Title:
METHOD FOR DETERMINING THE CLOSING TIME FOR A CLOSING BODY AND CIRCUIT ARRANGEMENT
Document Type and Number:
WIPO Patent Application WO/2005/108765
Kind Code:
A1
Abstract:
A method for determining the closure time for a valve, operated by a piezoelectric actuator, is disclosed. In order to record the closing time, the voltage at the piezoelectric actuator is recorded and the time is recorded at which the voltage has a maximum difference value from a comparison curve. The difference curve is generated between a start and an end point for a measured curve, comprising the voltage values applied to the piezoelectric actuator. A precise determination of the closing time can thus be carried out.
Inventors:
RISSLER CHRISTIAN (DE)
BEILHARZ JOERG (DE)
WIEHOFF HANS-JOERG (DE)
REBESCHIESS SVEN (DE)
BEILHARZ JOERG (DE)
WIEHOFF HANS-JOERG (DE)
REBESCHIESS SVEN (DE)
Application Number:
PCT/EP2005/003223
Publication Date:
November 17, 2005
Filing Date:
March 26, 2005
Export Citation:
Assignee:
VOLKSWAGEN MECHATRONIC GMBH (DE)
RISSLER CHRISTIAN (DE)
BEILHARZ JOERG (DE)
WIEHOFF HANS-JOERG (DE)
REBESCHIESS SVEN (DE)
RISSLER CHRISTIAN (DE)
BEILHARZ JOERG (DE)
WIEHOFF HANS-JOERG (DE)
REBESCHIESS SVEN (DE)
International Classes:
F02D41/20; H01L41/04; (IPC1-7): F02D41/20; H01L41/04
Domestic Patent References:
| WO2003104633A1 | 2003-12-18 | |||
| WO2003067073A1 | 2003-08-14 |
Foreign References:
| DE19958262A1 | 2001-07-05 | |||
| EP1138909A1 | 2001-10-04 | |||
| DE19930309C2 | 2001-12-06 |
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