scholarly journals Assessment of an electrical coolant pump on a heavy-duty diesel engine

2021 ◽  
Vol 3 (3) ◽  
Author(s):  
Markus Kiesenhofer
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Carbon Dioxide Emissions ◽  
Test Bench ◽  
Engine Test ◽  
The European Union ◽  
Engine Test Bench ◽  
Commercial Vehicles ◽  
Coolant Pump ◽  
Vehicle Class

AbstractHybridization of the drive train in commercial vehicles is a key solution toward meeting the strict future requirements to reduce carbon dioxide emissions within the European Union. In order to decrease fleet consumption a large number of different hybrid systems are already available in series in the passenger car sector. Due to the cheap and powerful 48 volt hybrid components and the lower hazard potential compared to high voltage, future commercial vehicles could also benefit from the 48V technology and contribute to lower fleet fuel consumption. Therefore, a complete 48V mild hybrid system was built on the diesel engine test bench as part of a research project. This paper highlights the utilization of a powerful 48V-motor to propel the coolant pump on a diesel engine of the 13-L commercial vehicle class. Three different drive variants of the coolant pump were implemented and measured on the diesel engine test bench. MATLAB®/Simulink®-simulations were conducted to assess the possible fuel savings in three different driving cycles. This paper provides a summary and interpretation of the measurement and simulation results. The simulation studies predict a decrease of fuel consumption of up to 0.94%. Furthermore, the additional advantages of electrified coolant pumps based on 48V are discussed.

scholarly journals Investigation of diesel engine for low exhaust emissions with different combustion chambers

2015 ◽  
Vol 19 (6) ◽  
pp. 2013-2024 ◽  
Author(s):  
Pundlik Ghodke ◽  
Jiwak Suryawanshi
Keyword(s):  
Diesel Engine ◽  
Combustion Chamber ◽  
Compression Ratio ◽  
Test Bench ◽  
Low Cost ◽  
Engine Test ◽  
Engine Test Bench ◽  
Combustion Chambers ◽  
Full Load ◽  
Base Engine

Upcoming stringent Euro-6 emission regulations for passenger vehicle better fuel economy, low cost are the key challenges for engine development. In this paper, 2.2L, multi cylinder diesel engine have been tested for four different piston bowls designed for compression ratio of CR 15.5 to improve in cylinder performance and reduce emissions. These combustion chambers were verified in CFD at two full load points. 14 mode points have been derived using vehicle model run in AVL CRUISE software as per NEDC cycle based on time weightage factor. Base engine with compression ratio CR16.5 for full load performance and 14-mode points on Engine test bench was taken as reference for comparison. The bowl with flat face on bottom corner has shown reduction 25% and 12 % NOx emissions at 1500 and 3750 rpm full load points at same level of Soot emissions. Three piston bowls were tested for full load performance and 14 mode points on engine test bench and combustion chamber ?C? has shown improvement in thermal efficiency by 0.8%. Combinations of cooled EGR and combustion chamber ?C? with geometrical changes in engine have reduced exhaust NOx, soot and CO emissions by 22%, 9 % and 64 % as compared to base engine at 14 mode points on engine test bench.

scholarly journals Implementation of a 3.5 kW resistive load bank for a single-cylinder diesel engine test bench

2020 ◽  
Vol 25 (4) ◽  
pp. 598-505
Author(s):  
Jorge Eliécer Duarte Forero ◽  
Miguel Celis Quintero ◽  
Gabriel Hernandez Acosta
Keyword(s):  
Diesel Engine ◽  
Internal Combustion Engines ◽  
Test Bench ◽  
Thermal Design ◽  
Power Measurement ◽  
Resistive Load ◽  
Engine Test ◽  
Engine Test Bench ◽  
Element Analysis ◽  
Single Cylinder

