When brazing on the top of the flanging, the welding angle is difficult to guarantee, and there is no reinforcement plate under the tube sheet. Therefore, due to vibration and other reasons in the loc...
Tests on locomotives with crankcase explosions and further expansion to all ND2 locomotives in the entire section show that there is a higher pressure in the crankcase when the diesel engine is...
The ND2 locomotive is an early diesel locomotive imported from Romania in the early 1970s. In the design of its diesel engine crankcase explosion-proof device, it is required that when the temp...
Modern power electronics technology. The defense industry uses electromagnetic fuel pumps to improve the cold start of vehicles. The cold start of vehicles has always been a problem that many d...
Traditional radiators have good heat dissipation performance, but they also have serious shortcomings. First of all, they are bulky. At present, automobile manufacturers all over the world are trying ...
Geometrical size detection In order to understand the size of the broken part of the part, the semi-finished product after hot bending was tested. The test result: the diameter of the bend of t...
Analyze and simulate the flow and temperature on the surface of the heat sink. The fin radiator is composed of independent parallel oil flow channels, and each channel is composed of three connected s...
The mechanical efficiency of the motor is equal to the ratio of the actual output torque to the theoretical torque in its operating state. The empirical formula for the mechanical efficiency of...
The current layout of the radiator, fan and partition in the air intake compartment in the engine compartment is unreasonable. For example, there is a vortex in front of the radiator. L1 is not...
The swash plate engine belongs to the external combustion engine. Because of the different working mechanism of the fuel combustion in the internal combustion engine to push the piston to do wo...
The performance of automobile radiator is the main factor that affects the cooling water temperature of automobile engine. There are two main materials used for car radiators: aluminum and copper. The...
I learned from the dealer that after some users installed a sprinkler on the water tank or replaced it with a larger water tank, the flat road operating temperature of the vehicle was maintaine...
Increase the heat dissipation area of the radiator by thickening the core size of the radiator. The second point: Change the radiator from the original three rows of tubes to four rows of tub...
The heat dissipation capacity of the cooling system of the traction converter directly affects whether the converter can work safely and stably for a long time. For the cooling system of the tr...
ECU is tested in cooling water with a flow of 600L/h. Test test. Put the ECU into a high temperature test box, power on and knock the valve to work. Enter 45℃ cooling water, and record the chan...