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AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorReinhard Mader
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A carburetion arrangement and method of carburetion for a multicylinder internal combustion engine wherein at least one carburetor acts as a main mixture forming device with the main mixture being guided through individual intake lines which connect the carburetor to intake valves of the engine. Further mixture components are guided through separate air and fuel lines which terminate in the individual intake lines with the separate air and fuel lines being combined immediately before the intake lines. The intake air is supplied to the further mixture components primarily through the individual intake lines with a volume controlled portion of the intake air of this mixture component, reduceable to zero, being guided through the separate air lines, as correction air for the fuel to the mixture components flowing through the separate fuel lines. The correction air flowing through all the lines is controlled volumewise by a common control device which is disposed upstream of an air distributor for the air lines. The fuel is fed to the separate fuel lines commonly and at zero pressure from the carburetor as well as to individual inlets in the respective intake lines by way of a fuel throttle nozzle located in a vicinity of the individual inlets.
A method of carburetion for a multicylinder internal combustion engine, the method comprising the steps of:
A carburetion arrangement for a multicylinder internal combustion engine, the arrangement comprising at least one carburetor for forming a main fuel-air mixture, individual intake channel means for connecting the at least one carburetor to intake valves of the internal combustion engine, and separate air line means and fuel line means for respectively delivering air and fuel to the intake channel means, characterized in that control means, controlled as a function of volume, are provided for commonly distributing intake air for fuel-air mixture components formed by the separate air line means and fuel line means to the individual intake channel means, at least one additional control means is provided for controlling a small portion of the intake air, said additional control means is operable to control the intake air to the separate air line means as a fuel correction and as a function of volume with a volume of the fuel correction air being reduceable to zero, said additional control means is disposed upstream of an air distributor means for distributing air to the separate air lines means, and in that fuel distributor means are provided for distributing fuel to the separate fuel line means, said fuel distributor means are connected at zero pressure to the at least one carburetor means.
Dependencies are inferred from the claim text.