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% The engine CSU is an integral part of the engine control system. The engine control system measures % many engine parameters. It uses the values to set fuel flow and propeller blade angle for most efficient % performance. The pilot has only one lever to control engine performance.
% As with other constant speed propeller control systems, the CSU senses engine RPM and alters oil % pressure to the propeller to change blade angle as necessary. The engine control system sets the RPM % value for the CSU. Depending on the power setting the propeller pitch is adjusted so that the required % RPM will be obtained as shown in Figure 1.
% The inlet oil pressure at the CSU is 20 bar (290 psi). If the engine speed is too high, the CSU connects % the inlet oil pressure to the propeller piston. The piston moves to increase the blade angle. This % reduces the RPM.
% If the engine speed is too low, the CSU operates the governor three-way-valve so that the oil flows out % of the propeller. The piston moves to reduce the blade angle. This increases engine RPM.
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% 2300 % 2175% 2000
% % 1750
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% % % Figure 1: Propeller RPM Adjusted by the ECU
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Power Plant
AMM

CHAPTER 71
POWER PLANT

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Intentionally left blank
71-TITLE
Power Plant
AMM

TABLE OF CONTENTS CHAPTER 71 POWER PLANT % Section 71-00 Power Plant - Lycoming Engine
1.
General ..............................................1

2.
Description and Operation ................................3

 

Trouble-Shooting
1. General ............................................101

Maintenance Practices
1.
General ............................................201

2.
Remove/Install the Engine (without the Engine Mount) ........203

3.
Install the Engine (without the Engine Mount)................214

4.
Remove the Engine with the Engine Mount .................224

5.
Install the Engine with the Engine Mount ...................230

6.
Engine Test General ..................................238

7.
Engine Starting ......................................239

8.
Measure/Adjust Engine Performance......................241

9.
Engine Shut-Down....................................249

10.
After Engine Shut-Down................................249

11.
Engine Break-In......................................250

 

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% Section 71-01 % Power Plant - TAE 125 Diesel Engine % 1. General ..............................................1 % 2. Description and Operation ................................3 % 3. Engine Specification ....................................5 % Trouble-Shooting % 1. General ............................................101 % Maintenance Practices % 1. General ............................................201 % 2. Remove/Install the Engine (without the Engine Mount) ........201 % 3. Engine Test General ..................................213
71-CONTENTS
Power Plant
AMM

Section 71-10 % Engine Cowlings - Lycoming Engine
1.
General ..............................................1

2.
Description............................................1

 

Trouble-Shooting
1. General ............................................101
　
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