1、. SAE ARPx484A 71 = 8357340 0028333 2 H a &I: AEROSPACE Societv of Automotive Enaineers, Inc. SPACE RECOMMENDED PRACTICE TWO PENNSYLVANIA PLAZA, NEW YORK, N.Y. 10001 SPARK IGNITER GAP TYPES HS-/ 4 ARP 484A Issued 11-15-57 Revised 7-1-71 - )ASH (0. -1 -2 -3 -4 TITLE IGNITER-SPARK HIGH VOLTAGE AIR GAP
2、 IGNITER-SPARK HIGH VOLTAGE NON-SHUNTE1 SURFACE GAP IGNITER-SPARK HIGH VOLTAGE AIR-SURFACE GAP TGNIT ER-SPARK LOW VOLTAGE SHUNTED SURFACE DISCHARGE GAP TYPICAL GAP CONFIGURATION OUTER SHELL INSULATOR CENTER ELECTRODE GROUND ELECTRODE INSULATOR OUTER SHELL (GROUND ELECTRODE) CENTER ELECTRODE INSULATO
3、R OUTER SHELL (GROUND ELECTRODE) % CENTER ELECTRODE INSULATOR OUTER SHELL (GROUND ELECTRODE) SURFACE DISCHARGE (i. e. , Semiconductor)MATERiAL CENTER ELECTRODE AN IGNITER MAY BE CLASSIFIED AS TO REQUIREMENTS AS FOLLOWS: A. THE MAXIMUM SPARK IGNITER BREAKDOWN VOLTAGE EXPRESSED IN KILO-VOLTS. (APPLICA
4、TION REQUIREMENTS WILL DETERMINE THE VOLTAGE DIFFERENTIAL BE- TWEEN THE SPARK IGNITER BREAKDOWN VOLTAGE AND THE VOLTAGE AVAILABLE FROM THE POmR SOURCE. ) THE STORED ENERGY OF THE IGNITION SOURCE EXPRESSED IN JOULES AND/OR THE SPARK ENERGY AT THE IGNITER GAP EXPRESSED IN JOULES. THE SPARK REPETITION
5、RATE OF THE IGNITION SOURCE EXPRESSED IN SPARKS PER SECOND AT THE NOMINAL OPERATING VOLTAGE AND FREQUENCY. THE REQUIRED SPARKING TIME IN THE ENGINE EXPRESSED IN HOURS. 6 B. C. D. - - = Copyright 1971 by Sodety of Automotive Engineers, Inc. Printed in U.S.A. ARP 48PA I -2- NOTE: 1. ALL VALUES ABOVE T
6、O BE EXPRESSED IN DECIMALS TO THE NEAREST TENTH. 2. ONLY ONE TYPE OF GAP IS SHOWN FOR EACH DASH NvBER, BUT THE3 DOES NOT PRECLUDE THE USE OF OTHER GAP CON- FIGURATIONS MEETING THE DESCRIPTION OF THE TITLE. IF DESIRED, THE IGNITER REQUIREMENTS MAY BE LISTED AS AN ABBREVIATED SERIES OF NUMBERS IN THE ORDER GWEN ABOVE. AS AN EXAMPLE: 1.5/2.3/6.0/2.5. PREPAREI) BY SUBCOMMITTEE E-30A, AIRCRAFT GAS TURBINE and RAM-JET ENGINE, of SAE COMMITTEE E-30, IGNITION RESEARCH
