Academia.eduAcademia.edu

Combustion Engine

description43 papers
group81 followers
lightbulbAbout this topic
A combustion engine is a type of heat engine that converts fuel's chemical energy into mechanical energy through the process of combustion, where fuel reacts with an oxidizer, typically air, to produce heat and pressure, driving a piston or turbine to perform work.
lightbulbAbout this topic
A combustion engine is a type of heat engine that converts fuel's chemical energy into mechanical energy through the process of combustion, where fuel reacts with an oxidizer, typically air, to produce heat and pressure, driving a piston or turbine to perform work.

Key research themes

1. How can variable compression ratio (VCR) and active combustion chamber (ACC) technologies improve combustion efficiency and emissions control in spark ignition engines?

This research area focuses on the experimental and theoretical exploration of combustion engines equipped with variable compression ratio mechanisms and active combustion chambers. The significance lies in addressing limitations of fixed geometric compression ratios in conventional spark ignition engines, aiming to optimize heat release processes, reduce detonation, and adapt to varying fuel types and operating conditions to enhance efficiency and emissions performance.

Key finding: Presented a four-stroke air-cooled spark ignition engine with an active combustion chamber (ACC) implementing a rapidly adaptive variable compression ratio via an auxiliary piston and pneumatic spring system, enabling finer... Read more
Key finding: Developed a theoretical cycle model for ACC engines accounting for additional volume changes independent of piston-crank motion, enabling simultaneous realization of constant volume and polytropic combustion phases. This... Read more
Key finding: Investigated configurations of opposed piston internal combustion engines (ICE) focusing on combustion chamber architecture optimizing energetic and ecological performance. The research aimed at low NOx emissions (<3.5... Read more

2. What are the effects of alternative fuels and combustion variability on performance and emissions in internal combustion engines?

This theme investigates the combustion characteristics, cyclic variability, and emissions impact of alternative fuels such as dimethyl ether (DME) and biomass derivatives in internal combustion engines. It emphasizes understanding combustion stability, ignition behavior, and pollutant formation with these fuels to evaluate their viability and optimize engine calibration.

Key finding: Analyzed cyclic variations in a DME-fueled single-cylinder CI engine under different loads and speeds, recording 250 consecutive cycles’ in-cylinder pressure. Found higher cetane number of DME led to reduced ignition delay... Read more
Key finding: Provided a comprehensive energy-based analysis of internal combustion engines fueled by biomass-derived fuels, evaluating sustainability, energy balances, and emission impacts. Addressed challenges in biofuel production... Read more
Key finding: Delivered an extensive survey on combustion fundamentals across gaseous, liquid, and solid fuels, including emerging biofuels. Covered chemical kinetics, pollutant formation, combustion modes, and emission control strategies.... Read more

3. How does intake manifold geometry influence internal combustion engine airflow dynamics and combustion efficiency?

This research theme consolidates computational fluid dynamics (CFD) simulations and experimental validation studies investigating how intake manifold design parameters such as runner length, plenum volume, and cross-sectional geometry affect airflow distribution, volumetric efficiency, torque output, and emissions in internal combustion engines. Insights guide optimized manifold configurations balancing performance, emissions, and manufacturing complexity.

Key finding: Systematic review of 18 peer-reviewed studies (2008-2025) combining CFD and experimental analysis demonstrated that variable-length intake manifolds enhanced volumetric efficiency by 8-15% through tunable Helmholtz resonance... Read more

All papers in Combustion Engine

explain about combustion engine with their classification and component parts.
En el presente trabajo muestran los resultados del análisis de consumo de combustible de la modificación de un motor de combustión para que opere con una mezcla inmiscible de combustible en proporción de 80% agua y 20% gasolina, como... more
Purpose: The whole world is moving towards sustainable and green alternatives the conventional products. When it comes to mobility, electric cars are seen as a sustainable and green alternative. The study aims to analyze the perception of... more
Reducing transport emissions, in particular vehicular emissions, is a key element for mitigating the risks of climate change. In much of the academic and public discourse the focus has been on alternative vehicle technologies and fuels... more
The purpose of this paper is to present the numerical simulation on heat exchanger between the hot air with cold water in an intercooler using perpendicular flow plate fins. In this paper, the structural characteristics of plate fin in... more
Purpose: The whole world is moving towards sustainable and green alternatives the conventional products. When it comes to mobility, electric cars are seen as a sustainable and green alternative. The study aims to analyze the perception of... more
Download research papers for free!