A steady state performance model for general aviation spark-ignition piston engines

Conference · Sun Aug 01 04:00:00 EDT 1982 · Proc., Intersoc. Energy Convers. Eng. Conf.; (United States)

OSTI ID:5401434

Parkinson, R

A steady state performance model for naturally aspirated, spark-ignition, inlet port fuel injection, four-stroke piston aero engines using ignition timing optimized for maximum torque is presented. Model predictions of brake horsepower and leanout performance are described. Novel Corrected Quantities are identified that enable compact part-throttle performance representation for all altitudes. Airborne microprocessor implementation of this compact representation for General Aviation is addressed; this, plus implementation of a wide open throttle performance model, would provide the pilot with the engine control inputs required to minimize engine brake specific fuel consumption in any cruise flight condition. Such implementation in General Aviation piston-prop airplanes (in conjunction with a suitable airframe-propeller performance model) may result in cruise fuel savings of 17-21% below current usage.

• Research Organization: Office of Technology Assessment, U.S. Congress, Washington, DC
• OSTI ID: 5401434
• Report Number(s): CONF-820814-
• Conference Information: Journal Name: Proc., Intersoc. Energy Convers. Eng. Conf.; (United States) Journal Volume: 1
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330101* -- Internal Combustion Engines-- Spark-Ignition
AIRCRAFT
ALTITUDE
BRAKES
COMPUTERS
ELECTRONIC CIRCUITS
ENGINES
FUEL ECONOMY
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
FUEL-AIR RATIO
HEAT ENGINES
IGNITION SYSTEMS
IMPLEMENTATION
INTERNAL COMBUSTION ENGINES
MACHINE PARTS
MATHEMATICAL MODELS
MICROELECTRONIC CIRCUITS
MICROPROCESSORS
PERFORMANCE
PISTONS
SPARK IGNITION ENGINES
STEADY-STATE CONDITIONS
TIMING PROPERTIES
TORQUE