公开(公告)号：US20140336902A1

公开(公告)日：2014-11-13

申请号：US14264145

申请日：2014-04-29

Applicant: DENSO CORPORATION

Inventor： Hiroki IGARASHI ,  Toru ITABASHI ,  Takahiko FURUTA

IPC: F02D41/30

CPC classification number: F02D41/3005 ,  F02D41/20 ,  F02D2041/2003 ,  F02D2041/2006 ,  F02D2041/2027 ,  F02D2041/2048 ,  F02D2041/2051 ,  F02D2041/2089 ,  F02D2041/2093 ,  F02M59/102

Abstract: An electrical control unit includes a constant voltage supply unit which supplies a constant voltage to a fuel injector, a boosted voltage supply unit which supplies a boosted voltage to the fuel injector, a control unit which controls supply timings of the constant voltage supply unit and the boosted voltage supply unit, and an interrupter which interrupts electric current when a short-circuit occurs in the boosted voltage supply unit. When an interruption of the interrupter is not detected, the boosted voltage supply unit supplies boosted voltage to start a fuel injection and the constant voltage supply unit supplies constant voltage to continue the fuel injection. When an interruption of the interrupter is detected, the constant voltage supply unit and the boosted voltage supply unit advance an interrupted power supply start timing relative to a non-interrupted power supply start timing to prevent delay of a fuel injection start timing.

Abstract translation: 电气控制单元包括向燃料喷射器供给恒定电压的恒压供给单元，向燃料喷射器供给升压电压的升压电压供给单元，控制恒压供给单元的供给定时和 升压电压单元，以及在升压电压单元发生短路时中断电流的中断器。 当未检测到中断器的中断时，升压电压单元提供升压电压以开始燃料喷射，并且恒定电压供应单元提供恒定电压以继续燃料喷射。 当检测到中断器的中断时，恒定电压提供单元和升压电压单元相对于未中断的电源开始定时提前中断的电源开始定时，以防止燃料喷射开始定时的延迟。