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How is the price per liter of gasoline calculated?
Transformation relation:

1, the international oil price is in barrels, and the domestic price is extended to the unit country. A barrel of international oil price is equivalent to 159 liter, (this figure is very accurate.

2. The international oil price is denominated in USD, and the domestic oil price is denominated in RMB. Now 1 USD is exchanged for 6.8 yuan RMB (this figure changes with time).

The international oil price refers to the international crude oil price, not the domestic refined oil price. Domestic oil price refers to the price of refined oil. The ratio of crude oil converted into refined oil in the world is about 1:0.9, plus processing loss, crude oil import and processing cost, the ratio is about 1:0.8. Take the data of the United States in previous years as an example. At that time, crude oil 18 USD/barrel, while American merchants sold it for 22 USD/barrel, which was about 1:0. The quality of American refined oil is higher than that of domestic #97 oil. (This figure is calculated according to the international average level, and the data of PetroChina cannot be found. It is reasonable that the labor cost in China is low, but it is unknown that the processing cost of PetroChina may be particularly high. According to the above conversion relationship, the international oil price is 100 USD/barrel, and the domestic oil price is 100× 6.8 ÷ 159 ÷. At present, when the international oil price is about $70/barrel, it is converted into #97 domestic oil price of 3.742 yuan/liter.

1. Development and Reform Commission: From 24: 00, CCTV news reported that gasoline and diesel were raised in 55 yuan and 50 yuan respectively per ton. At 24: 00 on April 12, a new round of refined oil price adjustment window will be opened again. According to the latest information from the National Development and Reform Commission, the oil price adjustment is as follows: 55 yuan per ton of gasoline and 50 yuan per ton of diesel. It is equivalent to an increase of 0.04 yuan per liter for No.90 gasoline, 0.04 yuan per liter for No.92 gasoline, 0.05 yuan per liter for No.95 gasoline and 0.04 yuan per liter for No.0 diesel. According to the estimation of the 50L capacity of the fuel tank of a general family car, it takes about 2 yuan to fill a box of 92 # gasoline.

2. Ways to reduce fuel consumption:

First, check the air conditioning system in summer. Air conditioning failure may also be an important reason for fuel consumption. If the air conditioning refrigeration effect is not good, many people will achieve the cooling effect by increasing the wind speed and lowering the temperature. In view of the fact that air conditioning will directly affect the fuel consumption of cars in summer, car owners must maintain and check the air conditioning in time. It is worth mentioning that in addition to air conditioning failure, the cooling network (condenser) of air conditioning is covered with dust, which will also directly affect the cooling effect. The car mainly cleans the condenser in time to ensure that the air conditioner is in good working condition.

Second, frequent sudden braking is the main reason for high fuel consumption, which is the main reason for high fuel consumption of automobiles. The data from the hybrid vehicle with kinetic energy storage shows that its fuel consumption is about 40% lower than that of its peers. This data also reflects that the comprehensive oil consumption in urban areas is obviously related to frequent sudden braking. Make full use of the inertia of the vehicle while ensuring the safe driving of the vehicle. Take the red light 300 meters ahead as an example. If the speed is only 40 km/h, you can slide to the intersection by inertia. However, many car owners continue to accelerate while driving. When approaching the traffic lights, the speed has reached 60 km/h, so they have to slam on the brakes, and the fuel consumption during acceleration is wasted.