Chapter 11 Engine Fundamentals Exam
Study Guide Test.
Engine - CORRECT ANSWER Source of power for the vehicle
TDC (Top Dead Center) - CORRECT ANSWER The piston at its highest point in the cylinder
BDC (Bottom Dead Center) - CORRECT ANSWER The piston at its lowest point in the cylinder
Piston Stroke - CORRECT ANSWER The distance the piston slides up or down from the TDC to the BDC
Four Stroke Cycle - CORRECT ANSWER Intake, compression, power, exhaust
Intake stroke - CORRECT ANSWER Draws fuel and air into the engine; the intake valve is open and the
piston is moving down in the block
Compression Stroke - CORRECT ANSWER Squeezes the air fuel mixture to prepare it for combustion;
both valves are closed and the piston is moving up in the block
Power Stroke - CORRECT ANSWER The spark plug fires as the piston nears TDC, igniting the air-fuel
mixture; the expansion of gases are transferred from the piston resulting in crankshaft rotation
Exhaust Stroke - CORRECT ANSWER Removes burned gases from the engine; exhaust valve is open and
piston is moving up
Engine Bottom End (Short Block) - CORRECT ANSWER Crankshaft, block, connecting rods, and pistons
also called the rotating assembly
Engine block (cylinder block) - CORRECT ANSWER Forms the main body of the engine
, Cylinders - CORRECT ANSWER Round holes machined (top-to-bottom) through the block that hold the
pistons
Deck (Deck surface) - CORRECT ANSWER The top of the block surrounding the cylinders
Water jackets - CORRECT ANSWER Coolant passages through the block
Core plugs (freeze plugs) - CORRECT ANSWER Round, metal plugs on the outside of the block. Seal holes
in the block
Main bearing bores - CORRECT ANSWER Holes machined in the bottom of the block (front-to-back) to
hold the crankshaft
Main bearing inserts - CORRECT ANSWER Fit into the main bore and support the crankshaft
Main caps - CORRECT ANSWER Bolt to the bottom of the block and hold the crankshaft and main bearing
inserts in place
Crankshaft - CORRECT ANSWER Changes the up and down (reciprocating) movement of the pistons into
rotating motion
Crankshaft main journals - CORRECT ANSWER Fits into the blocks main bearings
Crankshaft rod journals - CORRECT ANSWER Connecting rods bolt to the rod journals
Counterweights - CORRECT ANSWER On the crankshaft to prevent vibration
Crankshaft snout - CORRECT ANSWER Sticks through the front of the block and supports the camshaft
drive, front damper and pulleys
Study Guide Test.
Engine - CORRECT ANSWER Source of power for the vehicle
TDC (Top Dead Center) - CORRECT ANSWER The piston at its highest point in the cylinder
BDC (Bottom Dead Center) - CORRECT ANSWER The piston at its lowest point in the cylinder
Piston Stroke - CORRECT ANSWER The distance the piston slides up or down from the TDC to the BDC
Four Stroke Cycle - CORRECT ANSWER Intake, compression, power, exhaust
Intake stroke - CORRECT ANSWER Draws fuel and air into the engine; the intake valve is open and the
piston is moving down in the block
Compression Stroke - CORRECT ANSWER Squeezes the air fuel mixture to prepare it for combustion;
both valves are closed and the piston is moving up in the block
Power Stroke - CORRECT ANSWER The spark plug fires as the piston nears TDC, igniting the air-fuel
mixture; the expansion of gases are transferred from the piston resulting in crankshaft rotation
Exhaust Stroke - CORRECT ANSWER Removes burned gases from the engine; exhaust valve is open and
piston is moving up
Engine Bottom End (Short Block) - CORRECT ANSWER Crankshaft, block, connecting rods, and pistons
also called the rotating assembly
Engine block (cylinder block) - CORRECT ANSWER Forms the main body of the engine
, Cylinders - CORRECT ANSWER Round holes machined (top-to-bottom) through the block that hold the
pistons
Deck (Deck surface) - CORRECT ANSWER The top of the block surrounding the cylinders
Water jackets - CORRECT ANSWER Coolant passages through the block
Core plugs (freeze plugs) - CORRECT ANSWER Round, metal plugs on the outside of the block. Seal holes
in the block
Main bearing bores - CORRECT ANSWER Holes machined in the bottom of the block (front-to-back) to
hold the crankshaft
Main bearing inserts - CORRECT ANSWER Fit into the main bore and support the crankshaft
Main caps - CORRECT ANSWER Bolt to the bottom of the block and hold the crankshaft and main bearing
inserts in place
Crankshaft - CORRECT ANSWER Changes the up and down (reciprocating) movement of the pistons into
rotating motion
Crankshaft main journals - CORRECT ANSWER Fits into the blocks main bearings
Crankshaft rod journals - CORRECT ANSWER Connecting rods bolt to the rod journals
Counterweights - CORRECT ANSWER On the crankshaft to prevent vibration
Crankshaft snout - CORRECT ANSWER Sticks through the front of the block and supports the camshaft
drive, front damper and pulleys
