11 research outputs found
RESEARCHES REGARDING THE DEVELOPMENT OF A MATHEMATICAL MODEL TO OPTIMIZE THE OPERATION OF THE ANTI-LOCK BRAKING SYSTEM
This paper presents a simplified model of a
passenger-carâs ABS (Anti-Lock Braking System). For
simplicity purpose, a âquarter-carâ planar model was
considered: a wheel in rotation movement and a mass in
translational movement (the vehicle mass supported by that
wheel). In these conditions, a very simple dynamic model was
obtained, having only two degrees of freedom (DOFs): the
wheel rotation and the translation of the âquarter-carâ mass.
The mathematical model consists in the motion equations of the
wheel and âquarter-carâ mass and in the equations describing
the comportment of the driver, controller, hydraulic module and
brake. The model was transposed in a Matlab-Simulink model,
offering the possibility to simulate many times how the ABS
works if the constructive parameters, road conditions or driver
inputs are changed
RESEARCHES REGARDING THE DEVELOPMENT OF A MATHEMATICAL MODEL TO OPTIMIZE THE OPERATION OF THE ANTI-LOCK BRAKING SYSTEM
This paper presents a simplified model of a
passenger-carâs ABS (Anti-Lock Braking System). For
simplicity purpose, a âquarter-carâ planar model was
considered: a wheel in rotation movement and a mass in
translational movement (the vehicle mass supported by that
wheel). In these conditions, a very simple dynamic model was
obtained, having only two degrees of freedom (DOFs): the
wheel rotation and the translation of the âquarter-carâ mass.
The mathematical model consists in the motion equations of the
wheel and âquarter-carâ mass and in the equations describing
the comportment of the driver, controller, hydraulic module and
brake. The model was transposed in a Matlab-Simulink model,
offering the possibility to simulate many times how the ABS
works if the constructive parameters, road conditions or driver
inputs are changed
A THERMAL-HYDRAULIC SYSTEM FOR THE CONVERSION AND THE STORAGE OF ENERGY
The paper proposes the concept design of a thermal-hydraulic system that converts the thermal energy (from the geothermal water, from the cooling water of power equipment, from exhaust gasses, and so.) in hydrostatic energy, that is stored in a hydraulic accumulator. The hydraulic energy can be converted into electrical energy when needed
THE CALCULUS OF THE FUEL CONSUMPTION AND OF THE INJECTION DURATION FOR A SPARK IGNITION ENGINE
In this paper is presented the calculus, designed
by the authors, of the fuel supply scheme for a multipoint
injection system. The calculated outputs are the fuel
consumption and the injection duration depending on the
rotational speed and on the environmental temperature. A
a computer program was developed to determine the parameters
of an SI engine in two cases: 1. the calculation of the injection
parameters depending on the rotational speed (n) and on the air fuel
ratio () for environmental temperatures t0=-35...+45 0C
and environmental pressures p0=1·105
Pa; 2. the calculation of
the injection parameters depending on the rotational speed (n)
and on the environmental temperature t0
for an air-fuel ratio =1
and environmental pressures p0=1·105
Pa
THE CALCULUS OF THE FUEL CONSUMPTION AND OF THE INJECTION DURATION FOR A SPARK IGNITION ENGINE
RESEARCH AND EXPERIMENTAL RESULTS REGARDING THE BURNING OF LEAN MIXTURES WITH ADDED ON BOARD PRODUCED HYDROGEN
The paper presents the results of an
experimental research in which a comparison is made between
the combustion phases of a gasoline engine operating with a
lean mixture and addition of hydrogen and a standard operating
one
A Retrospective Analysis from Western Romania Comparing the Treatment and Survivability of p16-Positive versus p16-Negative Oropharyngeal Cancer
Background: Oropharyngeal cancer is a global health concern due to its multifaceted nature. Recent molecular studies have linked p16 overexpression, associated with the human papillomavirus, to oropharyngeal cancer and its prognostic implications. Materials and Methods: This retrospective study in Western Romania examined 60 patients, categorizing them based on p16 biomarker status: 28 were p16 positive, and 32 were p16 negative. Statistical tests, including Fisherâs exact and chi2, were used for analysis. Results: Patients with p16-positive oropharyngeal cancer exhibited a better prognosis (3-year survival, p = 0.0477; midtreatment, p = 0.0349) and reported lower alcohol (p = 0.0046) and tobacco (p < 0.0001) use. Conclusions: The study highlights the importance of p16 testing in oropharyngeal carcinoma diagnosis. It suggests modifying treatment approaches based on p16 status and underscores the differing prognoses associated with p16-positive and p16-negative cases