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US 2008/0116594 A1Published application
Mechanical Air Fuel Ratio Regulating Carburettor with Fuel Pressure Regulation
OwnerAnthony John Williamsinventor
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OwnerAnthony John Williamsinventor
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Described is a carburetor (8), comprising an air (2) inlet with a mechanically adjustable air valve (3), an into the air inlet coming mechanically adjustable atomiser, and a mechanical metering device connected with the air valve and the atomiser, maintaining a stoichiometric ratio between amounts of air and fuel. Furthermore the carburetor has fuel pressure regulating means/devices (13) that are equipped to influence the fuel pressure, in dependence of one or more dynamic engine load parameters, under which the vacuum signal in the air inlet, which is obtained via a vacuum intake conduit (12) coming into the air inlet (2). By regulating the fuel pressure also in dependence of the measured vacuum signal, the emission of unburned fuel is reduced under certain dynamic conditions of the combustion engine.
A carburetor comprising an air inlet with a mechanically adjustable air valve, a mechanically adjustable atomiser discharging in the air inlet, and a mechanical metering device coupled with the air valve and the atomiser, which device maintains a stoichiometric ratio between amounts air and fuel.
Carburetor according to one of the previous claims, characterised in that the metering device comprises of a multipartite spindle whereby the air valve around one spindle part is made turnable, and that the multipartite spindle is equipped with a fuel conduit leading to the atomiser, and/or with a vacuum sensing conduit leading to the air inlet, and has spindle parts that between themselves are turnable.
A method whereby fuel is injected into an air inlet, characterised in that the fuel pressure of the injected fuel, is being regulated, and pressure in the air inlet is being measured, and taken as a measure, to regulate the fuel pressure.
Dependencies are inferred from the claim text.