Influence of Hot Burned Gas Utilization on the Exhaust Emission Characteristics of a Controlled Auto-Ignition Two-Stroke Cycle Engine

Andwari, Amin Mahmoudzadeh; Aziz, Azhar Abdul; Said, Mohd Ismid Mohd; Latiff, Zulkanai Abdul; Ghanaati, Ali

doi:10.15282/ijame.11.2015.20.0201

Cited by 12 publications

(9 citation statements)

References 29 publications

(47 reference statements)

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“…MicroTurbine operated by natural gas fuel at full load power and ISO conditions (as Capstone Turbine Corporation declares), which defines the cycle design point of the MGT chosen [30,[34][35][36][37][38][39][40]. Starting from these data, using the commercial software called GASTURB11 (GasTurb11), the model of this MGT at the design point is built.…”

Section: Represents Performance Of Capstone Model C30mentioning

confidence: 99%

Application of Micro Gas Turbine in Range-Extended Electric Vehicles

Karvountzis-Kontakiotis

Andwari

Pesyridis

et al. 2018

Energy

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The increasing number of passenger cars worldwide and the consequent increasing rate of global oil consumption have raised the attention on fuel prices and have caused serious problems to the environment. Nowadays, the demand for reducing fuel consumption and pollutant emissions has paved the way to the development of more efficient power generation systems for the transportation sector. The lower fuel burning and pollutant emissions of hybrid electric vehicles give a strong motivation and encourage further investigations in this field. This research aims to investigate novel configurations, which could achieve further performance benefits for vehicle powertrain. Automakers claim that the employment of a gas turbine operating as range extender in a series hybrid configuration is the most efficiency solution in the coming years. In particular, a Micro Gas Turbine (MGT) can be considered as an alternative to the internal combustion engine (ICE) as a range extender for electric vehicles. The MGT produces less raw exhaust gaseous emissions such as HC and CO and static applications compared to the ICE. In addition, the MGT weight is lower than an equivalent ICE and potentially can reduce the level of CO2 especially in a vehicle application. This study presents a parametric study of MGT applications for Range-Extended Electric Vehicle (REEV). The main objective is to examine the MGT performance to meet the requirements for a REEV that could become competitive, in terms of fuel consumption and pollutant emissions, to equivalent diesel or gasoline hybrid propulsion units or to conventional diesel vehicle.

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Section: Represents Performance Of Capstone Model C30mentioning

confidence: 99%

Application of Micro Gas Turbine in Range-Extended Electric Vehicles

Karvountzis-Kontakiotis

Andwari

Pesyridis

et al. 2018

Energy

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“…Using VVT system and the VO mechanism, especially in the cold start phase, the volumetric efficiency of the engine is increased, and thus the engine speed and exhaust gases flow are increased, and the catalytic converter is heated up faster and reduce cumulative exhaust emissions. Besides, the EGR (exhaust gas recirculation) can be applied with proper control of this system and therefore NOx and HC harmful emissions are reduced [13,14]. This control strategy is applied in the form of a controller called the fuzzy controller to the model.…”

Section: Introductionmentioning

confidence: 99%

Modelling and Fuzzy-Threshold Control of SI Engine for Emission Reduction during Cold Start Phase

Khalilikhah

Shalchian

2019

IJAME

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We present a controllable model of an internal combustion engine that captures the overlapping of the cylinder valves as a controllable parameter and its effect on engine efficiency and EGR rates. The model parameters have been calibrated for the EF7 engine and validated with experimental data. This model successfully estimates the performance and HC and NOx emissions concentration of the engine under cold start operating condition. A model-based fuzzy-threshold control strategy has been proposed in cold start operating condition. This strategy uses the overlapping angle of the cylinder inlet and outlet valves as an extra degree of freedom in comparison to the regular PID strategy in order to accelerate the warm-up duration the catalyst converter while reduces the exhaust harmful emissions during the warm-up phase. The proposed controller model has been verified in MATLAB Simulink environment and simulation results indicates 8.6% reduction of the start-up time of the catalyst converter and reduction of 3.5%, 8.5% and 7% of HC, NO and fuel consumption respectively during the catalyst warm-up phase.

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“…The former leads to unstable engine operation (cycle-to-cycle variation) combined with incomplete combustion, especially at idle and light engine loads. The latter is fuel short circuit at medium and full engine loads [9][10][11][12][13][14][15]. However, due to the short-circuiting of the fuel before combustion, this has resulted in deterioration in the engine's overall performances, especially poor combustion efficiency and high white smoke emission problem [16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Effect of internal and external EGR on cyclic variability and emissions of a spark ignition two-stroke cycle gasoline engine

Andwari¹,

Vehicle²,

Aziz³

et al. 2017

J. MECH. ENG. SCI.

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Conventional two-stroke cycle engine suffers from typical drawbacks including lower combustion efficiency and excessive emissions of uHC and CO which are largely due to low in-cylinder average charge temperature at low load and speed regions of engine operating conditions. Utilising the hot burned Exhaust Gas Recirculation (EGR) technique can boost the in-cylinder average charge temperature of the engine. The influence of hot burned gases applied by means of both Internal EGR and External EGR strategies on the combustion stability and exhaust gas emission of a single-cylinder twostroke cycle engine running at low-load and mid-load of operating conditions was investigated experimentally along with simulation works using 1-D engine simulation code. The results indicated that both In-EGR and Ex-EGR improved the combustion stability (lower misfire cycle) and decreased the concentrations of uHC and CO emissions, specifically at low speed region; however, NOx concentration was increased. At Internal EGR setting of 30%, the Coefficient of Variation for maximum in-cylinder pressure (COVPmax) reached the minimum by 5.64 while when External EGR percentage was 25%, COVPmax approached about 6.67 at the mid-speed (2000 rpm) of engine operating condition.

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Influence of Hot Burned Gas Utilization on the Exhaust Emission Characteristics of a Controlled Auto-Ignition Two-Stroke Cycle Engine

Cited by 12 publications

References 29 publications

Application of Micro Gas Turbine in Range-Extended Electric Vehicles

Application of Micro Gas Turbine in Range-Extended Electric Vehicles

Modelling and Fuzzy-Threshold Control of SI Engine for Emission Reduction during Cold Start Phase

Effect of internal and external EGR on cyclic variability and emissions of a spark ignition two-stroke cycle gasoline engine

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