公开(公告)号：US20240110530A1

公开(公告)日：2024-04-04

申请号：US18370232

申请日：2023-09-19

Applicant: SUBARU CORPORATION

Inventor： Shinji WAKAMOTO

IPC: F02D41/06 ,  F02B19/12 ,  F02B19/18 ,  F02D41/40 ,  F02M23/10 ,  F02P5/15

CPC classification number: F02D41/068 ,  F02B19/12 ,  F02B19/18 ,  F02D41/401 ,  F02M23/10 ,  F02P5/1504 ,  F02D2041/389

Abstract: An engine is configured to ignite an air-fuel mixture with an electric spark to ignite an air-fuel mixture. The engine includes: a cylinder head including a chamber partition wall having through holes and defining a main combustion chamber and a sub-combustion chamber; a fuel injector that injects fuel into the main combustion chamber; an air injector that injects air into the sub-combustion chamber; an ignition device causes an electric discharge between an ignition electrode and the chamber partition wall; and a control system that controls the fuel and air injectors, and the ignition device. At a compression stroke during a warm-up operation, the fuel is injected throughout a first period, and the air is injected throughout a second period at least partially overlapping the first period. At a power stroke during the warm-up operation, the electric discharge is caused after the fuel is injected.