Air filter device for a motor vehicle

Patent metadata

Field	Value
Publication number	US-10844816-B2
Application number	US-201816032524-A
Country	US
Kind code	B2
Filing date	Jul 11, 2018
Priority date	Jan 15, 2016
Publication date	Nov 24, 2020
Grant date	Nov 24, 2020

Abstract

An air filter device for a motor vehicle is provided with a filter housing having an air inlet and an air outlet, a filter insert which is received in the filter housing and divides the inside of the filter housing into an untreated air section and a pure air section, and a bypass line for supplying air into the untreated air section. The bypass line extends from a connection opening in the filter housing to a cooler, especially a charge air cooler of the motor vehicle.

First claim

What is claimed is:

1. An air-supply assembly for an internal combustion engine of a motor vehicle, comprising:
an air-filter device, wherein the air-filter device includes:
a filter housing, which has an air inlet and an air outlet;
a filter insert, which is accommodated in the filter housing and subdivides an interior of the filter housing into an unfiltered-air portion and a clean-air portion; and
a bypass line for feeding air into the unfiltered-air portion,
wherein a first end of the bypass line is connected to a connection opening in the filter housing; and

an air-cooled charge-air cooler for cooling combustion air which is to be fed to the internal combustion engine, the charge-air cooler having an air-inlet side and an air-outlet side for cooling air and it being possible for cooling air to flow through said cooler in an air-flow direction,
wherein a second end of the bypass line is arranged directly on a periphery of the air-outlet side of the charge-air cooler,
wherein the charge-air cooler has a combustion-air inlet, which is in flow connection with a combustion-air outlet of the charge-air cooler via cooling ribs around which cooling air flows, and
wherein the second end of the bypass line is arranged closer to the combustion-air inlet than to the combustion-air outlet.

2. An air-supply assembly for an internal combustion engine of a motor vehicle, comprising:
an air-filter device, wherein the air-filter device includes:
a filter housing, which has an air inlet and an air outlet;
a filter insert, which is accommodated in the filter housing and subdivides an interior of the filter housing into an unfiltered-air portion and a clean-air portion; and
a bypass line for feeding air into the unfiltered-air portion,
wherein a first end of the bypass line is connected to a connection opening in the filter housing; and

an air-cooled charge-air cooler for cooling combustion air which is to be fed to the internal combustion engine, the charge-air cooler having an air-inlet side and an air-outlet side for cooling air and it being possible for cooling air to flow through said cooler in an air-flow direction,
wherein a second end of the bypass line is arranged directly on a periphery of the air-outlet side of the charge-air cooler,
wherein the periphery of the air-outlet side is adjacent to a combustion-air inlet of the charge-air cooler.

3. An air-supply assembly for an internal combustion engine of a motor vehicle, comprising:
an air-filter device, wherein the air-filter device includes:
a filter housing, which has an air inlet and an air outlet;
a filter insert, which is accommodated in the filter housing and subdivides an interior of the filter housing into an unfiltered-air portion and a clean-air portion; and
a bypass line for feeding air into the unfiltered-air portion,
wherein a first end of the bypass line is connected to a connection opening in the filter housing;

an air-cooled charge-air cooler for cooling combustion air which is to be fed to the internal combustion engine, the charge-air cooler having an air-inlet side and an air-outlet side for cooling air and it being possible for cooling air to flow through said cooler in an air-flow direction,
wherein a second end of the bypass line is arranged directly on a periphery of the air-outlet side of the charge-air cooler, and
a fan provided adjacent to the air-outlet side of the charge-air cooler, said fan forcing the cooling air in the air-flow direction and having a fan wheel and a fan frame, wherein
the second end of the bypass line is fastened on the fan frame and is in flow connection with the air-outlet side of the charge-air cooler via an opening in the fan frame.

4. The air-supply assembly as claimed in claim 3 , wherein
the fan frame has a flap, which releases or blocks the opening in the fan frame.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Bartl Johannes
• Raab Volker
• Debevec Christian
• Baumgartner Werner

Classifications

• F02M35/082

  By-pass means · CPC title

• F02M35/14

  Combined air cleaners and silencers · CPC title

• F02M35/0209

  comprising flexible, resilient, movable or rotatable elements, e.g. with vibrating or contracting movements; Springs; Valves; Flaps (F02M35/06, F02M35/08 take precedence) · CPC title

• F02M35/0204

  for connecting or joining to other devices, e.g. pipes · CPC title

• F02M35/108

  with primary and secondary intake passages · CPC title