quot; mileage anxiety quot; one day does not resolve, new energy vehicles are difficult for a day, especially pure electric vehicles. Most people know that the electric car mileage is anxious, most of the battery life is shipped. Nominal NEDC battery life, in the hands of everyone, can not reach the ideal value, extreme road conditions are 10 no six. NEDC standards have limitations in today’s era, but there is no more appropriate procedures to solve problems, everyone can only have been anxious.
With the birth of WLTC, the situation is about to improve, it is expected to become energy consumption quot; virtual standard quot; Terminator. On July 1 this year, “Passenger Fuel Consumption Value Limit” mandatory national standard (GB19578-2021) will implement, and new WLTC will replace NEDC test procedures.
What are WLTCs changed?
From the ideal environment to the evolution of the actual environment, this is its core change. Why do you feel the NEDC battery life, because the NEDC test itself is an ideal environment, so it has created a new energy vehicle ideal battery life. The vehicle driving itself is a complex of various variables. It is tested with simple and rude test procedures. Can there be a reference value for consumers? Obviously!
What is the WLTC? Worldwide Harmonized Light Vehicles Test Cyclequot; (World Unified Light Vehicle Test Cycle), you can understand the advanced version of NEDC test standard procedure. In this regard, WLTC has added more variables, such as four types (56.5km / h low speed, 76.6km / h speed, 97.4km / h high-speed, 131.3km / h high) road conditions, simulation simulation, The energy consumption of each model. The corresponding continuous test time has also made more detailed divisions, 589 seconds, 433 seconds, 455 seconds, and 323 seconds. More importantly, the vehicle’s rolling, vehicle weight, and internal electrical use are also included in the evaluation system. In whole, WThe LTC measurement data is naturally more accurate than NEDC. The variables are much, which greatly reduces the operability of the test, and the process of testing has become more complicated and accurate.
In fact, the four ministries in the end of last year have voiced, the goal is to improve the problem of new energy tests, and promote the landing of WLTC standards. From the test procedures, the detailed WLTC standard replaces the existing standards. The implementation of WLTC test standards also indicates that new energy vehicles ushered in new openings, and the energy consumption information of future declaration will be closer to the actual experience.
The energy consumption will become the past
“Multiplier”, the National Standardization Administration Committee Use the car fuel consumption limit “Mandatory national standard (GB19578-2021) procedure, where is it reasonable?
The first is the understanding of the concept of energy consumption, everyone may have a cognitive deviation. The determinants of energy consumption are not the maximum power, peak torque, but instantaneous performance under different conditions. Accelerated decelerations often completed in a short a few seconds, in the NEDC test procedure, slowing down the speed of speed, extending the time of equal speed cruise, weaken the impact of variables.
A hundred kilometers of fuel consumption in the plug-in mixing model, using 100km minus pure electricity, and then use the engine to run a mileage. Finally measure the theoretical fuel consumption, even as low as 1.2L / 100 kilometers. Performance of the permanent movement, I know that I don’t have practical situation. Such data is too ideal, and it also provides optimized space for energy consumption.
For car companies, WLTC standards are stricter, and there are more barriers in the road of new energy development. After all, the advancement of the double-point policy limits the development space of the fuel car, which increases the development opportunities of new energy. However, under the same technical conditions, the new energy model wants to end the standard, meets more stringent WLTC standards, which will undoubtedly increase manufacturing costs. There are still many models that will be returned because they don’t meet the standard. However, the pressure of car companies from national standards will follow down, and finally run through the upstream of the entire automobile manufacturing industry, urge them to innovate technology. It is a good thing for the development of the new energy industry. WLTAt C test, the new energy vehicle will be closer to the actual energy consumption, and the virtual standard will become past formula.
The national combination of new standards have set new standards, constrained car companies After retreating. However, if you want the industry to develop forward, you need to make a collaborative progress of the industry upstream and downstream enterprises. Light of the car, it is obvious that it is difficult to support the wood. The reason why domestic new energy is being ill, and it is also related to its market practices within 20 years. The new standard of WLTC is developed, and the new energy is developing. Choose to implement the WLTC test standard on July 1, which is also a certain response time to enterprises.