BYD built a car with 2.9L fuel consumption, why is it still being scolded?

BYD's press conference has not been so popular for a long time.

2.9L, 46.06%, 2100km.

In the past two days, this set of data has attracted widespread attention in the automotive industry. They are the fuel consumption per 100 kilometers, engine thermal efficiency and comprehensive endurance of BYD's fifth-generation DM. Wang Chuanfu, chairman of BYD Group, said at the press conference that they represent a "new era of plug-in hybrids."

The world's highest engine thermal efficiency, the world's lowest power loss and fuel consumption, and the world's longest cruising range.

Some people immediately expressed their dissatisfaction and threw out a certification from the China Automotive Industry Center, saying that their engine’s thermal efficiency is the highest in the world, 46.1%. That person is Xu Dongwei, general manager of Geely Automobile Group Brand User Communication Center. This is his only Weibo post in the past six months.

Subsequently, Geely Automobile’s official Weibo also forwarded it, with the text saying: “The highest in the world, the facts have the final say.”

At this time, netizens quickly became excited, thinking that BYD had once again ushered in the much-loved "overturning moment", shouting that "BYD's research was not rigorous", "it was only one day ahead", etc. But not long after, Li Yunfei, general manager of BYD's Brand and Public Relations Department, also handed out a certificate with the maximum thermal efficiency of 46.5% written on it.

We still have a lot of products with higher thermal efficiency that are not in mass production, but we just don’t want to talk about them.

Damn it, he got it this time.

Independent brands are busy quarreling, and Japanese brands are starting to unite

Although the browser has records, unfortunately the Internet has no memory, and Geely did not respond to this matter. Like previous "executive scolding wars", this topic also fell off the hot search list as the enthusiasm of netizens faded.

Just like Big D in the movie "Underworld" who threatened to establish a new "Singhe Lian Sheng", in the end, he didn't know what he was doing.

On the other side of the sea, it is much more harmonious.

On the same day that BYD released the fifth-generation DM, Toyota, which has been deeply involved in hybrid technology for many years, joined forces with Subaru and Mazda to jointly release a new fuel engine for electrification.

According to Toyota, this engine can be adapted to gasoline-electric hybrid and plug-in hybrid technologies. Its volume is 10% to 20% smaller than before, and its thermal efficiency is increased by 30%. It includes a new 1.5L four-cylinder engine and a 1.5T engine. And, 2.0T engine, etc.

"Co-creation" and "competition" have the same pronunciation*, which is a pun and represents two meanings.

*In Japanese pronunciation, "co-creation" and "competition" have the same pronunciation.

Toyota's President Tsuneharu Sato told the media at a communication meeting that carbon dioxide is the common "enemy" of Toyota, Subaru and Mazda. In the competition, some R&D does require collaboration to speed up and explore creativity. Subaru's President Atsushi Osaki also called on all supply chains to work together to promote technology research and development, "Let's create the future together," Osaki said.

The three established Japanese companies working together to keep warm are in sharp contrast to the intense public opinion war among domestic car companies.

Of course, for the three Japanese car companies, this is also the last resort. Today’s hybrid market situation is different from the past. " The world's most advanced plug-in hybrid technology is in China. " Wang Chuanfu said. In his view, the century-old history of automobile development is a history of struggle to reduce fuel consumption:

  • In 1932, manual transmission technology was born, and fuel consumption per 100 kilometers dropped to about 20L.
  • In 1954, in-cylinder direct injection technology was put into mass production, and fuel consumption per 100 kilometers dropped to about 17L.
  • In 1962, a turbocharged engine was installed on the car, with a fuel consumption of approximately 16.6L per 100 kilometers.
  • In 1980, variable valve timing technology was put into use, and fuel consumption per 100 kilometers dropped to 11.4L
  • In 1993, the Miller cycle was applied to the car, and the fuel consumption per 100 kilometers reached 8.7L
  • In 1997, gasoline-electric hybrid technology started large-scale application, and the fuel consumption under NEDC operating conditions was 5.9L.

Obviously, this history has nothing to do with Chinese car companies. It was not until 2021 that BYD launched the fourth-generation DM technology based on a dual-motor series-parallel architecture, which reduced the NEDC fuel consumption to 3.8L – this is the first time a Chinese brand has rewritten the global The history of automobile fuel consumption has entered the era of "3" fuel consumption.

All data show that the fourth-generation DM is an epoch-making hybrid system: the maximum thermal efficiency is increased to 43.03%, the EHS electric hybrid system motor has a maximum efficiency of 97.5%, and a new blade battery is used.

Sales success is the most powerful evidence. Between 2021 and 2023, BYD occupied 60% of China's plug-in hybrid market, selling a total of 2.656 million plug-in hybrid new energy vehicles. "For every 2 plug-in hybrids sold, there is 1 BYD." Wang Chuanfu said. Now, BYD has used the fifth-generation DM to push the plug-in hybrid industry into the era of "2" fuel consumption.

To be precise, it is 2.9L per 100 kilometers——

This is the second whirlpool of public opinion that the fifth-generation DM has fallen into.

Fifth generation DM, false propaganda?

The data of 2.9L/100km is actually the result under the NEDC test standard, but BYD did not clearly state this at the press conference.

According to the announcement from the Ministry of Industry and Information Technology, the lowest fuel consumption data of Qin L DM-i equipped with fifth-generation DM technology under WLTC operating conditions is 3.8L/100km. Because of this, some people believe that BYD is secretly changing the concept and is suspected of false propaganda.

