EP 3234328 A1 20171025 - METHOD AND APPARATUS FOR DIAGNOSING A FUEL SUPPLY SYSTEM
Title (en)
METHOD AND APPARATUS FOR DIAGNOSING A FUEL SUPPLY SYSTEM
Title (de)
VERFAHREN UND VORRICHTUNG ZUR DIAGNOSE EINES KRAFTSTOFFFÖRDERSYSTEMS
Title (fr)
PROCÉDÉ ET APPAREIL POUR DIAGNOSTIQUER UN SYSTEME D'ALIMENTATION EN CARBURANT
Publication
Application
Priority
- DE 102014226565 A 20141219
- EP 2015075538 W 20151103
Abstract (en)
[origin: WO2016096229A1] The invention relates to a method for testing an electrically activated actuator in a fuel delivery device (10) of an internal combustion engine, wherein the electrical actuator is a controllable valve (15) that is arranged on the inlet side of a high-pressure pump (16). The high-pressure pump (16) conveys fuel into a fuel store (17) having a pressure controller (20). The fuel store (17) is connected to at least one injector (23). The method comprises the following steps: 1) increasing the rotational speed of the high-pressure pump (16), 2) activating the controllable valve (15) until the pressure in the fuel store (17) has reached a first low pressure level, 3) changing the supply of current to the controllable valve (15) by a first specified value such that the controllable valve (15) is opened further and simultaneously maximizing an injection amount by means of the at least one injector (23) until the pressure in the fuel store (17) has reached a first threshold value, 4) activating the controllable valve (15) until the pressure in the fuel store (17) has reached the first low pressure level again, 5) determining a further quantity, which depends on the low pressure level and a maximum value of the pressure that was reached in the fuel store (17).
IPC 8 full level
F02D 35/00 (2006.01); F02D 41/22 (2006.01); F02D 41/26 (2006.01); F02D 41/38 (2006.01); F02M 63/02 (2006.01)
CPC (source: CN EP US)
F02D 41/221 (2013.01 - CN EP US); F02D 41/3809 (2013.01 - CN EP US); F02D 41/3845 (2013.01 - CN EP US); F02M 63/023 (2013.01 - CN EP US); F02M 65/003 (2013.01 - US); F02D 41/266 (2013.01 - CN EP US); F02D 2041/224 (2013.01 - CN EP US); F02D 2200/0602 (2013.01 - CN EP US)
Citation (search report)
See references of WO 2016096229A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 102014226565 A1 20160623; CN 107110101 A 20170829; CN 107110101 B 20191126; EP 3234328 A1 20171025; EP 3234328 B1 20200805; US 10400731 B2 20190903; US 2017350359 A1 20171207; WO 2016096229 A1 20160623
DOCDB simple family (application)
DE 102014226565 A 20141219; CN 201580069441 A 20151103; EP 15788063 A 20151103; EP 2015075538 W 20151103; US 201515536202 A 20151103