Title:
PIEZO SENSOR SYSTEM FOR DETECTING THE NEEDLE LIFT OF A NOZZLE OF A COMMON RAIL INJECTOR
Document Type and Number:
WIPO Patent Application WO2004007951
Kind Code:
A3
Abstract:
The invention relates to a nozzle needle (4) of a nozzle (1), which is located inside an injector housing and is braced against a housing shoulder (5) by means of a spring (2). A piezo element (7), which determines the nozzle needle path during the opening or closing of the nozzle opening (3), is situated between the spring (2) and the housing shoulder (5). For this purpose, the piezo element (7) has two electric connections (8.1, 8.2) in the vicinity of its corresponding front faces (7.1, 7.2).
Inventors:
FEKETE NICHOLAS (DE)
FLAEMIG-VETTER TOBIAS (DE)
HERBSTRITT DIRK (DE)
FLAEMIG-VETTER TOBIAS (DE)
HERBSTRITT DIRK (DE)
Application Number:
PCT/EP2003/009693
Publication Date:
March 04, 2004
Filing Date:
May 06, 2003
Export Citation:
Assignee:
DAIMLER CHRYSLER AG (DE)
FEKETE NICHOLAS (DE)
FLAEMIG-VETTER TOBIAS (DE)
HERBSTRITT DIRK (DE)
FEKETE NICHOLAS (DE)
FLAEMIG-VETTER TOBIAS (DE)
HERBSTRITT DIRK (DE)
International Classes:
F02M65/00; (IPC1-7): F02M65/00; F02M61/16
Foreign References:
| EP0703363A2 | 1996-03-27 | |||
| GB1253587A | 1971-11-17 | |||
| US4662564A | 1987-05-05 | |||
| US4483480A | 1984-11-20 | |||
| US4669440A | 1987-06-02 | |||
| US4838080A | 1989-06-13 | |||
| US6253736B1 | 2001-07-03 |
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