Emission Performance of a Diesel Engine with Pressure-Wave Supercharger

2011 ◽  
Vol 383-390 ◽  
pp. 6168-6173
Author(s):  
Yan Lei ◽  
Hong Guang Zhang ◽  
Da Sen Zhou ◽  
Xiao Lei Bai
Keyword(s):  
Diesel Engine ◽  
Experimental Test ◽  
Pressure Wave ◽  
Engine Speed ◽  
3D Model ◽  
Cfd Simulation ◽  
Test Results ◽  
Turbocharged Diesel Engine ◽  
Emission Performance ◽  
Simulation Results

Pressure-wave supercharger (PWS) is one technical way to boost the engine intake air pressure. PWS has several advantages such as less emission (especially NOx emission), rapid response when load changes, higher torque even at low engine speed. In this research a 493 diesel engine is charged by a pressure-wave supercharger (PWS). The emission performance of the PWS diesel engine is mainly investigated. Together with experimental test, the CFD simulation is completed basing on a 3D model of the PWS rotor channel. The CFD simulation results show that the inner EGR phenomenon happens especially when PWS runs at middle PWS rotational speed with part load. The test results demonstrate that the PWS diesel engine performs well with less NOx and soot emissions than the turbocharged diesel engine.

Performance of a direct injection diesel engine fuelled with a dimethyl ether/diesel blend

2003 ◽  
Vol 217 (9) ◽  
pp. 819-824 ◽  
Author(s):  
Wang Hewu ◽  
Zhou Longbao
Keyword(s):  
Diesel Engine ◽  
Dimethyl Ether ◽  
Engine Speed ◽  
Direct Injection ◽  
Test Results ◽  
Di Diesel Engine ◽  
Hc Emissions ◽  
Blend Fuel ◽  
Co Emission ◽  
Diesel Operation

A quantity of 10 per cent dimethyl ether (DME) was added to diesel fuel, and an investigation of the performance of a direct injection (DI) diesel engine fuelled with blend fuel was carried out. The test results showed that, in comparison with diesel operation, the torque at low engine speed was increased; the brake specific fuel consumption (b.s.f.c.) with speed characteristics at full load was reduced by 20 g/kW h on average; the smoke was reduced significantly, and the coeffcient of light absorption of smoke decreased by 50 per cent; the NOx and HC emissions were also clearly reduced, and the CO emission was at the same level as that of a diesel engine.

Simulation and Experiment of Temperature Field in Catalytic Combustion Furnace of Natural Gas

2013 ◽  
Vol 401-403 ◽  
pp. 877-881
Author(s):  
Long Fei Yan ◽  
Shi Hong Zhang
Keyword(s):  
Temperature Field ◽  
Natural Gas ◽  
Experimental Test ◽  
Catalytic Combustion ◽  
Test Results ◽  
Internal Temperature ◽  
Ansys Software ◽  
Data Simulation ◽  
Simulation And Experiment ◽  
Simulation Results

The physical model of natural gas catalytic combustion furnaces was established, furnace was simulated using ANSYS software, and verifying the validity of the simulation through the experimental test data. Simulation results and test results were analyzed, concluding that law of internal temperature field in furnace, to provide a reference for the next application of furnace

Nonlinear Identification of a Turbocharged Diesel Engine Compression System Dynamics by an Uncertain Volterra Representation

2006 ◽  
Author(s):  
Nikolaos I. Xiros ◽  
Gerassimos P. Theotokatos
Keyword(s):  
Mathematical Modeling ◽  
Diesel Engine ◽  
Dynamic Response ◽  
System Dynamics ◽  
Physical Processes ◽  
Nonlinear Identification ◽  
Turbocharged Diesel Engine ◽  
Compression System ◽  
Simulation Results

In the present paper, the dynamics of the compression system of the turbocharged Diesel engine is identified using an uncertain Volterra representation. The required results depicting the dynamic response of the compression system under various compressor running conditions and sinusoidal compression system valve excitations are produced by simulation using detailed mathematical modeling of the physical processes involved in the compression system. The simulation results are appropriately processed and the Volterra representation of the system dynamics is formulated.

Simulation Investigation about Combustion and Emission Characteristics of n-Butanol/Diesel Fuel Mixture on Diesel Engine

2014 ◽  
Vol 541-542 ◽  
pp. 763-768 ◽  
Author(s):  
Jian Wu ◽  
Hong Ming Wang ◽  
Li Li Zhu ◽  
Yang Hua
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Combustion Process ◽  
Fuel Mixture ◽  
Calculation Model ◽  
Emission Characteristics ◽  
Test Results ◽  
Combustion Pressure ◽  
Indicator Diagram ◽  
Simulation Results

In this paper, combustion process was simulated on diesel engine with n-butanol/diesel blends in 3000 r/min, 300 Nm using AVL FIRE ESE Diesel. By comparison with indicator diagram, simulation results were consistent with the test results using pure diesel and 5%(volume of n-butanol) n-butanol/diesel blends. Using the calculation model combustion in cylinder is calculated burning B10(mass friction of n-butanol is 10%), B20 and B30 n-butanol /diesel mixture. The results show that the maximum combustion pressure and temperature gradually increases, and accumulated heat of release slightly reduces with the adding of n-butanol. BSFC increases, but indicated efficiency reduces. Mass friction of soot significantly reduce, and mass friction of NOx firstly decreases then increases with the adding of n-butanol. This will provide a basis to the research of n-butanol as substitute fuel.

