Air filter system of a motor vehicle
First Claim
Patent Images
1. An air filter system of a motor vehicle, comprising:
- an air filter housing conducting an intake air flow, said air filter housing comprising a housing part of a moisture-sensitive plastic material; and
an air passage section having an air flow course within conducting said intake air flow in an air flow direction, said air passage section includinga passage wall extending in said air flow direction and circumferentially surrounding said air flow course along said air flow directionwherein said passage wall has an inner side facing said air flow course,wherein said passage wall of said air passage section is integrally formed of identical material on said housing part of said air filter housing;
a mass air flow sensor arranged in said air passage section and operative to measure drawn-in mass air flow of said intake air flow;
a plastic insert of a moisture-insensitive plastic material disposed on said inner side of said passage wall of said air passage section, said plastic insert includingan enveloping circumferential wall arranged on said inner side of said passage wall and extending in said air flow direction, said enveloping circumferential wall circumferentially enclosing a flow cross-section through which said air flow course extends,said enveloping circumferential wall extending from a location upstream of said mass air flow sensor to a location downstream of said mass air flow sensor,said enveloping circumferential wall lining said inner side of said passage wall, separating said intake air flow in said plastic insert from said passage wall.
1 Assignment
0 Petitions
Accused Products
Abstract
An air filter system of a motor vehicle has an air filter housing with a housing part of a moisture-sensitive plastic material and an air passage section with a circumferentially extending passage wall, wherein the passage wall of the air passage section is integrally formed of identical material on the housing part of the air filter housing. A mass air flow sensor is arranged in the air passage section. A plastic insert of a moisture-insensitive plastic material is disposed on an inner side of the passage wall of the air passage section and lines the passage wall.
-
Citations
13 Claims
-
1. An air filter system of a motor vehicle, comprising:
-
an air filter housing conducting an intake air flow, said air filter housing comprising a housing part of a moisture-sensitive plastic material; and an air passage section having an air flow course within conducting said intake air flow in an air flow direction, said air passage section including a passage wall extending in said air flow direction and circumferentially surrounding said air flow course along said air flow direction wherein said passage wall has an inner side facing said air flow course, wherein said passage wall of said air passage section is integrally formed of identical material on said housing part of said air filter housing; a mass air flow sensor arranged in said air passage section and operative to measure drawn-in mass air flow of said intake air flow; a plastic insert of a moisture-insensitive plastic material disposed on said inner side of said passage wall of said air passage section, said plastic insert including an enveloping circumferential wall arranged on said inner side of said passage wall and extending in said air flow direction, said enveloping circumferential wall circumferentially enclosing a flow cross-section through which said air flow course extends, said enveloping circumferential wall extending from a location upstream of said mass air flow sensor to a location downstream of said mass air flow sensor, said enveloping circumferential wall lining said inner side of said passage wall, separating said intake air flow in said plastic insert from said passage wall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
Specification