Abstract: A vehicle including a frame; an engine supported by the frame, the engine having at least one engine air inlet; a turbocharger fluidly connected to the engine, the turbocharger including a compressor fluidly connected to the at least one engine air inlet, the compressor having a compressor inlet and a compressor outlet, an intake air flow path of the vehicle being defined from air entering the vehicle, passing through the compressor inlet into the compressor, passing out of the compressor through the compressor outlet, and flowing into the at least one engine air inlet; and a coolant container assembly including a coolant container fluidly connected to the intake air flow path at at least one connection point; and the coolant container assembly being arranged to selectively provide an amount of cooling liquid to flow from the coolant container into the intake air flow path via the connection point.

Abstract: A method for managing temperature of a piston of an engine of a vehicle, the method being executed by a controller of the vehicle. The method includes determining at least one of a piston temperature of the piston and an engine speed (RPM) of the engine; and in response to the at least one of the piston temperature being above a piston temperature threshold, and the engine speed being above an engine speed threshold, modifying, by the controller, at least one engine operation value of the engine, the at least one engine operation value being modified such that increasing of the piston temperature is limited and/or causing coolant fluid to flow from a coolant container to an air intake flow path fluidly connected to the piston.

Abstract: 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.

Abstract: 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.

Abstract: A vehicle including an engine; a turbocharger, an intake air flow path of the vehicle defined from air entering the vehicle, passing through the compressor, and flowing into the engine air inlet; a coolant container assembly; a temperature sensor configured for determining a temperature in the intake air flow path; and a controller configured to selectively cause cooling liquid to flow from the coolant container into the intake air flow path. A method for managing engine air intake temperature or piston temperature of a turbocharged vehicle including: sensing a temperature of fluid within the air intake flow path, determining an estimated piston temperature; and in response to the estimated piston temperature and/or the temperature of the fluid being above threshold temperatures, causing an amount of cooling liquid to flow from a coolant container to the air intake flow path.

Abstract: An engine assembly for a vehicle and method for determining piston component temperature. The assembly includes an engine defining at least one cylinder, the engine including at least one piston disposed in the at least one cylinder, the at least one piston and the at least one cylinder together defining at least in part at least one variable volume combustion chamber; and at least one temperature sensor connected to the engine, the at least one temperature sensor being arranged to measure a temperature of fluid within the at least one combustion chamber.

Abstract: A vehicle including an engine; a turbocharger, an intake air flow path of the vehicle defined from air entering the vehicle, passing through the compressor, and flowing into the engine air inlet; a coolant container assembly; a temperature sensor configured for determining a temperature in the intake air flow path; and a controller configured to selectively cause cooling liquid to flow from the coolant container into the intake air flow path. A method for managing engine air intake temperature or piston temperature of a turbocharged vehicle including: sensing a temperature of fluid within the air intake flow path, determining an estimated piston temperature; and in response to the estimated piston temperature and/or the temperature of the fluid being above threshold temperatures, causing an amount of cooling liquid to flow from a coolant container to the air intake flow path.

Abstract: An exhaust valve assembly has a valve actuator, a first valve part (FVP) operatively connected to the actuator, a second valve part (SVP), and at least one auxiliary valve operatively connected to the second valve part. When the actuator is in a first position, the FVP is in a fourth position, the SVP is in a seventh position and the at least one auxiliary valve is in a ninth position. When the actuator is in a second position, the FVP is in a fifth position, the SVP is in the seventh position and the at least one auxiliary valve is in the ninth position. When the actuator is in a third position, the FVP is in a sixth position, the SVP is in an eighth position and the at least one auxiliary valve is in a tenth position. The second position is intermediate the first and third positions.

Abstract: An exhaust valve assembly has a valve actuator, a first valve part (FVP) operatively connected to the actuator, a second valve part (SVP), and at least one auxiliary valve operatively connected to the second valve part. When the actuator is in a first position, the FVP is in a fourth position, the SVP is in a seventh position and the at least one auxiliary valve is in a ninth position. When the actuator is in a second position, the FVP is in a fifth position, the SVP is in the seventh position and the at least one auxiliary valve is in the ninth position. When the actuator is in a third position, the FVP is in a sixth position, the SVP is in an eighth position and the at least one auxiliary valve is in a tenth position. The second position is intermediate the first and third positions.

Abstract: A sealed bearing assembly for supporting a rotating shaft and, in particular, a crankshaft of a two-stroke engine includes an inner race, an outer race and a plurality of roller elements disposed between the inner and outer races. A grease seal is disposed between the inner and outer races and spaced axially outward from the roller elements along an axis of the bearing assembly. The grease seal includes a rigid support structure and a flexible sealing member attached to the rigid support structure. The flexible sealing member includes at least one sealing lip, which contacts a surface of the inner race to provide a sealing engagement between the grease seal and the inner race, thereby retaining lubrication in an interior of the bearing from escaping at least to an interior of a crankcase of the engine and sealing at least the interior of the bearing against crankcase pressure variations in the engine.

Abstract: An internal combustion, two stroke engine is disclosed. The engine includes a crankcase with a cylinder adapted to house a piston. At least one transfer duct communicates the crankcase to the cylinder. At least one fuel injector is disposed through a wall of the transfer duct. The fuel injector is positioned to inject fuel tangentially to the cylinder.

Abstract: A sealed bearing assembly for supporting a rotating shaft and, in particular, a crankshaft of a two-stroke engine includes an inner race, an outer race and a plurality of roller elements disposed between the inner and outer races. A grease seal is disposed between the inner and outer races and spaced axially outward from the roller elements along an axis of the bearing assembly. The grease seal includes a rigid support structure and a flexible sealing member attached to the rigid support structure. The flexible sealing member includes at least one sealing lip, which contacts a surface of the inner race to provide a sealing engagement between the grease seal and the inner race, thereby retaining lubrication in an interior of the bearing from escaping at least to an interior of a crankcase of the engine and sealing at least the interior of the bearing against crankcase pressure variations in the engine.

Abstract: An internal combustion, two stroke engine is disclosed. The engine includes a crankcase with a cylinder adapted to house a piston. At least one transfer duct communicates the crankcase to the cylinder. At least one fuel injector is disposed through a wall of the transfer duct. The fuel injector is positioned to inject fuel tangentially to the cylinder.