As is well known, the high fuel consumption of refrigerated trucks is related to carbon buildup on spark plugs, dirty gasoline filters, damaged oxygen sensors, tire pressure, and clogged fuel injectors. There are two ways for Cold King agents to check fuel consumption: one is to check the average fuel consumption displayed on the car.

Secondly, check the fixed amount for each refueling; Clear the subtotal mileage and check how many kilometers can be driven; If the mileage decreases, the fuel consumption increases. I'm not specifically calculating the fuel consumption of a car for every 100 kilometers, I just look at the increase or decrease in fuel consumption. Both methods are feasible. Generally speaking, fuel consumption does not decrease, but gradually increases.

But a friend found that his car's fuel consumption has increased compared to before, and the power has also decreased. Not long ago, he maintained this car and even used a genuine filter to refuel at a regular gas station. If the vehicle is not maintained for a long time, dirty oil and air filter elements can also increase fuel consumption. If the engine oil is dirty and poorly lubricated, it will increase the resistance of all moving parts of the engine. Overcoming resistance requires more energy, and fuel consumption will also increase.

Spark plugs are easily overlooked. Some people have traveled over 100000 kilometers without replacement. The lifespan of spark plugs up to now. Although it can continue to be used, due to insufficient ignition energy, it will delay ignition and miss the ignition time.

For example, when the piston approaches top dead center, gasoline should be ignited. Due to insufficient ignition energy, the piston will not be ignited before starting to move downwards, which will result in partial power loss and a large amount of energy will not be used for work.

Therefore, he has been puzzled as to why there is still a significant increase in fuel consumption. The refrigerated truck manufacturer suggested that he check again to see what caused the abnormal fuel consumption. Let us understand:

The refrigerated truck driver asked the staff to use a diagnostic device to check the connection with the vehicle. It was found that there was slight wear on the fuel injector valve components, and only this slight wear would cause abnormal fuel consumption in the vehicle.

But the friend of the refrigerated truck driver is very puzzled. This car has been using original filter cartridges. Why do fuel injectors wear out? After inquiring, the staff found that the driver's friend's fuel tank had been modified into a heated fuel tank, and the modification factory cut off the fuel tank when installing the heater. It should be that the foam aluminum was not cleaned during reinstallation. Foam aluminum enters the fuel system with fuel.

The areas with carbon deposits are the throttle valve, fuel injector, intake port, and top of the piston. Excessive carbon buildup anywhere can lead to incomplete combustion and increase fuel consumption. Although it is a real filter element, the filter element can only filter foam aluminum of more than 4 microns.

The foam aluminum less than 4 microns still enters the injector, causing the valve parts of the injector to wear, resulting in high fuel consumption and insufficient power. The original foam aluminum is the root cause of fuel injector damage.

1、 The fuel tank of the modified flatbed transport vehicle is heated up like a friend of the driver above. When refitting, the foam aluminum produced by cutting the fuel tank was not cleaned up, and the foam aluminum entered the fuel, causing damage to the fuel injector.

2、 Welding of refrigerated truck partition. The partition is loose during welding. When the vehicle moves the diesel engine, it will collide with the partition. The friction between the baffle and the oil tank produces foam aluminum. Foam aluminum enters the fuel system with fuel. The low temperature transmitted by the water temperature sensor and the excessive oxygen content displayed by the oxygen sensor will cause the computer to control more fuel injection, resulting in incomplete combustion and increased fuel consumption.

So for driver friends who haven't modified the refrigerated truck fuel tank, when you find that the maintenance work related to vehicle fuel consumption has been completed, fuel consumption is still suddenly increasing, so it is necessary to consider the above two situations. The vehicle should be carefully inspected. If the partition is welded.