The low speed of the semi-trailer does not equal the problem of fuel-efficient car
The semi-trailer is used to pull large pieces of goods, or the quantity of goods can be used, and the logistics use semi-trailer is more. After the semi-trailer demolition inspection, it is found that there is water mark at the connection of the exhaust manifold, which was originally considered to be The cylinder head gasket is damaged. When the cylinder head is disassembled, the cylinder gasket is found to have no damage marks. The suspected problem occurs on the cylinder head. By cleaning the cylinder head, it is found that there is a crack leakage on the bridge of the nose between the cylinder head valve, and the exhaust gas enters during the exhaust process. Manifold. At high speeds, the driver is driving at a very fast speed while driving the semi-trailer, and the driver must concentrate on preventing sudden situations.
Through communication with the owner of the vehicle, it was found that the car was transported in the Yunguichuan mountain area all the year round. The slope was long and the slope was also large; the owner felt that the high speed was expensive when driving, so the low-speed climbing method was used to save some oil. When the engine speed is low, the engine power is insufficient, causing the engine to overheat the water temperature. The owner adopts the water tank spray method to cool down. Although this method can achieve the cooling effect, the water temperature fluctuation is too large, and the low engine speed causes the engine to overload. The cover is partially overheated, and stress concentration at the nose of the cylinder head causes cracking to occur.
In the actual driving process, we should operate the vehicle correctly according to the configuration of the vehicle. Low-speed driving is not possible for every truck, and in some cases, low speed does not mean that it will save fuel. When driving their own vehicles, the card friends should know the overall configuration of their vehicles, choose the appropriate gear and speed, and only the correct operation can make the vehicle less problematic and bring more benefits.
The semi-trailer does not equal fuel economy at low speed. Hill climbing needs more power to support the power. It does not drive according to the actual configuration of the vehicle. Simply climbing the slope with low speed can only cause excessive engine load, causing a series of engines. malfunction. Therefore, we must eliminate these misunderstandings in order to drive a semi-trailer better. In this case, the driver who drives the semi-trailer for a long time is very prone to lack of energy, eye fatigue, unresponsiveness, etc., and cannot cope with unexpected situations. Therefore, it is necessary to ensure adequate sleep and not fatigue driving.
