for: supercharger (disambiguation)
Welcome to CWAnswers
CWAnswers is your guide to the sprawling world wide web. The directory aims to provide a useful guide made by users. You can share your knowledge as well - simply sign up and edit your first entry. For questions just contact the team at support - at - cwanswers.com.
Weblinks for Supercharged
Top 10 for Supercharged
Things about Supercharged you find nowhere else.
Select content modules
A&A Corvette Superchargers and Performance Blog
Supercharged Corvette Feed. A&A Corvette + Vortech YSi Supercharger = First C6 ... Vortech Si-Trim Supercharger is the New Industry Standard February 5, 2009 ...www.aacorvette.com/blogProCharger Supercharger Blog
ProCharger HEMI Challenger Supercharger Systems: The Ultimate HEMI Power Adder! ... V-Twin happenings here, http://www.procharger.com/supercharger/blog/?cat=7 ...www.procharger.com/supercharger/blog/Supercharged Science Blog " Taking kids from bored to brainiac by ...
We here at Supercharged Science really want you ... Copyright © 2009 Supercharged Science Blog. Powered by WordPress and A Dream to Host theme by Art of Blog. ...www.superchargedscience.com/blog/ProCharger Supercharger Blog " 2009 "
... V-Twin happenings here, http://www.procharger.com/supercharger/blog/?cat=7 ... Be sure to check the blog for late-breaking racing and new product news, or the ...www.procharger.com/supercharger/blog/?m=200903Supercharged | A&A Corvette Superchargers and Performance Blog
Supercharged Corvette Feed. A&A Corvette + Vortech YSi Supercharger ... Welcome to A&A Corvette Performance's Supercharged Blog! This is our first post! ...www.aacorvette.com/blog/?tag=superchargedfor: supercharger (disambiguation)
A supercharger is an air compressor used for forced induction of an internal combustion engine. The greater mass flow-rate provides more oxygen to support combustion than would be available in a naturally-aspirated engine, which allows more fuel to be provided and more work to be done per cycle, increasing the power output of the engine.
A supercharger can be powered mechanically by a belt, gear, shaft, or chain connected to the engine's crankshaft. It can also be powered by an exhaust gas turbine. A turbine-driven supercharger is known as a turbosupercharger or turbocharger. The term supercharging refers to any pump that forces air into an engine, but, in common usage, it refers to pumps that are driven directly by the engine, as opposed to turbochargers that are driven by the pressure of the exhaust gases.
History
The first functional supercharger can be attributed to German engineer Gottlieb Daimler, who received a German patent for supercharging an internal combustion engine in 1885. Louis Renault patented a centrifugal supercharger in France in 1902. An early supercharged race car was built by Lee Chadwick of Pottstown, Pennsylvania in 1908, which, it was reported, reached a speed of .
Types of supercharger
There are two main types of supercharger defined according to the method of compression: positive-displacement and dynamic compressors. The former deliver a fairly constant level of boost regardless of engine speed (RPM), whereas the latter deliver increasing boost with increasing engine speed.
Positive displacement
Positive-displacement pumps deliver a nearly-fixed volume of air per revolution at all speeds (minus leakage, which is nearly constant at all speeds for a given pressure and so its importance decreases at higher speeds). The device divides the air mechanically into parcels for delivery to the engine, mechanically moving the air into the engine bit by bit.
Major types of positive-displacement pumps include:
- Roots
- Lysholm screw
- Sliding vane
- Scroll-type supercharger, also known as the G-Lader
- Piston as in Bourke engine
- Wankel engine
Positive-displacement pumps are further divided into internal compression and external compression types.
Roots superchargers are typically external compression only (although high-helix roots blowers attempt to emulate the internal compression of the Lysholm screw).
- External compression refers to pumps that transfer air at ambient pressure into the engine. If the engine is running under boost conditions, the pressure in the intake manifold is higher than that coming from the supercharger. That causes a backflow from the engine into the supercharger until the two reach equilibrium. It is the backflow that actually compresses the incoming gas. This is a highly inefficient process, and the main factor in the lack of efficiency of roots superchargers when used at high boost levels. The lower the boost level the smaller is this loss, and roots blowers are very efficient at moving air at low pressure differentials, which is what they were first invented for (hence the original term "blower").
