this paper seeks to understand the role of the cost of pollution from vehicles fuel in feasibility of cng national plan. optimal control theory is used with two target functions, one with and another without the cost of pollution. model results indicate the high importance of pollution cost in the project feasibility, in such a way that without consideration of that the project will be infeasib...

Fuel combinations with substantial differences in reactivity, such as diesel/CNG, represent one of the most promising alternative combustion strategies these days. In general, conversion from diesel to dual-fuel operation can be performed existing in-use heavy-duty compression-ignition engines minimum modifications, which guarantee very little particles, less nitrogen oxide (NOx), and reduced n...

Road transportation has received the attention of researchers due to its higher carbon footprint. Alternative fuels present major advantages in terms environmental sustainability. For this reason, an enviro-economic analysis alternative carries great significance. However, scarce attempts have been rendered order ascertain impact a hydroxy gas (HHO) and compressed natural (CNG) mixture on susta...

in order to reduce wear in gudgeon pin, bush and piston boss lubrication is done. oil used in national engine species was 10w40 with dynamic viscosity 5.5 mpa.s at 140 °c (the working temperature). in order to complete investigation the oil film hydrodynamics analysis in small end of connecting rod, a real full model engine with four cylinders has been simulated by avl excite5.1 software. in th...

experiments were conducted to evaluate the performance of a low heat rejection (lhr) diesel engine. performance parameters and emission levels were determined at various magnitudes of brake mean effective pressure. combustion characteristics of the engine were measured with tdc (top dead centre) encoder, pressure transducer, console and special pressure-crank angle software package at peak load...

in order to comply with stringent pollutant emissions regulations, a detailed analysis of the engine combustion and emission is required. in this field, computational tools like cfd and engine cycle simulation play a fundamental role. therefore, the goal of the present work is to simulate a high speed di diesel engine and study the combustion and major diesel engine emissions with more details,...