What are the components of the gasoline engine's ignition system?
Publish Time: 2025-01-13
The gasoline engine's ignition system is a key component to ensure the normal operation of the engine. It is mainly composed of components such as batteries, generators, distributors, ignition coils and spark plugs, which work together to ignite the combustible mixture and push the piston to move, thereby generating power.One of the core components of the ignition system is the ignition coil, which is equivalent to a step-up transformer. The ignition coil consists of a primary coil and a secondary coil. The primary coil has a thick wire and a few turns, while the secondary coil has a thin wire and a large number of turns. When current passes through the primary coil, high voltage electricity is generated in the secondary coil, which is enough to generate an electric spark between the two electrodes of the spark plug.The distributor also plays an important role in the ignition system. It is mainly composed of a circuit breaker, a distributor, a capacitor and an ignition advance adjustment device. The main task of the distributor is to distribute the high voltage electricity from the ignition coil to the correct cylinder. When the rotor of the distributor rotates, it passes through the contacts of each cylinder in turn. When the tip of the rotor approaches the contact, the high-voltage pulse generated by the coil will break through the gap between them (although they are not really in contact), and then continue to pass through the spark plug wire and pass to the spark plug of the corresponding cylinder.The spark plug is a key component for igniting the combustible mixture. Its function is to discharge the pulsed high-voltage electricity sent by the high-voltage wire, break through the air between the two electrodes of the spark plug, generate electric sparks, and ignite the mixed gas in the cylinder. High-performance engines require high-energy stable sparks, evenly mixed mixtures, and high compression ratios, and the performance of the spark plug directly affects the realization of these conditions.The ignition controller and the ignition signal generator are also important components of the ignition system. According to the command signal sent by the microcomputer, the ignition controller controls the on and off of the primary winding circuit of the ignition coil by turning on and off the internal high-power triode, thereby generating high voltage electricity. The ignition signal generator is a sensor that converts the angle of the crankshaft of the car engine or the position of the piston in the cylinder into a corresponding electrical pulse signal, which is sent to the electronic controller to control the on and off of the primary circuit and generate an ignition signal.In summary, the ignition system of a gasoline engine is a complex and sophisticated system. The various components work closely together to complete the task of igniting the combustible mixture. By understanding the working principle and component composition of the ignition system, we can better maintain and optimize the car engine and ensure the normal operation and driving experience of the car.
