Mechanical air fuel ratio regulating carburetor with fuel pressure regulation
OwnerAnthony John Williamsinventor
Life of this patent
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Abstract
A carburetor includes an air inlet with a mechanically adjustable air valve, a mechanically adjustable atomizer discharging in the air inlet, and a mechanical metering device connected with the air valve and the atomizer, maintaining a stoichiometric ratio between amounts of air and fuel. Additionally, the carburetor includes a fuel pressure regulating unit to regulate the fuel pressure of fuel injected in the air inlet, based on one or more dynamic engine load parameters under which a vacuum signal in the air inlet is obtained via a vacuum intake conduit discharging into the air inlet. 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.
Claims14
A carburetor, comprising:
- an air inlet with a mechanically adjustable air valve;
- a mechanically adjustable atomiser discharging in the air inlet;
- fuel pressure regulating means connected to a fuel valve for regulating a fuel pressure of fuel injected in the air inlet and connected to a vacuum sensing conduit discharging into the air inlet;
- and
- a mechanical metering device coupled with the air valve and the atomiser, the metering device including a multipartite spindle having a plurality of spindle parts which are mutually rotatable, wherein
- the air valve is pivotable around one spindle part, and
- the multipartite spindle includes a fuel conduit leading to the atomiser such that an amount of fuel running through the fuel conduit to the atomiser is controllable by rotating the one spindle part, in proportion with an amount of air allowed to pass, relative to an other spindle part for maintaining a stoichiometric ratio between amounts of air and fuel.
Dependencies are inferred from the claim text.