Final

Question 1

A machine for converting various forms of energy into mechanical force and motion.

Answer 1

Engine

Question 2

A machine that converts energy from fuel to some mechanical energy, creating motion in the process.

Answer 2

Engine

Question 3

In thermodynamics terms, engines are generally referred to _____________ which produces macroscopic motion of heat.

Answer 3

Heat engine

Question 4

Also called Cylinder block

Support the components of the engine

Transfer heat from friction to the atmosphere and engine coolant

Answer 4

Engine block

Question 5

-Support the crankshaft bearings

-Provides a sump for the bearing and crosshead lube oil

-provides support for the crosshead assembly

Answer 5

Crankcase

Question 6

-main shaft of the engine

• responsible for the proper operation of the engine and converting a linear motion to a rational motion.

Answer 6

Crankshaft

Question 7

-Also called main bearing

-support crankshaft providing it’s rotation under inertia forces generated by the parts of the shaft and oscillating forces transmitted by the connecting rods.

Answer 7

Crankshaft bearing

Question 8

-connects the piston to the crankshaft

-transfer motion from the piston to the crankshaft and functions as a lever arm.

Answer 8

Connecting rod

Question 9

-A moving disk enclosed in a cylinder

-aids in the transformation of heat energy into mechanical work and vice versa

Answer 9

Piston

Question 10

-Expanding rings placed in the grooves of the piston to create a seal that prevents the passages of fluid or gas past in the piston.

Answer 10

Piston ring

Question 11

-also known as the oil pan or oil sump

-collect and store the oil that circulates through the engine, providing a constant supply for lubrication

Answer 11

Sump

Question 12

-also known as the cylinder head

-closes off the combustion chamber of the engine from the top.

Answer 12

Head

Question 13

-designed to seal the internal combustion process and keep any fluids from leaking and mixing.

-keeps coolant or oil pan leaking preventing the engine from overheating

Answer 13

Head gasket

Question 14

-Responsible for controlling the opening and closing of the engines intake and exhaust valve.

Answer 14

Camshaft

Question 15

-it keeps the camshaft rotating properly.

Answer 15

Camshaft gear

Question 16

Allow the starter to crank the engine in the forward direction.

Answer 16

Starter clutch

Question 17

It controls the flow of air and fuel mixture into the combustion chamber and allows the exhaust gases to exit.

Answer 17

Valve

Question 18

-Closes intake and exhaust valves by spring action

-provides sufficient force throughout the engine cycle to maintain the tappet contact with the cam at all speeds within the engine speed range.

Answer 18

Valve spring

Question 19

-also known as a valve lifter

-support the valve command controlling and managing the fuel intake and ensure the sync of these commands

Answer 19

Tappet

Question 20

-removal section of a two-piece connecting rod that provides a bearing surface for the crankpin journal.

Answer 20

Connecting rod cap

Question 21

-an annular component which rotates with the shaft

• act as canes for slinging oil away from the shaft and from the passage from the bearing housing into the compressor housing.

Answer 21

Oil slinger

Question 22

-a device that is used to convert the vaporized fuel back into a liquid form

Answer 22

Condenser

Question 23

A part consisting of coils of wire around an iron core that induces an electric current when it is rotated in magnetic field.

Answer 23

Armature and coil

Question 24

A heavy wheel that maintains the speed of the engine while it is running.

Answer 24

Flywheel

Question 25

-also known as contact points -its function is to cause intermittent current flow in the primary circuit, thus causing the magnetic field in the coil to build up and collapse when it reaches maximum strength

Answer 25

Breaker points

Question 26

Used to prevent leakage of fluids and gases, protect equipment from harsh environment conditions, and ensure good lubrication of internal components.

Answer 26

Oil seal

Question 27

Used to rotate (crank) an internal-combustion engine so as to initiate the engine's operation under its own power

Answer 27

Vertical pull starter

Question 28

-mated and fixed to the tip end of the valve to maintain a working spring height. -responsible for keeping the correct pressure on the valve spring by working together with the valve keepers

Answer 28

Valve spring retainer

Question 29

The piece that locks over the rod bolt to keep it from backing out (loosing up).

Answer 29

Rod cap bolt lock

Question 30

A device for automatically mixing fuel in the power proportion with air to produce a combustible gas.

Answer 30

Carburetor

Question 31

A device that filters the air that is mixed with fuel in the engine

Answer 31

Air cleaner

Question 32

A device inserted into the combustion chamber of an engine that contains an insulated control electrode for conducting current.

Answer 32

Spark plug

Question 33

-A reservoir that holds the fuel supply. -Serve as an important means of dissipating heat from the fuel that is returned from the engine.

Answer 33

Fuel tank

Question 34

Type of heat engine ?

Answer 34

External combustion Engine( ECE) Internal Combustion Engine (ICE)

Question 35

A type of engine in which an external heat source is utilized to ignite the internal working fluid.

Answer 35

Internal combustion engine

Question 37

Example internal combustion engine

Answer 37

Steam engine and Stirling engine

Question 38

An engine that works by burning fuel inside the engine converting the heat energy of fuels into mechanical energy.

Answer 38

Internal combustion Engine (ICE)

Question 39

An engine that works by burning fuel inside the engine converting the heat energy of fuels into mechanical energy.

Answer 39

Internal combustion engine

Question 40

Two main types of ICE according to fuel used.

Answer 40

Gasoline Diesel

Question 41

A mixture of volatile , flammable liquid hydrocarbons derived from petroleum and used for internal-combustion engines.

Answer 41

Gasoline

Question 42

Also called diesel oil, combustible liquid used as fuel for diesel engines , ordinarily obtianed from fractions of crude oil that are less volatile.

Answer 42

Diesel engine

Question 43

Classification ICE according to ignition process.

Answer 43

Spark-ignition engine (gasoline engine Compression-ignition engine( diesel engine)

Question 45

An ignition process where the internal combustion engine where the combustion process of the air-fuel mixture is ignited by a spark from a spark plug.

Answer 45

Spark-ignition engine

Question 46

Ignition process where an internal combustion engine where the heat generated from compression together with the injection of fuel to initiate the combustion process.

Answer 46

Compression-ignition engine

Question 47

The up and down movement of the piston

Answer 47

Stroke

Question 48

The movement of the piston from the highest point to its lowest in the cylinder.

Answer 48

Down stroke

Question 49

The piston travels from its lowest point to the highest point in the cylinder

Answer 49

Up-stroke

Question 50

Classification of internal combustion engine according to number of strokes

Answer 50

Two-stroke IC Engine Four-stroke IC engine