The ignition system functions
The function of the engine ignition system is as follows:To increase the supply voltage (either from a battery or magneto) of 6 or 12 volts to 30,000 volts. High voltage is generated to allow the flow jumps to the next ignition relief plug electrodes to ..create fireworks in order to sprinkle a mixture of air to burn fuel during the power stroke
Type-type of ignition based-system:
Basic ignition system is divided into two, namely:
Magneto ignition systemBattery ignition system
Magneto ignition system
Key:The contact point
Cam
Condenser
Spark plugs
Magnet
Main Loop
Loop Duplicate
Cam
Condenser
Spark plugs
Magnet
Main Loop
Loop Duplicate
Referring to the diagram A
During the contact point of the primary circuit is completely closed. When the flywheel (which has a magnet) rotates, the magnetic field will be cut off the main loop. Current will flow in the main circuit and the main loop into electro magnet. The magnetic field is generated in the main loop.
Referring to Figure B
Flywheel will continue to rotate, then the contact point will be open due to the action cam. When the contact points open, the primary circuit failure and is no longer current can flow to it. Magnetic field is in the main loop will collapse and cause a high pressure induced voltage of the coil duplicate.
Voltage high pressure will flow into the spark plug to produce fireworks spark order to burn the fuel air mixture during the power stroke.
Condenser is to help accelerate the collapse of the magnetic field in the main loop.The faster the magnetic field collapses in the main loop, the higher the voltage induced in the coil duplicate.
Battery ignition system
Key:batteryLoop DuplicateMain LoopCamThe contact pointCondenserSpark plugs
During the closed contacts
During the contact points are closed, the main circuit is complete. Current will flow from the battery to the main loop (in the ignition lock) next to the contact point and down to earth.
The main loop of the electro magnet and the magnetic field also occurs in the main loop.
When the contact point is opened by a cam
The cam will be around to cause the contact points open. With these circuits will be disconnected. No more current flows in the circuit and causing the magnetic field is in the main loop to collapse.
When the magnetic field collapses, then the high voltage induced in the coil duplicate.High-voltage stress will go to the rotor arm inside the distributor. Rotor arm is currently opposed to the source side of the distributor cap to allow flow through it and jump directly to the spark plug to produce fireworks spark
Together with the installation of the distributor rotor arm responsible for distributing the high voltage at each spark plug in the relay, or take turns in the order of combustion, such as 1,3,4, 2, or 1,2,4,3.
During the contact points are closed, the main circuit is complete. Current will flow from the battery to the main loop (in the ignition lock) next to the contact point and down to earth.
The main loop of the electro magnet and the magnetic field also occurs in the main loop.
When the contact point is opened by a cam
The cam will be around to cause the contact points open. With these circuits will be disconnected. No more current flows in the circuit and causing the magnetic field is in the main loop to collapse.
When the magnetic field collapses, then the high voltage induced in the coil duplicate.High-voltage stress will go to the rotor arm inside the distributor. Rotor arm is currently opposed to the source side of the distributor cap to allow flow through it and jump directly to the spark plug to produce fireworks spark
Together with the installation of the distributor rotor arm responsible for distributing the high voltage at each spark plug in the relay, or take turns in the order of combustion, such as 1,3,4, 2, or 1,2,4,3.
Ignition system parts
Important parts of ignition system is like, ignition coil, the contact points, condensers, distributor and spark plug.
ignition coil
Important parts of ignition system is like, ignition coil, the contact points, condensers, distributor and spark plug.
ignition coil
Primary Source
Duplicate source
Loop Duplicate
Main Loop
Oil Cooler
Metal Central Core
Ignition loop serves as a raised voltage transformer supplies the high voltage can produce a spark fireworks
It consists of a main loop and duplicates the loop, which contains the main loop 150 to 300 turns of wire dimeter is 0.4 to 1.0mm. While loop contains duplicate with 15,000 to 30.000 turns of wire dimeter is 0.5 to 0.8mm. Please refer to Figure 10.4.1
The resistance to duplicate the loop is about 6 Kilo Kilo Ohm to 14 Ohm.
