Vehicular suction noise transmission system

Patent metadata

Field	Value
Publication number	US-2016265479-A1
Application number	US-201615064599-A
Country	US
Kind code	A1
Filing date	Mar 9, 2016
Priority date	Mar 13, 2015
Publication date	Sep 15, 2016
Grant date	—

Abstract

A vehicular suction noise transmission system includes a first intake apparatus, a second intake apparatus, a fuel recirculation apparatus, and a sound creator apparatus. The first intake apparatus is connected to an internal combustion engine mounted in a vehicular engine compartment. The second intake apparatus is connected to the internal combustion engine. The sound creator apparatus includes a first sound creator end, a second sound creator end, and a sound creator. The first sound creator end is connected to the second intake apparatus. The second sound creator end is in communication with a vehicle interior. The sound creator is provided to separate a second intake apparatus side and a vehicle interior side and configured to vibrate according to an intake pulsation so as to transmit a suction noise of the internal combustion engine to the vehicle interior.

First claim

What is claimed is:

1 . A vehicular suction noise transmission device that transmits a suction noise of an internal combustion engine mounted in a vehicular engine compartment to a vehicle interior, the vehicular suction noise transmission device comprising:
a first intake system and a second intake system that are connected to the internal combustion engine; a fuel recirculation system, a first end of which is connected to the internal combustion engine or a fuel tank and a second end of which is connected to the first intake system; and a sound creator system including a first end that is connected to the second intake system, a second end that is in communication with the vehicle interior, and a sound creator that is provided so as to separate a second intake system side and a vehicle interior side from each other and that vibrates due to an intake pulsation.

2 . The vehicular suction noise transmission device according to claim 1 , wherein
the first and second intake systems each include, in order from an upstream side, a supercharger, an intercooler, a throttle valve, and an intake manifold, the first and second intake systems being in communication with each other through the intake manifold of the first intake system and the intake manifold of the second intake system, and the first end of the sound creator system is connected between the intercooler and the throttle valve of the second intake system.

3 . The vehicular suction noise transmission device according to claim 2 , further comprising
a control valve that limits a passage area according to an engine speed, the control valve being provided in the sound creator system and on the second intake system side with respect to the sound creator.

4 . The vehicular suction noise transmission device according to claim 3 , wherein
in a case in which the sound creator is damaged, an opening degree of the control valve is set at a value that is smaller than a value that causes a backflow of air from the first intake system to occur in the sound creator system through each intake manifold.

5 . The vehicular suction noise transmission device according to claim 4 , wherein
in the sound creator system, a distance from the first end of the sound creator system to the sound creator is longer than a longest distance a backflow created by a single pulse of the second intake system can reach while flowing back in the sound creator system from the first end of the sound creator system.

6 . A vehicular suction noise transmission system comprising:
a first intake apparatus connected to an internal combustion engine mounted in a vehicular engine compartment; a second intake apparatus connected to the internal combustion engine; a fuel recirculation apparatus comprising:
a first fuel recirculation end connected to the internal combustion engine or a fuel tank; and
a second fuel recirculation end connected to the first intake apparatus; and
a sound creator apparatus comprising:
a first sound creator end connected to the second intake apparatus;
a second sound creator end in communication with a vehicle interior; and
a sound creator provided to separate a second intake apparatus side and a vehicle interior side and configured to vibrate according to an intake pulsation so as to transmit a suction noise of the internal combustion engine to the vehicle interior.

7 . The vehicular suction noise transmission system according to claim 6 , wherein
the first and second intake apparatuses each include, in order from an upstream side, a supercharger, an intercooler, a throttle valve, and an intake manifold, the first and second intake apparatuses being in communication with each other through the intake manifold of the first intake apparatus and the intake manifold of the second intake apparatus, and the first sound creator end is connected between the intercooler and the throttle valve of the second intake apparatus.

8 . The vehicular suction noise transmission system according to claim 7 , further comprising:
a control valve to limit a passage area according to an engine speed, the control valve being provided in the sound creator apparatus and on the second intake apparatus side with respect to the sound creator.

9 . The vehicular suction noise transmission system according to claim 8 , wherein
in a case in which the sound creator is damaged, an opening degree of the control valve is set at a value smaller than a value that causes a backflow of air from the first intake apparatus to occur in the sound creator apparatus through each intake manifold.

10 . The vehicular suction noise transmission system according to claim 9 , wherein
in the sound creator apparatus, a distance from the first sound creator end to the sound creator is longer than a longest distance a backflow created by a single pulse of the second intake apparatus reaches while flowing back in the sound creator apparatus from the first sound creator end.

11 . The vehicular suction noise transmission system according to claim 6 , wherein
the sound creator is provided between the first sound creator end and the second sound creator end.

12 . The vehicular suction noise transmission system according to claim 6 , wherein
the fuel recirculation apparatus comprises a blowby gas recirculation apparatus which has a first end connected to the internal combustion engine and has a second end connected to the first intake apparatus in order to recirculate a blowby gas that has been generated inside a crankcase of the internal combustion engine to the first intake apparatus, or the fuel recirculation apparatus comprises a fuel-evaporative-emission discharge prevention apparatus which has a first end connected to the fuel tank and has a second end connected to the first intake apparatus in order to prevent evaporative emission inside the fuel tank from being released to an atmosphere.

Assignees

• Honda Motor Co Ltd

Inventors

• Nakashima Hiroaki
• Shinkai Takahiro
• Kakinuma Takashi

Classifications

• F02M35/1294 Primary

  Amplifying, modulating, tuning or transmitting sound, e.g. directing sound to the passenger cabin; Sound modulation · CPC title

• G10K11/22

  for conducting sound through hollow pipes, e.g. speaking tubes · CPC title

• F02M25/08 Primary

  adding fuel vapours drawn from engine fuel reservoir {(electrical control of purge system F02D41/003)} · CPC title

• F02M37/0047

  Layout or arrangement of systems for feeding fuel (fuel injection apparatus characterised by their conduits and venting means F02M55/00; fuel injection apparatus having a common rail F02M63/0225; arrangement of fuel conduits of low pressure fuel injection apparatus F02M69/462) · CPC title

• F02M26/04

  with a single turbocharger · CPC title