Ice pressure protection device for actuatable valve i.e. injection valve, of motor car, has valve element whose inner side holds closing element that is attached to aperture in bottom part of valve element for forming non-return valve

摘要

#CMT# #/CMT# The device (1) has a housing (3) comprising an inner space (9), and a pot-shaped valve element (15) axially displaceably arranged in the inner space. The valve element is pushed against a wall (11) for closing a fluid channel (8) by a spring element (19) i.e. helical spring (20), with an open end. The fluid channel opens from the wall to the inner space. An inner side of the valve element holds a displaceable closing element (25). The closing element is attached to an aperture (24) in a bottom part (21) of the valve element for forming a non-return valve (25'). #CMT#USE : #/CMT# Ice pressure protection device for an actuatable valve i.e. injection valve, of a motor car (all claimed). #CMT#ADVANTAGE : #/CMT# The inner side of the valve element holds the displaceable closing element that is attached to the aperture in the bottom part of the valve element for forming the non-return valve, thus allowing required fluid to be entered into the inner space for pressure equalization between spring pressure and fluid pressure, and hence avoiding ice pressure damages in the valve. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic longitudinal sectional view of an ice pressure protection device. 1 : Ice pressure protection device 3 : Housing 8 : Fluid channel 9 : Inner space of housing 11 : Wall 15 : Pot-shaped valve element 19 : Spring element 20 : Helical spring 21 : Bottom part of valve element 24 : Aperture 25 : Displaceable closing element 25' : Non-return valve.