Car wires are the core parts of the engine ignition system, as it converts low voltage power into high voltage power, so that the combustible gas in the gas tank will be punctured and ignited, the engine will function properly and the car will start normally. And what is the reason why friends often complain about burning wires in cars? It also has to start with the principle of a lit wire。
It's how you lit the wire
Fire wires are transformers that transform 12v low voltage into 15-20kv high voltage. But unlike ordinary transformers, it works intermittently, while ordinary transformers work continuously。
Firing circles are usually divided into two-cylinders and independents. The two-cylinder type is the combination of two cylinders with a fire wire ring and two high-pressure output ends linked to the spark plugs, while lighting them. For example, a jedda car is a double-bard wire ring. The plugs consist of four feet, two of which are for foot control and separate engine control units; one for power supply end and 12v power supply; and one for ground control when foot control signal is entered and high pressure end output of high voltage power is used to ignite spark plugs in four cylinders。
The stand-alone ignition ring is each cylinder fitted with a ignition ring, which is installed directly on the top of the spark plug. For example, a mercedes-c car uses a stand-alone ignition ring. A magnetic field is created when a lower voltage is attached to a primary circuit of coarse copper silk. At the time of ignition, primary currents were interrupted, causing a sudden weakening of the magnetic field of the secondary ring, generating ignition voltage on the secondary circle, and causing high voltage in the secondary circuits, which produced electric sparks through the spark plugs, which ignited the hybrid gas, as the subconvene was more numerous than the primary circuit。
In short, the ignition ring consists of the main circle, the secondary circle, the magnetic core, the switch triode and other aids. The vials are charged to the main loop, the secondary loop is plugged in and the tripolar tube is responsible for the switch. Charge volts and engines turn to control charge voltage to ensure that each charge is consistent。
Why did the fuse burn
1. Generator problem
The power of the generators was too high, so the wires were overloaded. However, at the same time, the light bulbs are prone to depletion, so the quality of the parts may also be a problem. For reasons of safety, power generation can be detected first。
2. Too much gap between spark plugs
Change the spark plug。
3. Poor quality of gasoline
Four. It's wrong to compress
5. Computer panel failure
Send it to the car repair plant and check it out. If there is no problem, there is a problem with the car driver。
Power voltage unstable
Seven, high voltage line
8. Secondary shortcuts
9. Overheating or a problem with the fuse
Let's try a lighter ring。
10. High pressure wave problem
11. The proliferation of firearms is poorly integrated
In this case, try to check the ignition ring
If it's a stand-alone ignition ring, it's considered to be a coil failure when there's a glide, a lack of power, a poor acceleration, etc
Dismantling the spark plugs and observing the burning of the electrodes determine which cylinders are abnormal and which ones are black or oily. Further determination of the need to switch a malfunctioned wire ring to another one is possible if the failure passes. At the same time, it is necessary to check whether there is a breakout in the connection to the ignition ring。
2. Double-cylinder ignition wires, if they fail, can be shown to be non-startable or non-startable motors, impurity to shut down the fire, and poor acceleration
An electrical barrier between the high-pressure end of the ignition ring is measured using a single-use watch, which should normally have some resistance. If the barrier is inexhaustible, it means that the secondary circuit is broken. If there is no failure, check whether the connection between the ignition ring and the connection line and the control computer is broken。
These are the principles of the ignition ring and the usual detection and failure resolution methods. Next time there's an engine that doesn't burn, you can try to fix it yourself。
Note: all the graphs in the article reproduce pictures on the internet, torts are deleted
