Glossary “negative back pressure EGR valve” Definition:
EGR valve having a normally closed bleed hole which opens when back pressure drops, reducing vacuum above the diaphragm and cutting off the recirculation flow.
Glossary “negative back pressure EGR valve” Definition:
EGR valve having a normally closed bleed hole which opens when back pressure drops, reducing vacuum above the diaphragm and cutting off the recirculation flow.