Small Craft Tech Final UPDATED Exam
Questions and CORRECT Answers
coal dust - Correct Answer- In his 1892 patent draft, Rudolf Diesel proposed
using__________as his engine's probable fuel.
A. diesel fuel
B. gasoline
C. coal dust
D. alcohol
solid fuel injection - Correct Answer- The 1920s saw the perfection of___________chamber
without using an air compressor.
A. solid fuel injection
B. turbochargers
C. four-stroke diesel engines
D. electronic fuel injection
Clessie Cummins - Correct Answer- The only diesel-powered vehicle ever entered in the
Indianapolis 500 was driven by__________ and completed the
race without a fuel stop.
A. James Packard
B. Clessie Cummins
C. Carl Linde
D. John Kohler
All of the above - Correct Answer- Electronically controlled fuel injection systems
use_________ to help diesel engines conform to strict emissions
standards.
A. a computer
B. sensors
C. actuators
,D. All of the above.
supercharger - Correct Answer- The use of a___________ improves diesel engine efficiency
by increasing power output.
A. hydraulic activator
B. supercharger
C. pneumatic governor
D. All of the above.
Cylinder block - Correct Answer- Which of the following is considered the foundation of the
diesel engine and supports all of the other engine
components?
A. Crankshaft.
B. Cylinder block.
C. Camshaft.
D. Cylinder head
water jackets - Correct Answer- Passages in the cylinder block that allow coolant to move
around the outside of the cylinder and carry off the
excess heat generated by combustion are called ___________.
A. wet sleeves
B. plenums
C. water jackets
D. galleries
piston rings - Correct Answer- Grooves cut into the side surface of the piston are fitted
with___________that seal in the compression and
combustion pressure, and control the lubricating oil film on the wall of the cylinder liner.
A. gaskets
B. O-rings
C. oil seals
D. piston rings
,Oil pickup tube - Correct Answer- Which of the following extends into the sump and is
covered by a coarse wire screen that prevents dirt and
bits of metal from entering the lubrication system and damaging the engine?
A. Vibration damper.
B. Oil pickup tube.
C. Flywheel.
D. All of the above.
cam lobes - Correct Answer- The action of opening and closing the valves is determined by
the size and shape of the
A. intake ports
B. cam lobes
C. ring gear
D. cylinder head
head gasket - Correct Answer- When the cylinder head is bolted to the block,
a___________is installed between the head and block to maintain an
airtight and watertight seal.
A. manifold
B. head gasket
C. Crossover
D. header
crosshead - Correct Answer- When two valves are used for the same function in a cylinder,
a__________is added to form a bridge between thevalves.
A. manifold
B. dual port
C. header
D. crosshead
, Intake manifold - Correct Answer- Which of the following distributes clean, filtered air to the
intake ports of each cylinder on a four-cycle
engine?
A. Air box.
B. Intake manifold.
C. Turbocharger.
D. Exhaust manifold.
charge air cooler - Correct Answer- A__________is a heat exchanger that is designed to cool
intake air before it enters the combustion chamber.
A. plenum
B. manifold
C. charge air cooler
D. radiator
cooled - Correct Answer- When air is compressed, it heats up. A diesel engine will perform
better if the intake air is_________before it enters the combustion chamber.
A. heated
B. filtered
C. cooled
D. humidified
compression - Correct Answer- During the_____________stroke, both the intake and exhaust
valves are closed while the piston moves upward in the cylinder.
A. intake
B. compression
C. power
D. exhaust
24° - Correct Answer- If the intake valves open 12° before top dead center (BTDC) and the
exhaust valves do not close until 12°
after top dead center (ATDC), the valve overlap is____________.
Questions and CORRECT Answers
coal dust - Correct Answer- In his 1892 patent draft, Rudolf Diesel proposed
using__________as his engine's probable fuel.
A. diesel fuel
B. gasoline
C. coal dust
D. alcohol
solid fuel injection - Correct Answer- The 1920s saw the perfection of___________chamber
without using an air compressor.
A. solid fuel injection
B. turbochargers
C. four-stroke diesel engines
D. electronic fuel injection
Clessie Cummins - Correct Answer- The only diesel-powered vehicle ever entered in the
Indianapolis 500 was driven by__________ and completed the
race without a fuel stop.
A. James Packard
B. Clessie Cummins
C. Carl Linde
D. John Kohler
All of the above - Correct Answer- Electronically controlled fuel injection systems
use_________ to help diesel engines conform to strict emissions
standards.
A. a computer
B. sensors
C. actuators
,D. All of the above.
supercharger - Correct Answer- The use of a___________ improves diesel engine efficiency
by increasing power output.
A. hydraulic activator
B. supercharger
C. pneumatic governor
D. All of the above.
Cylinder block - Correct Answer- Which of the following is considered the foundation of the
diesel engine and supports all of the other engine
components?
A. Crankshaft.
B. Cylinder block.
C. Camshaft.
D. Cylinder head
water jackets - Correct Answer- Passages in the cylinder block that allow coolant to move
around the outside of the cylinder and carry off the
excess heat generated by combustion are called ___________.
A. wet sleeves
B. plenums
C. water jackets
D. galleries
piston rings - Correct Answer- Grooves cut into the side surface of the piston are fitted
with___________that seal in the compression and
combustion pressure, and control the lubricating oil film on the wall of the cylinder liner.
A. gaskets
B. O-rings
C. oil seals
D. piston rings
,Oil pickup tube - Correct Answer- Which of the following extends into the sump and is
covered by a coarse wire screen that prevents dirt and
bits of metal from entering the lubrication system and damaging the engine?
A. Vibration damper.
B. Oil pickup tube.
C. Flywheel.
D. All of the above.
cam lobes - Correct Answer- The action of opening and closing the valves is determined by
the size and shape of the
A. intake ports
B. cam lobes
C. ring gear
D. cylinder head
head gasket - Correct Answer- When the cylinder head is bolted to the block,
a___________is installed between the head and block to maintain an
airtight and watertight seal.
A. manifold
B. head gasket
C. Crossover
D. header
crosshead - Correct Answer- When two valves are used for the same function in a cylinder,
a__________is added to form a bridge between thevalves.
A. manifold
B. dual port
C. header
D. crosshead
, Intake manifold - Correct Answer- Which of the following distributes clean, filtered air to the
intake ports of each cylinder on a four-cycle
engine?
A. Air box.
B. Intake manifold.
C. Turbocharger.
D. Exhaust manifold.
charge air cooler - Correct Answer- A__________is a heat exchanger that is designed to cool
intake air before it enters the combustion chamber.
A. plenum
B. manifold
C. charge air cooler
D. radiator
cooled - Correct Answer- When air is compressed, it heats up. A diesel engine will perform
better if the intake air is_________before it enters the combustion chamber.
A. heated
B. filtered
C. cooled
D. humidified
compression - Correct Answer- During the_____________stroke, both the intake and exhaust
valves are closed while the piston moves upward in the cylinder.
A. intake
B. compression
C. power
D. exhaust
24° - Correct Answer- If the intake valves open 12° before top dead center (BTDC) and the
exhaust valves do not close until 12°
after top dead center (ATDC), the valve overlap is____________.
