Results 11 to 20 of about 3,157,747 (296)

A Mapping Approach for Efficient CFD Simulation of Low-Speed Large-Bore Marine Engine with Pre-Chamber and Dual-Fuel Operation

Energies, 2021
A natural-gas-diesel dual-fuel marine engine with a pre-chamber is a promising solution for ocean transportation to meet the International Maritime Organization (IMO) emission regulations. This engine system employs a pre-chamber with direct injection of
Ying Ye, Zongyu Yue, Hu Wang, Haifeng Liu, Chaohui Wu, Mingfa Yao   +5 more
doaj   +1 more source

Nozzle Design of Plug-and-Play Passive Pre-Chamber Ignition Systems for Natural Gas Engines

Applied Sciences, 2023
To evaluate the significance of the geometrical parameters of a passive pre-chamber on engine performance, this study investigated the design of a plug-and-play passive pre-chamber in a 15 L heavy-duty natural gas engine.
Wei Li, Junfang Ma, Tao Zhu, Haiqiao Wei, Jiaying Pan   +4 more
doaj   +1 more source

Computational assessment of the effects of pre-chamber and piston geometries on the combustion characteristics of an optical pre-chamber engine

Fuel, 2023
Pre-chamber combustion (PCC) has the potential to extend the lean-burn limit in spark-ignition engines, which can promote engine efficiency and relieve the concern of emissions of nitrogen oxides. This work assessed the effects of pre-chamber (PC) and piston geometries on the combustion characteristics of an optical methane PCC engine with both ...
Xinlei Liu, Manuel Echeverri Marquez, Sangeeth Sanal, Mickael Silva, Abdullah S. AlRamadan, Emre Cenker, Priybrat Sharma, Gaetano Magnotti, James W.G. Turner, Hong G. Im   +9 more
openaire   +2 more sources

Effect of Pre-Chamber Enrichment on Lean Burn Pre-Chamber Spark Ignition Combustion Concept with a Narrow-Throat Geometry [PDF]

SAE Technical Paper Series, 2020
<div class="section abstract"><div class="htmlview paragraph">Pre-chamber spark ignition (PCSI) combustion is an emerging lean-burn combustion mode capable of extending the lean operation limit of an engine. The favorable characteristic of short combustion duration at the lean condition of PCSI results in high efficiencies compared to ...
Ponnya Hlaing, Manuel Echeverri Marquez, Eshan Singh, Fahad Almatrafi, Emre Cenker, Moez Ben Houidi, Bengt Johansson   +6 more
openaire   +2 more sources

Numerical Investigation of the Pre-Chamber and Nozzle Design in the Gasoline Engine of an Agricultural Tractor

Energies, 2022
With the rapid development of agriculture in China today, the demand for agricultural machinery is rapidly increasing. A large amount of exhaust gas emissions poses a severe threat to the environment. To better promote engine fuel and air mixing, enhance
Bowen Zheng, Quan Zhou, Zhenghe Song, Enrong Mao, Zhenhao Luo, Xuedong Shao, Yuxi Liu, Wenjie Li   +7 more
doaj   +1 more source

The Influence of Charge Motion on Pre-Chamber and Main Chamber Combustion in a Highly Dilute Jet Ignition Engine

Frontiers in Mechanical Engineering, 2021
Though there are multiple viable powertrain options available for the automotive sector, those that contain internal combustion engines will continue to account for the majority of global sales for the next several decades.
Michael Bunce, Michael Bunce, Alasdair Cairns, Sai Krishna Pothuraju Subramanyam, Nathan Peters, Hugh Blaxill   +5 more
doaj   +1 more source

Numerical Investigation on the Performance of a 4-Stroke Engine with Different Passive Pre-Chamber Geometries Using a Detailed Chemistry Solver

Energies, 2022
Pre-chamber turbulent jet ignition represents one of the most promising techniques to improve spark ignition engines efficiency and reduce pollutant emissions.
Simone Bigalli, Iacopo Catalani, Francesco Balduzzi, Nicola Matteazzi, Lorenzo Agostinelli, Michele De Luca, Giovanni Ferrara   +6 more
doaj   +1 more source

Experimental Study of Pre-evacuation Effect on Second throat Diffuser Starting Process [PDF]

علوم، فناوری و کاربردهای فضایی, 2022
In the present study, the effect of pre- evacuation on starting process of a second throat exhaust diffuser has been investigated experimentally by examining a thrust optimized parabolic nozzle.
Nematollah Fouladi, sina afkhami, Mahmood PasandidehFard   +2 more
doaj   +1 more source

The use of active jet ignition to overcome traditional challenges of pre-chamber combustors under low load conditions

, 2021
The need for advanced combustion technologies for use in future highly efficient powertrains in the automotive sector is well understood. Pre-chamber combustors, a technology with numerous historic examples, are fast becoming a major area of research ...
Blaxill, Hugh, Cairns, Alasdair, Bunce, Michael   +2 more
core   +1 more source

Effects of passive pre-chamber jet ignition on combustion and emission at gasoline engine

Advances in Mechanical Engineering, 2021
Pre-chamber jet ignition is a promising way to improve fuel consumption of gasoline engine. A small volume passive pre-chamber was tested at a 1.5L turbocharged GDI engine.
Wei Duan, Zhaoming Huang, Hong Chen, Ping Tang, Li Wang, Weiguo Chen   +5 more
doaj   +1 more source