With the popularity of family cars
and fuel prices remain high
Consumers are concerned about the trend of oil prices
I am also paying more and more attention to "refueling"
The fuel dispenser is a measuring instrument under the key management of the state, and the market supervision department implements the whole process of supervision.
In 2021, the market supervision department will carry out special supervision and inspection of gas stations, promote the self-commitment of gas stations to measure integrity, and promote the use of gas dispensers in accordance with laws and regulations through secret visits and spot checks.
So, as a daily "refueling person", what kind of understanding do you have about "fuel dispenser"? Below, let's take a look at these common fuel dispenser measurement knowledge with Xiaobian!
01
Legal supervision of fuel dispensers
The dispenser is a complete working measuring instrument composed of the main parts of the oil pump, measuring converter, indicator device, oil gun, oil and gas separator, etc., and the maximum allowable error of the dispenser is ±0.3%.
The market supervision department implements the whole process supervision of the fuel dispenser:
In the production process, the tanker manufacturer must first pass the type test of the type evaluation agency and obtain the type approval certificate of the measuring instrument issued by the government measurement administrative department before the production and manufacture of the fuel dispenser.
Before the refueling machine is put into use, it must be compulsorily verified by the statutory measurement verification agency authorized by the government metrology administrative department according to law.
During the use of the tanker, it must accept the mandatory verification of the statutory metrology verification agency twice a year.
The repair of the fuel dispenser should be repaired by a unit with legal maintenance qualifications. After the repair, the refueling machine should be re-inspected by the statutory metrology verification agency before it can be put into use.
02
Does the fuel dispenser have anti-cheat features?
Yes.
The national metrology verification regulation JJG443-2006 "Fuel Dispenser" has clear requirements: tankers produced after September 8, 2006 must be equipped with anti-cheat devices.
The revised National Metrology Verification Regulation JJG443-2015 "Fuel Dispenser" renames the anti-cheating device of the dispenser as the self-locking function, and requires that when any components, procedures and parameters related to measurement are illegally changed, the refueling machine is automatically locked and refueling is prohibited.
In order to prevent the occurrence of cheating behavior such as replacing the motherboard, the statutory metering agency has attached a lead seal with the legal measurement agency code to the three important positions of the main board, the encoder, and the adjustment device of the flow measurement converter, among which the adjustment device of the flow measurement converter is sealed with a uniquely coded disposable lead seal, and it is forbidden to replace and adjust it at will.
03
Can the oil grid display on the dashboard accurately reflect the actual amount of oil stored in the tank?
Not really.
The fuel gauge of the car is an indicator in the electrical instrument of the car, which plays the role of "indication". Its structure is mostly through the float, etc., the liquid level height of the gasoline in the tank is converted into an electrical signal, so that the oil gauge has a corresponding indication, and its factory setting value and the different working conditions of the driving operation determine that there is no absolutely accurate correlation with the actual driving mileage or the remaining oil amount.
During the driving process of the car, the bumps and steering tilt of the body will cause the liquid level to shake, and the corresponding shaking of the float has a great impact on the indication of the fuel gauge. This also determines the low accuracy of the oil gauge indication, which cannot be used as a basis for accurately measuring the amount of fuel stored in the tank.
04
The same price of oil, running different distances, the gas dispenser metering is not accurate?
not necessarily.
Master Zhang added 200 yuan of oil last time, ran 310 kilometers, this time added the same price of oil, only ran 300 kilometers, this tanker is not accurate ah?
This comparison is unscientific. Because the road conditions are good or bad, how much vehicle load, the price of oil, the quality of oil products, the speed of travel, weather conditions, traffic congestion, oil road penetration and other factors will affect the fuel consumption of the car, so it is not possible to judge whether the amount of refueling is accurate only by comparing the amount of refueling, the amount of fuel, and the number of kilometers traveled with the past.
05
Can you use the fuel tank volume to judge whether the dispenser is accurate?
The rated volume of Xiao Zhang's car fuel tank is 45 liters, after the oil warning light alarm, he filled the fuel tank at the gas station, and the fuel dispenser showed that 46 liters were added, Xiao Zhang wondered if the gas station master had moved his hands and feet?
There is an irregularly raised part of the upper surface of the tank, and there is air in the raised part under normal refueling state, which, together with the tank mouth cover, regulates the pressure inside the tank. If the oil is added to the mouth of the tank, this part of the air is squeezed out of the tank by gasoline, and the amount of oil added will be more than the rated volume, but there are also safety hazards. If the owner asks to fill up with oil, so that the tank is full, the amount of fuel is almost the maximum capacity of the tank, which is definitely greater than the rated fuel tank volume of the car. Therefore, it is recommended to add only the rated volume of oil per refueling, which not only meets the safety requirements, but also reduces the load on the car.
06
What should consumers pay attention to when refueling to protect their legitimate rights and interests?
There are 3 points to focus on:
1. Whether the gas dispenser display panel is affixed with a strong inspection pass mark within the validity period.
2. Before refueling, you should verify the brand and unit price to be refueled, and pay attention to check and confirm that in addition to the unit price display, the rest of the display is zero.
3. After refueling, you should pay attention to whether the oilier drops the residual oil of the net oil gun, and verify the amount and amount of refueling.
If consumers have doubts about refueling measurement, they must save the invoices, videos and other evidence, and make consultations or complaints to the company belonging to the gas station, or they can call the "12345" citizen service hotline to report or complain.
Source: Shanghai Market Supervision
Editor: Gu Xiaoyi