Basic understanding of the process of coolant heat transfer inside an engine is an indispensable prerequisite to devise an infallible cooling strategy. Coolant flow and its heat transfer affect the cooling efficiency, thermal load of heated components, and thermal efficiency of a diesel engine. An efficient approach to studying cooling system for diesel engine is a 3D computational fluid dynami...

a newly developed heavy duty diesel engine in dual fuel mode of operation has been studied in detail. the main fuel would be natural gas and diesel oil as pilot injection. the importance and effects of mixture preparation and formation through ports, valves and in cylinder flow field with different swirl ratio and tumble on diesel combustion phenomena is an accepted feature which has been studi...

Research in this paper is concerned on bay cooling of the new type turboprop engine. The considered engine integration substantially increases temperature inside front nacelle compartment. In order to achieve optimal conditions for parts all operating regimes and engine/nacelle regime after aircraft landing at heat soak-back, a system proposed. Proposed consists standard NACA inlets nacelle, tw...

The combustion processes and emission formation in pre and main chambers of a Lister 8.1 IDI diesel are simulated with the Computational Fluid Dynamics (CFD) code. The model includes spray atomization, mixture formation and distribution and subsequently the combustion processes and emissions formation modeling are carried out with considering of flow configurations in two chambers. A part load ...

An on-the-fly mechanism reduction approach is employed in this paper to integrate detailed chemical kinetics with a computational fluid dynamics (CFD) code. The reduction methodology employs an instantaneous element flux analysis to identify redundant species and reactions for given local conditions. The emphasis of this work is focused on the numerical study of homogeneous charge compression i...

Centrifugal pumps are used in cooling the engine by pumping water as coolant into the engine. The normal function of the coolant is to discharge coolant at a specific velocity into the engine coolant volume, once the coolant crosses 150 C temperatures then it is taken to the radiator for cooling to 50 C. Due to changes in the engine design it is desired to have changes in the centrifugal pump d...

Natural gas-diesel dual fuel combustion is a beneficial strategy for achieving high efficient and low emissions operation in compression ignition engines, especially in genset application heavy duty diesel engine at rated power. This study aims to investigate a dual fuel engine performance and emissions using premixed natural gas and early direct injection of diesel fuel. Due to the different r...

A Monte Carlo–probability density function (pdf) method based on a Lagrangian particle technique to calculate the transported pdf of the thermochemical (scalar) properties has been implemented in the finite volume code KIVA-3 to model three-dimensional premixed transient combustion in a two-stroke engine. The main advantage of the pdf method is that chemical reactions in turbulent flows can be ...