An exhaust gas recirculation (egr) valve and an exhaust gas recirculation (egr) system

摘要

An exhaust gas recirculation valve and system are disclosed. The valve 10 comprises an inlet 12, an outlet 14 and a valve element 16. In dependence of the movement of the valve one end of the valve element 16 allows fluid communication between inlet 12 and the outlet 14. Valve 10 comprises a diaphragm 18, a valve guide 20 and a spring 22. Diaphragm 18 is connected to a second end of the valve element 16. Diaphragm 18 forms a chamber 24 within valve 10 and is isolated from the part of valve 10 accommodating valve element 16. Chamber 20 is adapted to be filled with pressurized gas. Valve guide 20 is spaced apart from diaphragm 18. Valve guide 20 is located in proximity of inlet 12 of valve 10 and spring 22 is located in the space between diaphragm 18 and valve guide 20. Reference figure: Figure 1