Exhaust structure of vehicle

Patent metadata

Field	Value
Publication number	US-10988019-B2
Application number	US-201916503040-A
Country	US
Kind code	B2
Filing date	Jul 3, 2019
Priority date	Jul 27, 2018
Publication date	Apr 27, 2021
Grant date	Apr 27, 2021

Abstract

An exhaust structure of a vehicle is provided that can ensure an arrangement space for a mounted component below a floor panel and prevent thermal damage to the mounted component by reducing sizes of an engine and an exhaust silencer. An exhaust structure of a vehicle includes: an engine disposed in an engine bay formed in a front part of a vehicle; a silencer that reduces noise of exhaust gas from the engine and discharges the exhaust gas outside; an exhaust pipe that couples the engine and the silencer; and a battery unit disposed behind the engine and below a floor panel, the silencer being disposed between the engine and the battery unit.

First claim

What is claimed is:

1. An exhaust structure of a vehicle comprising:
an engine disposed in an engine bay formed in a front part of the vehicle;
an exhaust silencer that reduces noise of exhaust gas from the engine and discharges the exhaust gas outside;
an exhaust pipe that couples the engine and the exhaust silencer; and
a mounted component disposed behind the engine and below a floor panel, wherein the exhaust silencer is disposed between the engine and the mounted component,
a drive motor that drives wheels and a generator driven by the engine are provided in the engine bay,
the wheels are driven only by the drive motor, and
the mounted component is a battery that can store power supplied from the generator and supply the stored power to the drive motor.

2. The exhaust structure of the vehicle according to claim 1 , wherein the engine is operated under a preset specific operating condition.

3. The exhaust structure of the vehicle according to claim 1 , wherein a heat shield wall is provided between the exhaust silencer and the mounted component.

4. The exhaust structure of the vehicle according to claim 3 , wherein a width of the heat shield wall in a vehicle width direction is equal to or larger than a width of the mounted component in the vehicle width direction.

5. The exhaust structure of the vehicle according to claim 1 , wherein
the exhaust silencer is disposed in a middle position in a vehicle width direction and includes a tail pipe, and
the tail pipe extends to a vicinity of one end in the vehicle width direction, and an outlet of the tail pipe is provided at the vicinity of the one end in the vehicle width direction.

6. The exhaust structure of the vehicle according to claim 5 , wherein
a heat shield wall is provided between the exhaust silencer and the mounted component, and
lower ends of the exhaust silencer and the tail pipe are disposed above a lower end of the heat shield wall.

7. An exhaust structure of a vehicle comprising:
an engine disposed in an engine bay formed in a front part of the vehicle;
an exhaust silencer that reduces noise of exhaust gas from the engine and discharges the exhaust gas outside;
an exhaust pipe that couples the engine and the exhaust silencer; and
a mounted component disposed behind the engine and below a floor panel, wherein
the exhaust silencer is disposed between the engine and the mounted component, and
a heat shield wall is provided between the exhaust silencer and the mounted component.

8. The exhaust structure of the vehicle according to claim 7 , wherein a width of the heat shield wall in a vehicle width direction is equal to or larger than a width of the mounted component in the vehicle width direction.

9. The exhaust structure of the vehicle according to claim 7 , wherein
the exhaust silencer is disposed in a middle position in a vehicle width direction and includes a tail pipe, and
the tail pipe extends to a vicinity of one end in the vehicle width direction, and an outlet of the tail pipe is provided at the vicinity of the one end in the vehicle width direction.

10. The exhaust structure of the vehicle according to claim 9 , wherein
lower ends of the exhaust silencer and the tail pipe are disposed above a lower end of the heat shield wall.

11. An exhaust structure of a vehicle comprising:
an engine disposed in an engine bay formed in a front part of the vehicle;
an exhaust silencer that reduces noise of exhaust gas from the engine and discharges the exhaust gas outside;
an exhaust pipe that couples the engine and the exhaust silencer; and
a mounted component disposed behind the engine and below a floor panel, wherein
the exhaust silencer is disposed between the engine and the mounted component,
the exhaust silencer is disposed in a middle position in a vehicle width direction and includes a tail pipe,
the tail pipe extends to a vicinity of one end in the vehicle width direction, and an outlet of the tail pipe is provided at the vicinity of the one end in the vehicle width direction,
a heat shield wall is provided between the exhaust silencer and the mounted component, and
lower ends of the exhaust silencer and the tail pipe are disposed above a lower end of the heat shield wall.

Assignees

• Mazda Motor

Inventors

• Kamo Toshiaki
• Hasegawa Hirokazu
• Ito Takahiro
• Morimoto Shohei

Classifications

• B60K13/04 Primary

  concerning exhaust · CPC title

• B60L50/61

  by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles · CPC title

• F01N13/1805

  Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body (pipe joints in general F16L; fixing auxiliaries in motor vehicles in general B60K) · CPC title

• F01N13/009 Primary

  having two or more separate purifying devices arranged in series · CPC title

• F01N2340/04

  Arrangement of the exhaust system relative to a vehicle or parts thereof · CPC title