公开(公告)号：WO2008016435A1

公开(公告)日：2008-02-07

申请号：PCT/US2007/014557

申请日：2007-06-22

Applicant: CATERPILLAR INC. ,  STOCKNER, Alan, R. ,  FERLEYKO, Mandi, R. ,  TOWER, Benjamin, R. ,  MOORE, Bryan, D. ,  PADARTHY, Koti, R. ,  O'SHEA, Fergal, M. ,  JOHNSON, Todd, A. ,  DI, James

Inventor： STOCKNER, Alan, R. ,  FERLEYKO, Mandi, R. ,  TOWER, Benjamin, R. ,  MOORE, Bryan, D. ,  PADARTHY, Koti, R. ,  O'SHEA, Fergal, M. ,  JOHNSON, Todd, A. ,  DI, James

IPC: F02M59/46 ,  F02M63/02 ,  G05D16/10 ,  F02M63/00

CPC classification number: F02M63/0225 ,  F02M63/005 ,  F02M63/0056 ,  F02M63/025 ,  F16K17/0406 ,  F16K17/046 ,  Y10T137/7738

Abstract: A pressure relief valve (26) is provided for a common rail fuel system (10). The pressure relief valve has a housing (40) with an inlet (34), an outlet (38), and a central bore (36) fluidly connecting the inlet and the outlet. The pressure relief valve also has a single valve seat (44) and a first valve element (28) movable to selectively block a flow of fluid through the single valve seat. The pressure relief valve further has a second valve element (30) disposed within the central bore of the housing and movable to selectively block a flow of fluid through the central bore.

Abstract translation: 为共轨燃料系统（10）设置减压阀（26）。 减压阀具有壳体（40），其具有入口（34），出口（38）和流体连接入口和出口的中心孔（36）。 减压阀还具有单个阀座（44）和第一阀元件（28），该第一阀元件可移动以选择性地阻挡通过单个阀座的流体流动。 减压阀还具有设置在壳体的中心孔内的第二阀元件（30），并可移动以选择性地阻挡通过中心孔的流体流动。