Estudio de la variación del acabado superficial del cilindro en función de la presión de diseño en los hidromotores de pistones radiales. // Cylinder superficial finish variation study in function of design pressure in radial pistons hydromotors.
Abstract
En este artículo se realiza un estudio teórico de la tendencia del comportamiento de la rugosidad superficial en los cilindros
de los motores hidráulicos tipo estrella para mantener constante la eficiencia volumétrica ante un incremento de la presión
de trabajo. Con el objetivo de determinar la tendencia de como influye la presión de diseño en la tecnología de construcción
del motor. La tendencia moderna es construir hidromotores con presión de diseño elevada para alcanzar altas densidades de
potencia, para este empeño se utiliza la ley de Poiseuille para establecer el modelo de fuga entre cilindro y pistón. El
modelo de la holgura se establece a partir de suponer lineal el comportamiento descrito en la literatura consultada, se
obtienen resultados de rugosidad del cilindro contra presión para mantener la eficiencia volumétrica constante. Queda
demostrado que el ensayo, para inferir los valores necesarios para el cálculo a realizar, se realiza sobre un cilindro similar al
cilindro del motor.
Palabras claves: Eficiencia volumétrica, algoritmo, motores hidráulicos, acabado superficial, fugas.
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Abstract.
In this article is carried out a theoretical study of the tendency of superficial ruggedness behavior in cylinders of hydraulic
motors (star type) to maintain constant the volumetric efficiency when is applied an increment of working pressure with
the objective of determining the tendency of how the design pressure influences in the motor construction technology.
Since the modern tendency is to build hydromotors with risen design pressure in order to reach high power densities, for
this engagement the law of Poiseuille is used to establish the fugue pattern between cylinder and piston.
The looseness model is stated starting from supposing lineal the behavior described in the consulted literature, results of the
cylinder ruggedness against pressure are obtained to maintain the volumetric efficiency constant. It is demonstrated that the
rehearsal, to infer the necessary values for the calculation, is carried out on a similar cylinder to the cylinder motor.
Key words: Volumetric efficiency, algorithm, hydraulic motors, superficial finish, looseness.
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