Supplementary air assembly for an engine
AssigneePolaris Industries Inc.
InventorG. Jay McKoskey
Life of this patent
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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.
Claims36
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 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.
The engine of claim 3, wherein the first end of the supplementary air tube is positioned to direct air flow into the intake port and a second end is positioned adjacent to the throttle valve.
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.
Dependencies are inferred from the claim text.