Design of Low-Cost Solid Propellant Engine Test Bench and Electronic Embedded System used for Small Rockets

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.

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Development of a distributed electronic system for low-cost heavy-duty engine test bench

2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) ◽

10.1109/i2mtc43012.2020.9128530 ◽

2020 ◽

Author(s):

Olivier R. Gouveia ◽

Alexandre Borges ◽

Diogo Costa ◽

Diogo Coelho ◽

Paulo Lopes ◽

...

Keyword(s):

Test Bench ◽

Low Cost ◽

Electronic System ◽

Engine Test ◽

Engine Test Bench ◽

Heavy Duty

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

SN Applied Sciences ◽

10.1007/s42452-021-04340-x ◽

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.

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Design of an Engine Test Bench Based on Virtual Instrument Technology

2011 Fourth International Conference on Intelligent Computation Technology and Automation ◽

10.1109/icicta.2011.164 ◽

2011 ◽

Author(s):

Jiang Fachao ◽

Liu Entuo ◽

Wang Molin ◽

Li Lin

Keyword(s):

Virtual Instrument ◽

Test Bench ◽

Engine Test ◽

Engine Test Bench ◽

Instrument Technology

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

Akustika ◽

10.36336/akustika202139168 ◽

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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