Supercharger and turbcharging

Question 1

what is supercharging?

Answer 1

Increasing air/mixture density by increasing its pressure. Note in contrast to super- and turbocharging which differ from swirl, squish and tumble, as they conscentrate on mixing the fuel and air .

Question 2

what is the difference between mechanical supercharging and supercharging?

Answer 2

In mechanical supercharging there is a seperate pump/blower /compressor that is driven from power from the engine itself

Question 3

What is turbocharging?

Answer 3

a compressor and turbine on a single shaft —boosts the
inlet air/mixture density. The energy available in the exhaust stream drives the turbocharger turbine,
which drives the turbocharger compressor
-turbochargers are a type of supercharger.

Question 4

Name some compressor types for supercharging

Answer 4

Positive displacement pumps:Roots(most normal), vane and screw compressor.
aerodynamic compressors:centrifugal pump

Question 5

What is the advantage of running the output exhaust turbine with an adjustable nozzle for the turbomachine?

Answer 5

Can be adjusted to optimize efficiency depending on high or low rotational speed (I think this is called VVT)

Question 6

Besides variables nozzles, what are some other turbocharging arrangements that can be used

Answer 6

Sequential turbocharging (use more then one turbocharger and turn the axess one on and of after need) and optimalize turbocharger for part load (waste gate and blow by??)