| 摘要 |
This valve mechanism (1) for an internal combustion engine comprises: a chamber having : - at least one inlet (A), - at least one fuel outlet (C1, C2), - at least one air outlet (B) and - a single-piece valve member (2) housed in the chamber, the valve member (2) being movable along an axis (X) between: - a closed position (figure 2), wherein the valve member (2) blocks the inlet (A), - an opened position (figure 3), wherein the valve member (2) does not block neither the inlet (A) nor the fuel outlet (C1, C2), and wherein the valve member (2) blocks the air outlet (B), the valve mechanism (1) being characterized in that the valve includes at least one bypass (4a, 4b) having a first end (4.1) opening in the chamber on the side of the inlet (A), and a second end (4.2) opening in the chamber on the side of the air outlet (B), and in that, in an air-purge position (figures 4 to 6), the valve member (2) blocks the fuel outlet (C1, C2) and does not block the inlet (A) nor the first and second ends (4.1, 4.2) of the bypass (4a, 4b), so that a fluid can flow (F5) from the inlet (A) along the by-pass (4a, 4b) and evacuates into the air outlet (B). |
