Intake device
AssigneesDenso Corporation, Toyota Jidosha Kabushiki Kaisha
InventorsShinichi Kamiya, Shunsuke Rikitake
Life of this patent
Estimating the term…
Abstract
An intake device includes an air filter that filters intake air for an internal combustion engine, a filter casing housing the air filter, and an air physical quantity sensor. The filter casing includes an intake passage to allow the intake air to pass from upstream to downstream of the air filter. The filter casing has a passage wall portion that is electrically conductive and exposed to the intake passage on a downstream side of the air filter. The air physical quantity sensor has: a sensor element that detects a specific physical quantity related to the intake air on a downstream side of the air filter; and a grounding structure electrically connected to the passage wall portion for grounding the sensor element.
Claims9
An intake device comprising:
- an air filter that filters intake air for an internal combustion engine;
- a filter casing housing the air filter and including an intake passage to allow the intake air to pass from upstream to downstream of the air filter, the filter casing having a passage wall portion located downstream of the air filter, the passage wall portion being electrically conductive and exposed to the intake passage;
- and
- an air physical quantity sensor having
- a sensor element located downstream of the air filter to detect a specific physical quantity related to the intake air, and
- a grounding structure electrically connected to the passage wall portion for grounding the sensor element;
- wherein:
- the sensor element is connected to the grounding structure through a circuit board, and the grounding structure grounds the passage wall portion and the sensor element at a same electric potential;
- and
- the grounding structure includes a conductive plate in a direct contact with the passage wall portion and the circuit board.
Dependencies are inferred from the claim text.