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Old 09-18-2010, 05:59 PM   #2 (permalink)
Master EcoModder
Join Date: May 2009
Location: New Jersey
Posts: 389

2003 Ninja EX250 - '03 Kawasaki Ninja EX250
90 day: 78.57 mpg (US)

Saturn - '99 Saturn SL1 Base
90 day: 47.27 mpg (US)
Thanks: 25
Thanked 58 Times in 37 Posts
A supercharger is belt driven off an engines crank pulley, such that its rotation depends on engine rpm. There are some that have a clutch operated pulley system that allows the supercharger to spin up to a desired speed and hold there throughout the rpm range; max boost instantly, or whenever you set it up to be.

"Forced induction" essentially increases the volumetric efficiency of an engine to that over the limits of natural aspiration. In a NA application, the VE of an engine varies on throttle position and rpm. In a FI application, you can have a VE of 100% (that is, 0psi of boost) at any throttle position and any rpm, if the turbo/supercharger is setup up to do so. This is possible because more air is being forced into your motor than the motor alone could suck in alone.

I used to have a 2000 Dodge Stratus Coupe with a mitsubishi 3.0L V6 engine. I extensively modified the car, adding a vortech v-1 s-trim supercharger, standalone computer, larger injectors, completely rebuilt motor, and much more. To make a long story short, having the supercharger on the car increased my cruising gas mileage about 10-15% compared to its stock NA form.

I sure do miss her. 550hp to the front wheels was very interesting:
Doing my part to reduce dependence on OIL
Doing my part to reduce congestion
And enjoying it!

If you have to use your brakes, you are driving too fast!

My 101.5 MPG 2003 Kawasaki Ninja 250

Crude Oil Price Today
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