EP 1982055 A1 20081022 - METHOD FOR PRODUCING A FREQUENCY SPECTRUM IN AN EXHAUST PIPE OF AN INTERNAL COMBUSTION PISTON ENGINE
Title (en)
METHOD FOR PRODUCING A FREQUENCY SPECTRUM IN AN EXHAUST PIPE OF AN INTERNAL COMBUSTION PISTON ENGINE
Title (de)
VERFAHREN ZUM ERZEUGEN EINES FREQUENZSPEKTRUMS IN EINER AUSPUFFROHRLEITUNG EINER HUBKOLBENMASCHINE
Title (fr)
PROCEDE DE PRODUCTION D'UN SPECTRE DE FREQUENCE DANS UNE LIGNE D'ECHAPPEMENT D'UN MOTEUR A PISTONS ALTERNATIFS
Publication
Application
Priority
- EP 0311462 W 20031016
- DE 10248607 A 20021017
Abstract (en)
[origin: WO2004036001A1] The invention relates to a method for producing a frequency spectrum in an internal combustion piston engine, wherein a throttle valve functioning as a flow modulator is displaced in an oscillating manner inside the exhaust pipe, such that the frequency spectrum is modified in the exhaust flow. The drive of the throttle valve is controlled by means of a signal generator such that the oscillating throttle valve produces the desired frequency spectrum.
IPC 8 full level
F01N 1/16 (2006.01); G10K 11/16 (2006.01); G10K 11/178 (2006.01); G10K 15/02 (2006.01); G10K 15/04 (2006.01)
CPC (source: EP)
F01N 1/165 (2013.01); F01N 1/168 (2013.01); G10K 11/161 (2013.01); G10K 15/02 (2013.01); G10K 15/04 (2013.01); F01N 2470/10 (2013.01)
Citation (search report)
See references of WO 2004036001A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004036001 A1 20040429; AT E437296 T1 20090815; DE 10248607 A1 20040506; DE 50311740 D1 20090903; EP 1982055 A1 20081022; EP 1982055 B1 20090722
DOCDB simple family (application)
EP 0311462 W 20031016; AT 03757989 T 20031016; DE 10248607 A 20021017; DE 50311740 T 20031016; EP 03757989 A 20031016