SEMINAR ON SUPERCHARGER. Content. Supercharger , the engine booster. Why supercharger ?? How it works ??? Working diagram of supercharger. Classification of supercharger. History. Roots supercharger. Twin-Screw Supercharger. Centrifugal Supercharger. Drives used in Supercharger.
A supercharger is an equipment that compresses the air being delivered to an engine, allowing the combustion chamber to be overfilled without enlarging
The higher concentration of
oxygen provided by a super-
charger is matched with a larger
amount of fuel from the fuel injectors
thus boosting the power of the
A typical supercharger
“More fuel + More air = Bigger explosion = Greater horsepower”.
Based on method of compression, Superchargers can be classified as:-
1. Positive-displacement type, which deliver a nearly-fixed volume of air per revolution at all speeds and a fairly constant level of boost regardless of engine speed.
2. Dynamic compressors rely on accelerating the air to high speed and then exchanging that velocity for pressure by diffusing or slowing it down & deliver increasing boost with increasing engine speed.
The Roots supercharger is the oldest design of supercharger.
machine that would help ventilate mine shafts.
supercharger in a car engine.
As the meshing lobes spin, air trapped in the pockets between the lobes is carried between the fill side and the discharge side & Large quantities of air move into the intake manifold and "stack up" to create positive pressure.
Working of a roots supercharger
Working of a twin-screw supercharger
(a device similar to a rotor) at very high speeds to quickly draw
air into a small compressor housing.
the most efficient and the most
common induction systems.
attachable to the front of the
Working of a centrifugal supercharger
Exhaust gas turbines:-
No special shutdown procedure is required with superchargers as they are not lubricated by engine oil . They can be shut down normally. Turbochargers must idle for about 30 seconds or so prior to shutdown so the lubricating oil has a chance to cool down.
(But because a supercharger can generate as much as 46 percent additional horsepower, I think the trade-off is worth it).