Energy saving tires can save 1%~10% and contribute to reducing consumption

Among the factors affecting the vehicle's fuel consumption, in addition to the powertrain, the weight of the car, and the appearance of the car, the tire usually plays an important role. Judging from the energy-saving passenger vehicle tire products released by a number of tire companies, through reasonable tire formulation and pattern design, fuel savings of 1% to 10% can be achieved by relying solely on tires. If a certain model can save fuel by up to about 5% from one tire, it will have a greater role in the overall compliance of the vehicle.

A few days ago, in the draft of the “Accounting Method for Calculating Average Fuel Consumption of Passenger Vehicles” (hereinafter referred to as “accounting method”), the Ministry of Industry and Information Technology confirmed that the fuel consumption calculation of passenger cars for auto companies will adopt the average fuel consumption of the enterprise (ie “CAFE method”. "Corporate Average Fuel Economy", the company assesses according to the annual limit standard, if it can exceed the standard, it will have the corresponding amount award and can be carried forward to the next year. The indicator for fuel consumption of passenger vehicles on which the accounting method is based, that is, the so-called third-phase passenger vehicle fuel consumption standard, is roughly equivalent to a further decrease of about 20% on the basis of the second phase.

The reporter saw from Michelin's data that Michelin's ENERGY XM1+ fuel-efficient passenger tires can increase mileage by at least 25% compared to its predecessor, and at least 5% compared to Michelin's all-carbon black formula. Due to the addition of a certain proportion of silicon material to the tread rubber formula, Michelin ENERGY XM1+ can effectively reduce the rolling resistance, thus saving fuel consumption. At the same time, the optimized tire structure design tends to balance the stress distribution on the tire's ground plane, which results in a more even tire tread wear and higher mileage.

From the comparison test on the Shanghai Volkswagen Polo [Review Picture Forum], it can be seen that the vehicle fuel consumption comparison test results at a uniform speed of 50 km/h show that Michelin energy-saving tires can save fuel by 7.7%.

The running resistance in the fuel consumption test method for passenger vehicles is generally determined by the sliding energy change method. The gliding method can better reflect the benefits of reducing automobile wind resistance, reducing tire resistance, etc., to reduce automobile fuel consumption, and truly reflects the running resistance of the automobile when it is actually traveling. Therefore, with the car's glide resistance test using energy-saving tires, the energy-saving effect can finally be reflected in the reduction in fuel consumption.

An expert who participated in the formulation of the third phase of the fuel consumption limit standard for passenger vehicles told reporters that vehicles equipped with energy-saving tires were subjected to advanced gliding tests to obtain resistance characteristics, and then returned to the gantry as required by the standard. Fuel consumption test, so that after passing the corresponding resistance characteristics of energy-saving tires, the fuel consumption value according to the fuel consumption experiment of the operating mode method can surely draw conclusions that are favorable to their own models, which is theoretically useful.

Another technician of the self-owned brand passenger car company also told reporters that the fuel consumption measured by the multi-condition drum test depends on the vehicle's driving resistance parameters, and the resistance characteristics of tires with different adhesion coefficients will definitely bring about differences. The measurement of fuel consumption, that is, energy-saving tires can certainly bring about the energy-saving effect of the vehicle. However, he also pointed out that due to different trajectories of different drivers and different wind resistance conditions, each test result cannot be completely coincident, and there is a certain degree of deviation, which can not accurately determine the absolute value of a specific tire. Energy saving value.

Nevertheless, an industry expert still pointed out that the use of energy-saving tires not only brings benefits to the improvement of the fuel consumption of the “CAFE Act” companies, but also contributes to the energy saving of the whole industry and even the whole society, and drives more companies. The development and use of energy-saving tires is a general trend.