Intake sound introducing apparatus
AssigneeSubaru Corporation
InventorsTetsuro Takahashi, Kenichi Tsuchiya, Takashi Seki
Life of this patent
Estimating the term…
Abstract
An intake sound introducing apparatus has, for example, a branch pipe, a sound creator, a communication pipe, and a resonator. The branch pipe branches from an intake pipe of the engine. The sound creator includes a vibrator that vibrates with the intake pulsation of the intake sound propagating within the branch pipe. The communication pipe provides communication between the inside of a casing of the sound creator and the inside of the cabin. The resonator is provided in the communication pipe.
Claims6
An intake sound introducing apparatus for introducing an intake sound of an engine mounted in a vehicle into a cabin, the intake sound introducing apparatus comprising:
- a branch passage branching from an intake system of the engine;
- a sound creator communicating with the branch passage, the sound creator having a vibrator vibrating with intake pulsation of the intake sound propagating within the branch passage, and a casing defining a space housing the vibrator;
- and
- a communication passage connecting to a hole provided in the casing and communicating fluidly with the space so as to transmit vibration of the vibrator into the cabin,
- wherein the communication passage has a stepped portion, and
- wherein the stepped portion is a reduced stepped portion, the reduced stepped portion jutting outward with respect to a downstream communication portion of the communication passage in which the reduced stepped portion is provided, the reduced stepped portion having an inside cross-sectional area larger than an inside cross-sectional area of the downstream communication portion and extending toward the intake system, the reduced stepped portion communicating with the sound creator.
Dependencies are inferred from the claim text.