Wyniki wyszukiwania - BazTech

Ograniczanie wyników

2 Journal of KONES

2 2006

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: non-conventional ICE

Sortuj według:

Ogranicz wyniki do:

Control of the air excess coefficient for the non-conventional engine

Hlavňa V., Sojčák D., Isteník R.

Journal of KONES

2006

Vol. 13, No. 2

117-124

One of the elements significant for the testing of combustion engines is the equipment for measurement of air consumed by the engine. The air excess coefficient, which depends on air consumption, is an important variable required for classification of combustion processes and evaluation for engine gas emissions. The paper deals with the solution of a flow field of a designed non-standardized measuring element with the objective of measurements and control of the air excess coefficient of the non-conventional combustion engine. In particular test stand (combustion engine – absorptive cooling equipmen)t, measuring element of the suction section of the combustion engine, modeling of the boundary layer, distribution of velocities and pressure field, distribution of density and temperatures in the flow field, course of static pressure and velocity in the measuring element axis for the engine torque, velocity profiles in cross sections, regulation of y+ parameter, comparison of velocities in dependence on torque, comparison of mass flow and pressure difference, contour of kinetic turbulent energy m2.s-2 for standardized and non-standardized measuring element, search dependence are presented in the paper.

Circumfluence of the cylinder in a non-conventional combustion engine

Hlavňa V., Sojčák D.

Journal of KONES

2006

Vol. 13, No. 2

111-115

When solving the project "A non-conventional energetic unit equipped with a cooling combustion engine" it was necessary to deal with flow and transfer of heat along the cylinder liner The contribution is a continuation of already published results gathered from experiments focused on the circumfluence of the combustion engine cylinder by a traditional cooler. The paper points out heat flows, velocity profiles, and turbulent intensity during the cylinder liner circumfluence by a non-conventional cooler – lithium bromide. Non-conventional cooling circuit of the engine, physical properties of the coolant for the engine (including specific heat capacity, absolute viscosity, density and thermal conductivity), model net, adaptation in the boundary layer area, velocity field in the vicinity of the inserted cylinder and the liner temperature profile from the side soaked with fluid, pressure field in the inserted cylinder chamber and temperature field of heat transfer, turbulent intensity on the cylinder liner and streamlines of the flow field are presented in the paper.The examined combustion engine will be able of a long-term operation when the alternate coolant is used