3 edition of Three-dimensional modeling of diesel engine intake flow, combustion, and emissions - II found in the catalog.
Three-dimensional modeling of diesel engine intake flow, combustion, and emissions - II
by National Aeronautics and Space Administration, Lewis Research Center in [Cleveland, Ohio]
|Other titles||Three dimensional modeling of diesel engine intake flow, combustion, and emissions - II.|
|Statement||principal investigators, R.D. Reitz and C.J. Rutland.|
|Series||NASA contractor report -- NASA CR-191189.|
|Contributions||Rutland, C. J., Lewis Research Center.|
|The Physical Object|
Diesel engine is presently facing the challenge of controlling NOx and soot emissions on transient cycles, to meet stricter emission norms and to control emissions during field operations. Fusco A, Knox-Kelecy AL, Foster DE () Application of a phenomenological soot model to Diesel Engine Combustion. 3rd International Symposium, COMODIA Google Scholar Gosman AD, Tsui YY, Watkins AP () Calculation of Unsteady Three-dimensional Flow in a Model Motored reciprocating Engine and Comparison with by: 1.
Abstract. A new concept of reduced quasi-dimensional combustion model for a direct injection diesel engine is developed based on the previously developed quasi-dimensional multi-zone model to improve the computational by: 5. The paper presents a method for calculating the three-dimensional flow-fields in reciprocating internal combustion engines, as a function of space and Cited by:
In this paper, the three-dimensional models of three kinds of new intake manifold for engine were established. The model was divided with tetrahedral mesh using software GAMBIT. Three-dimensional flow simulation was conducted using software FLUENT and the velocity contours of intake Cited by: 2. combustion engines have an important effect on engine performances, emissions of pollutants and noise. To control the engine output torque by the intake airflow restriction, a throttle valve must be installed between the air cleaner and the intake manifold. Due to the complex nature of this unit geometry and the resulting flow field, a 3D flow File Size: KB.
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KIVA to model the intake flow process is described. A grid generation scheme has been developed for modeling realistic (complex) engine geometries, and computations have been made of intake flow in the ports and combustion chamber of a two-intake-valve engine.
The research also involves the use of the code to assess the effects of subprocesses on dieselFile Size: 3MB. 3-D Modeling of Diesel Engine Intake Flow, Combustion and Emissions. Manufacturers of heavy-duty diesel engines are facing increasingly stringent, emission standards.
These standards have motivated new research efforts towards improving the performance of diesel combustion. The objective of the present program is to develop a comprehensive analytical model of the diesel combustion process Cited by: 7. The approach taken is to use a three-dimensional code that includes the most advanced available submodels for the important processes that influence diesel combustion.
The model accounts for the complex interactions that occur in the turbulent, multiphase, combusting three-dimensional flow in the engine. Technical Report: Three-dimensional modeling of diesel engine intake flow, combustion and emissions-II.
A three-dimensional computer code (KIVA) is being modified to include state-of-the-art submodels for diesel engine flow and combustion: spray atomization, drop breakup/coalescence, multi-component fuel vaporization, spray/well interaction, ignition and combustion, wall heat transfer, unburned HC and NOx formation, soot and radiation and the intake flow process.
Get this from a library. Three-dimensional modeling of diesel engine intake flow, combustion, and emissions. [R D Reitz; Rutland, C.J.; United States.
National Aeronautics and Space Administration.]. Three Dimensional Modeling of Mixture Formation and Combustion in a Direct Injection Heavy-Duty Diesel Engine which are necessary for performing the three dimensional CFD analysis.
The intake. CFD simulation of IDI engines have been discussed earlier by Pinchon . Three dimensional modeling of combustion process and soot formation in an indirect injection diesel engine using KIVA CFD code has been performed by Zellat et al.
. Strauss and Schweimer  studied. • We carried out exergy analyses in pre and main chambers of an IDI diesel engine by three dimensional model. • At 50% and full load cases 56% and 77% of total irreversibility are related to combustion in main chamber, respectively.
• When load increases from part to full load, the amount of exergy flow in throat increases to 56%.Cited by: Using modified versions of the KIVA-II and KIVA-3 CFD codes, intake, compression, and combustion of a Caterpillar diesel engine was modeled. Seven variations on intake and two injection schemes were explored so that a detailed understanding of the effects of intake on various flow properties and their subsequent influence on combustion and emissions could be by: Three-Dimensional Modeling of Combustion Process, Soot and NOx formation In a Direct-injection Diesel Engine The Journal of Engine Research / Vol.
14 / Spring premiere examples. Choi Wook, et al  has used STARCD code and PIV analysis to study In-cylinder flow field of a single cylinder DI diesel engine.
It was indicated that high. Modeling the Effects of Intake Flow Characteristics on Diesel Engine Combustion The three-dimensional CFD codes KIVA-II and KIVA-3 have been used together to study the effects of intake generated in-cylinder flow structure on fuel-air mixing and combustion in a direct injected (DI) Diesel by: Keywords—Diesel engine, Combustion, Pollution, CFD.
INTRODUCTION UE to the growing importance of future emission restrictions, manufacturers of internal combustion engines are forced continuously to improve the mixture formation and combustion processes in order to reduce engine raw emissions.
Get this from a library. Three-dimensional modeling of diesel engine intake flow, combustion, and emissions - II: report period 10// [Rolf Deneys Reitz; Rutland, C.J.; Lewis Research Center.]. An existing multidimensional in-cylinder flow code, KIVA, was modified to calculate gas flow and fuel injection in a simplified (no valve stem and simplified valve-head geometry) engine intake port.
A single-cylinder engine simulation program was used to specify the initial and boundary conditions for flow Cited by: 7. In the present study, a diesel engine was modified to a diesel pilot ignited natural gas engine and the influences of intake valve closing timing on in-cylinder flow, combustion and emission.
This paper describes a simplified three-dimensional modeling of the mixture formation and combustion processes in a direct injection (D.I.) diesel engine.
The fuel-air mixing and combustion processes in the D.I. diesel engine can be characterized by the combined effects of Cited by: In this paper, a three-dimensional moving grid model of the combustion engine chamber, originally developed by the authors to include simulation of the actual needle lift, has been enhanced by increasing the accuracy in the proximity of the sonic section of the critical valve-seat nozzle, in order to precisely capture the expansion dynamics the Cited by: Computational Fluid Dynamics Modeling of Diesel Engine Combustion and Emissions Author: R.D.
Reitz Subject: Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters Keywords: diesel emissions reduction, diesel emissions, particulate matter, diesel engines, nitrogen oxides Created Date: 9/15/ PM.
This chapter is an introduction to the background theory of diesel engine and diesel combustion process. Diesel engine In mechanical terms, the internal construction of a diesel engine is similar to its gasoline counterpart-components e.g.
pistons, connecting rods and a crankshaft are present in both. The different parts in the engine are. Keywords: Engine, intake manifold, vanes, intake port model I.
Introduction To Intake Manifold The engine cycle of typical internal combustion engines consist of four consecutive processes as intake, compression, expansion (including combustion) and exhaust. Of these four processes, the intake andFile Size: 1MB.On the other hand, Payri et al.
() performed three-dimensional flow calculations of a four-valve direct-injection Diesel engine at the intake and compression strokes with different combustion. Patterson M A and Reitz R D () Modeling the effects of fuel spray characteristics on diesel engine combustion and emissions.
SAE paper Google Scholar Pelloni P and Bianchi G M () Modeling the diesel fuel spray break-up by using a hybrid by: 3.