Spark Engine
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. 3D numerical investigation of mixture formation and combustion in a DISI engine at part-load under stratified operation
This work investigates through numerical simulation, the operation of a big bore direct fuel injection spark ignition engine, at part load under stratified operation. It evaluates fuel-air mixture preparation and combustion process with the adoption of detailed chemical kinetics mechanisms for both Isooctane and Ethanol, and applying adaptive mesh refinement
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2020
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2. The performance of hydrogen-powered 4-stroke SI engine using locally designed fuel regulator
In this work, the performance of a spark ignition engine powered with hydrogen fuel was studied and compared with gasoline fuel. Hydrogen fuel was used, using a locally made stainless steel gaseous regulator which was designed and installed in engine. This regulator was located between the engine and the hydrogen fuel cylinder, and it is triggered by the suc
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2010-09
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3. Heat losses minimization from hydrogen fueled 4-stroke spark ignition engines
This paper presents an analytical study to minimize the heat lost during the power stroke of hydrogen-fueled, 4-stroke spark ignition engine. The effects of various design and operating parameters like engine speed, equivalence ratio, ignition timing, compression ratio and spark plug location on heat losses was studied. Then, the effect of heat loss on the e
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2007-03
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4. Desenvolvimento de um equipamento para avaliação do efeito do etanol na pressão de vapor e entalpia de vaporização em gasolinas automotivas
The quality of the gasoline utilized for fueling internal combustion engines with spark ignition is directly affected by the gasoline's properties. Thus, the fuel's properties must be in perfect equilibrium to allow the engine to perform optimally, not only insofar as fuel consumption is concerned, but also in order to reduce the emission of pollutants. Vapo
Química Nova. Publicado em: 2006-06
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5. Desempenho do conjunto motogerador a biogÃs / Acting of the group adapted motorcycle generator biogas
The present work was conducted in the Unity of Production and Use of Biogas, at the Universidade Federal de Lavras. Its objective was to develop and to evaluate the biogas powering system of a 4 -timing stationary motor with 4077W nominal potency to a 4200 rpm rotation,, coupled to a generator of 2400W with operational rotation of 3600rpm. The experiments we
Publicado em: 2006
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6. Análise do aumento da razão volumétrica de compressão de um motor flexível multicombustível visando melhoria de desempenho
Multifuel spark ignition engines fuelled by gasoline and anhydrous ethanol are highly widespread in Brazilian market. Compressed natural gas is also increasing its marketshare due to the installation of adaptive kits in gasoline-fuelled or anhydrous ethanolfuelled engines. However, those adapted engines do not present the best performance for compressed natu
Publicado em: 2005
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7. Nano-structured alloy and composite coatings for high temperature applications
Nano-structured materials often possess special properties that materials with identical compositions but ordinary grain size do not have. This paper reports our work on the surface nano-crystallisation and nano-structured alloy and composite coatings. A number of processing methods including magnetron sputtering, thermal spray and pulse electro-spark deposi
Materials Research. Publicado em: 2004-03
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8. Investigação experimental de gaseificação de biomassa em leito fluidizado
A fluidized-bed biomass gasification pilot-plant was developed and tested, aiming at rural development and sustainable communities. Gasification is a means to increase the efficiency of the energetic use of biomass and allow that its chemical energy be converted into useful mechanical energy and fiom that into electricity. The pilot-plant consists on a gasif
Publicado em: 2004
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9. A new model for Fast-acting electromagnetic fuel injector analysis and design
The electromagnetic fuel injector (EFI) predominates in almost all electronic spark-ignited engine control systems because of its simple, precise and reliable functioning. A new non-linear general mathematical model to predict the EFI performance and to confront its theoretic response with experimental data is proposed. A confrontation to the Element Finite
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2003-03
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10. Automatic fault detection in spark engine using neural network / Detecção automática de falhas em motores de combustão interna utilizando rede neural
This work presents the implementation of an automatic diagnosis tool of some faults founded in spark engine. Firstly, a cinematic study of the fault generating mechanisms is presented, and a partially modal analysis of an engine is illustrated, objectifying to provide information on how the vibratory energy spreads of these mechanisms to the sensor that capt
Publicado em: 1999
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11. Analise exergetica de motores a gasolina e a alcool
In this work a model is developed to simulate the heat transfer, combustion, admission and exhaust processes in spark-ignition internal combustion engines. The model obtained is able to evaluate the thermodynamic properties - including the exergy - of each portion of the working fluid (air, fuel, combustion products and residues). Usual characteristics obtai
Publicado em: 1990