Patent ID: 9696732
Date: 2017-07-04
CPC Classifications: B60K,F02M,F16K,G05D

Claim:
1. A valve device comprising: a passage defining member that defines therein a passage through which fluid flows; a main valve body that is housed inside the passage, the main valve body being operated by an electromagnetic solenoid to selectively open and close the passage; and a restrictor body that is disposed downstream of the main valve body inside the passage, the restrictor body being operated by a pressure difference, which is generated when the passage is opened, between a pressure at an upstream side of the restrictor body and a pressure at a downstream side of the restrictor body, the restrictor body decreasing an opening degree of the passage as the pressure difference increases, wherein a valve seat is annually formed in the passage defining member, the main valve body seating on the valve seat, the valve seat has an inner circumferential surface forming a portion of the passage, and the passage is closed when the main valve body seats on the valve seat, wherein the valve device further comprises: