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Mechanical Industry Standard of the People's Republic of China
JB/T5140--91
Terms of Magneto
Published on 1991-06-26Www.bzxZ.net
Published by the Ministry of Machinery and Electronics Industry of the People's Republic of China
Implemented on 1992-07-01
Mechanical Industry Standard of the People's Republic of China
Terms of Magneto
1 Subject Content and Scope of Application
This standard specifies the terms and definitions of magneto. This standard applies to small gasoline engine magneto for various purposes (except aviation). 2 Terms
2.1 Magneto and its classification
2.1.1 Magneto
JB/T5140-91
A device that induces an electric potential on the wire as a power source through the rotation of a permanent magnetic field, and generates high voltage electricity for gasoline engine ignition with the help of the on-off action of a switch.
2.1.2 Flywheel magneto A magneto whose rotating parts also serve as the inertia flywheel of a gasoline engine. 2.1.3 Monoblock magneto A magneto whose shaft rotates and whose parts and components are assembled into a whole. 2.1.4
Internal rotor induction motor internalrotormagneto A motor whose rotating parts rotate inside the coil core. 2.1.5
Contact magneto breakermagneto
A magneto whose primary circuit is opened or closed by a contact. 2.1.6 Contactless magneto breakerlessmagneto A magneto whose primary circuit is opened or closed by an electronic switch. Capacitordischargemagneto 2.1.7
A magneto whose primary energy is stored in a capacitor. 2.1.8 Inductive magneto A magneto whose primary energy is stored in an induction coil. 2.2 Main systems and components
2.2.1 Rotor assembly
The rotating part is composed of shaft, magnet and guide plate, referred to as rotor 2.2.2
Stator assembly
The non-rotating part is composed of iron core, coil, breaker and shell, referred to as stator 2.2.3 Flywheel assembly is composed of magnet, sleeve (or without sleeve) and wheel, and it also serves as the inertia wheel of gasoline engine, referred to as flywheel. 2.2.4 Bedplate assembly is installed on the crankcase of gasoline engine, and the bottom plate component with various circuit diagrams (or breaker, capacitor) fixed on it is referred to as bottom plate. 2.2.5 Axle sleeve
The part connected to the flywheel wheel, and its inner hole is connected to the crankshaft of gasoline engine. 2.2.B Cambreakercam
Approved by the Ministry of Machinery and Electronics Industry on June 26, 1991 and implemented on July 1, 1992
JB/T5140-91
A wheel with a flange on the flywheel or the rotating shaft that can periodically open and close the breaker contacts. 2.2.7 Ignition coilignition coil
An induction coil that generates high voltage electricity.
2.2.7.1 Internal mounted ignition coilIgnition coil directly mounted on the base plate or stator. 2.2.7.2 External mounted ignition coil
An ignition coil that can be placed separately,
2.2.8 Lighting (charging) windinglighting (charging) windingA coil used as a power source for lighting (and battery charging). 2.2.9 Generating winding A coil used as the power supply for the primary winding of an external ignition coil. 2.2.10 Charging winding A coil used as the power supply for charging the capacitor (and also providing the trigger signal) in a capacitor discharge magneto. 2.2.11 Trigger winding A coil used as the power supply for charging the capacitor (and also providing the trigger signal) in a contactless magneto. 2.2.12 Capacitor discharge igniter An electronic component that uses a capacitor to charge and discharge, and an electronic switch to connect or disconnect the primary current of the ignition coil (the ignition coil can also be packaged together), referred to as an electronic igniter. 2.2.13 Inductive igniter An electronic component that uses an ignition coil to charge and discharge, and an electronic switch to connect or disconnect the primary current of the ignition coil (the ignition coil can also be packaged together).
2.2.14 Breaker contactbreaker
Part with contacts that intermittently connects and disconnects the primary current of the ignition coil. 2.2.15 Contact contact
A wear-resistant, high-melting-point metal sheet used to connect or disconnect the primary current of the ignition coil. 2.2.16 Breaker arm
contactbreakerarm
2.3 Main data
2.3.1 Secondary available voltage
Secandary available voltage
The minimum voltage available at the spark plug connection under specified conditions. Required spark plug voltagerequiredsparkptugvoltage2.3.2
The maximum voltage that must be applied to the spark plug connector for sparking between the spark plug electrodes under specified conditions. 2.3.3 Ignition voltage reserveignitionvoltagereserveThe difference between the secondary available voltage and the required voltage of the spark plug under specified conditions. 2.3.4 Secondary output voltage secondaryoutputvoltage Under specified conditions, the voltage available at the high voltage output end of the ignition circuit diagram 2.3.5 Secondary voltage rise time secondaryvoltagerisetime Under specified conditions, the time required for the secondary voltage to rise from a certain specified value to another value, expressed in circuits. Spark voltage sparkvoltage.
The voltage measured across the spark gap at a specified instant. 2.3.7
Spark current sparkcurrspt
The current flowing through the spark gap measured at a specified instant. 2.3.8 Spark duration sparkduration Under specified conditions, the time for a spark to jump across the spark gap, or the time for a current to flow through the spark gap. 2.3.9 Spark energy sparkenergy
JB/T5140—91
The energy released by each spark jumping across the spark gap. 2.3.10 Primary inductance primaryinductance The inductance of the primary winding of the ignition coil,
2.3.11 Primary voltage primaryvoltage The voltage across the primary winding under specified conditions. 2.3.12
Primary current primarycurrent
The current induced in the primary winding under specified conditions. 2.3.13 Primary maximum current maximumprimarycurrent The maximum current induced in the primary winding under specified conditions. 2.3.14 Interruption current In an inductive magnetic motor, the current flowing through the primary winding at the moment the breaker contacts open. 2.3.15 Primary induced electromotive force primaryinducedclectrometiveforce The electromotive force induced by the sudden change of magnetic flux caused by the disconnection or connection of the circuit in the primary winding of the ignition coil. 2.3.16 Charging voltage chargingvoltage In a capacitor magnetic motor, under specified conditions, the voltage across the charging line diagram when the charging coil charges the capacitor. 2.3.17
no-load charging voltageno-loadchargingvoltageIn a capacitor discharge type aldehyde motor, under specified conditions, the voltage across the charging coil when no load is connected. 2.3.18charging currentchargingcurrentIn a capacitor discharge type magnetic motor, under specified conditions, the current when the charging coil charges the capacitor. 2.3.19voltageacross thecapacitarIn a capacitor discharge type magnetic motor, under specified conditions, the voltage across the capacitor just before the capacitor is discharged. 2.3.20 Trigger voltage triggervoltage In a capacitor discharge magneto, under specified conditions, the voltage across the trigger coil when the trigger coil is connected to a load. 2.3.21 No-load trigger voltage no-load triggervoltage In a capacitor discharge magneto, under specified conditions, the voltage across the trigger coil when the trigger coil is not connected to a load. 2.3.22 Trigger current triggercurrent In a capacitor discharge magneto, under specified conditions, the output current of the trigger coil. 2.3.23 Stored energy
2.3.23.1 For inductive magneto
In the formula: W, the energy stored in the wire, J; L primary inductance, H;
I, power-off current, A.
2.3.23.2 For capacitor discharge magneto In the formula: W, the energy stored in the primary capacitor, J; C the capacitance of the primary capacitor. F
V. - The voltage across the device during discharge, V. 2.4 Working process and performance
2.4.1 Dwell angle dwellangle
The angle of rotation of the cam corresponding to the closing period of the breaker contact. 2.4.2 Position angle positionangle
JB/T5140-91
The angle that the rotor (or rotor) rotates from the neutral position to the opening of the breaker contact is called the "opening time position angle" of the whole motor, abbreviated as position angle.
openingangle
2.4.3 Opening angle
The angle of rotation of the cam corresponding to the opening period of the breaker contact. 2.4.4 Spark advance angle sparkadvanceangleThe crankshaft angle from the time when the magneto ignites to the time when the piston reaches the top dead center during the compression process of the engine. 2.4.5 Premature ignition The actual ignition advance angle is greater than the specified ignition advance angle. 2. 4.6 Retard ignition The actual ignition advance angle is less than the specified ignition advance angle. 2.4.7 Automatic spark advance angle adjustment The ignition advance angle is changed regularly with the given conditions by electrical or mechanical means. 2.4.8 Automatic advance angle device Automatic advance angle device The device that increases the ignition advance angle with the increase of gasoline engine speed within a certain speed range by using the high-speed function. 2.4.3 Initial advance speed The speed at which the automatic advance angle device starts to advance. 2.4.10 Final advance speed The speed at which the automatic advance angle device ends the advance. Starting speeder
Fstartingspeeder
Uses the release of the spring energy to accelerate the motor to produce sparks and reduce the ignition advance angle to facilitate the gasoline engine to start at a lower speed. 2.4.12
Off-clnwspeed
The speed at which the starting accelerator does not work. Retardangle
The angle between the normal ignition position of the motor and the ignition position after the starting accelerator acts. 2.4.14
Fire extinguisher
A device that uses the method of short-circuiting the primary coil (or capacitor charging coil) to extinguish the spark. 2.4.15Safety discharged deviceWhen the high-voltage output of the silicon motor is open-circuited during operation, the spark is allowed to jump within the specified safety range to protect the voltage and components from being damaged by high-voltage breakdown.
