公开(公告)号：US11193464B2

公开(公告)日：2021-12-07

申请号：US16795946

申请日：2020-02-20

Applicant: DENSO CORPORATION

Inventor： Hiroki Tanada ,  Naofumi Adachi ,  Masayuki Suzuki ,  Toshiaki Hijima ,  Motoya Kambara

IPC: F02M1/00 ,  F02M47/02 ,  F02M63/00

Abstract: A fuel injection valve includes a needle valve that controls communication between a high pressure chamber and an injection hole, a follower valve provided inside a control chamber controlled by fuel pressure inside an intermediate chamber, and an open-close valve that controls communication between a first passage and a low pressure passage and communication between a second passage and the low pressure passage. The fuel injection valve is configured to control the gradient of the fuel injection rate from the injection hole with an improved configuration.