Fuel supply system for injection carburetors
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United States of America Patent
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-
Jul 16, 1991
Grant Date -
N/A
app pub date -
Oct 23, 1989
filing date -
Oct 23, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fuel supply system for injection carburetors includes an orifice, a constant flow rate control device, and a fuel supply source and is provided with a first fuel channel circulating fuel of a predetermined flow rate, a second fuel channel branching off from the first fuel channel between the orifice and the constant flow rate control device for injecting the fuel into a suction tube of the carburetor, an air flow rate detecting device capable of detecting a flow rate of air flowing through the suction tube, and a fuel ejection control device capable of metering the flow rate of fuel to be ejected so that a pressure difference with atmospheric pressure which is detected by the air flow rate detecting device is balanced with a fuel pressure difference between the upstream side and the downstream side of the orifice. The fuel supply system is simple in structure and can hold an air-fuel ratio of a gas mixture with a high degree of accuracy to a desired constant value, over the entire operation region, through a single fuel control unit.
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