Honda Accord 2008 Manual page 456

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Fuel and Emissions Systems
System Description (cont'd)
Evaporative Emission (EVAP) Control Diagram
T h e E V A P c o n t r o l s m i n i m i z e t h e a m o u n t o f f u e l v a p o r e s c a p i n g t o t h e a t m o s p h e r e . V a p o r f r o m t h e f u e l t a n k is
t e m p o r a r i l y s t o r e d i n t h e E V A P c a n i s t e r u n t i l it c a n b e p u r g e d f r o m t h e c a n i s t e r i n t o t h e e n g i n e a n d b u r n e d .
• T h e E V A P c a n i s t e r is p u r g e d b y d r a w i n g f r e s h a i r t h r o u g h it a n d i n t o a p o r t o n t h e i n t a k e m a n i f o l d .
T h e p u r g i n g v a c u u m is c o n t r o l l e d b y t h e E V A P c a n i s t e r p u r g e v a l v e , w h i c h o p e r a t e s w h e n e v e r e n g i n e c o o l a n t
t e m p e r a t u r e is a b o v e 1 4 0 °F ( 6 0 °C).
• D u r i n g r e f u e l i n g , t h e f u e l t a n k v a p o r c o n t r o l v a l v e o p e n s f r o m p r e s s u r e i n t h e f u e l t a n k , a n d f e e d s t h e f u e l v a p o r t o
t h e E V A P c a n i s t e r .
11-58

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