Supplementary air assembly for an engine
AssigneePolaris Industries Inc.
InventorG. Jay McKoskey
Life of this patent
Estimating the term…
Abstract
An internal combustion engine includes a crankcase including a crankshaft and at least one cylinder coupled to the crankcase. The at least one cylinder has an intake port and defines an internal combustion chamber. The engine further includes a throttle body assembly with a throttle valve coupled to the intake port of the at least one cylinder and a throttle plate. Additionally, the engine includes a supplementary air inlet fluidly coupled to the intake port and spaced apart from the throttle valve. The supplementary air inlet is configured to receive a flow of air from a location downstream of the throttle plate when the throttle plate is in a fully closed position and the flow of air is directed into the combustion chamber through the intake port for combustion therein.
Claims31
An internal combustion engine comprising:
- a crankcase including a crankshaft;
- at least one cylinder coupled to the crankcase and defining an internal combustion chamber;
- an air intake system comprising an air inlet and an intake port of the at least one cylinder;
- a throttle body assembly having a throttle valve coupled to the air inlet and including a throttle plate;
- a supplementary air inlet fluidly coupled to the intake port, and configured to receive a flow of air from the air intake system from a location downstream of the throttle plate of the at least one cylinder, and the flow of air is directed into the intake port of the at least one cylinder for combustion within the combustion chamber and the flow of air is controlled and modulated by the position of the throttle plate;
- wherein the throttle body having a plurality of apertures extending through a wall of the throttle body, wherein at least a portion of the plurality of apertures are positioned downstream from the throttle plate when the throttle plate is in the fully closed position, and wherein a portion of the apertures are configured to receive air when the throttle plate is in a first position and each of the apertures receives air when the throttle plate is in a second position.
An internal combustion engine, comprising:
- a crankcase including a crankshaft;
- at least one cylinder coupled to the crankcase and having an intake port and the at least one cylinder defining an internal combustion chamber;
- a throttle body assembly having a throttle valve coupled to an air inlet of the at least one cylinder and including a throttle plate;
- a supplementary air inlet fluidly coupled to the intake port, wherein the supplementary air inlet is configured to receive a flow of air from a location downstream of the throttle plate of the at least one cylinder, and the flow of air is directed into the intake port of the at least one cylinder for combustion within the combustion chambers
- wherein the throttle body includes a plurality of apertures extending through a wall of the throttle body and open into the air inlet adjacent to the throttle plate, and wherein at least a portion of the plurality of apertures are positioned downstream from the throttle plate when the throttle plate is in the fully closed position, and wherein a portion of the apertures are configured to receive air when the throttle plate is in a first position and each of the apertures receives air when the throttle plate is in a second position.
An internal combustion engine, comprising:
- a crankcase including a crankshaft
- at least one cylinder coupled to the crankcase and having an intake port and the at least one cylinder defining an internal combustion chamber;
- a throttle body assembly having a throttle valve coupled to an air inlet of the at least one cylinder and including a throttle plate;
- a supplementary air inlet fluidly coupled to the intake port, wherein the supplementary air inlet is configured to receive a flow of air from a location downstream of the throttle plate of the at least one cylinder, and the flow of air is directed into the intake port of the at least one cylinder for combustion within the combustion chamber;
- wherein the throttle body includes a plurality of apertures extending through a wall of the throttle body and open into the air inlet adjacent to the throttle plate, and
- wherein at least a portion of the plurality of apertures are positioned upstream from the throttle plate when the throttle plate is in the fully closed position.
Dependencies are inferred from the claim text.