C O N T E N T S

Calimanesti- Caciulata - Cozia zone, on the Olt Valley. An important
power potential about 3.6 MW is pointed out, (1.4 MW electric power
and 2.2 MW thermal power). The electricity may be locally consumed or
injected in the electric grid, while the thermal energy can be delivered to
residential consumers.
Key words: cogeneration, gas engine unit, geothermal district
heating.
COMPUTATIONAL MODELLING OF THERMAL STRESSES IN
THE COMBUSTION CHAMBER OF A SPARK IGNITION
ENGINE FUELED WITH ETHANOL-GASOLINE BLENDS
by
KRISZTINA UZUNEANU 1 and EUGEN GOLGOŢIU
Abstract The thermal stresses in the combustion chamber of
an internal combustion engine are determined as a function of the
level of temperature. Measuring the temperatures in different parts
of the piston and cylinder head, we can adjust the cooling, or we
can improve the materials, or even we can improve the properties
of the fuels. The present paper deals with the thermal stresses in the
combustion chamber of a spark ignition engine fueled with a blend
of gasoline with ethanol.
Key words: piston head, cylinder head, thermal stress, ethanolgasoline.
COMPUTER SIMULATION OF NONSTATIONARY FLOW
THROUGH THE TURBOCHARGER UNIT CHARGE
OF SUPERCHARGED DIESEL ENGINES
by
SALVADORE MUGUREL BURCIU
Abstract. This paper presents the mathematical model behind the
computer program, which allows simulation of nonstationary flow
through the compressor unit of charge with free rotation of supercharged
diesel engines. Phoenics software program developed by using personal
subroutines can be used to simulate the nonstationary flow through the
turbocharger VTR 200R of MB836 Db turbocharged diesel engine. In the
paper are presented in graphical form, some results obtained for 3D nonstationary
flow through the turbocharger compressor rotor.