A Parametric Study of an Exhaust Recovery Turbogenerator on a Diesel-Electric Hybrid Bus

2013 ◽  
Author(s):  
Ian Briggs ◽  
Geoffrey McCullough ◽  
Stephen Spence ◽  
Roy Douglas ◽  
Richard O’Shaughnessy ◽  
...  
Keyword(s):  
Fuel Consumption ◽  
Fuel Economy ◽  
Parametric Study ◽  
Fuel Prices ◽  
Engine Model ◽  
Toxic Emissions ◽  
Exhaust Line ◽  
In Series ◽  
Hybrid Bus ◽  
Economy Benefit

The fuel consumption of automotive vehicles has become a prime consideration to manufacturers and operators as fuel prices continue to rise steadily, and legislation governing toxic emissions becomes ever more strict. This is particularly true for bus operators as government fuel subsidies are cut or removed. In an effort to reduce the fuel consumption of a diesel-electric hybrid bus, an exhaust recovery turbogenerator has been selected from a wide ranging literature review as the most appropriate method of recovering some of the wasted heat in the exhaust line. This paper examines the effect on fuel consumption of a turbogenerator applied to a 2.4-litre diesel engine. A validated one-dimensional engine model created using Ricardo WAVE was used as a baseline, and was modified in subsequent models to include a turbogenerator downstream, and in series with, the turbocharger turbine. A fuel consumption map of the modified engine was produced, and an in-house simulation tool was then used to examine the fuel economy benefit delivered by the turbogenerator on a bus operating on various drive-cycles. A parametric study is presented which examined the performance of turbogenerators of various size and power output. The operating strategy of the turbogenerator was also discussed with a view to maximising turbine efficiency at each operating point. The performance of the existing turbocharger on the hybrid bus was also investigated; both the compressor and turbine were optimised and the subsequent benefits to the fuel consumption of the vehicle were shown. The final configuration is then presented and the overall improvement in fuel economy of the hybrid bus was determined over various drive-cycles.

Simulation and Analysis of the Hybrid Bus Performance Based on AVL-Cruise

2013 ◽  
Vol 712-715 ◽  
pp. 1221-1225 ◽  
Author(s):  
Kai Yu ◽  
Chang Qing Song ◽  
Lu Yan Fan ◽  
Hao Qin
Keyword(s):  
Fuel Consumption ◽  
Hybrid System ◽  
Fuel Economy ◽  
Control Strategy ◽  
Dynamic Performance ◽  
Hybrid Vehicle ◽  
Simulation Data ◽  
Hybrid Bus ◽  
Avl Cruise ◽  
Fuel Consumption And Emissions

Recently, due to the reduction of oil and the deterioration of environment, people raised higher request for fuel economy and emissions, hybrid vehicle developed rapidly in most countries because of its low fuel consumption and emissions. In order to develop appropriate hybrid system, the text builds the model of prototype bus in the AVL-Cruise platform first, and then, establishes the model of PHB and accomplishes the control strategy of vehicle in the MATLAB/SIMULINK environment. The simulation data indicates: PHB can improve the fuel economy and emission performance effectively with guaranteeing a good dynamic performance of bus.

scholarly journals PENGHEMAT BAHAN BAKAR DENGAN MENGGUNAKAN PIPA KATALIS METODE HYDROCARBON CRACK SYSTEM GANDA PADA SEPEDA MOTOR 4 TAK 160 CC

2019 ◽  
Vol 2 (2) ◽  
pp. 1
Author(s):  
Sena Mahendra ◽  
Fahmy Fatra ◽  
Akhmad Riszal Riszal ◽  
Didik Rohmantoro
Keyword(s):  
Fuel Consumption ◽  
Engine Speed ◽  
Engine Performance ◽  
Fuel Saving ◽  
Pipe Length ◽  
Engine Torque ◽  
Fuel Prices ◽  
Performance Time ◽  
In Series ◽  
High Octane