Contact gap
Contacting resistance of contacts2. 4. 17
When the breaker terminals are closed, the DC resistance between the two contacts measured as specified. 2.4.18
Contact spark
contactspark
The spark generated between the contacts when the breaker contacts are opened. Contactgalvanic cotrosion
Contact erosion
The phenomenon of breaker burning due to the action of sparks. Sparkgap
2.4.20 Spark gap
The distance that the spark jumps under specified conditions. 2.4.21 Polepitch of threepoint clectrode discharger refers to the distance between the two main electrodes of the three-pin discharger, 2.4.22
Ignition load
sparkload
expressed by the spark gap or three-pin distance under specified conditions, 4
2.4.23 Nominal voltage
nominalvoltage
Nominal voltage specified in JB/T514091
The nominal voltage specified in the lighting and battery charging system, 6V and 12V, 2.4.24 Lighting loadlightingload
The rated load connected to both ends of the lighting line diagram. 5 Lighting voltageIightingvoltage
Under specified conditions, the voltage at both ends of the lighting load. 2.4.26
No-load lighting voltageno-load lightingvoltageThe voltage across the lighting coil when it is not connected to a load under specified conditions. 2.4.27
Charging voltage (battery) chargingvoltage (battery)The voltage across the charging coil when it is charging a battery under specified conditions. No-load charging voltage (battery) no-loadchargingvoltage (battery)The voltage across the charging coil when it is not connected to a load under specified conditions. 2.4.29 Battery terminal voltage (when charging) valtageacrossbatteryThe DC voltage across the battery when it is charging a battery under specified conditions. Charging current (battery) chargingcurrent(battery) 2.4.30
The DC current when the charging coil is charging a battery under specified conditions. 2.4.31 Nominal speed nominalspeed
The speed of the magneto corresponding to the nominal speed of the gasoline engine. 2. 4.32
maximum speed
is the speed of the magneto corresponding to the maximum operating speed of the gasoline engine, and the three-pin distance distance guarantees 100% sparking under specified conditions. 2.4. 34
misfire
under specified conditions, the three-pin distance distance cannot reach 100% sparking. 2.4.35minimum continued sparking speed
minimum continued sparking speedunder specified conditions, the minimum speed of continuous sparking. 2.4.3range of continued sparking speedrange of continued sparking speedunder specified conditions, the minimum to maximum speed range of continuous sparking, maximum continued sparking speed2.4.37
the maximum speed of continuous sparking under specified conditions. 2.4.38 continued sparking performance The general term for the minimum continuous sparking speed, the continuous sparking speed range and the maximum continuous sparking speed. 2.5 Test
installed test
The test conducted on the magneto installed on the gasoline engine. 2.5.2
bench test bench test
The test conducted on the magneto installed on the test bench, 2.5.3 performance test performance test The test conducted to measure the performance of the magneto,
2.5.4 factory test factory test
The main performance test conducted on the magneto product on the test bench before leaving the factory. Type test type test
The test conducted on the new product or the magneto after major improvement for the purpose of finalization, or the regular test required for the magneto product in normal production according to regulations.
2.5.6 Acceptance test acceptancetest
JB/T5140—91
A test conducted by the manufacturer and the acceptance unit to jointly check whether the performance of the magnetic motor meets the technical requirements. 2.5.7
arbitration test arbitration
When the user and the manufacturer have a dispute over product quality issues and cannot resolve it, they need to ask an impartial third party to make a ruling.
2.5.8 Endurance test endurancetest
Under specified conditions, the magnetic motor runs for a long time to assess the stability of the performance indicators of the whole machine and the durability of the parts and components.
2.5.9 Intensification test intensification test A test conducted under enhanced conditions to shorten the test time. 2.5.10 Reliability test: a test conducted under specified conditions and time to assess the failure or damage of parts and components during the operation of the motor. 2.5.11
dielectric strength test of insulation: a test conducted under specified conditions to assess the withstand voltage insulation performance of the parts and components of the magnetic motor. 2.5.12 vibration and shock test: a test conducted to assess whether the performance indicators of the magnetic motor meet the requirements after the magnetic motor is subjected to vibration and shock under specified conditions. 2.5.13 high temperature test: a test conducted to assess whether the performance indicators of the magnetic motor meet the requirements after the magnetic motor is operated under specified conditions and high temperature. 2.5.14 low temperature test: a test conducted to assess whether the performance indicators of the magnetic motor meet the requirements after the magnetic motor is placed at low temperature under specified conditions. 2.5.15 moisture-resistant test: a test conducted to assess whether the performance indicators of the magnetic motor meet the requirements after the magnetic motor is placed in a specified humid environment. 2.5.16 Temperature shock test temperatureshocktest A test to assess whether the performance indicators of the magneto meet the requirements after the sudden shock of specified high and low temperatures. 2.5.17 Overspeed test overspeedtest
Under specified conditions, the magneto runs at overspeed to assess whether its performance indicators and parts and components meet the requirements. 2.5.18 Open circuit test opencircuittest A test to assess the insulation performance of each part of the magneto by isolating the three-pin spark during operation. 2.5.19 Interchangeability test exchangeabilitytest A test to assess whether the performance indicators of the magneto meet the requirements after the main detachable parts and components of the magneto are interchanged. 2.5.20 Temperature rise test temperaturerisetest A test to measure whether the temperature rise of each winding meets the requirements after the magneto runs under specified conditions. 2.5.21 drench test
Under specified conditions, the electronic igniter and inductive igniter are tested to see if their performance indicators meet the requirements after being drenched in water.
Additional Note:
This standard was proposed and managed by Tianjin Internal Combustion Engine Research Institute. This standard was drafted at the expense of Tianjin Internal Combustion Engine Research Institute. The main drafter of this standard is Li Jizi,
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