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what is the reasson after complition of suction stroke and
started compression stroke inlet valve open for few digrees
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Answer Posted / om
It's kept so to pack more charge. If the inlet valve is
allowed to close at the starting of the comp. stroke the
pressure inside the cylinder will be below atmospheric. The
inlet valve is kept open few degrees during compression
stroke to pack a more charge under a presuure of charge
that enters through intake manifold and against the pre. of
rising piston during compression stroke. This is calles ram
effect
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