Exam 18: Turbochargers and Superchargers

All of these are dynamic superchargers EXCEPT _____.

What is an aftercooler?

What are two common turbo scroll designs?

What is the name for the point at which boost first starts (1800 rpm, for instance)?

An engine not equipped with a supercharger is referred to as a normally _______ engine.

Technician A says following turbo use, turbo bearings cool quickly when the engine is shut off. Technician B says synthetic oil burns at a lower temperature so it is the oil of choice for use with a turbocharger. Who is right?

Technician A says a fixed geometry turbocharger requires pressure relief because it operates over a wide rpm band. Technician B says a wastegate is commonly used to control the speed of the turbine in automobile engines. Who is correct?

All of the following are true about superchargers EXCEPT:

When an engine produces sufficient exhaust flow to spin a supercharger or turbocharger enough to create boost, this is referred to as __________.

What is the name of the relief valve used to limit turbo boost pressure?

The two most common superchargers in automotive use are the _________ and the _________ types.

What is the area between the parallel walls of the compressor cover and bearing housing where the air leaves the wheel?

The rpm of the turbine increases about _______for every 1000-foot increase in altitude.

A properly working supercharger will increase the density of the air in the cylinder.

If a supercharger provides 15 psi of boost pressure, this effectively doubles the engine size. True or False?

If a normally aspirated engine climbs to 3000 feet in altitude, how much power will it lose?

What characterizes a positive displacement pump?

The time required to bring the turbo up to a speed where it can function effectively is called __________.

What causes the condition known as turbo surge?

Which uses power when cruising, a supercharger or a turbocharger?