Engine intake air duct
AssigneesInoac Corporation, Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Toyota Jtdoshokkt
InventorsKatsuhiro Tange, Haruki Kato, Kyosuke Nonoyama, Yusuke Hoshikawa
Life of this patent
Estimating the term…
Abstract
An engine intake air duct 1 has an intake portion 10 that extends along a first center line A, and a main duct portion 20 that extends along a second center line B. The main duct portion 20 has a merging portion 50, a discharge opening 21, and an extending portion 40 that extends from the merging portion 50 towards an opposite end to the discharge opening 20. A reflecting wall 41 is provided at an end face of the extending portion 40. The intake portion 10 merges with the main duct portion 20 in such a way that the first center line A is directed towards a downstream end of the main duct portion 20.
Claims7
An engine intake air duct configured to be connected to a vehicle air cleaner, the engine intake air duct comprising:
- an intake portion having an intake opening configured to draw in air, the intake portion extending along a first center line of the intake portion;
- a merging portion provided at the intake portion;
- a main duct portion having a discharge opening configured to discharge the air towards the vehicle air cleaner, the main duct portion extending along a second center line of the main duct portion, such that the main duct portion has a straight portion extending from the merging portion along the second center line;
- and
- an extending portion provided at the merging portion, the extending portion extending from the merging portion towards a location opposite to the straight portion and along a third center line of the extending portion,
- wherein a reflecting wall configured to reflect a sound from the vehicle air cleaner is provided at an end face of the extending portion such that the reflecting wall is perpendicular to each of the second center line of the straight portion of the main duct portion and the third center line of the extending portion,
- wherein the intake portion merges with the main duct portion in such a way that the first center line of the intake portion is directed towards the straight portion of the main duct portion,
- wherein the intake portion is defined by a curved segment such that with respect to a direction of a flow of the air in the straight portion of the main duct portion, a downstream point within the curved segment and on the first center line of the intake portion is always situated farther from the reflecting wall than an upstream point within the curved segment and on the first center line of the intake portion,
- wherein a width dimension of an entirety of the extending portion, in an area from the reflecting wall to the merging portion is greater than a width dimension of the straight portion of the main duct portion, and
- wherein the third center line of the extending portion is out of alignment with the second center line of the straight portion of the main duct portion such that with respect to a direction of a flow of air through the intake opening of the intake portion, the third center line of the extending portion is located closer to the intake opening than the second center line of the straight portion of the main duct portion a portion.
Dependencies are inferred from the claim text.