Adrian TODORUŢ


20-75 DETERMINAREA CARACTERISTICILOR FIZICOCHIMICE ALE BIOCOMBUSTIBILILOR PE BAZĂ DE ULEI ALIMENTAR UZAT, ÎN AMESTEC CU MOTORINA

THE DETERMINATION OF THE PHYSICO-CHEMICAL
BIOFUEL WHITH FUEL BASED OF USED COOKING OIL IN
COMBINED WITH DIESEL
Mentioning that low caloric power of biofuel based of used cooking oil
(36867 kJ/kg) is inferior to diesel (41800 kJ/kg) it was trying partial replace of
diesel with monoester from used cooking oil regarding the mainteining of the
engine power concomitent with the drop of the polluants from exaust gases.
Folowing this, after the fabrication and setting up of the optim recepy of biofuel
from used cooking oil, it was done the mix of biofuel and diesel, in different
proportion, wich are label related to basic material, beeing experimental
determinated the densieties and cinemati viscocieties of new fuels, compared
with diesel, at temperatures between 580 0C. It was detected a growing of
density and viscosity of fuel based of used cooking oil compared with diesel
around 3,148 % and 26,44 % on the whole scale of trying temperatures.
Keywords: compression-ignition engines, biodiesel, density, viscosity
Cuvinte cheie: motor cu aprindere prin comprimare, biodiesel,
densitate, viscozitate

75 DETERMINAREA CARACTERISTICILOR FIZICOCHIMICE


20-76 EVALUAREA DISTANŢEI DE SIGURANŢĂ DINTRE AUTOVEHICULE LA DESPRINDEREA DIN COLOANĂ, ÎN VEDEREA DEPĂŞIRII

EVALUATING THE SAFETY DISTANCE BETWEEN
VEHICLES WHEN INITIATING THE OVERTAKE
Depending of frequent variants meet in the overtake driving practice, it
is emphasized the influence of the driver’s time reaction and of the vehicles
speed on minimum safety distance when initiating the overtake.
Keywords: driver reaction time, distance, safety, performance
exceeded
Cuvinte cheie: conducător auto, timp de reacţie, distanţă de siguranţă,
efectuarea depăşirii

76 EVALUAREA DISTANŢEI DE SIGURANŢĂ DINTRE


22-59 ASPECTE CU PRIVIRE LA RECONSTRUCŢIA ACCIDENTELOR RUTIERE BICICLETĂ-AUTOMOBIL

In this paper is presented the bicycle-automobile’s frontal collision
case, study in which were taken in consideration four comparison cases of the
bicycle’s and/or biker’s throw distance related with the collision speed after
different criterions (at minimum/medium/maximum collision speed; between the
bikers’ sexes; related to the bikers’ age; related with the bicycle’s types). The
bicycles’ and bikes’ masses were considered having medium values, not being
treated particular cases from this point of view.
Cuvinte cheie: bicicletă, automobil, reconstrucție accident rutier
Keywords: bicycle, automobile, accident reconstruction

59 ASPECTE CU PRIVIRE LA RECONSTRUCŢIA


22-58 MODELAREA REŢINERII PASAGERULUI DE CĂTRE CENTURA DE SIGURANŢĂ

The paper presents a physical model of a passenger hold by the
seatbelt. Based on this model one calculates the total movement of the
passenger during the accident, the passenger’s movement at constant speed,
his deceleration to maximal and minimal values; the passenger’s movement
related to time and the safe values of the required displacement of his chest in
case of accidents at different collision speed and also the chest movement in
the car’s habitat in order to be safe in case of accident.
Cuvinte cheie: automobil, pasager, accident rutier, siguranţă pasivă,
centura de siguranţă, reţinerea ocupanţilor, modelare
Keywords: vehicle, passenger, traffic accident, passive safety, seat
belt, keeping occupants, modeling

58 MODELAREA REŢINERII PASAGERULUI DE CĂTRE


22-57 POSIBILITĂŢI DE EVALUARE A PARAMETRILOR CAPACITĂŢII DE DEMARARE A AUTOVEHICULELOR

The paper presents some calculus algorithms of the automotive start
up capacity. The method is aimed to be used for any type of autovehicles.
Cuvinte cheie: autovehicul, demaraj, algoritmi de calcul
Keywords: autovehicle, start up, calculus algorithms

57 POSIBILITĂŢI DE EVALUARE A PARAMETRILOR