Motorized vehicles with economical fuel, agile, fast, and practical are some of the main factors consumers determine the choice of buying a motorcycle. People who own motorcycles under 2000 have not been equipped with fuel-saving devices, so they are wasteful of fuel and must be smart to save fuel. Many motorcycle manufacturers release the newest fuel-efficient products, but they affect the engine's performance. The price of premium fuel types is Rp. 6,500.00 per liter, petalite Rp. 7,600.00 per liter, firstly Rp. 8,900.00 per liter, and Pertamax turbo Rp. 10,100.00 per liter. High fuel prices encourage researchers to make various fuel-saving innovations. The purpose of this study is to develop an HCS catalyst pipe design double spiral model arranged in series to save fuel above 67% on a 4 stroke motorcycle without affecting the engine performance. The research method uses independent variables with engine speed, pipe length, pipe diameter, and Pertamax volume. Dependent variable by testing engine torque and power, fuel consumption time, temperature, and noise of the 156.7cc Mega Pro motorcycle. The addition of dual HCS catalyst spiral pipes and Pertamax volumes adds to engine performance time. At a length of 500 mm and 2000 ml, the Pertamax volume for the engine speed of 3500 rpm is only able to save fuel by 52.52%. The most optimal HCS double catalyst spiral pipe design is a 500 cm long pipe with a volume of Pertamax 2000 ml. In addition to engine performance time on the catalyst spiral pipe design can increase engine torque and power by 92.3% at 3500 rpm and reduce the temperature by 12.34% at 6000 rpm, and 1.93% noise at 4000 rpm. Increasing the double HSC catalyst spiral pipe and Pertamax volume can increase the hydrocarbon content of fuel entering the combustion chamber supplied from Pertamax vapor. Premium fuel (C8H18) plus Pertamax vapors. This makes the fuel content has a high octane value, greater engine power, and low fuel consumption. A high octane value affects perfect engine combustion, reduced knocking, low engine temperature, and decreased noise.Kendaraan bermotor dengan bahan bakar yang irit, lincah, cepat, dan praktis merupakan salah satu faktor utama konsumen menentukan pilihan membeli sepeda motor. Masyarakat yang memiliki sepeda motor di bawah tahun 2000 belum dilengkapi dengan alat penghemat bahan bakar, sehingga boros bahan bakar dan harus pintar menghemat bahan bakar. Banyak produsen sepeda motor yang mengeluarkan produk terbarunya paling irit bahan bakar, tetapi mempengaruhi performa mesinnya. Harga bahan bakar jenis premium Rp. 6.500,00 per liter, pertalite Rp. 7.600,00 per liter, pertamax Rp. 8.900,00 per liter, dan pertamax turbo Rp. 10.100,00 per liter. Harga bahan bakar yang tinggi mendorong peneliti melakukan berbagai inovasi penghemat bahan bakar.Tujuan penelitian ini mengembangkan desain pipa katalis HCS model spiral ganda yang disusun seri sehingga mampu menghemat bahan bakar diatas 67% pada sepeda motor 4 tak tanpa mempengaruhi performa mesin. Metode penelitian menggunakan variabel bebas dengan putaran mesin, panjang pipa, diameter pipa, dan volume pertamax. Variabel terikat dengan menguji torsi dan daya mesin, waktu konsumsi bahan bakar, temperatur, dan kebisingan sepeda motor Mega Pro 156,7cc. Penambahan pipa spiral katalis HCS ganda dan volume pertamax menambah waktu performa mesin. Pada panjang 500 mm dan 2000 ml volume pertamax untuk kecepatan putaran mesin 3500  rpm hanya mampu menghemat bahan bakar sebesar  52,52%. Desain pipa spiral katalis HCS ganda  yang paling optimal dari yaitu pipa dengan panjang 500 cm dan volume pertamax 2000 ml. Selain waktu performa mesin pada desain pipa spiral katalis ini dapat meningkatkan torsi dan daya mesin sebesar 92,3% pada putaran 3500 rpm serta mengurangi temperatur 12,34% pada putaran 6000 rpm, dan kebisingan 1,93% pada putaran 4000 rpm. Bertambahnya pipa spiral katalis HSC ganda dan volume pertamax dapat meningkatnya kandungan hidrokarbon bahan bakar yang masuk ke ruang pembakaran disuplay dari uap pertamax. Bahan bakar premium (C8H18) di tambah uap pertamax.menjadikan kandungan bahan bakar memiliki nilai oktan tinggi, daya mesin yang lebih besar dan komsumsi bahan bakar rendah. Nilai oktan tinggi mempengaruhi pembakaran mesin sempurna, knocking berkurang, temperatur mesin rendah, dan kebisingan menurun

scholarly journals Model-based estimation of light-duty vehicle fuel economy at high altitude

