Patent ID: 9194279
Filing Date: 2015-11-24
Classification: F01P,F16K,G05D,Y10T

Abstract:
1. A method for controlling coolant flow, comprising: forcing an engine coolant control valve open in a first position by mechanically locking the control valve in an open position with a locking element non-positively connected to a valve housing, facilitating coolant addition to a coolant circuit, the locking element arranged circumferentially around a control valve central axis; routing coolant in the coolant circuit via the control valve in the first position; in response to coolant temperature above a threshold, disabling the non-positive connection of the locking element so that the control valve is in a second position, no longer forced open through mechanical causation; in response to coolant temperature below the threshold, blocking coolant flow in the coolant circuit via the control valve in a third position; and wherein the control valve further comprises an expansible material element arranged in a valve body, an energy accumulator having an abutment element and a valve seat, and wherein the locking element is fastened to the abutment element and movable together with the abutment element in the second position and the third position, the locking element having a counter-latching face and the valve housing having a corresponding latching face.