CORDIS oferuje możliwość skorzystania z odnośników do publicznie dostępnych publikacji i rezultatów projektów realizowanych w ramach programów ramowych HORYZONT.
Odnośniki do rezultatów i publikacji związanych z poszczególnymi projektami 7PR, a także odnośniki do niektórych konkretnych kategorii wyników, takich jak zbiory danych i oprogramowanie, są dynamicznie pobierane z systemu OpenAIRE .
Rezultaty
The single cylinder research engine AVL 530 (2lit/cyl) was modified for the adaptation of the advanced common rail fuel injection system APCRS. Experimental studies were carried out which focused on the optimisation of engine combustion (minimisation of harmful exhaust gas emissions and optimisation of thermal efficiency). The engine development procedure was improved (combination of experimental work with computer simulations). Engine combustion was analysed in detail by optical measurements which improved the basic understanding of combustion phenomena.
The results were provided to partners and were analysed and discussed within the consortium. They contributed to the final development work, which was carried out on a multi cylinder engine (by partner IVECO MF). The hardware can be used by the Owner for further studies and research projects for additional know-how increase.
The APCRS is a common rail based injection system. It was designed, optimised for the project and procured by Robert Bosch GmbH. For each cylinder it consists of an amplifier piston module and a common rail injector.
A high pressure pump delivers fuel to the rail and then to the amplifier piston modules.
Each amplifier piston module increases the pressure according to the geometric amplification ratio and is connected to the injector via a high pressure pipe.
An ECU controls the timing of the actuators for amplifier piston module and injector. For multi cylinder engines one ECU can control up to three cylinders.
The principle demonstrated by such a system can be applied to diesel engines of medium to heavy types for various purposes (transport, industrial, marine electrical generating sets).
Main technical features of the system are the very high injection pressure, the capability to perform main injection rate shaping and the ability to perform up to five injections per combustion cycle.
These features are necessary to optimise combustion for emission reduction and fuel consumption control.
Possible clients are diesel engines OEM Companies.
The results are the build up of mathematical models for simulation of:
- Fuel injection in cold high-pressure non-reacting environments for the investigation of spray structure.
- Fuel injection, mixture formation, ignition and combustion in heavy duty Diesel truck engines.
- Phenomenological zero-dimensional thermodynamic models for the prediction of soot and NOx formation.
The models had a first step validation based on tests result on base engine or similar. Following validations have been done based on results coming from experimental activities done with the specific items of the Project.
Numerical data are related to tests done as per result 3 and applied in the tests as per result 4.
Interactive data exchanges between Partners did allow validations and models improvement from one side and a more complete and scientific data analysis from the other side.
The results do represent progress in the computation of the interested phenomena. Attention has been paid also to the computing time with the effort to reduce it drastically.
The interest of such reduction open future ways for in real time calculations with possible integrations into the control strategies.
Models can be applied by the owner for further studies and know-how increase.
The result is the build up of:
- 1 single-cylinder for combustion studies;
- 1 test rig for studies on spray formation.
The preparation of devices has been completed by the build up of tests methodologies.
Above hardware and methodologies have been utilized for parametric studies on combustion and on spray behaviour.
Various visualization devices, based on advanced techniques, have been used.
Dedicated adaptations and tunings did produce an increase of possibilities and know-how in the field of combustion studies, spray investigations and high-speed phenomenological detection.
During the project activities, the methodologies have been exploited, validated and improved.
The results, continuously coming from tests, have been provided to partners, analysed in an interactive way, integrated with additional tests in order to build up a scientific base for the final developments on the multi-cylinder.
The hardware could be used by the owner for further studies and researches in other projects and activities for additional know-how increase.
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