BRP-ROTAX GMBH & CO. KG

A command for a start procedure initiates a diagnostic sequence for an electric system ( 1 ) including a power stage ( 20 ) of a vehicle. A first switched current-limiting path ( 150 ) between a first polarity ( 12 ) of a battery ( 10 ) and a first polarity of the power stage ( 20 ) is closed. If an output voltage applied on the power stage is less than a low voltage threshold ( 320 ), the first switched current-limiting path ( 150 ) is opened and a second switched current-limiting path ( 170 ) between a second polarity ( 14 ) of the battery ( 10 ) and a second polarity of the power stage ( 20 ) is closed. If the output voltage is still less than the low voltage threshold ( 340 ), the first switched current-limiting path ( 150 ) is closed again ( 350 ). If the output voltage increases to meet or exceed an operating voltage threshold, a first switched non-current-limiting path ( 125 ) parallel to the first current-limiting path ( 150 ) and a second switched non-current-limiting path ( 130 ) parallel to the second current-limiting path ( 170 ) are both closed.

Method of generating vibrations in an electric vehicle and electric vehicle thereof. The method being executed by a controller of the electric vehicle. The method includes providing a signal for operating the electric motor and selecting one of a first driver-contacting component or a second driver-contacting component to be vibrated. The method continues with adjusting the signal for causing vibration of the electric motor at a desired frequency. The desired frequency is at or near a resonance frequency of one of the first or the second driver-contacting components. The method continues with applying the adjusted signal to the electric motor.

A method for managing temperature of a piston of an engine of a vehicle, the method comprises determining, by a throttle position sensor connected to a controller, a throttle position of a throttle valve of the engine, determining, by an engine speed sensor connected to the controller, an engine speed (RPM) of the engine, and determining, by the controller, an estimated piston temperature based on at least the throttle position and the engine speed.

A transmission for a vehicle and a method of assembly. The transmission includes a housing body having a body connection surface, a housing cover having a cover connection surface, a friction-enhancing insert, and a magnetic threaded fastener fastened to the body such that a portion is disposed in a volume defined between the body and the cover. The cover is connected to the body such that the body connection surface faces the cover connection surface with the insert compressed therebetween. The insert has a compressible body with a first surface contacting the cover connection surface and a second surface contacting the body connection surface. Particles are disposed on the first surface. The particles being harder than a material of the body and the cover. When the insert is compressed at least some of the particles penetrate the compressible body, the body connection surface, and the cover connection surface.

An engine assembly for a vehicle incorporating an internal combustion engine including an exhaust manifold to discharge exhaust gases, a turbocharger coupled to the exhaust manifold via a coupling conduit to receive the discharged exhaust gases to drive the turbocharger to produce compressed air delivered to the engine, and a heat shield. The heat shield configured with a first layer including an upper section to cover the engine exhaust manifold and a lower section to cover a portion of the turbocharger, the heat shield first layer upper and lower sections configured to conform to general shapes of the engine exhaust manifold and turbocharger surfaces, respectively, and a second layer configured with a curved shape profile to cover the heat shield first layer upper and lower sections in which the heat shield second layer is spaced apart from the first layer upper and lower sections by an air gap.

A transmission for a vehicle ( 20 ) includes: an input shaft ( 122 ) for connection to an internal combustion engine ( 52 ) of the vehicle ( 20 ); a gear ( 605 ) shaft ( 122, 199, 400 A, 400 B) selectively operatively connected to the input shaft ( 122 ); a clutch selectively actuatable to transmit motion between the input shaft ( 122 ) and the gear ( 605 ) shaft ( 122, 199, 400 A, 400 B) for selectively operating the transmission in one of a plurality of transmission gears ( 600 ); an output shaft ( 740 ) operatively connected to the gear ( 605 ) shaft ( 122, 199, 400 A, 400 B) at least in part by the transmission gears ( 600 ); and a transmission housing ( 102 ) at least partly enclosing the input shaft ( 122 ), the transmission gears ( 600 ), the clutch and the output shaft ( 740 ). An internal dividing wall ( 506, 510 ) defines first and second chambers ( 350 A, 502 ), the internal dividing wall ( 506, 510 ) being configured to limit flow of transmission fluid between the first and second chambers ( 350 A, 502 ). The input shaft ( 122 ) and the clutch are disposed within the first chamber ( 350 A, 350 B, 508 ). The transmission gears ( 600 ) and the output shaft ( 740 ) are disposed within the second chamber ( 350 A, 350 B, 508 ).

A driven pulley for a continuously variable transmission has a fixed sheave; a movable sheave; a spring biasing the movable sheave axially toward the fixed sheave; and at least one roller assembly connected to one of the sheaves. Another one of the sheaves has at least one ramp configured for abutting the at least one roller assembly. Each roller assembly has: a pin and a roller. The pin has: a first pin portion received in an aperture defined in the one of the sheaves; a second pin portion extending radially from the one of the sheaves; and an annular flange disposed radially between the first and second pin portions. The flange abuts a surface of the one of the sheaves surrounding the aperture. The roller is disposed on the second pin portion. The annular width of the flange is at least half of the annular width of the roller.

A damping assembly, which is for a rewind starter of an engine, includes a cover housing, at least one damper, a cover mount and a retaining member. The cover housing is configured to connect to a housing of the engine, and includes a housing base defining an aperture, and a housing wall extending axially from the housing base. The housing wall at least partially surrounds the housing base. The at least one damper is connected to the housing base, and extends at least partially around the aperture. The cover mount is connected to the at least one damper, at least partially extends through the aperture, at least partially covers the aperture, and has a spindle configured to operatively connect to part of the rewind starter. The retaining member retains the cover housing, the at least one damper and the cover mount together.

A gearing assembly for a vehicle drivetrain. The assembly includes a first shaft rotating about a first shaft axis; a second shaft with a second shaft axis parallel to the first shaft axis; a first freewheel clutch gear mounted to the first shaft; a second gear mounted to the first shaft; a third freewheel clutch gear mounted to the second shaft and engaged with the second gear; and a fourth gear mounted to the second shaft and engaged with the first gear. When the first shaft rotational speed is greater than the second shaft rotational speed, the first shaft drives the second shaft via the second and third gear, the first gear being overrun; and when the second shaft rotational speed is greater than the first shaft rotational speed, the second shaft drives the first shaft via the fourth and first gear, the third gear being overrun.

An output assembly for driving a drive pulley of a continuously variable transmission and for supplying hydraulic fluid thereto is disclosed. The output assembly has a shaft configured to connect to a motor output shaft and to the drive pulley; a cover surrounding a portion of the shaft; a bearing rotationally supporting the shaft in the cover; and a sleeve and two shaft seals disposed between the cover and the shaft. In operation: hydraulic fluid flows from a cover inlet passage to a first high pressure chamber defined between the cover and the sleeve, through a sleeve passage from the first high pressure chamber to a second high pressure chamber defined between the sleeve and the shaft, and from the second high pressure chamber to the drive pulley via a shaft passage and to a cover outlet passage via a low pressure chamber defined between the cover and the shaft.