Gas semi-trailer and oil semi-trailer, how to choose more suitable?

In recent years, with the continuous improvement of domestic economic development level, relevant departments pay more and more attention to environmental pollution. In this environment, many car companies have launched new products that are more environmentally friendly, such as electric cars and gas vehicles. However, transportation commercial vehicles such as semi-trailers mainly run long distances and have high requirements for endurance capacity and charging places, so it is difficult to achieve comprehensive electrification. Therefore, gas vehicles are mainly used at present.

Gas semi-trailer refers to a kind of semi-trailer which is fueled by natural gas and replaces fuel oil. Its fuel can be generally divided into LNG (liquefied natural gas) or CNG (compressed natural gas). However, CNG models are relatively few now, and LNG models are the majority.

With the implementation of the Ⅵ emission standards, the emission monitoring of heavy-duty diesel vehicles has become more and more strict. Many owners have changed their fuel cars into gas cars, and some owners are thinking about changing their models into gas cars.

So, how to choose more suitable gas and fuel semi trailer? When it comes to choosing, we should weigh the pros and cons first.

Advantages of gas semi-trailer:

1. Cheaper fuel

In most cases, natural gas is cheaper than diesel. It is known that when the equivalent calorific value is the same, countries around the world generally control the price of 1m³ natural gas at about half the price of 1 liter of diesel. If the thermal efficiency of each engine is similar, then the fuel cost of a gas car is about half that of an oil car. This saves a lot of money a year on vehicle fuel.

2. Protect the engine

For the engine at the top of the vehicle window, natural gas in the engine is easier to integrate with air evenly, combustion is more complete, clean, not easy to produce carbon deposition, so it can greatly reduce the wear degree of the parts in the engine cylinder, prolong the service life of the engine, improve the use of lubricating oil restrictions, in order to reduce the maintenance or repair costs of the vehicle.

3, low temperature starting performance is better

This point in the north of the car owners may experience more profound, the feeling of baking cars in the morning is really not how good. But there are no such worries with gas cars, because the tank itself is a cold gas or liquid, unlike diesel, which can freeze.

4, more environmental protection

Compared with the fuel vehicle, the gas vehicle exhaust is cleaner, including CO2 emissions down about 20%, CO down about 97%, HC (hydrocarbons) down about 72%, NOX (nitrogen oxides) down about 30%, basically does not contain lead, sulfide and benzene and other harmful substances, do not add additional urea for vehicles, do not worry about excessive exhaust detection fines, In addition, it can be encouraged and supported by the state, and there are certain tax incentives when buying cars.

5, not afraid of "gas guzzlers" steal

Gas guzzlers can be annoying to semi-trailer owners, many of whom have to sleep on the tank on cold days. After the replacement of the gas car is not the same, after all, natural gas is not want to steal can steal away, after all, the risk of stealing gas is much more than stealing oil, and the price is not as expensive as fuel, so the owner tired can directly stop to rest, do not worry about the fuel is stolen.

Gas semi-trailer disadvantages:

1. Poor coverage of filling stations

Currently our country's filling station coverage rate is far less than gas station, no matter where car owners go, even remote villages, can also find gas station, but gas station is different, many counties and even prefecture-level cities are not. Once the transportation distance is far, it is necessary to do the calculation at all times, quite troublesome. Also because of this reason, the use of gas semi-trailer there are regional restrictions, must be planned route, there is no refueling station can not go to the area.

2. The price of gas cars is high

It has to be admitted that the price of gas semi-trailer is generally higher than that of fuel semi-trailer. Even if it is refitted, replace the gas engine and install the vehicle gas storage tank, reducing valve, mixer, etc., the price probably needs about 100,000 yuan. The price is prohibitive for many car owners.

3. High maintenance cost

Although many trailer enterprises have made a lot of efforts in the maintenance difficulties of gas vehicles, and also pay attention to the training of service station maintenance workers, but according to some owners, gas semi-trailer repair at least costs more than one thousand pieces, even if the replacement of a pipe is one thousand pieces, the maintenance cost is higher than that of fuel vehicles.

4. Lack of power

Because the gas fuel occupies a certain volume in the combustible mixture in the cylinder (the volume of fluid fuel in the diesel cylinder is ignored), the work done by using natural gas as fuel is less under the same working volume of the cylinder. At present, the engine of the gas car is mostly modified by the original diesel engine, so the power will often drop about 10%-20% after switching to natural gas, which is what the owner said, slow climbing, acceleration response and other phenomena.

5. Not suitable for long distance

A gas car with a full tank can travel about 700 kilometers, but the fuel car is basically two large fuel tanks can run more than 2,000 kilometers after being filled. If it is to run long distance transportation, the gas car will appear very weak.

Therefore, when considering the choice of gas semi-trailer or fuel semi-trailer, it is necessary to fully consider the source of goods, route, region and other factors. For example, for high-speed transportation of large goods, green goods or express transport vehicles, the timeliness requirements are higher, is not suitable for gas vehicles, because gas vehicles run at high speed when the need to often under the high speed gas; Again, for example, often run a fixed transport route, route beside the gas station more owners, more suitable for gas car, need to run the owner is not suitable for gas car; In addition, it also depends on the area where the owner is located. For example, the northern refueling station coverage is larger, the vehicle refueling and maintenance is more convenient, and the southern refueling station is less and the service supporting is less, which is not suitable for the gas car in comparison.

Some owners also say that gas semi-trailer is heavier than fuel semi-trailer in weight, which is not appropriate in the context of the current clear limit of total weight of semi-trailer. However, with the continuous fermentation and upgrading of lightweight theme in the trailer industry, whether it is gas semi-trailer or fuel semi-trailer, its weight can make greater progress. Just like the lightweight trailer axle developed and produced by DARO Group, which provides more possibilities for semi-trailer weight reduction, DARO's new disc brake lightweight trailer axle can reduce the weight of about 15% than the ordinary trailer axle on average. It can not only reduce the weight of the body, but also help to save fuel, reduce tire damage, and reduce the comprehensive vehicle cost.