Engines Flashcards
What type of engine is the Technify Engine?
4-Cylinder automotive diesel engine modified for aviation
Do Technify engines use spark plugs?
No spark plugs
How is combustion provided in Technify engines?
By high compression ratio (15:1) and precise fuel injection timing
What is the compression ratio for gasoline engines compared to Technify engines?
9:1 for gasoline engines
What is the configuration of the Technify engine?
Turbocharged and water-cooled, in-line cylinder arrangement
What is the geared ratio of the Technify engine?
1:1.69 prop to engine RPM ratio
What is the horsepower rating of the Austro E4-B engine?
168 horsepower, 100% power (5 minute limit per flight)
What is the maximum continuous power for the Austro E4-B engine?
153 horsepower, 92% power
What is the maximum immediate engine restart altitude?
18,000 feet
What is the maximum engine restart altitude within 2 minutes?
10,000 feet
What does FAA Airworthiness Directive 2018-18-02 limit?
Limits the use of a windmilling restart for emergencies only
What are the risks associated with windmilling restart?
Failure of engine timing chain, loss of engine thrust control, reduced control of the airplane
Do diesel engines require spark plugs?
No
What is the purpose of glow plugs in diesel engines?
To pre-heat a cold engine
What indication is displayed when glow plugs are receiving power?
L/R GLOW ON
When might the L/R GLOW ON display appear?
Immediately after engine start
What is the maximum time to engage the starter?
10 seconds
How long should you wait between starter attempts?
20 seconds
After how many attempts should the starter cool for 30 minutes?
6 attempts
What does L/R STARTER indicate?
Starter is engaged, should extinguish after successful engine start
What is the engine oil capacity for the DA42?
6.0 Liters
What is the minimum oil capacity for the DA42?
4.5 liters
What type of oil should be used in the engine?
Approved diesel oil, such as Aeroshell Oil Diesel 10W-40
What is the maximum allowable oil consumption?
0.1 liter/hour