EP 0897468 B1 20020123 - AIR INTAKE SYSTEM FOR AN INTERNAL COMBUSTION ENGINE
Title (en)
AIR INTAKE SYSTEM FOR AN INTERNAL COMBUSTION ENGINE
Title (de)
ANSAUGVORRICHTUNG FÜR EINEN VERBRENNUNGSMOTOR
Title (fr)
DISPOSITIF D'ADMISSION POUR MOTEUR A COMBUSTION INTERNE
Publication
Application
Priority
- DE 19618432 A 19960508
- EP 9702361 W 19970507
Abstract (en)
[origin: DE19618432A1] The invention concern an air intake system for an internal combustion engine. The intaken air passes via an air filter (3) to the internal combustion engine. Within the intake passage an attenuation volume (5) is provided which acts as a Helmholtz resonator. The size of the attenuating volume is such that a given noise frequency range can be attenuated. To achieve optimum noise reduction at least a partial flow of air passes through the attenuation volume (5) and the size of the effective attenuation volume (5) through which the air passes can be varied by reversible switches and valves.
IPC 1-7
IPC 8 full level
F02M 35/10 (2006.01); F02M 35/12 (2006.01); F02M 35/14 (2006.01)
CPC (source: EP US)
F02M 35/1222 (2013.01 - EP US); F02M 35/1227 (2013.01 - EP US); F02M 35/1261 (2013.01 - EP US); F02M 35/14 (2013.01 - EP US)
Designated contracting state (EPC)
DE ES FR GB
DOCDB simple family (publication)
DE 19618432 A1 19971113; BR 9708924 A 19990803; CA 2254138 A1 19971113; CZ 360898 A3 19990616; DE 59706189 D1 20020314; EP 0897468 A1 19990224; EP 0897468 B1 20020123; ES 2171936 T3 20020916; IN 188548 B 20021012; JP 2000509461 A 20000725; US 6135079 A 20001024; WO 9742408 A1 19971113; ZA 973820 B 19971114
DOCDB simple family (application)
DE 19618432 A 19960508; BR 9708924 A 19970507; CA 2254138 A 19970507; CZ 360898 A 19970507; DE 59706189 T 19970507; EP 9702361 W 19970507; EP 97923023 A 19970507; ES 97923023 T 19970507; IN 291BO1997 A 19970508; JP 53955297 A 19970507; US 18043399 A 19990302; ZA 973820 A 19970502