Title:
【発明の名称】内燃機関のための吸気装置
Document Type and Number:
Japanese Patent JP2002506951
Kind Code:
A
Abstract:
An air induction device (11) for an internal combustion engine including an air filter housing (12) with an open induction tube (13) leading away from it and a supplementary induction tube (14) having a closing element, preferably in the area of its end opening (15). The closing element may take the form of a rotary flap (17) and is actuated depending on engine speed. The housing (12) and the induction tubes (13, 14) are configured in geometrical terms in such a way that at low engine rotational speeds, the housing (12) and the open induction tube (13) form a Helmholtz resonator, while the closed supplementary induction tube (14) forms a quarter-wave tube leading from the housing (12). At higher engine rotational speeds, the supplementary induction tube (14) is opened, and the overall length of the supplementary induction tube (14) is adapted so that at the higher speeds, it forms a Helmholtz resonator with the air filter housing (12) and the open induction tube (13).
Inventors:
Mattias Alex
Helmut Spannbauer
Helmut Spannbauer
Application Number:
JP2000536969A
Publication Date:
March 05, 2002
Filing Date:
March 04, 1999
Export Citation:
Assignee:
Filtel Welk Mann Und Hummel Gezershyaft Mitt Bethile Renktel Haftung
International Classes:
F02B27/02; F02M35/10; F02M35/12; F02M35/14; (IPC1-7): F02M35/10; F02B27/02
Attorney, Agent or Firm:
Toshio Yano (4 outside)