Under the trend of electrification, the large-displacement internal combustion engine that makes many fans intoxicated has become more and more rare, it is difficult to imagine that the C63 with a 6208CC displacement will become a 2.0L turbo engine within 10 years, and various models also have different degrees of displacement reduction under the trend of the times, but the recently announced Toyota and Yamaha cooperation in the development of hydrogen fuel V8 engines seems to provide more than one choice for internal combustion engine enthusiasts.
Toyota's hydrogen engine, developed by Yamaha and Yamaha, is not from scratch, the hydrogen fuel engine developed this time is based on the Lexus RC F's 2UR-GSE 5.0-liter V8 self-priming engine, which can reach a maximum of 455 horsepower, a maximum torque of 540 Nm, and a maximum torque speed of 3600 rpm. The 2UR-GSE on the RC F has a maximum power parameter of 477 hp and a maximum torque of 530 Nm.
The engine injectors, sprinkler heads, cylinder heads, intake manifolds and other parts of the parts have been modified, Yamaha engineers said that before the experience will have a skeptical mentality, but the experience of praise also made Yamaha believe that this power mode has great potential, and is not just a simple alternative to fuel.
The application of hydrogen fuel internal combustion engines is undoubtedly the best gift for large-displacement, V8 enthusiasts, but there are still many components that need to be perfected to be formally put into use and ensure stable long-term use.
The first is the problem of supplementary fuel and cost, because the density of hydrogen is very small, if you want to provide a certain endurance, you must need liquid hydrogen, and the liquid hydrogen after pressurization needs a high-pressure tank to store, due to the volatile and flammable and explosive properties of hydrogen, the tightness of the high-pressure tank has a great test.
According to theoretical calculations, the hydrogen explosion limit is 4.0% to 75.6%, hydrogen fuel is not like gasoline can burn, so the stability of fuel storage after the high pressure tank is violated is also a great test.
Due to the technical difficulty of hydrogen fuel replenishment stations, it must not be as fast as the popularity of electric vehicle charging piles or replacement power stations, and to achieve the desired supply effect, it may take a large period of facility laying time and high cost.
Metal hydrogen embrittlement problem, as the smallest element on the periodic table, hydrogen can easily penetrate into a variety of airtight metals, affecting the mechanical properties of metals, and like to gather near cracks, so with the use of time, the problem of cylinder embrittlement needs to be perfectly solved to be used as civilian, the cruel reality is that this situation is currently unsolvable.
For example, the recently concluded 2022 Beijing Winter Olympics, a total of more than 1,000 hydrogen fuel vehicles were invested, including 145 passenger cars, 749 buses and buses, and 107 welfare vehicles serving the disabled.
One of these models is the second-generation Toyota Mirai, the only source of hydrogen fuel, powered by the chemical reaction of oxygen and hydrogen in the fuel cell stack to generate electricity.
Hydrogen fuel cells avoid problems that hydrogen internal combustion engines cannot solve, and have the advantages of zero emissions and no noise. In this use, in order to ensure that hydrogen fuel cell vehicles have sufficient hydrogen supply, each energy company is equipped with multiple hydrogen refueling stations, and has the same energy replenishment efficiency as gasoline. In recent years, it can also be seen that hydrogen refueling stations have a more mature operating system, but the penetration rate and high cost of civilian use may be more difficult than the promotion of electric vehicles.
summary
I believe that many people are obsessed with V8 fans, this news makes this part of the group seem to see the light of the internal combustion engine, but the current problem that cannot be solved is not only the problem of metal embrittlement, the cost of use, transportation, storage and other issues coexist, and the stable civilian road of the hydrogen internal combustion engine is still difficult and dangerous. However, unlike Toyota MIRAI's hydrogen fuel cell, such an engine still retains the exciting components of the internal combustion engine, which is worth looking forward to!