1、SAE AIRg778A b m 83573LiO 0007228 W w-35+/ 9 I 1 AIR 978A Issued 8-30-65 2PUK I 485 Lexington Ave., New York, N.Y. 10017 Revised 3-31-67 SOCIETY OF AUTOMOTIVE ENGINEERS, Inc. DIAGRAMS AND CHARACTERISTICS OF TYPICAL PISTON ENGINE MAGNETO IGNITION SYSTEMS A HIGH TENSION MAGNETO 0- -. r-r- -1 MHT: DHT:
2、 HHT: C: B: T: PR SEC: Lc: P: S: LEGEND MAGNETO-HIGH TENSION DISTRIBUTOR-HIGH TENSION HARNESS -HIGH TENSION BREAKER CA PAC IT OR BREAKER PRIMARY WINDING SECONDARY WINDING LEAD CAPACITY SPARK PLUG SHUNT RESISTANCE TRANSFORMER-HIGH TENSION 1 LOY TENSION MAGNETO . HIGH FREQUENCY MAGNETO I MLT: DLT: HLT
3、 C: B: MPR: T: PR: SEC: L: LC: P: s: MAGNETO -LOW TENSION DISTRIBUTOR-LOW TENSION HARNESS-LOW TENSION BEE AKER-C AP AC IT OR BREAKER TRANSFORMER PRIMARY WINDING SECONDARY WINDING LEAD CAPACITY SPARK PLUG SHUNT RESISTANCE MAGNETO-PRWIARY WINDING LEADS -HIGH TENSION MLT: DLT: HLT: cc: L: THF: C: B: M
4、PR: TC: PR: SEC: cs: G: LC: PR: SEC: P: S: MAGNETO -LOW TENSION DISTRIBUTOR-LOW TENSION HARNESS-LOW TENSION CONVERTER TRANSFORMER COIL ASSEMBLY LEADS-INTERMEDIATE VOLTAGE TRANSFORMER-HIGH FREQUENCY AK SPARK PLUG ASSEMBLY BREAKER-C APAC ITOR BREAKER CONVERTER TRANSFORMER PRIMARY WINDING SECONDARY WIN
5、DING SPARK GAP LEAD -CONNECTOR CAPACITY PRIMARY WINDING SECONDARY WINDING SPARK PLUG SHUNT RESISTANCE MAGNETO-PRIMARY WINDING C APACITOR-STORAGE (This document is a revision of and supersedes AIR 78, issued 11-15-59 .) 2 printei inU.S.A. . Copyright 1967 by Society of Automotive Engneerc, inc. i,- -
6、 SAE R*978A hi 9 8357340 0009229 h . BREAKERLESS HIGH FREQUENCY LOW TENSION MLT: DLT: ,. HLT: THF: i MBT: MPG: MPR: D: SCR: VRS: cs: R: T W: PR: SEC: P: S: MAGNETO-LO W TENSION DISTRIBUTOR-LOW TENSION HARNESS-LOW TENSION TRANSFORMER-HIGH FREQUENCY AND SPARK PLUG ASSEMBLY MODULE-BIAS AND TRIGGER MODU
7、LE-PULSE GENERATOR MAGNETO-PRIMARY WINDING RECTIFIER-FULL WAVE CONTROLLED RECTIFIER VOLTAGE REGULATOR-STORAGE C APACITOR-STORAGE RESISTOR TIMING WHEEL PRIMARY WINDING SECONDARY WINDING SPARK PLUG SHUNT RESISTOR - BREAKERLESS LOW TENSION,-+ - - MLT: DLT: HLT: T: L: P: MBT: MPG: MPR: D: SCR: VRS : cs:
8、 R: TW PR: SEC: S: Lc: MAGNETO-LOW TENSION DISTRIBUTOR HARNESS-LO W TENSION TRANSFORMER SPARK PLUG LEADS-HIGH TENSION MODULE-BIAS AND TRIGGER MODULE-PULSE GENERATOR MAGNETO PRWARY WINDING RECTEIER FULL WAVE CONTROL RECTIFIER VOLTAGE REGULATOR-STORAGE CAPACITOR-STORAGE RESISTANCE TIMING WHEEL PRIMARY
9、 WINDING SECONDARY WINDING SHUNT RESISTANCE LEAD CAPACITANCE TYPICAL DATA , NOTE: THE FOLLOWING DATA ARE TO BE USED FOR REFERENCE PURPOSE ONLY AND NOT BE CONSIDERED AS A DESIGN STANDARD Shunt Load Volts Per Frequency Resistance Capacity Microsecond Kilo- - Diam TyEe Kilovolts ohms PF (approx) cycles
10、 - A High Tension 25 Infinity 150 85 1-2 Magneto 6 100,000 d Low Tension 20 Infinity 50 250 4-5 Magneto 6 50,000 9 Magneto 6 5,000 C High Frequency 16 Infinity 20 30,000 500 D Breakerless 18 Infinity 20 3,000 High Frequency . 6 18,000 LOV Tension E Breakerless 18 Infinity Low Tensio? 6 40,000 50 775 PREPARED BY SUBCOMMITTEE E-30B, AIRCRAFT PISTON ENGINE IGNITION, OF COMMITTEE E-30, IGNITION RESEARCH 40 12
