This paper studies the influence of the discharge chamber geometrical parameters on the steady-state characteristics behavior of a conical seat valve having compensating profile.More in details, starting from the analysis of the experimental behavior of an actual valve showing inefficient characteristic curves, the metering openings leading to the transition from under to over compensation are individuated.Then, a 3D CFD steady-state, incompressible and isothermal analysis is involved, mainly to evidence the valve discharge coefficient and flow-forces variations with operating conditions.After, two alternative valve configurations, presenting a low pressure region designed to optimize the flow-forces compensation, are characterized through the 3D CFD analysis.
The Effect of Flow Forces Compensating Profile on the Metering Characteristics of a Conical Seat Valve / Borghi, Massimo; Milani, Massimo; Paltrinieri, Fabrizio. - In: SAE TECHNICAL PAPER. - ISSN 0148-7191. - STAMPA. - (2004), pp. -----. (Intervento presentato al convegno SAE Commercial Vehicle Engineering Congress and Exhibition tenutosi a Chicago, IL nel October 26-28) [10.4271/2004-01-2618].
The Effect of Flow Forces Compensating Profile on the Metering Characteristics of a Conical Seat Valve
BORGHI, Massimo;MILANI, Massimo;PALTRINIERI, Fabrizio
2004
Abstract
This paper studies the influence of the discharge chamber geometrical parameters on the steady-state characteristics behavior of a conical seat valve having compensating profile.More in details, starting from the analysis of the experimental behavior of an actual valve showing inefficient characteristic curves, the metering openings leading to the transition from under to over compensation are individuated.Then, a 3D CFD steady-state, incompressible and isothermal analysis is involved, mainly to evidence the valve discharge coefficient and flow-forces variations with operating conditions.After, two alternative valve configurations, presenting a low pressure region designed to optimize the flow-forces compensation, are characterized through the 3D CFD analysis.
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