One-dimensional Simulation Study on the Rule of Several-parameter Matching for the Performance of a Turbocharged Diesel Engine

2008 ◽  
Author(s):  
Liu Fu-shui ◽  
Du Wei ◽  
Sun Bai-gang
Keyword(s):  
Diesel Engine ◽  
Simulation Study ◽  
Turbocharged Diesel Engine ◽  
One Dimensional ◽  
Parameter Matching ◽  
Dimensional Simulation

Study on Performance Optimization of Car Diesel Engine with VNT Based on One-Dimensional Simulation and Experimental Verification

2012 ◽  
Vol 155-156 ◽  
pp. 12-17 ◽  
Author(s):  
Lian Xu Wang ◽  
Da Wei Qu ◽  
Chang Qing Song ◽  
Ye Tian
Keyword(s):  
Experimental Data ◽  
Diesel Engine ◽  
Performance Optimization ◽  
High Speed ◽  
Turbine Blades ◽  
Simulation Software ◽  
Engine Operation ◽  
One Dimensional ◽  
Distribution Phase ◽  
Dimensional Simulation

To research the performance optimization of high speed car diesel engine，firstly according to the characteristic of car diesel engine with Variable Nozzle Turbocharger (VNT)， one-dimensional cycle model of the engine was established by using simulation software BOOST and validated by experimental data in this paper. The turbine blades’ opening corresponding to different speed was determined. Therefore the problem that the VNT surges at low engine speed and the inlet air flow is insufficient at high speed was solved. Based on the above model, this paper improved the efficiency of the engine by optimizing the compression ratio and the distribution phase of camshaft and then used the experimental data to check the simulation results. Meanwhile the fuel consumption and the possibility of the engine operation roughness decreased.

scholarly journals Research on Power Enhancement of TCD2015V08 Diesel Engine Based on One-Dimensional Simulation and Analysis

2018 ◽  
Vol 208 ◽  
pp. 012009
Author(s):  
Zhenghu Chen ◽  
Lian Xie ◽  
Haikun Shang ◽  
Jianfeng He ◽  
Jie Zheng ◽  
...  
Keyword(s):  
Diesel Engine ◽  
One Dimensional ◽  
Power Enhancement ◽  
Dimensional Simulation

scholarly journals A model-based and experimental approach for the determination of suitable variable valve timings for cold start in partial load operation of a passenger car single-cylinder diesel engine

2018 ◽  
Vol 20 (1) ◽  
pp. 141-154 ◽  
Author(s):  
P Maniatis ◽  
U Wagner ◽  
T Koch
Keyword(s):  
Diesel Engine ◽  
Experimental Investigations ◽  
Exhaust Gas ◽  
Gas Temperature ◽  
Warm Up ◽  
One Dimensional ◽  
Engine Efficiency ◽  
Residual Gas ◽  
Dimensional Simulation ◽  
Exhaust Gas Temperature

A manipulation of the charge exchange allows controlling the amount of residual gas during engine warm-up. The residual gas during the warm-up phase leads to an increase of the exhaust gas temperature and supports to reach the exhaust after-treatment system operating temperature faster. In addition, the warm residual gas increases the combustion chamber temperature, which reduces the HC and CO emissions. However, fuel consumption increases. For that reason, such heating measures should be the best compromise of both, exhaust gas temperature increase and engine efficiency, in order to provide efficient heating strategies for passenger car diesel engines. Therefore, simulative and experimental investigations are carried out at the Institute of Internal Combustion Engines of the Karlsruhe Institute of Technology to establish a reliable cam design methodology. For the experimental investigations, a modern research single-cylinder diesel engine was set up on a test bench. In addition, a one-dimensional simulation model of the experimental setup was created in order to simulate characteristics of valve lift curves and to investigate their effects on the exhaust gas temperature and the exhaust gas enthalpy flow. These simulations were based on design of experiments (DoE), so that all characteristics can be used sustainably for modeling and explaining their influences on the engine operation. This methodology allows numerically investigating promising configurations and deriving cam contours which are manufactured for testing. To assess the potential of these individual configurations, the results obtained were compared with each other as well as with the series configuration. Results show that the combination of DoE and one-dimensional simulation for the design of camshaft contours is well suited which was also validated with experimental results. Furthermore, the potential of residual gas retention by favorable configurations with a second event already revealed in various publications could be confirmed with respect to exhaust gas temperature increase and engine efficiency.

