For energetically performance improvement and pollution level decreases of diesel engine different methods were applied, as the modifying of the energetically solution, exhaust gases after-treatment and some alternative fuel use (ethanol, methanol, biodiesel, DME, CNG, LPG e.g.) in different fuelling solution as direct injection or intake fuelling. Thought, the available information’s in the trade literature for a complete analyse of alternative fuel diesel engine performances are insufficient. This happens also because of the operating and design particularities of the diesel engines used for experimental researches. In the paper the authors show the results of an theoretically and experimental investigations achieved on a 1.5 L common rail diesel engine dual fuelled with LPG and diesel fuel by diesel-gas method. The diesel-gas method is simple and can be applied with minimal modifications also for the engines in use. Is very difficult to use only LPG at the diesel engine because it has an auto ignition high endurance (CN = −2 to −3), different fuelling methods being use. By diesel-gas method the LPG is injected in the inlet manifold and forms with the air a homogeneous mixture, ignited by a diesel fuel pilot, the combustion being developed thru the homogeneous mixture from the combustion chamber. The general objective of this paper is the reduction of the diesel engine pollutant emissions by LPG use, without affecting the energetically performances. The specific objectives of this research are the establishment of the optimal LPG cycle dose and setup of the diesel engine optimal adjustments for all engine operating regimes.
Theoretical and Experimental Investigations on the LPG Fuelled Diesel Engine
Lect. Notes Electrical Eng.
2012-11-07
13 pages
Article/Chapter (Book)
Electronic Resource
English
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