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13 Results Found

  • Article
  • Open Access
15 Citations
3,372 Views
24 Pages

The Effect of Pure Oxygenated Biofuels on Efficiency and Emissions in a Gasoline Optimised DISI Engine

  • Tara Larsson,
  • Senthil Krishnan Mahendar,
  • Anders Christiansen-Erlandsson and
  • Ulf Olofsson

29 June 2021

The negative impact of transport on climate has led to incentives to increase the amount of renewable fuels used in internal combustion engines (ICEs). Oxygenated, liquid biofuels are promising alternatives, as they exhibit similar combustion behavio...

  • Article
  • Open Access
4 Citations
2,717 Views
22 Pages

11 November 2021

The utilisation of internal combustion engines is one of the main causes of particle emissions in urban areas. As the interest for the utilisation of biofuels increases, it is important to understand their effect on particle number emissions. In this...

  • Article
  • Open Access
15 Citations
4,910 Views
21 Pages

19 August 2020

In the upcoming years, more challenging CO2 emission targets along with the introduction of more severe Real Driving Emissions limits are expected to foster the development and the exploitation of innovative technologies to further improve the effici...

  • Article
  • Open Access
7 Citations
3,734 Views
25 Pages

An Analysis of Mechanical and Thermal Stresses, Temperature and Displacement within the Transparent Cylinder and Piston Top of a Small Direct-Injection Spark-Ignition Optical Engine

  • Ravi Velugula,
  • Balasubramanian Thiruvallur loganathan,
  • Lakshminarasimhan Varadhaiyengar,
  • Ramesh Asvathanarayanan and
  • Mayank Mittal

2 November 2023

Two- and three-wheeled vehicles account for a significant portion of the automobile market in several countries worldwide. In order to advance the capabilities of these vehicles, the integration of direct-injection (DI) technology is essential, given...

  • Article
  • Open Access
8 Citations
3,163 Views
15 Pages

14 August 2024

Methanol has significant potential as an alternative fuel for internal combustion engines. Using methanol–gasoline blends with lean-burn technology in traditional spark-ignition engines can enhance fuel economy and reduce emissions. This paper...

  • Article
  • Open Access
17 Citations
5,433 Views
20 Pages

8 July 2019

Apart from electric vehicles, most internal combustion (IC) engines are powered while burning petroleum-based fossil or alternative fuels after mixing with inducted air. Thereby the operations of mixing and combustion evolve in a turbulent flow envir...

  • Feature Paper
  • Article
  • Open Access
14 Citations
6,480 Views
19 Pages

22 June 2017

Within the context of ever wider expansion of direct injection in spark ignition engines, this investigation was aimed at improved understanding of the correlation between fuel injection strategy and emission of nanoparticles. Measurements performed...

  • Article
  • Open Access
16 Citations
3,285 Views
32 Pages

12 January 2021

This paper offers new insights into a partial fuel stratification (PFS) combustion strategy that has proven to be effective at stabilizing overall lean combustion in direct injection spark ignition engines. To this aim, high spatial and temporal reso...

  • Article
  • Open Access
1 Citations
1,438 Views
14 Pages

18 January 2025

Methanol is widely recognized as a promising alternative fuel for achieving carbon neutrality in internal combustion engines. Its use in direct injection spark-ignition (DISI) engines, either as pure methanol or blended fuels, has demonstrated improv...

  • Article
  • Open Access
3 Citations
4,283 Views
17 Pages

Lean Burn Flame Kernel Characterization for Different Spark Plug Designs and Orientations in an Optical GDI Engine

  • Giovanni Cecere,
  • Adrian Irimescu,
  • Simona Silvia Merola,
  • Luciano Rolando and
  • Federico Millo

6 May 2022

Lean burn spark ignition (SI) engines represent an effective solution for improving fuel economy and reducing exhaust emissions and can be implemented both in conventional and hybrid powertrains. On the other hand, lean operation increases cyclic var...

  • Article
  • Open Access
4 Citations
2,940 Views
16 Pages

6 April 2023

The wall-impingement phenomenon significantly impacts mixture formation, combustible performance, and pollutant release in DISI engines. However, there is insufficient knowledge regarding the behavior of fuel adhesion. Thus, here, we examine adhesive...

  • Feature Paper
  • Article
  • Open Access
37 Citations
10,029 Views
23 Pages

Flame Front Propagation in an Optical GDI Engine under Stoichiometric and Lean Burn Conditions

  • Santiago Martinez,
  • Adrian Irimescu,
  • Simona Silvia Merola,
  • Pedro Lacava and
  • Pedro Curto-Riso

5 September 2017

Lean fueling of spark ignited (SI) engines is a valid method for increasing efficiency and reducing nitric oxide (NOx) emissions. Gasoline direct injection (GDI) allows better fuel economy with respect to the port-fuel injection configuration, throug...

  • Article
  • Open Access
14 Citations
3,933 Views
15 Pages

Analysis of the LIF/Mie Ratio from Individual Droplets for Planar Droplet Sizing: Application to Gasoline Fuels and Their Mixtures with Ethanol

  • Matthias Koegl,
  • Kevin Baderschneider,
  • Florian J. Bauer,
  • Bernhard Hofbeck,
  • Edouard Berrocal,
  • Stefan Will and
  • Lars Zigan

15 November 2019

In this work, the possibility of using planar droplet sizing (PDS) based on laser-induced fluorescence (LIF) and Mie scattering was investigated within the framework of measuring the droplet Sauter mean diameter (SMD) of direct-injection spark-igniti...