Реферат: Forced Air Induction Essay Research Paper The

or intrance alone. The intake passage is a direct and simple path to the

compressor cartridge. The exit, however, is fluted from the from a very wide and

narrow, almost rectangular, passage at the side of the compressor to a standard

2 ? inch inside diameter round pipe fitting. This fluted shape insures that the

speed of the compressed charge is kept relatively high. The high speed maintains

that the compressed charge is kept away from the compressor. If it were allowed

to back up near the compressor, the compressor would have to work much harder to

move the already dense air. The result would be that the clready compressed air

would be further compressed and heated. Although the small inlet and outlet

sizes contribute to increased velocity With the introduction of the Garret

VNT-25 it is now possible for a small displacement turbo charged engine to

operate and perform nearly identical to a much larger engine. The ON/OFF switch

of turbo power is gone and is now replaced by the safer, smoother, and much more

linear acceleration comparable to naturally aspirated engines of much larger

displacement. A VNT-25 equipped engine also has the potential to, and usually

does, produce much more power than engines twice its size. However, with

disciplined drivers, it does not loose the fuel economy characteristics inherent

with small, normally aspirated engines when the turbo is not in use. The VNT-25

combines the responsiveness of a small turbo with the efficiency and performance

of a much larger turbocharger. Simply stated, the VNT-25 is the ideal

turbocharger. It allows great power almost no turbo lag, great responsiveness,

retains engine and compressor efficiency, and allows excellent turbine control

from boost creep.

Ralph C. Bohn, Angus MacDonald. Energy Technology. Fourth Edition, Peoria,

IL: Macmillan/McGraw Publishing, 1992. Chrysler Passenger Cars Factory Service

Manual vol.1; Engine and Chassis 1990. www.alliedsignal.com/business/turbo/about_cas.html

http://idt.net/~vnt4/vntrpt.html http://idt.net/~vnt4