CPC F02C 9/263 (2013.01) [F02C 3/00 (2013.01); F05D 2220/32 (2013.01); F05D 2240/35 (2013.01)] | 13 Claims |
1. A fluid flow system comprising:
a main valve having a spool, a first chamber, and a second chamber, wherein a pressure difference between the first chamber and the second chamber is configured to move the spool to control a fluid flow;
an electromechanical interface device (EMID) in fluid communication with at least one of the first and second chambers of the main valve, the EMID configured to meter fluid from a first source and a second source to at least one of the first chamber and the second chamber, wherein the first source has a different pressure from the second source; and
wherein the first chamber is in communication with the EMID via a first fluid line and the second chamber is in communication with the EMID via a second fluid line, with a first fixed orifice on the first fluid line and a second fixed orifice on the second fluid line, with both of said first and second fixed orifices being between the main valve and the EMID; wherein the first fluid line is structurally separate from the second fluid line.
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