These devices on a semi-trailer will increase fuel consumption

For trailer transportation, fuel consumption is an inextricable topic, after all, the size of the vehicle fuel consumption is directly related to the income of the owner. Seemingly indistinguishable vehicles, if the fuel consumption is a few liters higher than others, it will cost almost thousands of dollars more to run a long trip back, and I am afraid that I will earn tens of thousands of dollars less than others in a year. Now the freight is so low, the high fuel consumption is really painful.

Many owners look at the high fuel consumption, and think that there is a problem with the tractor. In fact, not only the tractor, but also many devices on the semi-trailer are closely related to fuel consumption. Take a look down here with the DARO trailer axle.

1. Vehicle appearance design.

The trailer moves forward, and the air flow is ushered in from the front, forming a resistance, so the vehicle manufacturer generally fully calculates the wind resistance coefficient when designing, such as the front arc of the cab, the air duct of the two sides of the door, the size of the vehicle bumper, etc., which will play a certain role in the diversion of the wind resistance.

In addition, the profile size, height and width of the tractor and the semi-trailer will also be consistent, so as to reduce the wind resistance when the vehicle is driving. Many owners are willing to buy high-top models, in fact, this is also the reason, if the height of the tractor is small, the back of the semi trailer whether it is the carriage or the goods can not be too high, otherwise it will increase when the cover.

2. Main mounting connection gap.

The gap between the car owners in Europe is generally relatively small, because if the gap is too large, it is easy to produce airflow during the driving process, enter the gap to form a cyclone, and increase the wind resistance of the vehicle. At the same time, it is also necessary to consider the radius of the main hanging, so the design of the front probe of the trailer and the saddle and traction pin position of the tractor is very particular.

3, matching and consistent braking system.

The braking system of the trailer is divided into two parts: the main vehicle braking and the semi-trailer braking. If the braking output of these two parts can not match well, it is easy to cause the phenomenon of pushing head or tailing on the wet road. For example, the main vehicle with ABS or EBS system, the semi-trailer does not have a brake, it is easy to have a semi-trailer wheel hugging, tail dumping, and even when turning sharply.

In addition, the trailer brake is divided into disc brake and drum brake two kinds, in which the disc brake response speed is fast, the braking force is uniform, but the braking force is small; The drum brake has strong braking power, but the response speed is slower than the disc brake.

If the two are mixed, in the case of a bad match, it is also prone to problems. For example, the current three-axis grid and fence semi-trailer are forced to install disc axles, if the matching tractor is installed with drum axles, then there will be uneven braking force, so the whole car disc can improve the braking consistency.

However, it should also be noted that trailers that often run mountain roads or transport heavy goods have relatively high braking requirements, and the use of disc brakes must be matched with liquid slow, which can reduce the brake pressure of the axle brake disc and improve the match of the main hanging.

4, suspension system shock absorption.

In the past, the trailer used a steel plate suspension, and the main suspension was qualified. However, many semi-trailers are now equipped with air suspension, such as dangerous goods transport semi-trailers, three-axis fence grid semi-trailers, and the shock absorption performance of semi-trailers is improved.

However, if the tractor is installed with a steel plate suspension, it is easy to drive the semi-trailer when it passes through the pothole section. The vibration amplitude of the main trailer will also increase the forward resistance of the vehicle.

5, tire collocation and selection.

The type and pattern of tires will also affect the fuel consumption of the trailer. Under normal circumstances, the drive axle of the tractor chooses more tires with greater friction, and the low roll resistance and smooth pattern tires are mostly used on the semi-trailer. This combination can not only improve the driving force, but also reduce the form of rolling resistance, fuel saving and efficiency.

Next, I would like to share with you the fuel saving driving experience brought by old drivers:

1, the car do not follow the trend, to analyze their own operating routes and needs, run what line, transport what goods, what road conditions, different working conditions of the vehicle performance requirements are definitely not the same, according to this choice of suitable power chain and parts.

2, driving habits are very important, to try to keep the gas pedal relatively stable, so that the engine speed in a stable range, to maintain good predictive driving, to minimize sudden braking and rapid acceleration.

3, the choice of goods can not only the freight level, to comprehensively consider the road fuel consumption, vehicle wear, personal physical endurance and other operating costs.

4, wind speed, rain, snow and other weather factors will also have a certain impact on fuel saving driving, according to their own transport conditions reasonable choice and use of hydraulic retarder, parking air conditioning, parking warm air and other configuration, through continuous practice to accumulate their own driving experience, scientific reduction of fuel consumption.