One-Dimensional Simulation of the Combustion Process in an Engine Cylinder with Ethanol

2014 ◽  
Vol 660 ◽  
pp. 447-451
Author(s):  
Akasyah M. Kathri ◽  
Rizalman Mamat ◽  
Amir Aziz ◽  
Azri Alias ◽  
Nik Rosli Abdullah
Keyword(s):  
Diesel Engine ◽  
Alternative Fuels ◽  
Engine Speed ◽  
Combustion Process ◽  
Cylinder Pressure ◽  
Ethanol Fuel ◽  
One Dimensional ◽  
Engine Cylinder ◽  
Dimensional Simulation ◽  
The One

The diesel engine is one of the most important engines for road vehicles. The engine nowadays operates with different kinds of alternative fuels, such as natural gas and biofuel. The aim of this article is to study the combustion process that occurs in an engine cylinder of a diesel engine when using biofuel. The one-dimensional numerical analysis using GT-Power software is used to simulate the commercial four-cylinder diesel engine. The engine operated at high engine load and speed. The ethanol fuel used in the simulation is derived from the conventional ethanol fuel properties. The analysis of simulations includes the cylinder pressure, combustion temperature and rate of heat release. The simulation results show that in-cylinder pressure and temperature for ethanol is higher than for diesel at any engine speed. However, the mass fraction of ethanol burned is similar to that of diesel. MFB only affects the engine speed.

Simulation of an Intake Manifold Pre-Heater for Cold Engine Startup

2012 ◽  
Author(s):  
Patrick K. Kreun ◽  
Claudia M. Fajardo ◽  
Andreas S. Baumann
Keyword(s):  
Diesel Engine ◽  
Equivalence Ratio ◽  
Intake Manifold ◽  
Simulation Tool ◽  
Extreme Temperatures ◽  
Cold Temperatures ◽  
One Dimensional ◽  
O2 Concentration ◽  
Dimensional Simulation ◽  
Product Species

Ensuring consistent, reliable diesel engine startups in cold temperatures is of utmost importance in a number of applications. Under extreme temperatures, the use of glow plugs is complemented by intake manifold heaters. In these, the energy released from combustion increases the intake air temperature before the air enters the main combustion chamber. Since the process also alters the stoichiometry of the fuel-air mixture at the intake ports, the pre-heater operation must be optimized in order to guarantee successful and reliable in-cylinder combustion during engine startups. This paper describes the development of an intake manifold model incorporating an air pre-heater for application in a diesel engine. The model, created using a commercial one-dimensional simulation tool, was validated against experimental data and subsequently used to quantify the concentration of combustion product species at the intake runners, as well as intake charge dilution. Results showed that the effective equivalence ratio might increase up to 2.6 after the first 25 seconds of cranking, with 12.5% reduction of the O2 concentration in the intake charge.

Simulation of an Intake Manifold Preheater for Cold Engine Startup

2013 ◽  
Vol 135 (7) ◽  
Author(s):  
Patrick K. Kreun ◽  
Claudia M. Fajardo ◽  
Andreas Baumann
Keyword(s):  
Diesel Engine ◽  
Intake Manifold ◽  
Transfer Model ◽  
Extreme Temperatures ◽  
Cold Temperatures ◽  
Air Preheater ◽  
One Dimensional ◽  
O2 Concentration ◽  
Dimensional Simulation ◽  
Product Species

Ensuring consistent, reliable diesel engine startups in cold temperatures is of utmost importance in a number of applications. Under extreme temperatures, the use of glow plugs is complemented by intake manifold heaters. In these, the energy released from combustion increases the intake air temperature before the air enters the main combustion chamber. Since the process also alters the stoichiometry of the fuel-air mixture at the intake ports, the preheater operation must be optimized in order to guarantee successful and reliable in-cylinder combustion during engine startups. This paper describes the development of an intake manifold model incorporating an air preheater for application in a diesel engine. The model was created using a commercial, one-dimensional simulation tool and its default heat transfer model was modified in-house for the present application. The model was validated against experimental data and subsequently used to quantify the concentration of combustion product species at the intake runners, as well as intake charge dilution. The experimental and predicted intake runner gas temperatures agreed within 15%. Results showed that the effective equivalence ratio might increase up to 2.6 after the first 15 s of cranking, with 12.5% reduction of the O2 concentration in the intake charge.

scholarly journals A Simulation Study of the Impact of LP EGR on a Two-Stage Turbocharged Diesel Engine

2009 ◽  
Vol 64 (3) ◽  
pp. 361-379 ◽  
Author(s):  
P. Gautier ◽  
A. Albrecht ◽  
A. Chasse ◽  
P. Moulin ◽  
A. Pagot ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Simulation Study ◽  
Two Stage ◽  
Turbocharged Diesel Engine ◽  
The Impact
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