An intake plenum is for a marine engine, the marine engine having first and second throttle devices for controlling flow of intake air to the marine engine. The intake plenum has an airbox providing an expansion volume, first and second inlets that convey the intake air in parallel to the expansion volume, first and second outlets that convey the intake air in parallel from the expansion volume to the first and second throttle devices, and first and second Helmholtz-style attenuator devices located at the first and second outlets, respectively. Together the first and second inlets, expansion volume, and first and second Helmholtz-style attenuator devices are configured to attenuate different frequencies of sound emanating from the marine engine via the first and second outlets.


    Access

    Download


    Export, share and cite



    Title :

    Air intake plenum for attenuating sound from a marine engine


    Contributors:

    Publication date :

    2022-06-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen / B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / F02B INTERNAL-COMBUSTION PISTON ENGINES , Brennkraftmaschinen mit innerer Verbrennung mit Verdrängerwirkung / F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF



    Air intake plenum for attenuating sound from a marine engine

    REICHARDT DOUGLAS D / AMBAVARAM AMEER B / WAISANEN ANDREW S | European Patent Office | 2023

    Free access

    Integrated intake plenum and crankcase cover for an outboard marine engine

    HOFFMAN DANIEL P / VANDENABEELE JEFFREY A / IDZIKOWSKI GEORGE D | European Patent Office | 2018

    Free access


    Integration of 3D-CFD and Engine Cycle Simulations: Application to an Intake Plenum

    Mattarelli, E. / Montorsi, L. / Borghi, M. | SAE Technical Papers | 2001


    Acoustic cores with sound-attenuating protuberances

    LIN WENDY WENLING / MURUGAPPAN SHANMUGAM / DAVIDOFF ROBERT WILLIAM et al. | European Patent Office | 2024

    Free access