公开(公告)号：US11365700B2

公开(公告)日：2022-06-21

申请号：US16693745

申请日：2019-11-25

Applicant: DENSO CORPORATION

Inventor： Keisuke Yanoto ,  Kazuya Kogo ,  Hatsumi Takeuchi

IPC: F02D41/40 ,  F02D41/24 ,  F02M51/00 ,  F02M61/10 ,  F02D41/20 ,  F02D41/14

Abstract: An ECU opens a valve element to inject fuel in conjunction with energization of a fuel injection valve provided for an engine. The ECU includes an injection control unit, a characteristic acquisition unit, and a fuel injection correction unit. The injection control unit implements a partial-lift injection during which the valve element does not reach a full-lift position to open the fuel injection valve by an energization time. The characteristic acquisition unit acquires an actual lifting behavior of the valve element as an actual lift characteristic when the partial-lift injection is implemented. The fuel injection correction unit compares the actual lift characteristic acquired by the characteristic acquisition unit with a predetermined reference characteristic and corrects a fuel injection quantity in the partial-lift injection based on a result of the comparison.