Control chamber filling and draining control valve for e.g. diesel engine, has slots disposed in opposite manner by displacement of throttle valve that is arranged such that restrained passage remains opened between lateral surfaces

摘要

#CMT# #/CMT# The valve has a throttle valve (50) displaced in a pipe (32) between maximum and minimum flow positions. A slot (46) is provided on a lateral surface (48) of the pipe. The slot emerges on a side (34) of a valve seat (30). A slot (60) emerges at the level of a side (36) of the valve seat. The slots are confirmed such that the slots are disposed in an opposite manner by a displacement of the throttle valve along an axis (A2). The valve is arranged such that a restrained passage remains opened between a lateral surface (62) of the throttle valve and the lateral surface (48). #CMT# : #/CMT# An independent claim is also included for an injection method implementing a closed injector. #CMT#USE : #/CMT# Used in a control valve device of a common rail type internal combustion engine e.g. diesel engine, for controlling filling and draining of a control chamber that controls movement of a closed injector of the internal combustion engine (all claimed). #CMT#ADVANTAGE : #/CMT# The relative position of the slots can be adjusted to permit adjustment of fuel flow through the pipe at two speeds, thus allowing to adjust opening and/or closing speed of the control valve. The device permits to adapt the opening speed and closing of an injection orifice of the injector based on parameters of the engine in a better manner. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a sectional view of a valve control device. A2 : Axis 30 : Valve seat 32 : Pipe 34, 36 : Valve seat`s sides 46, 60 : Slots 48 : Pipe`s lateral surface 50 : Throttle valve 62 : Throttle valve`s lateral surface.