Title:
【発明の名称】噴射弁
Document Type and Number:
Japanese Patent JP2001505977
Kind Code:
A
Abstract:
An injection valve for a fuel injection system, for multistage control of the effective cross section of an injection opening. A spring/stop system with a first compression spring for a control valve for a control chamber, whose pressure determined the position of the valve shaft of an injection valve member. When a valve opens, the spring/stop system allows its valve tappet a first axial stroke, which is limited by a primary stop on an axially movable adapter. The axial mobility of the adapter allows the valve tappet, counter to the compressive force of a first compression spring, an additional, second axial stroke, which is limited by an end stop structurally connected to the housing. The valve tappet is urged in the closing direction of the control valve by a second compression spring braced against the housing of the injection valve, and in the closed state of the control valve the spring force of the second compression spring is less than that of the first compression spring. Applicable to a control valve of a common rail injector.
Inventors:
Friedrich becking
Application Number:
JP51839499A
Publication Date:
May 08, 2001
Filing Date:
April 07, 1998
Export Citation:
Assignee:
ROBERT BOSCH GMBH
International Classes:
F02M47/00; F02M45/04; F02M45/08; F02M47/02; F02M51/00; F02M59/46; F02M63/00; (IPC1-7): F02M47/00; F02M45/08; F02M47/00; F02M51/00
Attorney, Agent or Firm:
Toshio Yano (3 outside)