What is the function of automobile distributor? What are the parts?

In the battery ignition system, the distributor and the circuit breaker are usually located on the same shaft and driven by the valve camshaft. It also has an ignition advance angle adjusting device and a capacitor. The breaking arm of the circuit breaker closes the contact with a spring leaf and opens the contact with a breaking cam, and the opening gap is about 0.30 ~ 0.45 mm. The number of protrusions of the power closing cam is the same as that of the cylinders. When the contact is opened, the distributor arm of the distributor is just aligned with the corresponding side electrode, and the induced high-voltage electricity is transmitted from the secondary coil to the spark plug of the corresponding cylinder through the distributor arm, the side electrode and the high-voltage line. When gasoline with different octane numbers is used, the initial ignition advance angle can be adjusted manually. When the speed of internal combustion engine rises, the centrifugal ignition advance angle adjusting device ignites in advance, otherwise it delays ignition. When the load of the internal combustion engine decreases, the vacuum degree in the intake manifold increases and is transmitted to the vacuum ignition advance angle adjusting device through the connecting pipe to advance the ignition. This adjustment can ensure that the internal combustion engine runs at a suitable ignition advance angle. In the magneto ignition system, the circuit breaker is usually made on the magneto to form a whole.