It consists of a main loop and duplicates the loop, which contains the main loop 150 to 300 turns of wire dimeter is 0.4 to 1.0mm. While loop contains duplicate with 15,000 to 30.000 turns of wire dimeter is 0.5 to 0.8mm. Please refer to Figure 10.4.1
The resistance to duplicate the loop is about 6 Kilo Kilo Ohm to 14 Ohm.
The contact point
The point contacts used to connect the main circuit and deciding on the ignition system, the higher the voltage doubler can be induced in the coil. It is made of hard metal and resistant to erosion as it opened and closed thousands of times per minute.
Long enough time to close the contact point is very necessary, in order to move a lot of current in the main loop and build a strong uratdaya. The duration of the contact points are closed is called the ANGLE OF LODGE. To ensure that the contact point of the period covered in the right situation, adjustments must be done correctly its filler.
Long enough time to close the contact point is very necessary, in order to move a lot of current in the main loop and build a strong uratdaya. The duration of the contact points are closed is called the ANGLE OF LODGE. To ensure that the contact point of the period covered in the right situation, adjustments must be done correctly its filler.
Condenser
Condenser installed in a way parallel to the contact point, it serves to:
Prevent the occurrence of fireworks at the contact point when the contact points open.Further elevate the high voltage of the coil duplicate.Prevent the contact point of the fire.
Distributors and accessories
The duties of the distributor in the ignition system are:
Placing the contact point, the cam, the condenser, the initial firing unit, cable and high-pressure rotor.Distribute the high voltage from the coil to be sent to plug duplicate penyucuh according to predetermined rules of combustion.Act to control the flame when the engine speed according to changing conditions.
Prevent the occurrence of fireworks at the contact point when the contact points open.Further elevate the high voltage of the coil duplicate.Prevent the contact point of the fire.
Distributors and accessories
The duties of the distributor in the ignition system are:
Placing the contact point, the cam, the condenser, the initial firing unit, cable and high-pressure rotor.Distribute the high voltage from the coil to be sent to plug duplicate penyucuh according to predetermined rules of combustion.Act to control the flame when the engine speed according to changing conditions.
initial unit firing centrifugal force
Indicators:
Pin WeightPivot PinPlate Controller balancedSpring reverseCam sitesBallastPreliminary Corner
Pin WeightPivot PinPlate Controller balancedSpring reverseCam sitesBallastPreliminary Corner
a cam mounted on the distributor shaft by means of floats (do not unite to death).Installation of the cam is in place to enable the load to the cam shaft rotates overstayed forward as fast. With this, when the engine speed sesendol contacts will open more quickly to control the production of fireworks.
Initial vacuum unit firing
the contact point mounted on a base that can be moved, move it. This site is connected to a diaphragm chamber and is connected by hose to the bottom of the carburetor. With the contacts open and the flames were beginning to advanced.
Spark plugs
Spark plug electrodes to provide relief to the middle and edges, to allow the high voltage jump through loops and duplicate sparking fireworks to ignite the fuel air mixture during the power stroke.
Source
Insulation
Skin
gasket
yarn
middle electrode
electrode side
relief
The center electrode insulator
Fields of heat (Heat Range)
thermal field on the spark plug insulator nose is referred to the center electrode.Increasing the length of the insulation, the heat that occurs in the middle of late to cooled electrodes. But this kind of spark plug type dimanakan hot, so instead
The ignition system damage and the reasons
describes a number of reasons for damage caused in the ignition system.
Damage Type | Causes of damage |
No fireworks at the spark plug | Short-circuit or open the main circuit is the circuit duplicates The contact point defects, dirty or not openMain circuit or a duplicate is water (wet) Spark plug is too big relief |
Fireworks at the spark plug is weak | Connections to the circuit is dirty or clean Point contacts are dirty or defectiveDefective or faulty ignition loop High resistance at high pressure cable |
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