Engine Performance and Monitoring Concepts

The video tutorial covers various aspects of power plant engine instrument systems, including fuel flow systems, manifold pressure gauges, tachometers, and turbine engine exhaust gas temperature (EGT). It explains the importance of monitoring fuel flow for engine performance, how manifold pressure is controlled, and the function of tachometers in different engine types. The tutorial also discusses engine pressure ratio, turboprop engine torque, and temperature systems for cylinder heads and carburetors. Troubleshooting oil pressure issues and checking EGT systems without running the engine are also covered.

What are the main components of an engine fuel flow system?

• A gauge and a sensor

• A transmitter and an indicator

• A pump and a valve

• A transmitter and a receiver

Why is monitoring fuel flow important?

• To measure air intake

• To control engine temperature

• To assess fuel quality

• To indicate fuel consumption and engine performance

What does a manifold pressure gauge measure?

• Fuel flow rate

• Relative manifold pressure

• Absolute manifold pressure

• Engine temperature

What controls both manifold pressure and engine RPM in an engine with a fixed pitch propeller?

• The exhaust system

• The air intake

• The throttle control

• The fuel pump

What does a reciprocating engine tachometer indicate?

• Engine crankshaft speed

• Fuel flow rate

• Manifold pressure

• Engine temperature

How is turbine engine EGT typically measured?

• By monitoring engine RPM

• By measuring fuel flow

• By several thermocouples around the exhaust duct

• By a single sensor at the exhaust

What does the turbine engine pressure ratio indicate?

• Fuel efficiency

• Air intake pressure

• Thrust being developed

• Engine temperature

What pressures are measured to obtain the engine pressure ratio?

• Manifold pressure and air pressure

• Total inlet pressure and total exhaust pressure

• Cylinder pressure and exhaust pressure

• Fuel pressure and oil pressure

Where should the thermocouple be installed in a single probe cylinder head temperature system?

• On the coldest cylinder

• On the hottest cylinder

• Near the exhaust

• In the intake manifold

What could cause a severe drop in oil pressure in a turboprop engine while the oil supply remains full?

• Fuel pump failure

• Air intake obstruction

• Oil pressure transmitter or indicator malfunction

• Exhaust blockage