Copyright by Goodheart-Willcox Co., Inc.
Chapter 16 Turbocharging and Supercharging Systems 347
ASE-Type Questions—Chapter 16
1. A turbocharged vehicle has a severe detonation
problem. Engine power is good and initial igni-
tion timing is within specifications. Technician A
says that the trouble could be in the knock sensor.
Technician B says waste gate could be stuck closed.
Who is correct?
(A) Technician A.
(B) Technician B.
(C) Both A and B.
(D) Neither A nor B.
2. Technician A says that a normally aspirated engine
is equipped with a supercharger. Technician B says
that a normally aspirated engine is equipped with a
turbocharger. Who is correct?
(A) A only.
(B) B only.
(C) Both A and B.
(D) Neither A nor B.
3. All of the following are basic components of a
turbocharger except:
(A) bearing housing.
(B) turbine wheel.
(C) transfer pump.
(D) turbo shaft.
4. Technician A says that with a supercharged engine,
there is a slight delay in pressure and power increase
because the unit must build up speed. Technician B
says that a supercharger is driven by a belt connected
to the crankshaft pulley. Who is correct?
(A) A only.
(B) B only.
(C) Both A and B.
(D) Neither A nor B.
5. Technician A says that volumetric efficiency is a
measure of how much air an engine can draw in on
its power strokes. Technician B says that a normally
aspirated engine is limited by its volumetric efficiency.
Who is correct?
(A) A only.
(B) B only.
(C) Both A and B.
(D) Neither A nor B.
6. Technician A says that boost refers to any pressure
above atmospheric pressure in an engine’s combus-
tion chambers. Technician B says that boost refers
to any pressure above atmospheric pressure in an
engine’s intake manifold. Who is correct?
(A) A only.
(B) B only.
(C) Both A and B.
(D) Neither A nor B.
7. A loud growling noise can be heard coming from the
supercharger. Technician A says that the noise may
indicate rotor bearing failure. Technician B says that
the noise may indicate drive gear teeth breakage.
Who is correct?
(A) A only.
(B) B only.
(C) Both A and B.
(D) Neither A nor B.
8. The boost on a supercharger is measured and it is
found that the supercharger is producing no boost.
Technician A says that the ECM may not be send-
ing a signal to engage the electromagnetic clutch.
Technician B says that the supercharger bypass valve
may be stuck closed. Who is correct?
(A) A only.
(B) B only.
(C) Both A and B.
(D) Neither A nor B.
9. As a supercharger intercooler system is pressure
tested, the engine begins to run rough and white smoke
can be seen coming out of the tailpipe. Technician A
says that the cylinder head may be cracked. Technician
B says that the problem may be caused by bent cooling
fins on the intercooler. Who is correct?
(A) A only.
(B) B only.
(C) Both A and B.
(D) Neither A nor B.
10. The electromagnetic clutch on a supercharger is not
engaging. Technician A says to check for the proper
signal from the ECM. Technician B says that the clutch
coil should have high resistance in its windings. Who
is correct?
(A) A only.
(B) B only.
(C) Both A and B.
(D) Neither A nor B.