| 摘要 |
FIELD: engine manufacture; fuel gas pressure control in gas-fired internal-combustion engines. SUBSTANCE: upper part of high pressure controller 1 is made in the form of cylindrical bore 3 accommodating sensing member in the form of slide valve 4; external cylindrical surface has annular drilling 5 with radial ducts 6, and axial duct 7 is provided along axis which abuts against radial ducts 6. Slide valve has pressure spring 8 and adjusting screw 9 installed in cover 10. Inner space of bore 3 abuts against internal high-pressure space 11 and is provided with annular boss 12 to restrict travel of slide valve 4. Low-pressure controller 2 is made in the form of cylinder with internal partition 15 dividing it interior into two additional spaces, upper one 16 and lower space 17. Cylindrical drillings 17, 18 are made in partition 15 and in lower cylindrical space 17 of first-stage gear case 2 which accommodate sensing member in the form of elide valve 20 and piston 21, respectively. Slide valve 20 has rod 22 with limiter 23 and rod bar 24 with stop 25. Made on outer surface of slide valve 20 is annular drilling 26 with radial ducts 27 and axial duct 28 communicating with radial ducts 27. Piston 21 is made in the form of disk with axial hole that functions to install it onto rod 22 in bore 19 so that inner space 17 is additionally divided into two closed cylindrical spaces of variable volume: discharging device space 29 and atmospheric pressure space 30; piston 21 is provided with pressure spring 31, and high-pressure space 11 communicates through duct 44 with cylindrical drilling 18 in partition 15. EFFECT: improved reliability of pressure control. |
