Global HS code classification standards

List of contents of this article:

• 1,Global HS code classification standards The difference between large pump truck and electric injection vehicle
• 2. WeiHow to adjust the pressure of the large pump of the wood engine
• 3, 4108 What should I do if the refueling response of the large pump engine is slow?
• 4, Which is more powerful, high-pressure common rail or large pump?

The difference between large pump trucks and electric injection vehicles

1. The fuel supply methods of large pump trucks and electric injection vehicles is different. The fuel supply system of large pump trucks is mechanical and not controlled by ecu. The fuel injection system of the electric injection vehicle is electronic, and this fuel injection system is controlled by ecu. Therefore, electric injection vehicles are more fuel-efficient and have lower exhaust emissions.

2. The oil supply method of large pump trucks is different from that of electric injection trucks. The oil supply system of large pump trucks is mechanical and not controlled by ecu. The fuel injection system of electric locomotives is electronic and controlled by ecu. Therefore, electric injection vehicles have better fuel economy and lower exhaust emissions.

3. The fuel supply methods of large pump trucks and electric injection trucks are different.The fuel supply system of the large pump truck is mechanical and is not regulated by the ECU; while the fuel injection system of the electric injection truck is electronic and regulated by the ECU. Therefore, the fuel of electric injection vehicles is more reasonable and the exhaust emissions are also lower.

4. Large pump trucks are convenient to maintain and cheap; electric injection trucks are more advanced than large pump trucks. Electric injection is a kind of engine, which is very different from a carburetor engine, and the operation method is also quite different. When starting the electric injection engine (including the start of the cold car), there is generally no need to step on the accelerator.

How to adjust the pressure of Weichai engine large pump

1. Multi-cylinder engine adjustment method: there is a scale ruler 0 and positive on the crankshaft pulley When the gear-type pointer is flushed. 2: It's okay if you only look at the rocker arm, that is, when a cylinder compresses the stop point, the exhaust valve of the 4 cylinder has not been closed, and the intake valve has just been opened, { that is, the valve overlap}.

2. Use two dry batteries in series with the storage battery and ammeter, and connect it to the battery junction pole of the regulator. Start the engine and gradually increase the speed. Observe the pointer of the ammeter when the voltage resulator is working.

3. [Pacific Automobile Network] First of all, disassemble the oil pan shell. There is a long screw head called a pressure relief valve next to it. Twist the screw inside with a steel piece. To loosen it to reduce the pressure, and to tighten it to increase the pressure, so that the oil pressure of Weichai can be adjusted. Depending on the type of engine, the specific position is different.

4. The amount of oil supply is adjusted from the high-pressure oil pump. Adjust its rack to increase or decrease the amount of oil supply. There should be adjustment bolts on the fuselage, but it is recommended that you do not adjust it by yourself, but find a professional to do it.

4108 What should I do if the refueling response of the large pump engine is slow?

1. Solution: First, check whether there are objects that are not fixed, easy to roll and make sounds in the trunk or rear seats of the car, and exclude some items that are not fixed and make noise.

2. If you confirm that there is no problem with the engine, it is the oil pump problem. Before checking the oil pump, you need to confirm that the diesel grid and small filter on the oil road will not be blocked.

3. It may be a psychological effect, it may be that the engine oil is not good, and it is also possible that the new car is driven to a certain mileage, and the sealing will decrease.

4. Maybe it's too late. 2 Supercharged air leakage. 3. There is something wrong with the fuel injection pump.

5. Hello, your engine should not be an electric injection engine, right? If only the big trottle is unstable, it means that there is no problem with the mechanical parts of the engine. It is recommended to check the high-pressure oil pump and fuel injector.

Which is more powerful, high-pressure common rail or large pump?

1. Which system is more powerful depends on the specific design and application.In general, high-pressure common rail systems can achieve higher power output and lower emission levels due to their advanced injection technology, so they are more common in modern diesel engines.

2. It depends on where you get to know it. If you want to save money, of course, a large pump is better. If you want high-performance and high-tech, of course, it is a high-pressure common rail.

3. High-voltage common rail is strong. The VE pump system is relatively simple, the high-pressure common rail system is much more complex, and the control accuracy is high, so the high-pressure common rail is strong. High-pressure common rail technology refers to an oil supply method that completely separates the generation of injection pressure and the injection process in a closed-loop system composed of high-pressure oil pumps, pressure sensors and ECUs.

4. The monomer pump is strong. Because the working principle of the common rail pump is to connect the pump body in series with other pump bodies, the power will be greatly reduced, which is not as good as the monomer pump, so the monomer pump is more powerful.A monomer pump is a device used to generate the injection pressure of the fuel injector (or injector).

5. Conclusion: Common rail is better than electronically controlled monomer pump. The principle of the two is different. Although the injection time and injection volume are precisely controlled through solenoid valves, the common rail can eliminate the impact of high-pressure fuel pulses on fuel injection. It is equivalent to a reservoir, which has a pressure stabilization effect and makes the injection more stable. If you have any questions, please ask.