ELECTROMAGNETIC VALVE DRIVING DEVICE

Organization Name

Hitachi Astemo, Ltd.

Inventor(s)

Daichi Kawakami of Hitachinaka-shi JP

Noriaki Sumisha of Hitachinaka-shi JP

Junpei Kogawa of Hitachinaka-shi JP

ELECTROMAGNETIC VALVE DRIVING DEVICE

This abstract first appeared for US patent application 18836144 titled 'ELECTROMAGNETIC VALVE DRIVING DEVICE

Original Abstract Submitted

An electromagnetic valve driving device that controls an energization period to a solenoid coil provided in a fuel injection valve and causes the fuel injection valve to inject fuel a plurality of times during one combustion cycle of an internal combustion engine, the electromagnetic valve driving device includes: a storage that stores a correction amount map indicating a relationship between an energization pause period from a completion time of a first-half energization period, which is the energization period for a first fuel injection in the one combustion cycle, to a start time of a later-half energization period, which is the energization period for next fuel injection, and a correction amount for the later-half energization period; an energization period correction unit that obtains the correction amount from a command value of the energization pause period based on the correction amount map and corrects the later-half energization period based on the obtained correction amount; and an energization controller that energizes the solenoid coil based on a later-half correction energization period that is the later-half energization period corrected by the energization period correction unit.