Ignition adjustment

The engine of the car consists of four systems and two mechanisms. The ignition system is necessary for ignition of a fuel mix in the engine. All the elements of the system provide a reliable ignition, based on the principle of the order of the cylinders of the engine of the car. Let's consider more in detail

With the engine running, for the most complete combustion, the fuel mixture is ignited by a candle near the end of the compression stroke. It is important that the ignition adjustment is correctly set. Since the crankshaft and camshafts of the engine are clearly synchronized, the ignition of the charge occurs at a strictly necessary point in time. That is, when the crankshaft passes through a certain point, the mixture is ignited. This occurs cyclically with the alternating strokes of the running motor. This point is the moment of ignition.

The system of ignition of the mixture works quite reliably. But in connection with the wear of the main elements, the ignition adjustment is periodically necessary. This operation is carried out in the event that there are characteristic malfunctions in the engine operation. Increasing the toxicity of exhaust gases, unstable operation of the motor - all these are the prerequisites for the disruption of the normal operation of the system.

Adjustment of ignition is made both at the working engine, and at the muffled. For adjustment there is a special tool and equipment not always available in the ordinary citizen's garage. Therefore, experienced drivers regulate the moment of ignition while the engine is running. This is not very difficult. It is important to learn how to hear and listen to the engine, he will tell you how to set the ignition timing ahead.

Attention! The voltage in the ignition system reaches 12000-24000V. This is very much. Therefore, without acute necessity and not being sure of your safety, do not touch the ignition system elements, especially the high-voltage spark plug wires.

It is important to understand that the magnitude of the angle depends on many indicators. The burning rate, speed and load on the motor correct to a certain extent the angle. Later, the ignition is characterized by a large lead with a more moderate rotation of the motor shaft.

All the work of the engine, as we have already seen, is synchronized. It has been experimentally established that it is practically impossible to achieve the most complete combustion of the mixture under real operating conditions of the motor. Designers from around the world are struggling with this problem. To this they are pushed by ecology. Simply put, the more complete the fuel burns in the cylinder, the less harmful substances get into the atmosphere and, accordingly, into our respiratory organs.

To ensure these conditions, the mixture in the motor must be ignited a little before the piston approaches the value of the top dead center. In this connection, the concept of the ignition timing is introduced . This is the angle of rotation of the crankshaft from the moment of the spark in the candle until the piston approaches its top dead center.

Of course, the ignition adjustment has its drawbacks. And, oddly enough, this is the very concept of adjustment. This is an additional technological operation that requires certain knowledge, skills and experience. If adjustment is carried out, then there is a high probability of malfunctions in the system due to the presence of many mechanical parts. Therefore, modern cars are increasingly equipped with more reliable unattended systems, eliminating this drawback.

And the last point: if you allow one of the systems that are responsible for the advance of ignition, did not work, then the dynamics of the car acceleration are largely lost, and the consumption of gasoline itself also increases.