ,  B62M27/02 ,  F16H9/14 ,  F16H59/62 ,  F16H61/662 ,  F16H2061/66209 ,  Y10T477/6237 ,  Y10T477/624 ,  Y10T477/65

Abstract: A method of operating a vehicle at different altitudes. The vehicle has an engine, a throttle valve and a throttle operator. A continuously variable transmission has a driving pulley connected to the engine, a driven pulley, and a belt operatively connecting therebetween. A ground engaging member is operatively connected to the driven pulley. A piston is connected to the driving pulley. A control unit controls actuation of the piston and the piston force. The method includes determining an altitude and/or an atmospheric pressure, a driven pulley speed, and at least one of the throttle operator position and the throttle valve position. The piston is selectively actuated based on the altitude and/or the atmospheric pressure. The piston force is controlled based on the driven pulley speed, and at least one of: the throttle operator position and the throttle valve position. Vehicles and other methods of operation thereof are also disclosed.

Abstract translation: 在不同高度操作车辆的方法。 车辆具有发动机，节气门和节气门操作器。 无级变速器具有连接到发动机，从动带轮和与其可操作地连接的带的驱动带轮。 地面接合构件可操作地连接到从动皮带轮。 活塞连接到驱动滑轮。 控制单元控制活塞的致动和活塞的力。 该方法包括确定高度和/或大气压力，从动皮带轮速度以及节气门操作者位置和节气门位置中的至少一个。 基于高度和/或大气压力选择性地致动活塞。 基于从动皮带轮速度来控制活塞力，并且至少一个：节气门操作者位置和节气门位置。 还公开了车辆及其操作方法。