Space-a Truckers

Ch 12 – Engine Breathing

The tool of choice to accurately check the inlet restriction of a dry air filter would be a:
WATER FILLED MANOMETER
A typical maximum specified inlet restriction for an air filter on a turbocharged diesel would be:

25″ WATER

Which of the following types of filters has the highest filtering efficiencies?
DRY POSITIVE
Which of the following be performed first when checking an engine that produces black smoke under load?
AIR FILTER RESTRICTION TEST
Which of the following best describes the function of a C-EGR sytem on a diesel engine?

IT DILUTES INTAKE CHARGE WITH COOLED DEAD GAS

Which of the following best describes the function of a wastegate in a current turbo boosted diesel engine?

OPTIONS EXHAUST GAS TO BYPASS THE TURBINE

When series turbocharging is used on an engine, which of the following should be true?

TWIN TURBOS ARE ARRANGED IN SERIES

What is the critical flow area managed by a VG turbo using a variable nozzle operating principle?
TURBINE VOLUTE

To produce peak manifold boost from a VN-type turbocharger, which of the following should be true?
VANES ARE IN THE NEARLY CLOSED POSITION

The constant geometry turbocharger used with a high torque rise highway diesel engine is usally designed to produce optimum efficiency at which RPM?
PEAK TORQUE