The current trucks, which ones are high fuel consumption, China III and China IV. Is the technology

Trucks generally have a large fuel content in China III; The fourth emission standard is the fourth stage of the national motor vehicle pollutant emission standard, the main pollutants emitted by automobiles are HC (hydrocarbons), NOx (nitrogen oxygenate), CO (carbon monoxide), PM (particulates), etc., through the application of better catalytic converter active layer, secondary air injection and exhaust gas recirculation system with cooling device, etc., to control and reduce the emission of pollutants from vehicles to the specified value below the standard.

Due to oil, cost, technology and other reasons, the commercial vehicle country has not been implemented according to the original time, but there has been no official official notice of when it will be postponed. According to the document notice, the implementation of national standards for compression-ignition engines (i.e., diesel engines) and automobiles for automobiles is tentatively postponed for one year. That is, from January 1, 2012, where does not meet the requirements of the national standard compression-ignition new car (referring to diesel vehicles) shall not be sold and registered; New compression-ignition engines that do not meet the requirements of national standards shall not be sold and put into use.

The four countries are all EFI trucks, and the three countries are all large pumps. EFI trucks are relatively delicate and have high requirements for diesel quality, so if you want the fuel injector of the national IV diesel engine to live for a long time, install a good oil-water separator and diesel fine filtration. China 4 is now gradually popularized, it is the general trend, only you have to adapt to the policy, no policy to adapt to you.

First, the simplest and most direct is to look at the environmental protection logo of the vehicle, and there are obvious marks behind the signs.

2. Log in to the Motor Vehicle Exhaust Pollution Supervision and Management Center** for inquiry.

3. Take the motor vehicle registration certificate (original or copy is acceptable) to the vehicle management office for inquiry.

Fourth, if it is a new car, you can find the vehicle factory certificate and look for it inside. However, the certificate of conformity of the general car is placed in the DMV. Therefore, when buying a new car, it is recommended to make a copy for future use.

There are several ways to judge that a diesel truck is a country 3 and 4: 1. Check the environmental protection signs of the vehicle: the simplest and most direct is to look at the environmental protection signs of the vehicles, and there are obvious marks behind the signs.

2. Log in to the "Motor Vehicle Environmental Protection Network" to inquire: enter the brand and model on the driving license. 3. Go to the vehicle management office for inquiry

You must bring your motor vehicle registration certificate (original or photocopy). 4. New cars can find the vehicle factory certificate: but the general vehicle certificate is in the vehicle management office, so it is recommended to copy a copy when buying a new car.

1. The fuel consumption is different.

The fuel consumption of China III vehicles is less than that of China V vehicles. The emissions of China III vehicles need to meet European standards, and the emissions of China V vehicles are equivalent to the Stage 5 emission standards being implemented in Europe. From the country to the country, every time the standard is raised, the corresponding fuel consumption will also increase.

2. Emissions are different.

The content of automobile exhaust pollutants in China III is equivalent to the content of Europe. Compared with the China III standard, the nitrogen oxide emissions of China V light vehicles can be reduced by 25%, and the nitrogen oxide emissions of heavy-duty vehicles can be reduced by 43%. Based on the calculation of the total number of motor vehicles registered in Shanghai of about 350,000 per year, it is estimated that the annual new vehicles can reduce the annual emissions of nitrogen oxides by about 1,000 tons.

Hello, the exhaust emission standards of the car are different, and the fuel consumption has nothing to do with the new cars sold now belong to the national five standard cars.

Fuel economy is definitely the most provincial country 3, followed by the country with urea.

Fourth, the fifth country, the most oil-intensive is the four countries and five countries that do not add urea.

Because cars without urea must use EGR to reduce nitrogen and oxygen, this thing is particularly fuel-intensive.

The new model advertised by the manufacturer can save more fuel than it must be blown, and this law is ironclad.

The high fuel consumption of China III trucks is due to insufficient diesel combustion. The reason for the insufficient combustion of diesel fuel is mainly due to the insufficient compression ratio, as the saying goes, the cause of air leakage is mainly the wear of the cylinder liner piston piston ring, the sealing is not good, and then the valve leakage, the valve or valve empty potato mouth wear, the second reason for insufficient combustion is that the diesel atomization is not good.

The solution to the high fuel consumption of the national three trucksThe fuel consumption rate in use is higher than the original factory regulations or quota value, the main dispensing needle can be adjusted or replaced with a suitable main quantity hole, and the optimization method can be used to adjust to the economic value during the adjustment.

If the oil supply is too large, the oil supply of each cylinder is uneven or the atomization is poor, etc., it should be adjusted in time, such as the exhaust pipe is found to be black, the work is weak, the water temperature is too high, the oil supply and fuel injection advance angle should be correctly selected, the piston ring and the cylinder wall are too large or the valve gasket is leaking, the number of buckets should be replaced with the plug ring or overhaul to replace the cylinder liner.

National IIIThe high fuel consumption of trucks is due to insufficient combustion of diesel. The main reason for the insufficient combustion of diesel fuel is the compression ratio.

Enough, as the saying goes, the cause of air leakage is mainly the wear of the cylinder liner piston piston ring, the poor closure of the reed, and then the valve leakage, the valve or valve wear, and the second reason for insufficient combustion is that the diesel atomization is not good.

The solution to the high fuel consumption of the national three trucks

The fuel consumption rate in use is higher than that of the original factory or the fixed state high opening value, the main dispensing needle can be adjusted or replaced with a suitable main quantity hole, and the optimization method can be used to adjust to the economic value during operation, and the machine parts are damaged and invalid or adjusted improperly, such as the ignition is too late and the spark plug is replaced.

Improper clearance, improper contact clearance of electrical breakers, etc., should correctly select the ignition timing and calibrate the spark plug electrical clearance.

If the oil supply is too large, the oil supply of each cylinder is uneven or the atomization is poor, etc., it is necessary to adjust it in time, such as finding that the exhaust pipe is emitting black smoke, the work is weak, and the water temperature is too high, so it is necessary to correctly select the oil supply and injection advance angle, and the piston ring and the cylinder wall match clearance.

If it is too large or the valve gasket is leaking, the piston ring should be replaced or the cylinder liner should be overhauled.

There are mainly the following differences between China III diesel and China IV diesel.

1. From the point of view of sulfur content:

The sulfur content of China IV diesel is significantly lower than that of China III diesel. The sulfur content of China III diesel is much higher than that of China IV;

2. From the perspective of diesel stability:

China IV diesel has good oxidation stability, is not easy to change color and deteriorate, and is not easy to generate precipitates and colloids;

3. From the content of benzene and hydrocarbons:

The benzene and hydrocarbon content of China IV diesel fuel was greatly reduced, and the benzene and hydrocarbon content of China III diesel was relatively high;

4. From the point of view of diesel quality:

The quality of China IV has improved a lot compared with China III, and relatively speaking, the quality of China III diesel is not as good as that of China IV diesel.

In general, the fourth diesel is a new standard diesel according to the national four emission standards, the emergence of the fourth diesel is to improve the quality of Cong Zheng diesel, and the fourth country pays more attention to environmental protection requirements than the third country, both in terms of emission quality and diesel quality The fourth is better than the third country, which more reflects the country's requirements for environmental protection and low emissions.