scholarly journals Studi Eksperimental Pengaruh Variasi Diameter Tabung Ear Resonator terhadap Tekanan Aliran Udara Supercharging pada Inlet Manifold

2021 ◽  
Vol 16 (1) ◽  
pp. 116
Author(s):  
Fany Laamena ◽  
Abdul Hadi ◽  
Frits Noya ◽  
Mario Letsoin
Keyword(s):  
Inlet Manifold

<p><strong>Abstrak</strong></p><p><strong> </strong></p><p>Supercharger dan resonator merupakan salah satu komponen penting menyangkut tekanan udara pada langkah pembakaran dalam motor diesel 4 tak. Penelitian ini bertujuan untuk mengetahui pengaruh diameter tabung Ear Resonator terhadap tekanan aliran udara Supercharging pada Inlet Manifold. Metode eksperimental digunakan dalam penelitian dengan memvariasikan diameter tabung sebanyak 5 buah Ear Resonator yaitu ½”, ¾”, 1”, 11/4”, dan 1½” yang dipasang secara horizontal. Hasil olahan selisih rata-rata tekanan input dan output menyatakan bahwa variasi diameter tabung Ear Resonator berpengaruh terhadap tekanan yaitu: Variasi ke-2 merupakan tekanan output tertinggi dengan nilai sebesar 101359.90 N/m2 atau dengan beda tekanan output dan input dengan nilai sebesar -64.92 N/m2 atau sebesar -0.06 %. Variasi ke-5 merupakan salah satu tekanan output terendah dengan nilai sebesar 101325.04 N/m2 atau dengan beda tekanan output dan input tertinggi dengan nilai sebesar 23.31 N/m2 atau sebesar 0.02 %.</p>

Flow in the Inlet Manifold of a Production Diesel Engine

1989 ◽  
Vol 203 (1) ◽  
pp. 39-49 ◽  
Author(s):  
C Arcoumanis ◽  
J H Whitelaw ◽  
P Flamang
Keyword(s):  
Diesel Engine ◽  
Laser Doppler Anemometry ◽  
Direct Injection ◽  
Radial Velocities ◽  
Laser Doppler ◽  
Direct Injection Diesel Engine ◽  
Inlet Manifold ◽  
Spatial Locations ◽  
Engine Cycle

The flow in the inlet manifold of a Ford direct injection diesel engine has been characterized by laser Doppler anemometry under motored conditions at engine speeds between 300 and 1100 r/min. Plexiglass windows have been inserted at three locations in adjacent manifold branches of the four-cylinder engine and back-scatter LDA was used to provide information about the ensemble-averaged and in-cycle axial and radial velocities at various spatial locations within the inlet channels during the engine cycle.

A New Inlet Distortion and Pressure Loss Based Design of an Intake System for Stationary Gas Turbines

2013 ◽  
Author(s):  
Jose Rodriguez ◽  
Stephan Klumpp ◽  
Thomas Biesinger ◽  
James O’Brien ◽  
Tobias Danninger
Keyword(s):  
Gas Turbines ◽  
Inlet System ◽  
Inlet Distortion ◽  
Surge Margin ◽  
Compressor Surge ◽  
Compressor Inlet ◽  
The Face ◽  
Flow Quality ◽  
Inlet Manifold ◽  
Distortion Parameters

This paper presents a new design for a Compressor Inlet Manifold (CIM) for a land-based power generation Gas Turbine (turbine). The CIM is the component of the Inlet System (IS) that is directly connected to the turbine via the Compressor Inlet Case (CIC). The design philosophy is to use low fidelity but fast and automated CFD (Computational Fluid Dynamics) for design iterations and then confirm the design with detailed higher accuracy CFD before proceeding to engine tests. New design features include contouring the wall to minimize areas of flow separation and associated unsteadiness and losses, and improvement of the flow quality into the compressor. The CIM in a land-based turbine acts as a nozzle whereas the inlet of an aircraft acts as a diffuser. The flow also enters the CIM at 90 deg to the engine axis. This leads to a pair of counter rotating vortices at the compressor inlet. Three main sources of flow distortions at the face of the compressor are identified: flow separations at outer walls of the IS and CIM struts and the counter rotating vortices. The higher accuracy CFD analysis including the complete IS, CIM and the first compressor stage, simulates the effect of these distortions on the compressor front stage at design conditions. A range of inlet distortion parameters are used to evaluate the inlet design. The well known DC60 based criterion derived from aircraft engines and other less known but published parameters are able to give an indication of how the compressor surge margin of stationary gas turbines is affected.

