Title:
燃料噴射装置のための電磁弁の機能監視
Document Type and Number:
Japanese Patent JP6886010
Kind Code:
B2
Abstract:
The invention relates to a method (100) for operating a solenoid valve (1) for metering a fuel (2) in a fuel injection system (3). The solenoid valve can be actuated against a restoring force (12) by an electromagnet (11), wherein •the time curve l(t) of the current I flowing through the electromagnet (11) and/or the time curve U(t) of the voltage U applied to the electromagnet (11) are detected during at least one opening process of the solenoid valve (1). The opening time tON and the closing time tOFF of the solenoid valve (1) are evaluated (110) from the time curve I(t) and/or U(t), and the actual opening duration TT=tOFF−tON of the solenoid valve (1) is compared (140) with a reference value TR and/or •the mass flow dm/dt flowing through the solenoid valve (1) is detected (120) and compared (142) with a reference value MR during at least one opening process of the solenoid valve (1); and/or a leakage dm′/dt of fuel (2) through the solenoid valve (1) is detected (130) in the closed state of the solenoid valve (1). The invention also relates to a corresponding controller (5), a fuel injection system (3), and a computer program product.
Inventors:
Christina, Pietre
Gasseldorfer, Claudia
Gasseldorfer, Claudia
Application Number:
JP2019511732A
Publication Date:
June 16, 2021
Filing Date:
August 07, 2017
Export Citation:
Assignee:
ROBERT BOSCH GMBH
International Classes:
F02M69/00; F02M51/00; F02M61/04; F02M61/16; F02M67/14
Domestic Patent References:
| JP57137783A | ||||
| JP2010513768A | ||||
| JP2012132418A | ||||
| JP2009264237A | ||||
| JP60252225A | ||||
| JP4187845A |
Foreign References:
| GB2534201A | ||||
| EP2915985A1 | ||||
| US20090249888 | ||||
| WO2006104176A1 |
Attorney, Agent or Firm:
Oba Reiji
Hajime Takahashi
Go Yashima
Hajime Takahashi
Go Yashima