scholarly journals Exhaust Prototype Design of L12B Engine

2021 ◽  
Vol 9 (6) ◽  
pp. 723-727
Keyword(s):  
Fluid Flow ◽  
Flow Velocity ◽  
Experimental Test ◽  
Cfd Simulation ◽  
Combustion Engine ◽  
Test Results ◽  
Simulation Test ◽  
Scavenging Effect ◽  
Fluid Flow Velocity ◽  
Prototype Design

The CFD simulation test carried out on the prototype exhaust, produce an average fluid flow velocity value of 8.36 m/s, and the experimental test results using a flowbench engine on the prototype exhaust, produce an average fluid flow velocity value of 8.49 m/s, so the errorcomparison from themeasurement results on the prototype exhaust between the CFD simulation and experimental results is 1.53%. Fluid flow velocity is a measurement reference in this study because it directly affectsthe scavenging effect on the internal combustion engine, which of course will directly affect the level of power generated by the engine.

A Comparison between Experimental and Analytical Transient Test Results for a Turbocharged Diesel Engine

1976 ◽  
Vol 190 (1) ◽  
pp. 267-276 ◽  
Author(s):  
D.E. Winterbone ◽  
R.S. Benson ◽  
G.D. Closs ◽  
A.G. Mortimer
Keyword(s):  
Steady State ◽  
Diesel Engine ◽  
Operating Conditions ◽  
Analogue Computer ◽  
Test Results ◽  
Test Bed ◽  
Turbocharged Diesel Engine ◽  
Computer Based ◽  
Computer Controlled ◽  
Good Agreement

SYNOPSIS A computer controlled diesel engine test-bed is described. The system is capable of excursions into regions of very low air-fuel ratio operation without damage to the engine; this enables the engine “steady-state” characteristics to be measured for off-design operating conditions. A computer-based data acquisition system was developed to acquire test-bed results under engine transient operating conditions. An analogue computer model of the engine was constructed using the steady-state characteristics of the engine as obtained from on- and off-design. This model operated in real-time and was suitable for both studies of engine control systems and the testing of control hardware. Results obtained from the test-bed and the model are compared. It is shown that good agreement can be achieved by minor modifications to the model based on steady state results.

Catalysts for Gas Turbine Combustors—Experimental Test Results

1977 ◽  
Vol 99 (2) ◽  
pp. 159-167 ◽  
Author(s):  
S. M. DeCorso ◽  
S. Mumford ◽  
R. V. Carrubba ◽  
R. Heck
Keyword(s):  
Gas Turbine ◽  
Mass Flow ◽  
Experimental Test ◽  
Test Results ◽  
Flow Conditions ◽  
Emission Performance ◽  
Coal Gas ◽  
Gas Turbine Combustors ◽  
Low Emission ◽  
Thermal Combustion

This paper describes experimental test runs utilizing catalytically supported thermal combustion for gas turbine application. Test fuels were No. 2 distillate oil and low Btu synthetic coal gas. The tests were carried out over a range of pressure, temperature, and mass flow conditions. Analysis of these results are presented and the implications for future combustor design are discussed. Catalytically supported thermal combustion demonstrated the potential for very low emission performance.

Effects of Load Ratio on Dual-Fuel Engine Operated with Pilot Diesel Fuel and Liquefied Natural Gas

2014 ◽  
Vol 960-961 ◽  
pp. 1389-1393
Author(s):  
Qiang Shi ◽  
Chun Hua Zhang ◽  
Yan Chao Cai ◽  
Ju Xiang Fang
Keyword(s):  
Diesel Engine ◽  
Natural Gas ◽  
Diesel Fuel ◽  
Engine Speed ◽  
Load Ratio ◽  
Liquefied Natural Gas ◽  
Dual Fuel ◽  
Turbocharged Diesel Engine ◽  
Full Load ◽  
Co Emission

In order to study the application of the liquefied natural gas (LNG) on diesel engine, a turbocharged diesel engine was converted into a dual-fuel engine ignited by diesel fuel. The effects of load ratio on fuel economy and emissions of dual-fuel engine were compared and analyzed at engine speed of 1200 r/min, 1600 r/min and 2200 r/min. The experimental results show that, the specific fuel consumption is reduced with the increase of load ratio at different speeds. As the load ratio increases, CO emission of dual-fuel reduces, but it increases slightly at high loads and full load. When the load ratio is less than 40%, HC emission of dual-fuel is reduced significantly with the increase of load, but increases when the load ratio continues to increase, and finally HC emission is stable. When the load ratio is less than 40 %, NOx emission is relatively low, as the load ratio increases, increases sharply, but at high loads and full load, reduces slightly.

Pressure Wave Supercharging of Passenger Car Diesel Engines

1983 ◽  
Vol 197 (2) ◽  
pp. 113-123
Author(s):  
E Jenny ◽  
B Zamstein
Keyword(s):  
Fuel Consumption ◽  
Experimental Test ◽  
Diesel Engines ◽  
Pressure Wave ◽  
Exhaust Emissions ◽  
Test Results ◽  
Passenger Car ◽  
Excellent Response ◽  
Different Types ◽  
Engine Size

This study is based on experimental test results, typical for small passenger car diesel engines. The influence of engine size on the performance of the car was investigated using four different types of engine. The four types of engine were (a) naturally aspirated engine, (b) engine with turbocharger and waste gate, (c) engine with pressure wave supercharger (PWS) and (d) engine with PWS and intercooler. The performance of the car fitted with the pressure wave supercharger ComprexR* was examined and found to have excellent response, reduced fuel consumption and reduced exhaust emissions.

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