公开(公告)号：US20220268249A1

公开(公告)日：2022-08-25

申请号：US17595630

申请日：2020-06-09

Applicant: Hitachi Astemo, Ltd.

Inventor： Kazuhiro ORYOJI ,  Yoshihiko AKAGI ,  Takayasu MATSUSHITA

IPC: F02P5/15 ,  F02B23/08

Abstract: Provided is an internal combustion engine control device capable of reducing a measurement load and calculating a flow velocity around an ignition plug. The internal combustion engine control device includes an inter-gap voltage calculation unit 31 and a flow velocity calculation unit 32. The inter-gap voltage calculation unit 31 calculates a reference inter-gap voltage under a reference condition, based on a secondary current and in-cylinder pressure. The flow velocity calculation unit calculates the flow velocity of a gas around the ignition plug based on the reference inter-gap voltage.

公开(公告)号：US20230213013A1

公开(公告)日：2023-07-06

申请号：US17927992

申请日：2021-02-12

Applicant: Hitachi Astemo, Ltd.

Inventor： Takayasu MATSUSHITA ,  Osamu MUKAIHARA ,  Kohei SUZUKI

IPC: F02P5/15 ,  F02P5/153

CPC classification number: F02P5/1516 ,  F02P5/153 ,  F02P3/0407

Abstract: Provided is an ignition control device capable of suppressing wear of an ignition plug due to occurrence of a re-strike without adding a component. An ECU 123 used as an ignition control device includes: an ignition signal calculation unit 203 that calculates a start timing and an end timing of re-energization with a primary current in one ignition process, compares the end timing of the re-energization with the timing at which the frequency of occurrence of a re-strike decreases, and determines whether to perform the re-energization; and an ignition signal generation unit 204 that generates an ignition signal for generating at least one or more spark discharges in the ignition process, outputs the ignition signal to the ignition coil, then generates the ignition signal when the ignition signal calculation unit determines to perform the re-energization, outputs the ignition signal to the ignition coil at the start timing of the re-energization, and does not generate the ignition signal when the ignition signal calculation unit determines not to perform the re-energization.