Title:
圧電インジェクタの開放電圧を確定するための方法
Document Type and Number:
Japanese Patent JP2009530538
Kind Code:
A
Abstract:
A method for determining an opening voltage of an injector having a piezo actuator, in particular an injector of an internal combustion engine, in which an output voltage is applied at the piezo actuator in the closed state of the injector, and the voltage is lowered by energizing the piezo actuator so as to open the injector. The energy supply is interrupted at a holding voltage and the voltage change present at the piezo actuator is then measured over the time, the reaching of the opening voltage being inferred in the case of a voltage rise.
Inventors:
Thomas brightbach
Oliver Becker
Oliver Becker
Application Number:
JP2009500823A
Publication Date:
August 27, 2009
Filing Date:
March 14, 2007
Export Citation:
Assignee:
ROBERT BOSCH GMBH
International Classes:
F02M51/06; F02M51/00
Domestic Patent References:
| JP2005172002A | 2005-06-30 | |||
| JP2001214787A | 2001-08-10 | |||
| JPH10288119A | 1998-10-27 |
Foreign References:
| WO2001063121A1 | 2001-08-30 | |||
| DE19930309A1 | 2001-01-11 | |||
| DE10024662A1 | 2001-12-06 | |||
| EP1541840A2 | 2005-06-15 | |||
| WO2005119038A1 | 2005-12-15 |
Attorney, Agent or Firm:
Toshio Yano
Hiroshi Sugimoto
Hiroyasu Ninomiya
Einzel Felix-Reinhard
Hiroshi Sugimoto
Hiroyasu Ninomiya
Einzel Felix-Reinhard