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!