▲From left to right is the energy consumption information of the 60km, 90km, and 120km versions of BYD Qin L

NEDC (New European Driving Cycle) conditions are a set of standard test conditions developed by the European Union in 1997. It simulates typical urban and suburban road conditions in Europe and includes 4 urban cycles and 1 suburban cycle.

WLTP (Worldwide Harmonized Light Vehicles Test Procedure) is a set of international standard test conditions developed by the United Nations Economic Commission for Europe (UNECE), which simulates more complex driving conditions, including urban congestion, suburbs, highways, and ultra-high-speed driving. Various road conditions.

" The reason why NEDC was chosen is that its test speed is closer to the actual conditions on Chinese roads. " BYD Vice President Yang Dongsheng told the Automobile Association.

Yang Dongsheng is not only the vice president of BYD, but also the director of BYD's Product Planning and Automotive New Technology Research Institute and the chief designer of DM hybrid technology. He further explained that the average speed under WLTP test conditions is 46.5km/h, while NEDC is 33.38km/h, which is closer to the average vehicle speed in China's first-tier cities (20-25km/h).

However, compared with NEDC working conditions, WLTP working conditions are more complex, with longer test time, farther driving mileage, and more random acceleration and deceleration processes, which can more accurately reflect the true energy consumption and emission levels of the vehicle. It is for this reason that the Ministry of Industry and Information Technology uses data under WLTP operating conditions. Even the European Union, which formulates NEDC operating conditions, has also turned to WLTP in recent years.

After the public opinion fermented, Geely Vice President Yang Xueliang did not forget to come out to add insult to injury: "I feel it is better to be more realistic. I guess the older generation of scientists would also think so if they were still alive."

The “older generation of scientists” mentioned by Yang Xueliang refers to Qian Xuesen.

In 1992, Qian Xuesen wrote a letter to Zou Jiahua, then Vice Premier of the State Council. The letter read as follows:

In this letter, I would like to make a suggestion: my country's automobile industry should skip the stage of using gasoline and diesel and directly enter the new energy stage of reducing environmental pollution.

We should never wait any longer, we must immediately formulate plans for battery-powered cars, catch up, and strive to catch up.

Today, Mr. Qian’s vision has apparently been realized.

▲Qian Xuesen

In 2020, the country set a goal of having the penetration rate of new energy vehicles exceed 50% by 2035. What is unexpected is that it only took 4 years for the Chinese automobile industry to achieve this goal.

Data from the China Automobile Dealers Association shows that in early April, the retail penetration rate of new energy passenger vehicles in China was 50.39%, surpassing traditional fuel passenger vehicles for the first time. Not only are pure electric models flourishing, but the plug-in hybrid market is also experiencing substantial growth—— In 2023, China's plug-in hybrid models will increase by 85% year-on-year.

As Wang Chuanfu said at the press conference, the world's most advanced plug-in hybrid technology is in China .

From the perspective of technological progress, it is not unreasonable for BYD to use 2.9L per 100 kilometers under NEDC operating conditions to compare the 3.8L of the 2021 fourth-generation DM and the 5.9L of the 1997 Toyota Prius. After all, these These are all achievements made under NEDC working conditions.

The fifth-generation DM technology has indeed created an era of "2" fuel consumption.

BYD thinks clearly about what the people need.

BYD has never wavered on the road of getting involved.

Affected by the reduction of state subsidies, the plug-in hybrid sales of Chinese brands have experienced three consecutive declines since 2018. In three years, BYD's annual sales of plug-in hybrid products fell from nearly 140,000 units to less than 70,000 units.

"There are also a lot of doubts within the company. If everyone quits, why do we still persist? But I firmly believe that plug-in hybrid is the first car for most Chinese families . No matter what, we must persist. If we give up, there will be no tomorrow. Yes." Wang Chuanfu said.

Yes, despite spending so many "small targets", BYD's DM technology has always been aimed at "the first car for most Chinese families", that is, the entry-level model. Users of entry-level models are extremely sensitive to fuel consumption.

Ma Aotian from Xinjiang is a typical "fuel consumption-sensitive" user.

A gas truck can only carry 7 or 8 gases. You ask me, can I afford 6,000 a month (referring to my monthly salary)?

Ma Aotian, who lives in Shaya County, Aksu Prefecture, commutes about 60 kilometers to work every day. "It's 60 to 70 kilometers to go to a distant town," Ma Aotian said. "The monthly gas money costs thousands of yuan no matter what." . At the same time, he did not have good charging conditions, and pure electric vehicles were never in his consideration range.

Obviously, for him, the Qin L DM-i and Seal 06 DM-i using fifth-generation DM are good choices. Thanks to the reduced cost of core components, the lowest price of the two new cars is only 99,800 yuan. , the same price as the 2023 Qin PLUS Champion Edition, has become an unavoidable choice in the 100,000-150,000 yuan market.

BYD does not intend to miss out on the 10,000-yuan market.

BYD Li Yunfei revealed to Dong Auto Association that the fourth-generation DM will be sold under the same roof as the fifth-generation DM. “There are still many undelivered orders for the fourth generation,” Li Yunfei added, “The fourth and fifth generations can form very good products. Segmentation and product synergy”.

The reason why we delayed the release of the fifth-generation DM technology until the end of May is to prove that our new technology is not reflected in PPT, and the price can be achieved in one step.

When joint venture brands are marginalized, only Chinese car companies with core technologies are qualified to stay at the table.

"We still have a lot of cards to play," Li Yunfei said.

*At the request of the interviewee, Ma Aotian’s pseudonym is used in the article.

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