Researchers at the Polytechnic University of Valencia have designed a truck engine that combines hybrid technology and dual diesel gasoline. This can reduce nitrogen oxide emissions by 92%, smoke and dust emissions by 88% and CO emissions by 15%.2 pcsDiesel engines), so it is expected that there will be strict European anti-pollution regulations by 2025.
In order to reduce the environmental impact of freight trucks (weighing between 18 and 25 tons) that drive the most on European roads, CMT-Motores Térmicos Institute From Polytechnic University of Valencia (UPV) Propose a new engine configuration that combines all the advantages of hybrid power and dual fuel combustion (diesel-gasoline)
The results of its first theoretical experimental test are conclusive: Compared with diesel, the proposed technology reduces nitrogen oxides (NOx) and soot content and CO emissions by 92% and 88%, respectively.2 pcs 15% of the exhaust gas (up to 52 grams per ton and per kilometer), so the EU is expected to approve harsh anti-pollution regulations in 2025.These results have been published in the magazine Energy Conversion and Management.
“The purpose of this work is to evaluate the technical and economic potential of parallel hybrid technology and dual-fuel technology to replace pure electrification and achieve a substantial reduction in carbon dioxide emissions.2 pcs The carbon dioxide emissions required by 2025 (by then these trucks will need to reduce carbon dioxide emissions by 15%).And the numbers we got from CO2 pcs He also emphasized that the other most harmful pollutants in internal combustion engines are not only positive. ” Antonio Garcia, Professor UPV, CMT-Thermal Engines researcher.
Together with the institute, two French companies that cooperated with it also participated in the study: Volvo Truck Group Technology Aramco Overseas the company.
The combination of the two technologies, dual-fuel combustion and hybrid power architecture, can maximize the advantages of each technology. “Electronic auxiliary functions avoid the use of heat engines under low-efficiency conditions. At the same time, compared with pure electric vehicles, the heat engine is included in the complete system, so an economically viable car can be obtained, and it is relatively clean,” Garcia pointed out.
On the other hand, the optimization of electrical components allows the heat engine to operate in the highest performance area, and its fuel consumption is reduced by 13% compared with traditional diesel vehicles.
“In addition to this proposal for a new engine, we are also working to use alternative fuels, such as electronic fuels, to maximize the benefits of this technology in carbon dioxide life cycle analysis.2 pcsTherefore, it is expected that the regulations may change in the future,” Garcia emphasized.
Another author Santiago MartinezThe author, also from CMT-Thermal Engines, emphasized the importance of computer simulation in determining the work of different electrical components used with parallel hybrid architectures and dual-fuel combustion systems. In this sense, numerical simulation has become one of the pillars for obtaining research results in a relatively short period of time.
“For this work, Virtual vehicle model It was initially operated with conventional diesel and has been verified using experimental data obtained by Volvo in the truck itself. After that, we consider the actual driving cycle of the truck’s execution activities and optimize the different electrical components (such as motors, generators, and batteries). Martínez emphasized that this method can greatly reduce the number of experimental trials, thereby reducing the cost of developing a certain technology.
For its part, Javier MonsalveAnother member of the CMT-Thermal Engines team explained that to determine the potential of the technology relative to current technologies, it is necessary to consider two main factors to assess its cost. on the one hand, Battery price, On the other hand, the possible savings in the following areas: Fines for excessive carbon dioxide emissions2 pcs. In this sense, in the analysis, the researchers not only considered the current battery price (approximately 176 Euro/kWh) and its forecast for 2025 (approximately 100 Euro/kWh), but also considered the economy of the truck manufacturer loss.Non-compliance with CO restrictions2 pcs By 2025, this will be EUR 4,250 per gram per ton per kilometer.
“Considering the current price of batteries and the EU’s proposed fine for 2025, the hybrid dual-fuel technology for 18 to 25 ton trucks has shown the greatest benefit by using small capacity batteries (up to 10 kWh). Use of larger batteries The group will greatly increase the total cost of the vehicle. Indeed, with the foreseeable decline in the price of lithium-ion technology in the next few years, it will be reduced. But until then, it is difficult to see mass-produced pure electric trucks,” Monsalve Concluded.
A. García and so on. “Dual-fuel combustion and hybrid powertrains are potential solutions to achieve the 2025 emission target in the medium-duty truck sector.” Energy Conversion and Management