Carburetion arrangement for an internal combustion engine of a manually guided implement
AssigneeAndreas Stihl AG & Co. KG
InventorHans Nickel
Life of this patent
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Abstract
A carburetion arrangement for an internal combustion engine of a manually guided implement is provided. The arrangement includes a carburetor having an air channel, the cross-section of which is variable via a butterfly valve. An auxiliary carburetor having an auxiliary air channel is, in a flow conducting manner, connected in parallel to the air channel, whereby the auxiliary air channel opens into the air channel downstream of the butterfly valve. Disposed in the auxiliary air channel is a starting valve that includes a flow control device, wherein the starting valve alters the flow resistance of the flow control device as a function of the differential pressure that is present.
Claims12
A carburetion arrangement for an internal combustion engine of a manually guided implement, said arrangement comprising:
- a first carburetor that is provided with an air channel, a cross-section of which is variable via a butterfly valve;
- an auxiliary carburetor that is provided with an auxiliary air channel and that in a flow conducting manner is connected in parallel to said air channel of said first carburetor, wherein said auxiliary air channel opens into said air channel of said first carburetor downstream of said butterfly valve;
- and
- a starting valve that is disposed in said auxiliary air channel upstream of said auxiliary carburetor, and that includes a flow control device, wherein said starting valve alters a flow resistance of said flow control device as a function of a differential pressure that is present.
A carburetion arrangement for an internal combustion engine of a manually guided implement, said arrangement comprising:
- a first carburetor that is provided with an air channel, a cross-section of which is variable via a butterfly valve;
- an auxiliary carburetor that is provided with an auxiliary air channel and that in a flow conducting manner is connected in parallel to said air channel of said first carburetor, wherein said auxiliary air channel opens into said air channel of said first carburetor downstream of said butterfly valve;
- and
- a starting valve that is disposed in said auxiliary air channel and that includes a flow control device, wherein said starting valve alters a flow resistance of said flow control device as a function of a differential pressure that is present, and wherein said starting valve includes a valve plate that is provided with a restrictor opening and is pressed against a valve seat by means of a preload of a spring element.
Dependencies are inferred from the claim text.