On March 1, WeiPai held a launch conference of mocha (configuration | inquiry) dht-phev online. After just one hour of live broadcasting, the car and people were on fire.

The car caught fire, as expected. Mocha dht-phev, priced at 295000-315000 yuan, has a comprehensive endurance of more than 1000 kilometers. Wltc has a pure electric endurance of 204 kilometers and a zero hundred acceleration of 4.8 seconds. Infinity audio, four screen linkage, nappa leather, fragrance system… The configuration of “listening, viewing, touching and smelling” is armed to the teeth, so it is really difficult not to catch fire.

It was unexpected that people were on fire. At the press conference, Li Ruifeng, CEO of WeiPai, said bluntly, “WeiPai intelligent DHT hybrid technology is the best new energy technology in the world”. After the meeting, Sina motor contacted Li Ruifeng for the first time and communicated with him on this point of view. His reply was more firm, saying that “DHT hybrid alliance can” sling “Wei Xiaoli”. The speech immediately caused a sensation on the microblog and spread all over the network a few hours later.

Mouth addiction is the basic operation of many auto enterprises in the new energy era, but Wei brand has always been “seven points to do and three points to say”. No senior executive has ever said similar words before. So why did Li Ruifeng make such a fiery remark this time? Where did he come from? It’s worth exploring.

Many years ago, with people’s examination of environmental quality and energy issues, Emission Regulations became more and more stringent, and the spearhead was pointed at fuel vehicles. Using electricity instead of oil is undoubtedly the most direct and simplest method. Driven by various policies, new forces have sprung up like mushrooms. After many rounds of market competition, they have competed for a new force brand such as “Wei Xiaoli”.

What we call the new energy revolution should not only be a simple energy replacement, but also complete the revolution in technology, improve efficiency and reduce costs. However, from the perspective of the current whole industry chain, simple energy replacement has increased the use proportion of non clean energy and increased the pressure of carbon emission, which is contrary to the general trend of carbon reduction and emission reduction.

Similarly, as a new energy field, DHT hybrid technology can better solve the problem of carbon emission, integrate engine technology and electric technology, better provide consumers with a better car experience, and realize that 1 plus 1 is greater than 2. In fact, whether judging from the research and development progress or the acceptance of consumers, hybrid is undoubtedly a better choice than pure electric.

“Wei brand intelligent DHT hybrid technology is the best new energy technology in the world”. There is no objection to surpassing the pure electric technology, but if you want to be a “first brother” in the hybrid industry, you have to defeat the i-mmd and ths of “benfeng Liangtian”. What are the advantages of Wei brand DHT that can make Li Ruifeng so confident? Let’s start the analysis.

The system architecture of Wei brand intelligent DHT hybrid technology can be summarized as “1-2-3”, that is, one set of DHT oil electric hybrid powertrain, two power forms of HEV / PHEV, and three sets of powertrain for different levels of vehicles. This set of DHT hybrid power assembly includes 1.5l/1.5t hybrid special engine, power generation / drive dual motor, dual motor controller, DHT module (fixed axle gearbox), integrated DCDC (DC converter) and high-efficiency hybrid battery, which can achieve the perfect balance between power and fuel consumption in various driving scenarios.

When the vehicle starts in the city, it is driven by EV mode and starts faster. When cruising in the urban area, it can intelligently switch between EV, pure series and direct drive modes according to the load and battery power, which is efficient and energy-saving. In suburban areas and high-speed endurance, the second gear of the transmitter is driven directly, the power transmission is short, and the fuel saving effect is better. When climbing at high speed, the engine is powered by direct drive, which can climb the slope easily without switching the series mode. The system efficiency is higher than that of other hybrid configurations, greatly reducing fuel consumption. When overtaking at high speed, the engine, generator and driving motor can all output power to drive the wheels to overtake quickly and ensure safety. Of course, when decelerating or going downhill, the motor of Wei brand intelligent DHT will recover kinetic energy, which is the same as that of pure electric vehicle.

Compared with Toyota’s ths, WeiPai intelligent DHT has two modes of series and parallel, while the ths relies on planetary gears, engine and motor to share and adjust each other to ensure that the engine is always in the best state to reduce fuel consumption. In the series mode of WeiPai intelligent DHT, the engine only generates electricity, and the vehicle is only driven by the motor under low-speed conditions, which further reduces the fuel consumption.

Honda’s i-mmd, like Wei brand intelligent DHT, has a variety of modes such as pure electric drive, series and parallel, but Wei brand intelligent DHT adopts a two gear transmission, which increases one gear compared with i-mmd. When driving at low speed, the low gear improves the acceleration performance, and when cruising at high speed, the high gear reduces the fuel consumption, which is undoubtedly more efficient than i-mmd single gear.

With the technical route to defeat “benfeng and Liangtian”, let’s take a look at Li Ruifeng’s sentence that “Wei brand intelligent DHT hybrid technology is the best new energy technology in the world”, which seems to be indisputable.

The technical route is simple, but the Wei brand intelligent DHT hybrid technology really surpasses the Japanese hybrid technology. Behind it must be the technical accumulation that has been dedicated for many years.

The 1.5T engine code named 4b15d is equipped with cylinder head integrated exhaust manifold, 350bar overhead direct injection system, high temperature resistant VGT turbocharger and other technologies. It adopts deep Miller cycle with a compression ratio of 11.8:1, so it will have obvious advantages in response sensitivity and fuel economy. The motor adopts the design of high reluctance torque to improve the lightweight, the hairpin flat wire design to improve the power density, and the low loss 0.27mm silicon steel sheet is used to realize the high-efficiency area proportion of double 85%.

Various technologies are finally presented on Mocha dht-phev, and the comprehensive power of the two-wheel drive model system is 291kw and the comprehensive torque of the system is 570n · M; The system comprehensive power of 4WD model is 355KW, the system comprehensive torque is 762n · m, and the acceleration of 0-100km / h takes only 4.8s.

Li Ruifeng mentioned in the interview: “as for the world’s leading intelligent DHT hybrid new energy technology, it is difficult to do without sufficient technical reserves, including the long-term accumulation of engine, motor, gearbox and other technologies