FIELD: ignition systems for gas-turbine engines of aircraft and overland vehicles.
SUBSTANCE: proposed spark plug has body accommodating central electrode and side electrode in the form of bushing with central cylindrical passage, as well as shell enclosing this body to form cooling area provided with deflector and outlet port. Side-electrode walls have holes tangential to side surface of its passage which communicate at inlet with air space between body and shell. There may be 1 to 5 holes. Ratio of cross-sectional area of central cylindrical passage to total area of tangential holes is 30 to 250. Such design of spark plug provides for eliminating fuel carbonization and soot accumulation on inner surface of side-electrode cylindrical passage.
EFFECT: enhanced reliability and improved starting characteristics of spark plug.
1 cl, 2 dwg
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