DI (direct injection) gas engines aim at providing clean and efficient combustion. Mixture
quality control and hydrocarbon emission reduction are key development challenges in such …

Large-eddy simulation of fuel injection and combustion in a direct-injection natural gas
engine was conducted. The influence of the fuel injection timing and ignition position was …

Natural gas has been identified as one of the most promising alternative fuels. Port injection
of natural gas, due to its advantages of costs, manufacturing complexity and mixture …

This paper investigates into the mixture formation in a direct injection, turbocharged, spark-
ignition, CNG engine. The engine features a pent-roof combustion chamber, a bowl in piston …

The present paper is the result of a cooperation between Politecnico di Torino and AVL List
Gmbh within a recent collaborative research project funded by the EC. The research work …

Direct injection (DI) compressed natural gas (CNG) engines are emerging as a promising
technology for highly efficient and low-emission engines. However, the design of DI systems …

This article presents the results of computational studies investigating the ignition of high-
pressure natural gas jets in a compression-ignition engine with glow plug ignition assist. The …

Understanding the mixing process of under-expanded gaseous-fuel jets from an outward
opening injector is essential for developing Direct Injection (DI) internal combustion engines …

The results of a previous study, part 1, showed that use of a shield can improve the thermal
performance of a glow plug, and thereby reduce ignition time. However, the part 1 study also …

For two-stroke low speed marine engines, using a natural gas-diesel dual-fuel mode can
effectively reduce emissions such as NOX, SOX, and CO2, making it an important approach …