Compression Ignition Engine in the J182T Aircraft Cessna Single Engine Aircraft Maintenance Kevin Patrick – Cessna Fleet Programs Kevin Patrick – Cessna Field Service 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 Engine 4-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 SMA SR305-230E-C1 Engine P2/T2 Sensor Air Cooling Fins Oil Cooling Pressure Line Oil Cooling Galley for Exhaust Valve Prop Governor SMA SR305-230E-C1 Engine Fuel Injector Return Lines Fuel Injector Lines Vacuum Pump Turbocharger Fuel Filter SMA SR305-230E-C1 Engine Air Shut Off Valve Fuel Injection Pump ECU Fuel Injection Pump Back-up Power Lever Connection Control Actuator ECU Harness 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 Jet-A Fueling 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 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!