Global Patent Index - EP 3306061 A1

EP 3306061 A1 20180411 - CONTROL DEVICE AND CONTROL METHOD FOR FUEL PUMP

Title (en)

CONTROL DEVICE AND CONTROL METHOD FOR FUEL PUMP

Title (de)

STEUERUNGSVORRICHTUNG UND STEUERUNGSVERFAHREN FÜR KRAFTSTOFFPUMPE

Title (fr)

DISPOSITIF DE COMMANDE ET PROCÉDÉ DE COMMANDE POUR POMPE À CARBURANT

Publication

EP 3306061 A1 20180411 (EN)

Application

EP 16807277 A 20160523

Priority

  • JP 2015115902 A 20150608
  • JP 2016065195 W 20160523

Abstract (en)

A plunger (56) is caused to reciprocate by driving of a DC motor (42) to pump a pressurized fuel to an injector (16) and inject the fuel from the injector (16) in synchronization with a combustion cycle of an engine (1). An engine rotational period (Teg) and a motor rotational period (Tmt) are compared (S3), and when the periods are different, a duty ratio of a drive current to be supplied to the DC motor (42) is calculated from an operation area of the engine (1) by a normal method (S4). When the engine rotational period (Teg) and the motor rotational period (Tmt) are close to each other, the duty ratio of the drive current to be supplied to the DC motor (42) is corrected to be increased or decreased by a predetermined value (S6), and the DC motor (42) is driven and controlled based on the corrected duty ratio (S5). Thus, the motor rotational period (Tmt) is constantly set to be different from the engine rotational period (Teg) during the operation of the engine (1).

IPC 8 full level

F02D 41/04 (2006.01); F02M 37/08 (2006.01)

CPC (source: EP)

F02D 41/04 (2013.01); F02D 41/3082 (2013.01); F02M 37/043 (2013.01); F02M 37/08 (2013.01); F02D 41/34 (2013.01); F02D 2200/0404 (2013.01); F02D 2200/101 (2013.01); F02M 2037/087 (2013.01)

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)

EP 3306061 A1 20180411; EP 3306061 A4 20190116; CN 107614854 A 20180119; CN 107614854 B 20201117; JP 2017002770 A 20170105; JP 6545006 B2 20190717; WO 2016199570 A1 20161215

DOCDB simple family (application)

EP 16807277 A 20160523; CN 201680033355 A 20160523; JP 2015115902 A 20150608; JP 2016065195 W 20160523