公开(公告)号：WO2007139620A1

公开(公告)日：2007-12-06

申请号：PCT/US2007/008496

申请日：2007-04-04

Applicant: CATERPILLAR INC. ,  GIBSON, Dennis, H. ,  SOMMARS, Mark, F. ,  SUN, Jinhui ,  DAR, Mohammad, S.

Inventor： GIBSON, Dennis, H. ,  SOMMARS, Mark, F. ,  SUN, Jinhui ,  DAR, Mohammad, S.

IPC: F02M47/02 ,  F02M59/46 ,  F02M63/02 ,  F02M63/00

CPC classification number: F02M47/027 ,  F02M63/0026 ,  F02M63/0035 ,  F02M2200/706

Abstract: A control system for a fuel injector (32) is disclosed. The control system has a nozzle member (56) with at least one orifice (80), and a needle check valve (58). The needle check valve (58) is recipratingly disposed to open and close the at least one orifice (80). The control system also has a control chamber (106) located at the base end of the needle check valve (58), and a control valve (120) movable to selectively drain and fill the control chamber (106). The control system further has an injector body (52), a first piston (118) located within the injector body (52), and a second piston (116) located within the injector body (52). The first piston (118) is operatively connected to the control valve (120) to move the control valve (120). The second piston (116) is located a distance from the first piston (118) to form a coupling chamber (123). The control system additionally has a partial-ball check valve (119) associated with the coupling chamber to selectively replenish the coupling chamber (123).

Abstract translation: 公开了一种用于燃料喷射器（32）的控制系统。 控制系统具有具有至少一个孔口（80）和针止回阀（58）的喷嘴构件（56）。 针止回阀（58）被收集地设置成打开和关闭至少一个孔口（80）。 控制系统还具有位于针止回阀（58）的基端的控制室（106）和可移动以选择性地排出并填充控制室（106）的控制阀（120）。 控制系统还具有喷射器主体（52），位于喷射器主体（52）内的第一活塞（118）和位于喷射器主体（52）内的第二活塞（116）。 第一活塞（118）可操作地连接到控制阀（120）以移动控制阀（120）。 第二活塞（116）位于与第一活塞（118）一定距离处，以形成联接室（123）。 控制系统还具有与联接室相关联的部分球止回阀（119），以选择性地补充联接室（123）。

公开(公告)号：WO2007055791A1

公开(公告)日：2007-05-18

申请号：PCT/US2006/035061

申请日：2006-09-08

Applicant: CATERPILLAR INC. ,  GIBSON, Dennis, H. ,  SOMMARS, Mark, F. ,  SUN, Jinhui

Inventor： GIBSON, Dennis, H. ,  SOMMARS, Mark, F. ,  SUN, Jinhui

IPC: F02M45/12 ,  F02M63/02 ,  F02M3/00 ,  F02M47/02 ,  F02M45/02 ,  F02M45/08

CPC classification number: F02M63/0026 ,  F02M45/02 ,  F02M45/08 ,  F02M45/12 ,  F02M47/027 ,  F02M63/0061 ,  F02M63/0225

Abstract: A fuel injector (32) for a work machine (5) is disclosed. The fuel injector has nozzle member (56) having at least one orifice (84) and a needle valve element (58) having a tip end (86). The needle valve element is axially movable to selectively allow and block fuel flow through the at least one orifice with the tip end. The fuel injector also has at least one supply passageway (50) in communication with the tip end of the needle valve and a variable restrictive device (106) disposed within the at least one supply passageway.

Abstract translation: 公开了一种用于作业机（5）的燃料喷射器（32）。 燃料喷射器具有具有至少一个孔口（84）和具有尖端（86）的针阀元件（58）的喷嘴构件（56）。 针阀元件可轴向移动以选择性地允许和阻止通过具有尖端的至少一个孔口的燃料流动。 燃料喷射器还具有与针阀的前端连通的至少一个供应通道（50）和设置在至少一个供应通道内的可变限制装置（106）。