| 摘要 |
The present invention provides a supplementary pressure regulator that can b e used with conventional single or multi-stage pressure regulators. It may als o conveniently be used with a novel two-stage balanced pressure regulator to form a three-stage vacuum demand pressure regulation system which may be use d to regulate the pressure of compressed gases used as fuel in engines, such a s natural gas used in natural gas powered vehicles. The pressure regulator of the present invention is a robust, compact, high flow, low droop, low pressu re drop, low set-point drift and low creep regulator which is suitable for both OEM and after market use. It is particularly useful in mono-, bi-, and dual fuel engine applications.
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