| 摘要 |
<p>Provided is the structure of a control valve of accumulator fuel injection equipment wherein an adverse effect by bounce can be reduced by a low-cost means without requiring any special device in the control valve structure of accumulator fuel injection equipment. The control valve structure of accumulator fuel injection equipment is characterized in that the cross-sectional shape at the distal end of a control valve (8) along the central axis line thereof is constituted in such a manner that a bend consisting of at least one inflection point (Z1) is formed, a first face portion (3a) is formed on the root side from the bend, a second face portion (3c) is formed on the distal end side, the first face portion (3a) abuts on the seat portion (2a) of a nozzle body to form a fully closed position, a variation in the area of an opening which is formed between the first face portion (3a) and the seat portion (2a) is smaller than a fixed ratio when the inflection point (Z1) is lifted from the fully closed position to the seat portion (2a), and a variation in the area of an opening which is formed between the second face portion (3c) and the seat portion (2a) is larger than the fixed ratio for the lift when the lift of the inflection point (Z1) is larger than the lift of the seat portion (2a).</p> |
