The release of the Toyota FCV has rekindled the debate over pure electric and fuel cells, but whatever the outcome of the debate, they are actually future technologies – their true popularity is at least ten years and as many as twenty years. Therefore, whether it is pure electric or FCV, the concept is still more substantial than at present. Pre-listed models can only be regarded as small-scale pioneers. The reduction of Tesla by the two largest companies a few days ago should be able to illustrate this issue.
Then, in the 10-20 year period, it is also controversial that the vehicle energy technology should go in which direction. It is undoubtedly the deepest challenge in this field based on traditional energy technologies (as represented by small-displacement direct injection pressurization), or whether it should focus on hybrid technology.
Direct injection pressurization and hybrid nature are different
If we look at the market penetration rate alone, it is clear that direct injection pressurization will prevail at this stage. Not only has the general public been able to use direct injection pressurization, but there are also many followers and imitators. In contrast, hybrid power is still only outstanding in the high-end market, but its market share is still limited in the mid-to-low-end markets that really need to “take volume.â€
An important reason for the high penetration of direct injection pressurization is that it is based on traditional energy technology improvements. Through the supercharger, small displacement and high power can be achieved, engine displacement is reduced under the same power, and the overall cost is more controllable. At the same time, since direct injection pressurization can indeed improve efficiency, the turbocharged engine's low-speed, high-torque characteristics can give people a good driving pleasure, and it is naturally easy to gain popularity.
Based on the foregoing, direct injection pressurization does not change the basic working principle of the engine, so one of the most important "BUG" of the engine still exists, that is, the efficiency varies greatly under different operating conditions - even if the advanced direct injection supercharged engine, It is impossible to achieve consistent fuel consumption in cities and suburbs. On the contrary, the fuel consumption gap between the two may differ by 50% or more.
Not only that, this technology still cannot solve the problem of high urban road emissions. The overwhelming majority of domestic cars are used in city driving most of the time, which makes the direct injection pressurization technology's actual value in energy saving and emission reduction greatly reduced - the fuel consumption for commute will still be around 10 liters. There is no essential difference compared to traditional technology.
Mixing is not the same. In essence, hybrids have completely changed the working conditions of the engine, that is, they can theoretically eliminate the inefficient work of the engine and work in an efficient manner. In other words, even if driving in a congested city, it can make the engine work as if it is running at a uniform speed on a suburban highway, so that the fuel consumption of the urban and suburban areas can be quite equivalent. What is the concept of this? This means that an ordinary family car can achieve fuel consumption of 100 kilometers below 5 liters on congested commuting roads, which is about half that of conventional vehicles. This change is essential.
Direct injection pressurization and mixing do not repel
1.4T is equivalent to 2.0L, this argument has been recognized by most of the crowd. There are two reasons for this. One is the data. The engine power after boosting is indeed strengthened. The other is the actual performance, direct injection turbocharged engine low torque, feel natural can reach the equivalent of 1.4T 2.0L effect.
In fact, this feature mixes equally. Regarding this point, the cloudworm had been specifically discussed before, namely, how to view the dynamics of the hybrid. Based on the principle of mixing, we know that during daily driving, some of the energy is stored in the battery. So what do people need for power demand? There is no doubt: speed up. Specific conditions include starting speed, overtaking, merging, and so on. Under this condition, the energy of the battery reserve can be superimposed by the motor and the engine to achieve power integration. This combined acceleration force is no less than direct injection pressurization. From the realization of the characteristics are similar: one is the merger of power is indeed not small, the second is the motor's low twist stronger, the conventional mid-low speed acceleration force even better than direct injection pressure.
Also keep in mind that mixing and direct injection pressurization are not mutually exclusive. That is, mixing can be superimposed with direct injection pressurization. In fact, more and more hybrid hypersports are using this feature to achieve the flying of power quality. For example, the BMW i8, just listed, has an engine of only 1.5T, but it can achieve an acceleration of 4 seconds, relying on motor superposition.
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