How to Adjust the Valve of Jinan 12v 190 Diesel Engine

Turn the valve left and right and adjust it to a proper position.

The valve may open early and close late. It can be seen from the indicator diagram that when the piston reaches the intake bottom dead center, the gas pressure in the cylinder is still lower than atmospheric pressure due to the intake suction, and air can still be sucked in under the action of atmospheric pressure. In addition, the inertia of intake airflow is large at this time. It can be seen that the late closing of the intake valve can increase the intake air volume.

Main advantages:

Opening the intake valve in advance can make the intake port have a larger channel area at the beginning, which can increase the air intake. At the end of the power stroke, the exhaust valve is opened, and the exhaust gas can be rushed out of the cylinder at a high speed by using the residual pressure of power work, and the exhaust volume accounts for about 50%.

Traditional diesel engines are characterized by good thermal efficiency and economy. Diesel engines use compressed air to raise the air temperature so that the air temperature exceeds the auto-ignition point of diesel. At this time, diesel, diesel spray and air are simultaneously injected and ignited. Therefore, diesel engines do not need an ignition system.

At the same time, the fuel supply system of diesel engine is relatively simple, so the reliability of diesel engine is better than that of gasoline engine. The high compression ratio of diesel engine is because it is not limited by deflagration and meets the needs of diesel spontaneous combustion. Thermal efficiency and economy are better than gasoline engines. At the same time, under the same power, the diesel engine has large torque and low speed at the maximum power, which is suitable for trucks.