This article presents the implementation of a 3.5 kW resistive load bank applied to a four-stroke single-cylinder diesel engine test bench that operates with an alternator.   With this experimental test bench, it is possible to perform mechanical, thermodynamic, and polluting emissions studies in compression-ignited or induced internal combustion engines.   Applying the quantitative research methodology, the design of the electric charging system is carried out. Power control circuits and safety elements are designed for the load back. CAD software is used to design the structure and casing considering anthropometric measurements. Also, finite element analysis (FEA) is incorporated to verify the structural and thermal design criteria.   he implementation of an electrical and instrumentation acceleration system for sensing power and torque in low-displacement engines showed a measurement error of less than 1%. Similarly, the FEA allowed to quantify the maximum efforts and guarantee a safety factor above 5.   With the characterization of the implemented sensors, a correlation coefficient of up to 99.97% was achieved. The power measurement displayed an error lower than 3%, which leads to a high characterization capacity of any thermal machine with equal power or less than the designed one.

REAL-TIME NONLINEAR INDIVIDUAL CYLINDER AIR FUEL RATIO OBSERVER ON A DIESEL ENGINE TEST BENCH

2005 ◽  
Vol 38 (1) ◽  
pp. 194-199 ◽  
Author(s):  
Jonathan Chauvin ◽  
Philippe Moulin ◽  
Gilles Corde ◽  
Nicolas Petit ◽  
Pierre Rouchon
Keyword(s):  
Diesel Engine ◽  
Real Time ◽  
Test Bench ◽  
Engine Test ◽  
Engine Test Bench ◽  
Fuel Ratio

Experimental Research on Diesel Engine Friction and Wear Based on Ferrographic Analysis

2015 ◽  
Vol 778 ◽  
pp. 195-198 ◽  
Author(s):  
Hai Bing Xiao
Keyword(s):  
Diesel Engine ◽  
Wear Mechanism ◽  
Friction And Wear ◽  
Test Bench ◽  
Particle Morphology ◽  
Wear Particle ◽  
Engine Test Bench ◽  
Experimental Scheme ◽  
Wear Monitoring ◽  
Engine Friction

This paper deals with the study of diesel engine friction and wear. The friction and wear mechanism of diesel engine was studied and the wear factors of diesel engine friction and wear was analyzed. According to the diesel engine test bench, diesel engine experimental scheme of oil testing was designed during running-in stage. Studies have shown that wear particle morphology of diesel engine from ferrographic analysis can reflect the degree of wear and wear mechanism during running-in stage, wear particle changed during running-in stage. Ferrographic monitoring is an effective method for diesel engine friction and wear monitoring.

THE EFFECTIVENNESS OF SOME PRACTICAL METHODS OF LOWERING THE BACKGROUND ACOUSTIC NOISE, PRODUCED BY THE ENGINE TEST BENCH TECHNOLOGICAL EQUIPMENT

Akustika ◽  
2021 ◽  
pp. 168
Author(s):  
Igor Deryabin ◽  
Aleksandr Krasnov ◽  
Larisa Gorina
Keyword(s):  
Background Noise ◽  
Test Bench ◽  
Acoustic Noise ◽  
Technological Equipment ◽  
Engine Test ◽  
Engine Test Bench ◽  
High Background ◽  
Sound Fields ◽  
Load Carrying ◽  
Anechoic Chambers

When conducting acoustic researches and finishing works on combustion engines specialized technological equipment and tools mounted mainly in anechoic chambers are used. In order to ensure the high quality and objectivity of the research results of the sound fields produced by the research object it is crucial to achieve a sufficiently low parasitic background noise produced by technological equipment and tools of an engine test bench. The source of a high background noise re-emited to the anechoic chambers interior is structural vibrations of the solid objects of load carrying and flatsheet box-type structures of the bench. The article considers tested technical methods of improving vibroacoustics of load carrying and envelope structures of the engine test bench, which is in startup, commissioning and preliminary operation phase in the research center of a car manufacturer. Therewith there was a requirement to prevent any fundamental changes of the bench original basic construction, in order to minimize potential material and financial expenses for its reengineering process. Tested design solutions allow to reduce the level of parasitic noise disturbances, produced directly by the bench equipment in an anechoic chamber, up to 12 dBA.

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