Patent ID: 6789778
Filing Date: 2004-09-14
Classification: F02M,F16K,H01F

Abstract:
Solenoid valve comprising:a housing (2) including a pressure terminal (P) and a flow terminal (F); a pole core (21) and a winding (12) being housed in the housing (2), the pole core (21) having an axial wall defining a hole, and the winding (12) surrounding the pole core (21); a flat armature (38) being fastened to a plunger (36), the plunger (36) passing through the hole in the pole core (21), and the plunger (36) including flattenings (58) at its ends proximate end faces of the pole core (21); an air gap being formed between the pole core (21) and the flat structure (38), the air gap being formed in a first position of the plunger (36) with respect to the pole core (21); a valve body (28) being coupled to the plunger (36), the valve body (28) disconnecting the pressure terminal (P) from the flow terminal (F) in the first position of the plunger (36); and an annular space (60) defining an equalization channel between the flattenings (58), the annular space (60) being bordered by the plunger (36) and the wall of the pole core (21), the annular space (60) providing fluid communication between the end faces of the pole an (21) and the flow terminal (T).