Glossary “negative back pressure EGR” Definition:
EGR system having a normally closed bleed hole which opens when back pressure increases, closing a diaphram valve and allowing engine vacuum to raise the pintal valve off the seat.
Glossary “negative back pressure EGR” Definition:
EGR system having a normally closed bleed hole which opens when back pressure increases, closing a diaphram valve and allowing engine vacuum to raise the pintal valve off the seat.