Chinanews.com, Nanjing, July 22 (Xu Shanshan) Is it tricky to "jump the gun" frequently?
Is it a routine to refuel more than the tank capacity?
In response to these common misunderstandings about refueling, Wang Chiyu, deputy director of the People's Livelihood Institute of Changzhou Inspection and Testing Standards and Certification Institute, came to the PetroChina Jiangsu Changzhou Sales Branch Renmin West Road Gas Station on the 22nd, and answered questions for the public through the actual measurement operation by the staff on the spot. confused.
Many people think that frequent "jumping the gun" during the refueling process will "lack a lot of money".
In this regard, Wang Chiyu said, "jumping the gun" is completely normal.
The "jump gun" is not controlled by humans, but is related to the structure of the fuel tank and the size of the air resistance. It is a design for safety reasons.
The fuel gun port is usually equipped with a sensor. Once the sensor contacts the oil vapor, the fuel gun will automatically close to prevent the oil from overflowing and form a "jump gun".
At the scene, the staff set up an empty car fuel tank and demonstrated the difference between the nominal capacity of the fuel tank and the actual capacity.
Photo by Xu Shanshan
"Another situation is that due to the height of the sensor of the oil gun, oil splashes on the sensor of the oil gun, which will also lead to 'jumping the gun'. In addition, the frequency of 'jumping the gun' is also related to the design of the oil filling port of the fuel tank. Long and cambered, the frequency of 'jumping the gun' is high, and the fuel injection port is large and short, the frequency of 'jumping the gun' is low." Wang Chiyu said.
At the scene, the staff set up an empty car fuel tank to demonstrate the difference between the nominal capacity of the fuel tank and the actual capacity. The fuel tank of a Dongfeng brand car with 50 liters of fuel can actually be filled with about 52 liters of gasoline.
The staff conducted on-site tests on whether the frequent "jumping guns" concerned by customers affected the error of the flowmeter.
Photo by Xu Shanshan
Why is the fuel volume larger than the fuel tank capacity on the vehicle manual?
According to Wang Chiyu, the national standard stipulates that the rated capacity of the automobile fuel tank should be controlled at 95% of the maximum liquid capacity of the fuel tank.
Therefore, the rated capacity of the car must be smaller than the actual capacity of the fuel tank. If the fuel is "full", the actual fuel capacity must be larger than the rated capacity.
Regarding the phenomenon of "high-grade car with low-grade gasoline or low-grade car with high-grade gasoline", Wang Chiyu reminded that the compression ratio of the car is the main reference for deciding which grade of gasoline to use.
Generally speaking, if the compression ratio of the car is above 10.0, it is best to use 95-gauge gasoline. If the compression ratio is lower than 10.0, it is recommended to use 92-gauge gasoline. Of course, it depends on the vehicle instruction manual. It is not conducive to the maintenance of the car to use the oil with too high or too low label.
The event site also invited the Fire Rescue Brigade of Wujin District, Changzhou City to jointly simulate the spontaneous combustion and disposal of vehicles.
Photo by Xu Shanshan
The event site also invited the Fire Rescue Brigade of Wujin District, Changzhou City to jointly simulate the spontaneous combustion and disposal of vehicles.
During the drill, the staff quickly activated the fire extinguishing emergency plan after discovering the fire, and dialed 119 to call the police at the same time.
The fire department immediately arrived at the scene after receiving the alarm. The reconnaissance team put on protective equipment and went to the scene to conduct fire reconnaissance to find out the location of the fire, the direction of the spread of the fire, and the trapped position of the people, and timely feedback the results to the on-site commander.
According to the on-site reconnaissance situation, the on-site commander immediately issued an order, and the on-site alert and evacuation team quickly drew up the cordon, demarcated the warning area, evacuated people, and prohibited any vehicles and personnel from entering the gas station; the fire-fighting and rescue team quickly laid water belts and set up two A water gun and a foam tube gun are deployed to cool and extinguish the fire.
After 15 minutes of fighting, the fire was successfully put out.
(Finish)