Supercharger: Description and Operation
This information has been updated by TSB # 93-0B-600 dated 11/25/92
Engine - View From Right Front Of Engine Compartment:
Supercharger Installation:
DESCRIPTION
The supercharger is a belt-driven, positive displacement air pump that consists of two counter-rotating helical rotors. The rotors each have three lobes that turn at minimal clearance between each other and the supercharger housing. The rotors are kept in precise time with each other by precision spur gears pressed onto the end of each rotor shaft. Rotors are supported at the front end by deep grove ball bearings and at the rear by precision roller bearings. The supercharger does not rely on engine oil for lubrication. A by-pass port is built into the supercharger housing and regulated by a by-pass valve/actuator and a computer controlled solenoid valve, for boost pressure relief when needed.
OPERATION
The supercharger pressurizes the intake manifold so the engine can burn more air and fuel in each cylinder cycle, to increase power output of the engine. The volume of the supercharger and the speed it turns, in relation to the engine speed and displacement, is designed to pump more air into the engine than the engine would normally use. Since the supercharger is a positive displacement pump, and is directly driven by the engine, boost pressure is available at any engine speed. Maximum boost pressures can range from 7 - 11 psi gauge pressure, depending on altitude (manifold absolute pressures approx. 1.7 X Barometric pressure under maximum boost.)