Cessna Single Engine Aircraft Maintenance
Kevin Patrick – Cessna Field Service
Compression Ignition Engine in the J182T Aircraft
Kevin Patrick – Cessna Fleet Programs
Course Outline
• Compression Ignition (Diesel) Technology
• Cessna J182T SMA Engine
• J182T Engine Indication
• Fuel Cap Changes
• J182T Performance Data
• Questions, Answers and Wrap-Up
Compression Ignition (Diesel) Technology
Compression Ignition (C.I.), better known as “diesel” engines do not use an ignition system for combustion of fuel in the cylinders.
C.I. Engines ingest air without fuel. When the air is compressed by the piston during the compression stroke, fuel is injected into the cylinder. The heat of the air compression process causes the fuel to combust spontaneously, this drives the piston downward and powers the engine.
Combustion timing is controlled by the timing of fuel injection into the cylinder.
Compression Ignition (C.I.) Engine Technology
C.I. Engine Technology
C.I. Engine Technology
C.I. Engine Technology
C.I. Engine Advantages
C.I. engines have several advantages over gasoline engines:
They burn less fuel than a petrol engine performing the same work
They have no high voltage electrical ignition system
They generate less waste heat in cooling and exhaust
The carbon monoxide content of the exhaust is minimal
Jet A cylinder lubrication properties
Cessna J182T SMA Engine
SMA SR305-230E-C1 oil and air cooled engine
ECU Controlled with Manual Backup Single lever power control Hartzell composite constant speed prop
Approved for Jet-A fuel only
SMA SR305-230E-C1 Engine4-cylinder, horizontally opposed engine
Direct drive engine, no gearbox or clutch
Turbocharged and intercooled with no waste gate
Air and oil cooled
Single power lever and computer controlled fuel scheduling
Fully mechanical, redundant backup fuel control system
100% power available to 10,000 ft standard atmosphere
75% power available at 20,000 ft standard atmosphere
2400 hr TBO
P2/T2 Sensor
Oil Cooling Pressure Line Prop Governor
Oil Cooling Galley for
Exhaust Valve
Air Cooling Fins
SMA SR305-230E-C1 Engine
Fuel Injector Lines
Turbocharger Fuel Filter
Vacuum Pump
Fuel Injector Return Lines
SMA SR305-230E-C1 Engine
ECU
Fuel Injection Pump
Air Shut Off Valve
SMA SR305-230E-C1 Engine
Back-up Power Lever
Connection
Control Actuator
ECU Harness
Fuel Injection Pump
SMA ECU System
SMA Fuel System
SMA Starting System
J182T Engine Indication
SMA J182T Engine Controls
SMA J182T Engine Controls
SMA Engine Indication
G1000 EIS Display Normal Mode
G1000 EIS Display Backup Mode
G1000 EIS Softkeys
Fuel Cap Changes
Standard Jet-A Fuel Truck
Nozzle
Jet-A Fueling
Jet- A Spade Nozzle Does Not
Allow Fueling with Round Avgas
Nozzle
Flapper Doors Prevents Fuel Siphoning if Cap is
Left Off
Jet-A Fueling
Jet-A Nozzle Inserted into Fuel Filler
Assembly Note “Stop” for Nozzle
Flapper Doors Opened by Jet-A Nozzle
Jet-A Fueling
Standard Jet-A Fuel Truck
Nozzle
Jet-A Fueling
J182T Performance Data
Review
• Compression Ignition (Diesel) Technology
• Cessna J182T SMA Engine
• J182T Engine Indication
• Fuel Cap Changes
• J182T Performance Data
• Questions, Answers and Wrap-Up
Thank You!