Experimental evaluation of rotary engine timing gear loads

Conference · Wed Jan 01 00:00:00 EST 1986

OSTI ID:5501534

Kulina, M R

The function of the timing gear of a rotary engine is to control the angular velocity of the rotor in relation to that of the crankshaft. The only load on the gear consists of the friction load due to the rotor seals, the torsional motion of the rotor and any torque developed on the rotor caused by uneven pressure distribution across the rotor flank. In the design of the gear and attachments an estimate of the loads must be made. In the case of an aircraft engine, knowing the actual loads and designing accordingly would result in the most weight effective configuration. A specially instrumented stationary gear of a Deere 0.67 liter SCORE III rotary engine was used to measure the peak torque during test stand operation. The results of the test confirm that rotor friction and torsional motion (due to drive line dynamics) produce the prime gear load below 70% design speed. At the higher engine speeds, a sub-system resonance of the rotor contributes significantly to the total load on the gear. The results of this test, together with the results of three earlier tests conducted on stationary gears are used to establish a design guide. This design guide relates the stationary gear load to crankshaft mean torque and engine displacement.

• OSTI ID: 5501534
• Report Number(s): CONF-860263-
• Resource Relation: Conference: Society of Automotive Engineers international congress and exposition, Detroit, MI, USA, 24 Feb 1986
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
GEARS
DYNAMIC LOADS
PERFORMANCE TESTING
ROTARY ENGINES
DESIGN
ANGULAR VELOCITY
FRICTION
LEADING ABSTRACT
MEETINGS
PRESSURE GRADIENTS
RESONANCE
ROTORS
TORQUE
TORSION
WEIGHT
ABSTRACTS
DOCUMENT TYPES
ENGINES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MACHINE PARTS
TESTING
VELOCITY
330104* - Internal Combustion Engines- Rotary