Unit 1 Flashcards
Which engine component houses all of the internal components of the engine?
Block
Which engine component converts reciprocating motion, up and down, into rotary motion, round and round?
Crankshaft
Which engine component transfers the power of the piston to the crankshaft?
Connecting rod
The engine component that forms the top of the combustion chamber is the
cylinder head
The type of energy that the flywheel continually stores and releases to smooth the erratic operation of the engine is called
Kinetic
Which term describes a complete series of events?
Cycle
The position of the piston when it is at the highest point in its movement is best described by which term?
Top dead center (TDC)
Which term describes the position of the piston when it is at the lowest point in its movement?
Bottom dead center (BDC)
Which term describes the amount of time that both the intake and exhaust vales are open at the same time?
Valve overlap
In a diesel engine, how high does the compression of the air causes the temperature to rise?
over 1,000°F
On a two stroke engine, what creates the movement of intake air?
Blower
On a four stroke engine, what is the position of the valves and how is the piston moving during the exhaust event?
Intake vales closed, exhaust valve open, and the piston moving upward
Identify the component that provides an electrical spark in the combustion chamber at the proper time to ignite the air/fuel mixture
Ignition system
Which component prevents the voltage in an ignition system from arcing across the breaker points, causing them to burn?
Condensor
Identify a restriction in the passage of a carburetor that causes air to move faster
Venturi
What causes a four stroke gasoline engine to operate in a lean condition?
An excess of air
Which troubleshooting choice is not a probable cause that a gasoline engine will not crank?
Engine flooded
Identify the type of malfunction that occurs if a gasoline engine’s ignition firing order is incorrect
Engine backfires through the carburetor
What do you use to check the gap of breaker points to make sure it is at the specified distance?
Thickness gauge
Which item fits into irregularities that exist on surfaces as you connect two engine components during engine maintenance?
Gaskets
Identify the reason you inspect the vibration dampener during engine maintenance
Security, cracks, and chips
Identify the component that maintains the day tanks at the correct level without overflowing them?
Float valves
As the plunger of a mechanical injector moves up, what allows fuel to flow into the injector cup?
Opening the metering orifice
How high can the pressure be in a hydraulic fuel injector?
5,000 psi