2019 ◽  
Vol 11 (11) ◽  
pp. 168781401988625 ◽  
Author(s):  
Lijun Hao ◽  
Chunjie Wang ◽  
Hang Yin ◽  
Chunxiao Hao ◽  
Haohao Wang ◽  
...  
Keyword(s):  
Internal Combustion Engine ◽  
Fuel Consumption ◽  
Fuel Economy ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Specific Fuel Consumption ◽  
Brake Specific Fuel Consumption ◽  
Engine Model ◽  
Light Duty ◽  
Light Duty Vehicle

In order to estimate the light-duty vehicle fuel economy at high-altitude areas, the coast-down tests of a passenger car on level road were conducted at different elevations, and the coast-down resistance coefficients were calculated. Furthermore, a fuel economy model for a light-duty vehicle adopting backward simulation method was developed, and it mainly consists of vehicle dynamic model, internal combustion engine model, transmission model, and differential model. The internal combustion engine model consists of the brake-specific fuel consumption maps as functions of engine torque and engine speed, and the brake-specific fuel consumption map near sea level was constructed based on engine experimental data, and the brake-specific fuel consumption maps at high altitudes were calculated by GT-Power Modeling of the internal combustion engine. The fuel consumption rate was calculated from the brake-specific fuel consumption maps and brake power and used to calculate the fuel economy of the light-duty vehicle. The model predicted fuel consumption data met well with the test results, and the model prediction errors are within 5%.

A Simulation Study Quantifying the Effects of Drive Cycle Characteristics on the Performance of a Pneumatic Hybrid Bus

2010 ◽  
Author(s):  
Sasa Trajkovic ◽  
Per Tunesta˚l ◽  
Bengt Johansson
Keyword(s):  
Experimental Data ◽  
New York ◽  
Fuel Consumption ◽  
Combustion Engine ◽  
Drive Cycle ◽  
Hybrid Powertrain ◽  
Engine Model ◽  
Cycle Simulation ◽  
Hybrid Bus ◽  
Engine Testing

In the study presented in this paper, the effect of different vehicle driving cycles on the pneumatic hybrid has been investigated. The pneumatic hybrid powertrain has been modeled in GT-Power and validated against experimental data. The GT-Power engine model has been linked with a MATLAB/simulink vehicle model. The engine in question is a single-cylinder Scania D12 diesel engine, which has been converted to work as a pneumatic hybrid. The base engine model, provided by Scania, is made in GT-power and it is based on the same engine configuration as the one used in real engine testing. Earlier studies have shown a great reduction in fuel consumption with the pneumatic hybrid compared to conventional vehicles of today. However, most of these studies have been completely of theoretical nature. In this paper, the engine model is based on and verified against experimental data, and therefore more realistic results can be expected. The intent with the vehicle driving cycle simulation is to investigate the potential of a pneumatic hybrid bus regarding reduction in fuel consumption (FC) compared to a traditional internal combustion engine (ICE) powered bus. The results show that the improvement in fuel economy due to pneumatic hybridization varies heavily with choice of drive cycle. The New York bus drive cycle shows a reduction of up to 58% for the pneumatic hybrid while the FIGE drive cycle only shows a reduction of 8%. What all cycles have in common is that the main part of the fuel consumption reduction comes from the start/stop-functionality, while regenerative braking only account for a modest part of up to about 12% of the fuel consumption. The results also show that the optimal pressure tank volume varies with drive cycles, ranging from 60 to over 500 liters.

