ASE Engine Performance

The power output from the crankshaft of a piston engine can be expressed in

• Brake Horsepower (BHP)

• Indicated Power (IP)

• Friction Power (FP)

• Maximum Continuous Power (MCP)

"Rated Power" is the brake power developed by an engine in good condition under

• standard conditions and at a stated RPM

• full throttle

• standard conditions and full throttle height

• full throttle and at service ceiling

Which of these conditions will produce the most efficient engine performance? Select all that apply

• Mixture properly leaned

• Aircraft at full throttle height

• Low RPM and high manifold pressure

• Carburettor heat selected on

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NGSS.HS-PS3-4

Mechanical Efficiency involves the relationship between power input and power output. It can be calculated by;

• brake power divided by indicated power

• brake power divided by fuel consumption

• volume of the charge divided by piston displacement

• fuel flow divided by brake power

Volumetric efficiency can be calculated by

• brake power divided by indicated power

• brake power divided by fuel consumption

• volume of the charge divided by piston displacement

• fuel flow divided by brake power

Tags

NGSS.HS-PS3-4

The Thermal efficiency of an engine is the

• brake power divided by indicated power

• brake power divided by fuel consumption

• volume of the charge divided by piston displacement

• fuel flow divided by piston displacement

Tags

NGSS.HS-PS3-4

The main function of the engine _______ is to let air in and out of the cylinders.

• Camshaft

• Valves

• Rocker arm

• Connecting Rod

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NGSS.MS-PS2-1

four-stroke cycle engine is an internal combustion engine that utilizes four distinct piston strokes to complete one operating cycle. What are the 4 basic steps in the correct order?

• Intake, Power , Compression, Exhaust

• Compression, Power, Intake, Exhaust

• Intake, Exhaust, Compression, Power

• Intake, Compression, Power, Exhaust

During the intake stroke, ________________________________.

• Spent gases are forced out of the combustion chamber from the piston's travel from BDC to TDC

• Fuel is supplied to the combustion chamber

• Air - fuel mixture is deposited into the combustion chamber

• The piston travels from BDC to TDC to compress the fuel charge prior to ignition

Tags

NGSS.MS-PS2-2

Compression is a key element of an internal combustion engine. Which engine component supplies the compression needed to power an engine?

• Crankshaft

• Ignition Armature

• Connecting Rod

• Piston

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2