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US 2006/0130796 A1Published application
Method and apparatus for fuel injection systems
OwnerJohn Harrisoninventor
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OwnerJohn Harrisoninventor
Estimating the term…
An apparatus (100) for a gaseous fuel injection system includes a first chamber (15b) connectable with a source of gaseous fuel at a required inlet pressure, a second chamber (15c) connectable with an engine or other apparatus so as to supply gaseous fuel thereto and further connected with said first chamber (15b) through a controllable valving means. A flow control means (25) has an inlet connectable with the first chamber (15b) and an outlet connectable with an orifice (25b) for controlling the pressure at the outlet of the flow control means (25) to be no more than 53% of the inlet pressure. The apparatus (100) further includes means (20) for detecting the outlet pressure and controlling the valving means, such that controlling the said flow control means (25) to adjust the flow of gaseous fuel therethrough controls the outlet pressure, which in turn controls the controllable valving means and the pressure in the second chamber (15c), so as to thereby control the flow of gaseous fuel to said engine or other apparatus.
An apparatus for a gaseous fuel injection system including:
The apparatus of any one of the previous claims including a feedback controlled regulator stage between said inlet and said first chamber.
A method of controlling the flow of gaseous fuel in a fuel injection apparatus, said method including:
A feedback controlled regulator stage including a first chamber having an inlet connectable to a source of gas at a substantially constant pressure, the first chamber in fluid communication with a second chamber via a controllable valving means, an outlet from said second chamber, a second stage diaphragm controlling said controllable valving means and in fluid communication with said second chamber on a first side and a feedback chamber on an opposite second side, wherein a pressure of a gas in said feedback chamber is controlled by a feedback regulator means which varies said pressure in response to a pressure of the gas in said outlet, thereby maintaining said pressure in said outlet at a substantially constant pressure.
An apparatus for a gaseous fuel injection system substantially as herein described with reference to the accompanying figures.
A feedback controlled regulator stage substantially as herein described with reference to FIG. 1.
A method of controlling the flow of gaseous fuel in a fuel injection apparatus substantially as herein described.
Dependencies are inferred from the claim text.