Buscar en RiuNet

Listar

Todo RiuNet

Mi cuenta

Acceder

Ayuda RiuNet

Admin. UPV

Listar por palabra clave "Knock"

Mostrando ítems 1-11 de 11

A fuzzy logic map-based knock control for spark ignition engines

Pla Moreno, Benjamín; Bares-Moreno, Pau; Jimenez, Irina Ayelen; Guardiola, Carlos; Zhang, Y.; Shen, Tielong (Elsevier, 2020-12-15)

[EN] Knock control represents one of the most critical aspects to reach optimal thermal efficiency in spark ignition engines, and its research is crucially important because it determines thermal efficiency, engine durability, ...
A new knock event definition for knock detection and control optimization

Bares-Moreno, Pau; Selmanaj, D; Guardiola, Carlos; Onder, C. (Elsevier, 2018)

[EN] In this paper, the knock phenomenon is studied and characterized in the time-frequency domain. From the analysis results, a new knock event definition is proposed, which compares the excitation of the cylinder resonance ...
Acoustic characterization of combustion chambers in reciprocating engines: An application for low knocking cycles recognition

Novella Rosa, Ricardo; Pla Moreno, Benjamín; Bares-Moreno, Pau; Jimenez, Irina Ayelen (SAGE Publications, 2022-01)

[EN] In this paper the acoustic response of a combustion chamber is studied by assuming different pressure field excitation. The viscous effects on the combustion chamber and the finite impedance of the walls have been ...
An analysis of the in-cylinder pressure resonance excitation in internal combustion engines

Guardiola, Carlos; Pla Moreno, Benjamín; Bares-Moreno, Pau; Barbier, Alvin Richard Sebastien (Elsevier, 2018)

[EN] This paper analyses the in-cylinder pressure oscillations in internal combustion engines, which are initiated by combustion and resonate during the expansion stroke. A specific mathematical tool, which takes into ...
Development of a Virtual CFR Engine Model for Knocking Combustion Analysis

Pal, Pinaki; Kolodziej, Christopher; Choi, Seungmok; Som, Sibendu; Broatch, A.; Gómez-Soriano, Josep; Wu, Yunchao; Lu, Tianfeng; See, Yee Chee (SAE International, 2018)

[EN] Knock is a major bottleneck to achieving higher thermal efficiency in spark-ignited (SI) engines. The overall tendency to knock is highly dependent on fuel anti-knock quality as well as engine operating conditions. ...
Effect of Dibutyl Ether - Methanol Blend Ratios on Deflagration-Based and Autoignition-Based Knock in Spark-Ignition Engines

Singh, Eshan; Abboud, Rami; Strickland, Tyler; Kim, Namho; López Pintor, Darío; Sjöberg, Magnus (Elsevier, 2024-11-15)

[EN] Methanol is an attractive fuel that can be produced using renewable sources. However, its low reactivity may present challenges to combustion modes (like Spark-Assisted Compression Ignition) that rely on autoignition. ...
Increasing knock detection sensitivity by combining knock sensor signal with a control oriented combustion model

Pla Moreno, Benjamín; Bares-Moreno, Pau; Jimenez, Irina Ayelen; Guardiola, Carlos (Elsevier, 2022-04-01)

[EN] Knock phenomenon reduces the thermal efficiency and restricts performance improvement in spark-ignited engines. Reliable and rapid knock recognition is crucial for the engine knock control. Among the wide set of knock ...
Knock probability estimation through an in-cylinder temperature model with exogenous noise

Bares-Moreno, Pau; Selmanaj, D; Guardiola, Carlos; Onder, C (Elsevier, 2018)

[EN] This paper presents a new knock model which combines a deterministic knock model based on the in-cylinder temperature and an exogenous noise disturbing this temperature. The autoignition of the end-gas is modelled by ...
Knock recognition based on vibration signal and Wiebe function in a heavy-duty spark ignited engine fueled with Methane

Napolitano, Pierpaolo; Jimenez, Irina Ayelen; Pla Moreno, Benjamín; Beatrice, Carlo (Elsevier, 2022-05-01)

[EN] Increasing demands on higher performance and lower fuel consumption and emissions have lead the path for internal combustion engine development; this race is nowadays directly related of CO2 emissions reduction. In ...
Low knocking cycles recognition methods based on in-cylinder pressure resonance analysis

Jiménez, Irina Ayelén (Universitat Politècnica de València, 2021-11-24)

[ES] El knock es un fenómeno anormal en los motores de encendido por chispa que debe evitarse para proteger el motor de daños y evitar un ruido excesivo. Los algoritmos de control convencionales retrasan la combustión ...
Numerical simulations for evaluating the impact of advanced insulation coatings on H2 additivated gasoline lean combustion in a turbocharged

Broatch, A.; Olmeda, P.; Margot, Xandra; Gómez-Soriano, Josep (Elsevier, 2019)

[EN] This paper presents a numerical methodology based on Computational Fluid Dynamics (CFD) simulations to understand the physics of heat losses through the cylinder walls coated with different materials, taking into ...