公开(公告)号：WO2015068009A1

公开(公告)日：2015-05-14

申请号：PCT/IB2014/002272

申请日：2014-10-30

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： DODATE, Chikara

IPC: F02D33/02 ,  F02D41/34 ,  F02D35/02 ,  F02D41/40 ,  F02D41/30 ,  F02D37/02 ,  F02P5/04 ,  F02D13/02

CPC classification number: F02D41/3094 ,  F02B23/101 ,  F02B2023/106 ,  F02D35/0007 ,  F02D35/02 ,  F02D37/02 ,  F02D41/0002 ,  F02D41/34 ,  F02D41/40 ,  F02D41/401 ,  F02D2041/001 ,  F02D2041/0015 ,  F02D2200/0404 ,  F02D2200/101 ,  F02M57/04 ,  F02P5/045 ,  F02P13/00 ,  Y02T10/18 ,  Y02T10/42 ,  Y02T10/44

Abstract: In an internal combustion engine, an ignition plug is arranged near a center of an upper wall surface of a combustion chamber, and is used to ignite air-fuel mixture. Fuel injected from a port fuel injection valve is directed toward the center of the combustion chamber when the intake valve is open. The engine is configured to generate a tumble flow in a cylinder. A flow speed of gas around the ignition plug during ignition is controlled by changing a pattern of tumble flow between an ordinary first tumble flow pattern (engine speed range R1) and a different second tumble flow pattern (engine speed range R2) on the basis of an engine rotation speed. The tumble flow having the second pattern is generated by overlapping a fuel injection period of the port fuel injection valve with the open period of the intake valve (intake synchronous injection mode).

Abstract translation: 在内燃机中，火花塞设置在燃烧室的上壁面的中心附近，用于点燃空气 - 燃料混合物。 当进气门打开时，从端口燃油喷射阀喷射的燃料指向燃烧室的中心。 发动机被配置为在气缸中产生翻滚流。 点火期间火花塞周围的气体的流速通过在普通的第一滚筒流动模式（发动机转速范围R1）和不同的第二翻滚流程图（发动机转速范围R2）之间改变滚筒流动的模式来控制， 发动机转速。 具有第二图案的翻滚流是通过使进气口燃料喷射阀的燃料喷射期间与进气门的开启时间（进气同步喷射模式）重叠而产生的。