Parametric Study of Cylinder Deactivation and Valve Deactivation for Unthrottled Operation

2012 ◽  
Vol 614-615 ◽  
pp. 525-528
Author(s):  
Ahmad Solehin Paimon ◽  
Wira Jazair ◽  
Srithar Rajoo
Keyword(s):  
Internal Combustion Engine ◽  
Fuel Consumption ◽  
Fuel Economy ◽  
Parametric Study ◽  
Combustion Engine ◽  
Transient Operation ◽  
Si Engine ◽  
Cylinder Deactivation ◽  
Part Load ◽  
Induction Strategy

Cylinder deactivation (CDA) as well as valve deactivation (VDA) technologies provides big potentials to decrease fuel consumption and emission at part load operation for SI engine. In real driving situation, an internal combustion engine operates in transient operation where the load and speed varies continuously. This part load operation leads the engine to have poor fuel consumption and emission due to throttle pumping losses. This paper will investigate the further potential of both induction strategy, cylinder deactivation and valve deactivation in extending the fuel economy at part load.

Impact of Heavy-Duty Diesel Truck Activity on Fuel Consumption and Its Implication for the Reduction of Greenhouse Gas Emissions

2019 ◽  
Vol 2673 (3) ◽  
pp. 125-135 ◽  
Author(s):  
Sonya Collier ◽  
Chris Ruehl ◽  
Seungju Yoon ◽  
Kanok Boriboonsomsin ◽  
Thomas D. Durbin ◽  
...  
Keyword(s):  
Greenhouse Gas ◽  
Fuel Consumption ◽  
Fuel Economy ◽  
Phase 1 ◽  
Average Standard Deviation ◽  
Activity Data ◽  
Engine Model ◽  
Heavy Duty Diesel ◽  
Model Year ◽  
Haul Truck

Activity data from 79 line-haul and vocational trucks were analyzed to estimate trip-averaged fuel consumption per distance driven and per work performed. The 79 trucks had engine model years ranging from 2008 to 2015 and average (±standard deviation) miles per gallon of 5.5 ± 1.7, which is comparable to other large fleet studies. Engine output work used to overcome various forms of resistance was minimized at vehicle speeds between 54 and 60 mph, which led to best fuel economy. The average gallons-per-brake horsepower-hour (gal/BHP-HR) was 0.058 ± 0.0085. When comparing the gal/BHP-HR per trip speed, higher average trip speeds led to improved fuel economy (lower gal/BHP-HR). In the case of out-of-state line-haul trucks, fuel economy was also dependent on model year. The newer model year out-of-state line-haul truck (2014) had a significant improvement in fuel economy compared with the older model year trucks (2012 and 2013). This could be the result of more stringent CO2 emission standards beginning for model year 2014 trucks under the Phase 1 Greenhouse Gas rule, but data on more vehicles would further corroborate this. The trip-averaged CO2 emissions were calculated for each truck and it was found that some truck groups displayed consistent trip-averaged emissions whereas others displayed high variability despite belonging to the same fleet. Several of the trucks engaged in significant idling, with a median contribution to their CO2 emissions of 4.2%.

Match and Optimization of Series Hybrid Bus Powertrain Parameters

2011 ◽  
Vol 121-126 ◽  
pp. 2710-2714
Author(s):  
Ling Cai ◽  
Xin Zhang
Keyword(s):  
Electric Vehicle ◽  
Fuel Economy ◽  
Hybrid Electric Vehicle ◽  
Simulation Platform ◽  
Optimal Method ◽  
Orthogonal Method ◽  
Series Hybrid Electric Vehicle ◽  
Hybrid Bus ◽  
Promising Solution ◽  
Hybrid Electric

With the requirements for reducing emissions and improving fuel economy, it has been recognized that the electric, hybrid electric powered drive train technologies are the most promising solution to the problem of land transportation in the future. In this paper, the parameters of series hybrid electric vehicle (SHEV), including engine-motor, battery and transmission, are calculated and matched. Advisor software is chosen as the simulation platform, and the major four parameters are optimized in orthogonal method. The results show that the optimal method and the parameters can improve the fuel economy greatly.

