Improving performances of a lean burn cogeneration biogas engine equipped with combustion prechambers
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Nowadays, most of the natural gas conversion systems available on the market for bifuel vehicles are based on the venturi principle or on the continuous injection principle for the carburation of the engine. Even if the driveability of these systems is sat ...
In Switzerland there is a significant interest to use natural gas as a vehicle fuel. This interest stems from both a desire to reduce the environmental pollution caused by automobiles and a wish to diversify the sources of energy supply. The current “state ...
In response to strong environmental concerns, considerable effort has been directed at identifying actual emissions resulting from light natural gas vehicles operation by the Swiss Federal Institute of Technology in Lausanne. Claims are frequently made reg ...
Tests were undertaken with a Renault Express 1.4 litre converted to natural gas operation. The effect of cold starts at cold temperatures and vehicle weight on tail pipe emissions were investigated with petrol and natural gas operation over the FTP75 and t ...
The Swiss limit for NOx exhaust gas emissions from decentralised electrical power and heat cogeneration units using stationary I.C. engines operating on natural gas, despite a recent increase from 80 to 250 mg/mN3 (5% O2), remains the most severe in force ...
Test were undertaken with a Renault Express 1.4 litre converted to natural gas operation. The effect of cold starts at cold temperatures and vehicle weight on taile pipe emissions were investigated with petrol and natural gas operation over the FTP75 and 9 ...
A medium size diesel engine converted to natural gas operation on the Otto principle has been studied under stoichiometric and lean burn operation in order to evaluate the potential to reduce the NOX exhaust gas emissions below the stringent limit prescrib ...
The technology gap between liquid and gaseous fuels presents an obstacle in realising the environmental and performance potential of CNG vehicles. Therefore a gaseous fuel injector has been developed to cope with the considerable larger volume flow rated r ...
In the frame of the decentralised electrical power and heat cogeneration with stationary I. C. engines operating on natural gas, the Swiss limit for exhaust gas emissions, with 80 mg/mN3 (5% O2), is the most severe in force on an international level. On th ...