公开(公告)号：EP2149695A3

公开(公告)日：2010-10-20

申请号：EP09175047.1

申请日：2003-09-23

Applicant: Delphi Technologies Holding S.à.r.l.

Inventor： Baker, Nigel ,  Martin, Steven ,  Griffin, Peter ,  Cheever Jr, Gordon ,  Downey, Joel ,  Engel, Joseph

IPC: F02D41/20 ,  H01L41/04

CPC classification number: F02D41/2096 ,  F02D2041/2051 ,  F02D2041/2058 ,  F02D2041/2072 ,  F02D2041/2082

Abstract: A method of controlling a drive circuit (20a, 20b, 20c) for an injector arrangement including at least one injector (12; 12a, 12b) having capacitive-like properties, the drive circuit including at least one inductor (L1; L11; L21; L22) and a bidirectional current path (26) coupled to the at least one injector; selector means (Q13, Q14, Q23, Q24) for selecting one of the at least one injector(s) (12; 12a, 12b); and switching means for controlling current flow through the at least one injector (12; 12a, 12b) and the at least one inductor (L1; L11; L21; L22) to open and close the at least one injector, wherein the switching means includes a discharge switch means controllable to cause a charging current (I CHARGE ) to flow through the bidirectional current path (26) during a charge mode so as to charge the at least one injector, and discharge switch means (Q2; Q12; Q22) to cause a discharge current (I DISCHARGE ) to flow through the bidirectional current path (26) during a discharge mode so as to discharge the at least one injector. The method comprises selecting an injector (12; 12a, 12b) to permit a discharging current to be supplied thereto so as to initiate an injection event; activating the discharge switch means (Q2; Q12; Q22) to supply the discharging current to the selected injector until the voltage across the selected injector reaches a predetermined discharge level (V discharge ); and enabling the discharge switch means (Q2; Q12; Q22) for a time period (t1) after the predetermined discharge level (V discharge ) has been reached thereby reducing voltage ringing in the drive circuit.

公开(公告)号：EP1847705B1

公开(公告)日：2012-09-26

申请号：EP06252022.6

申请日：2006-04-12

Applicant: Delphi Technologies Holding S.à.r.l.

Inventor： Walsh, Joseph ,  Sykes, Martin ,  Griffin, Peter

IPC: F02D41/20

CPC classification number: F02D41/2096 ,  F02D2041/2055 ,  F02D2041/2058

公开(公告)号：EP1860307B1

公开(公告)日：2011-10-12

申请号：EP06254039.8

申请日：2006-08-01

Applicant: Delphi Technologies Holding S.à.r.l.

Inventor： Sykes, Martin ,  Walsh, Joseph ,  Hopley, Daniel ,  Griffin, Peter

IPC: F02D41/20

CPC classification number: F02D41/2096 ,  F02D2041/2058 ,  F02D2200/0602