Blowers
m |
|||
| Line 21: | Line 21: | ||
ROOTS TYPE.... | ROOTS TYPE.... | ||
These blowers were never designed to compress air, just to move air from one place to another, sort of like your house fan. No internal compression takes place in the blower, but the restriction of the closed intake valves in your motor allow the buildup of pressure in the intake manifold and head ports. The centrifugal and screw type blowers make pressure inside the blower. | These blowers were never designed to compress air, just to move air from one place to another, sort of like your house fan. No internal compression takes place in the blower, but the restriction of the closed intake valves in your motor allow the buildup of pressure in the intake manifold and head ports. The centrifugal and screw type blowers make pressure inside the blower. | ||
| − | There are Roots designs which have 2 lobes on each rotor and others with 3 lobes on each rotor. There are also variations where the rotors are "twisted" into a helix along their axis to help prevent the "backwash" of air between the rotors and reduce "buffeting". | + | There are Roots designs which have 2 lobes on each rotor and others with 3 lobes on each rotor. There are also variations where the rotors are "twisted" into a helix along their axis to help prevent the "backwash" of air between the rotors and reduce "buffeting"............................. |
http://en.wikipedia.org/wiki/Roots_blower | http://en.wikipedia.org/wiki/Roots_blower | ||
| − | + | Here's a neat animation showing a straight-on view of the rotors in a 3-lobe Roots. Air entering is in blue and air exiting is in red................................................................... | |
| − | http://www.mekanizmalar.com/roots3.html | + | http://www.mekanizmalar.com/roots3.html............................................................. |
The Roots types we are most familiar with came as original equipment on GMC two-stroke diesel engines. The number of cylinders and the cubic inches per cylinder is the way the engines were designated, so the blowers just naturally were called by the same designation. For instance, a 4-71 | The Roots types we are most familiar with came as original equipment on GMC two-stroke diesel engines. The number of cylinders and the cubic inches per cylinder is the way the engines were designated, so the blowers just naturally were called by the same designation. For instance, a 4-71 | ||
Your Privacy Choices