An Improvement of Part Load Performance of Diesel Engines Operating at Constant Speed Conditions

1994 ◽  
Vol 208 (1) ◽  
pp. 21-25 ◽  
Author(s):  
A A Abdel-Rahman ◽  
M K Ibrahim ◽  
A A Said
Keyword(s):  
Fuel Consumption ◽  
Diesel Engines ◽  
Petroleum Refining ◽  
Specific Fuel Consumption ◽  
Constant Speed ◽  
Maximum Pressure ◽  
Brake Specific Fuel Consumption ◽  
Part Load ◽  
Generating Sets ◽  
In Series

This paper discusses the possibility of improving the part load performance of diesel electric turbocharged engines operating at constant speed conditions. A sequential turbocharged system is proposed, where the compressors are connected In series. The study focused on two turbocharged diesel–electric generating sets existing at Ameria Petroleum Refining Company in Alexandria, Egypt. The results of the prediction showed that, at part load, both the maximum pressure and temperature were increased, and the brake specific fuel consumption was reduced considerably (by about 10 per cent).

An adaptive equivalent consumption minimization strategy considering catalyst temperature for plug-in hybrid electric vehicle

2021 ◽  
pp. 095440702110434
Author(s):  
Tao Deng ◽  
Ke Zhao ◽  
Haoyuan Yu
Keyword(s):  
Fuel Consumption ◽  
Electric Vehicle ◽  
Fuel Economy ◽  
Hybrid Electric Vehicle ◽  
Test Procedure ◽  
Catalyst Temperature ◽  
Equivalent Factor ◽  
Simulation Results ◽  
Hybrid Electric ◽  
Equivalent Consumption Minimization Strategy

In the process of sufficiently considering fuel economy of plug-in hybrid electric vehicle (PHEV), the working time of engine will be reduced accordingly. The increased frequency that the three-way catalytic converter (TWCC) works in abnormal operating temperature will lead to the increasing of emissions. This paper proposes the equivalent consumption minimization strategy (ECMS) to ensure the catalyst temperature of PHEV can work in highly efficient areas, and the influence of catalyst temperature on fuel economy and emissions is considered. The simulation results show that the fixed equivalent factor of ECMS has great limitations for the underutilized battery power and the poor fuel economy. In order to further reduce fuel consumption and keep the emission unchanged, an equivalent factor map based on initial state of charge (SOC) and vehicle mileage is established by the genetic algorithm. Furthermore, an Adaptive changing equivalent factor is achieved by using the following strategy of SOC trajectory. Ultimately, adaptive equivalent consumption minimization strategy (A-ECMS) considering catalyst temperature is proposed. The simulation results show that compared with ordinary ECMS, HC, CO, and NOX are reduced by 14.6%, 20.3%, and 25.8%, respectively, which effectively reduces emissions. But the fuel consumption is increased by only 2.3%. To show that the proposed method can be used in actual driving conditions, it is tested on the World Light Vehicle Test Procedure (WLTC).

Numerical and Experimental Study on the Impact of Mild Cold EGR on Exhaust Emissions in a Biodiesel Fueled Diesel Engine

2021 ◽  
Author(s):  
Alex Oliveira ◽  
Junfeng Yang ◽  
Jose Sodre
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Exhaust Emissions ◽  
Pollutant Emissions ◽  
Cylinder Pressure ◽  
Nox Formation ◽  
Ratio Distribution ◽  
Engine Model ◽  
Gas Recirculation ◽  
The Impact

Abstract This work evaluated the effect of cooled exhaust gas recirculation (EGR) on fuel consumption and pollutant emissions from a diesel engine fueled with B8 (a blend of biodiesel and Diesel 8:92%% by volume), experimentally and numerically. Experiments were carried out on a Diesel power generator with varying loads from 5 kW to 35 kW and 10% of cold EGR ratio. Exhaust emissions (e.g. THC, NOX, CO etc.) were measured and evaluated. The results showed mild EGR and low biodiesel content have minor impact of engine specific fuel consumption, fuel conversion efficiency and in-cylinder pressure. Meanwhile, the combination of EGR and biodiesel reduced THC and NOX up to 52% and 59%, which shows promising effect on overcoming the PM-NOX trade-off from diesel engine. A 3D CFD engine model incorporated with detailed biodiesel combustion kinetics and NOx formation kinetics was validated against measured in-cylinder pressure, temperature and engine-out NO emission from diesel engine. This valid model was then employed to investigate the in-cylinder temperature and equivalence ratio distribution that predominate NOx formation. The results showed that the reduction of NOx emission by EGR and biodiesel is obtained by a little reduction of the local in-cylinder temperature and, mainly, by creating comparatively rich combusting mixture.

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