What's the pressure on the cylinder
Generally, the working pressure of the cylinder is around 0. 6 mpa, or 6 kg/cm2. If there is an imbalance in the pressure of the cylinders, there will be problems with the explosion of the vehicle's engine and the lack of its power, and serious problems will even cause the engine to die directly。
On the cylinder:
The cylinders consist of two main categories of straight-line and round-twirling, with straight-line cylinders divided into single-acting cylinders, two-action cylinders, membrane-type cylinders and double-shock cylinders。
In general, the greater the number of cylinders, the smoother the engines run and the greater the power generated. As of august 2019, most of the vehicles in the market were of three, four and six, but also of five, eight and ten。
Test conditions for tank pressure:
1. Tests shall be carried out under conditions that ensure sufficient capacity of the vehicle's cylinders, otherwise they may cause the engine to turn too low and thus the manual vehicle to shut down。
2. To keep the engine temperature in a normal state which, if the engine temperature is too high, increases the pressure in the engine cylinder。
3. The gas tank pressure is measured by removing the vehicle's fuel pump insurance, or by inundation, resulting in low pressure in the tank。
When measuring the pressure of the cylinders, the spark plugs need to be removed and if the plugs are not removed, they will be measured directly, resulting in the measurement pressure of the cylinders being greater than the actual pressure。
Testing methods for tank pressure
The gas tank pressure test is carried out according to the following steps. Step 1: installation of a gas tank pressure table on the engine。
(b) second: heat the car first, keep the engine at normal temperatures and keep the cooling fluid between 85 and 95 degrees。
Step three: dismantling all spark plugs or oil sprayers in the vehicle and ironing the high-pressure line。
Step four: step on the gas door is full of gas。
Step five: wrest the screwdriver on the spark plug. A cone of rubber from the gas tank pressure table can also be pressurized within the spark hole of the test tank。
Step 6: launcher starts about two seconds, the pointer determines, reads the pressure value, then press the one-way valve (one-way valve) button, and exerts the exhaust pressure and returns the pointer。
In this way, it is important to note that each tank is measured many times and twice, with the best average。
In addition, at the second measurement, a small amount of engine oil can be injected by spark plugs, followed by gas tank pressure measurements. The amount of oil injected was 20-30 ml。
If the compressive pressure of the cylinder is the same as that of the pump, the leak of the gas door can be judged。
