| 摘要 |
PROBLEM TO BE SOLVED: To ensure that a reducing agent is sucked back from a reducing agent injection valve by using a simple configuration. ! SOLUTION: A reducing agent injection valve 70 includes: a housing 72 into which a reducing agent injected to an exhaust passage 11 of an internal combustion engine is supplied; an armature 74 that is slidably arranged within the housing 72, closes an orifice 72a of the housing 72 when the reducing agent injection valve is closed and separates from the orifice 72a of the housing 72 when the reducing agent injection valve is opened to inject the reducing agent from the orifice 72a to outside; a stopper 76 which the armature 74 comes closer to or comes in contact with when the reducing agent injection valve is closed; and passages 74d for the reducing agent each arranged at a portion where the armature 74 comes closer to the housing 72 or the stopper 76. ! COPYRIGHT: (C)2015,JPO&INPIT |