scholarly journals IMPROVEMENT OF ENGINE INDICATORS BY SUPPLYING LIQUID FUEL INTO THE INLET MANIFOLD

2017 ◽  
Vol 0 (41) ◽  
pp. 67
Author(s):  
F. Abramchuk ◽  
A. Kuzmenko ◽  
M. Boychuk
Keyword(s):  
Liquid Fuel ◽  
Inlet Manifold

Control Development for Smoke Reduction Through Inlet Manifold Air Injection During Transient Loading of Marine Diesel Engines

2009 ◽  
Author(s):  
G. Papalambrou ◽  
N. P. Kyrtatos
Keyword(s):  
Model Predictive Control ◽  
Predictive Control ◽  
Air Injection ◽  
Intake Manifold ◽  
Test Bed ◽  
Engine Operation ◽  
Marine Diesel ◽  
Test Engine ◽  
Inlet Manifold ◽  
Intake Manifold Pressure

This paper addresses the reduction of smoke emissions and improvement of load acceptance in a turbocharged marine diesel engine, during transient operation involving rapid load increases. Model Predictive Control (MPC) provided the optimal quantity of injected air in the engine while minimizing smoke density (opacity), with constraint not to exceed a limit in intake manifold pressure, in order to avoid surge in the compressor. System identification methods were used to determine control models at various operating points of the engine. Transient response experiments were performed on a full-scale marine diesel test engine on a transient test bed, using real-time MPC configuration. Results comparing the opacity under air injection model predictive control with the standard engine operation without air injection, during the same transient, show reduction in opacity level while avoiding surge.

scholarly journals Compression Ratio Effect on Methane HCCI Combustion

1999 ◽  
Vol 121 (3) ◽  
pp. 569-574 ◽  
Author(s):  
S. M. Aceves ◽  
J. R. Smith ◽  
C. K. Westbrook ◽  
W. J. Pitz
Keyword(s):  
Compression Ratio ◽  
Equivalence Ratio ◽  
Recent Experimental Data ◽  
Ignition Process ◽  
Operational Conditions ◽  
Hcci Combustion ◽  
Intake Pressure ◽  
Inlet Manifold ◽  
Compression Ignition Combustion ◽  
Gas Recirculation

We have used the HCT (hydrodynamics, chemistry, and transport) chemical kinetics code to simulate HCCI (homogeneous charge compression ignition) combustion of methane-air mixtures. HCT is applied to explore the ignition timing, burn duration, NOx, production, gross indicated efficiency and gross IMEP of a supercharged engine (3 atm. intake pressure) with 14:1, 16:1 and 18:1 compression ratios at 1200 rpm. HCT has been modified to incorporate the effect of heat transfer and to calculate the temperature that results from mixing the recycled exhaust with the fresh mixture. This study uses a single reaction zone that varies as a function of crank angle. The ignition process is controlled by adjusting the intake equivalence ratio and the residual gas trapping (RGT). RGT is internal exhaust gas recirculation, which recycles both thermal energy and combustion product species. Adjustment of equivalence ratio and RGT is accomplished by varying the timing of the exhaust valve closure in either two-stroke or four-stroke engines. Inlet manifold temperature is held constant at 300 K. Results show that, for each compression ratio, there is a range of operational conditions that show promise of achieving the control necessary to vary power output while keeping indicated efficiency above 50 percent and NOx levels below 100 ppm. HCT results are also compared with a set of recent experimental data for natural gas.

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