Vehicular suction noise transmission system

Patent metadata

Field	Value
Publication number	US-9926896-B2
Application number	US-201615064599-A
Country	US
Kind code	B2
Filing date	Mar 9, 2016
Priority date	Mar 13, 2015
Publication date	Mar 27, 2018
Grant date	Mar 27, 2018

Abstract

A vehicular suction noise transmission system includes a first intake apparatus, a second intake apparatus, a fuel recirculation apparatus, and a suction noise transmission 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 suction noise transmission apparatus includes a first suction noise transmission end, a second suction noise transmission end, and a vibrating body. The first suction noise transmission end is connected to the second intake apparatus. The second suction noise transmission end is in communication with a vehicle interior. The vibrating body 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 suction noise transmission device 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 vibrating body 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 suction noise transmission device 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 suction noise transmission device and on the second intake system side with respect to the vibrating body.

4. The vehicular suction noise transmission device according to claim 3 , wherein
in a case in which the vibrating body 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 suction noise transmission device through each intake manifold.

5. The vehicular suction noise transmission device according to claim 4 , wherein
in the suction noise transmission device, a distance from the first end of the suction noise transmission device to the vibrating body 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 suction noise transmission device from the first end of the suction noise transmission device.

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 suction noise transmission apparatus comprising:
a first suction noise transmission end connected to the second intake apparatus;
a second suction noise transmission end in communication with a vehicle interior; and
a vibrating body 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 suction noise transmission 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 suction noise transmission apparatus and on the second intake apparatus side with respect to the vibrating body.

9. The vehicular suction noise transmission system according to claim 8 , wherein
in a case in which the vibrating body 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 suction noise transmission apparatus through each intake manifold.

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

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