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  Project summary

Project name:

Methane Engines for Passenger Vehicles 

Project acronym: MetCar 
Project duration: 01.07.2018-30.06.2021 
Financial support by: Bundesministerium für Wirtschaft und Energie 
Contemporary Natural Gas (NG) engines for passenger car applications are not consequently optimized for NG operation. But, due to its high knock resistance, NG offers a high efficiency potential versus gasoline already. EE-C-Methane consists mainly of very neat methane. Therefore, it offers an even higher knock resistance (higher Methane Number) than NG. The higher knock resistance can be transformed into higher efficiency by further increasing the compression ratio (CR) and the boost level of the engine.
In order to exploit the potential and to achieve the high efficiencies, while maintaining drivability and component durability, many aspects need to be considered during the development of a dedicated EE-C-Methane engine, which are content of the described project MethCar. Beside the significant rise of the peak combustion pressure capability of the base engine, volumetric efficiency is going to be increased by means of a new methane direct injection system and a turbo charger with variable turbine geometry, as well as a fully variable valvetrain. Furthermore, the impact of the methane composition (EE-C-Methane) is an important factor for the market introduction potential of methane as automotive fuel. Therefore, in MethCar, the impact of the expected main components of EE-Methane (H2, CH4) and trace elements (as sulfur and compressor oil) on component wear and catalyst efficiency is investigated.
The 3rd innovative element of the study is the investigation how to avoid particle emissions robustly, with the focus on small particles.
Project responsible: Prof. Dr.-Ing. Dimosthenis Trimis
Scientific staff: M.Sc. Rohit Khare