Patent ID: 11859582
Assignee: MAZDA MOTOR CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 0:
1. An engine intake sound amplifier for amplifying intake sound that is transmitted from an engine mounted in an engine compartment of a vehicle to a cabin, the engine intake sound amplifier comprising:
a first passage branched from an intake passage through which intake air is introduced into the engine;
a device body that includes a vibration body vibrated by pulsation of the intake air and is connected to a downstream end portion of the first passage; and
a second passage that is connected to a downstream end portion of the device body and extends toward the cabin, wherein
a side frame extends in a vehicle front-rear direction and separates an inside of the engine compartment from an outside in the vehicle width direction,
at least a part of the device body is located outward in a vehicle width direction of the side frame,
the second passage includes:
an outer portion that is arranged outward in the vehicle width direction of the side frame; and
an inner portion that is arranged inward in the vehicle width direction of the side frame, and
a passage length of the outer portion is longer than a passage length of the inner portion.