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Exhaust apparatus of vehicles

An exhaust device and vehicle technology, which is applied in the directions of exhaust device, muffler device, and air quality improvement, can solve the problem of increasing the size of the muffler, and achieve the effect of suppressing the increase in size.

Inactive Publication Date: 2006-07-05
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the above-mentioned conventional exhaust system, if a catalyst is provided in the muffler to purify the exhaust gas, problems such as the size of the muffler due to the arrangement arise.

Method used

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  • Exhaust apparatus of vehicles
  • Exhaust apparatus of vehicles
  • Exhaust apparatus of vehicles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] exist figure 1 Among them, 1 is a motorcycle (vehicle), and this motorcycle 1 is constituted by covering the front part of a stamped frame 7 with a cover 2 . A front fork 5 supporting a front wheel 4 is supported on the head pipe 3 at the front of the stamped frame.

[0037] In addition, an engine 6 is installed in the middle lower part of the shield 2, and a fuel tank (not shown) is provided inside the rear of the shield 2. The above-mentioned stamped vehicle frame 7 is continuous in appearance, and a seat 8 is extended on it. . A rear fork 10 for supporting the rear wheel 9 is freely swingably supported at the bottom of the stamped vehicle frame 7, and a rear buffer device 11 is provided between the rear fork 10 and the rear portion of the vehicle frame. On the top of the steering shaft extending toward the head pipe 3, a handlebar 12 is attached. At the center of the handlebar 12, a headlight device 13 is attached.

[0038] On the left and right sides of the front...

Embodiment 2

[0065] Figure 7 and Figure 8 Example 2 is shown.

[0066] In this example, as Figure 7 As shown, the curved portion 231 constitutes a part of the exhaust pipe 23, and is located directly below the engine 6, and in order to be accommodated within the width of the engine 6, there is also an upstream side catalytic converter whose axis extends in the front-rear direction of the vehicle. The exhaust cleaner 233, the downstream catalytic converter 235 with the same axis extending in the vehicle front-rear direction, and the curved pipe 237 connecting the exhaust cleaners 233, 235 in series are U-shaped in plan view. In this case, as Figure 8 As shown, each catalytic exhaust gas purifier 233, 235 can be substantially horizontal to its axis, and is arranged in a transverse direction directly under the engine 6, and the upstream side catalytic exhaust gas purifier 233 is located at a higher position than the downstream side catalytic exhaust gas purifier 233. 235 is still slig...

Embodiment 3

[0073] In addition, this invention is not limited to the said structure, The following deformation|transformation can be implemented.

[0074] Figure 9 A diagram showing an exhaust device of a vehicle according to Example 3.

[0075] In Embodiment 3, right below the engine 6, the curved portion 331 is provided with: an upstream side catalytic exhaust gas purifier 333, a downstream side catalytic exhaust gas purifier 335, and each exhaust gas purifier is connected in series and connected from the The U-shaped curved pipe 337 is viewed from above. In this configuration, the upstream catalytic converter 333 and the downstream catalytic converter 335 are integrated to form the composite catalytic converter 36 . The composite catalytic exhaust gas converter 36 is externally composed of an exhaust gas purification part 36c and connection parts 36j provided at both ends thereof. The exhaust purification part 36c is a part functioning as a catalyst, and the connecting part 36j is ...

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Abstract

To provide an exhaust device for a vehicle capable of promoting catalyst activation in a cold state without enlarging a muffler connected to an exhaust pipe. In the exhaust device for the vehicle, the muffler 25 is connected to the exhaust pipe 23 extending from an engine 6, and a plurality of catalysts are provided. A bent part 31 having an upstream side catalyst converter 33, a downstream side catalyst converter 35, and a bent pipe 37 connecting the respective catalyst converters 33 and 35 in series is formed in a part of the exhaust pipe 23 positioned near the engine 6 and extending to the muffler 25.

Description

technical field [0001] The invention relates to the exhaust system of a vehicle equipped with a catalytic converter. Background technique [0002] In general, an exhaust system for a vehicle in which a catalyst is arranged in an exhaust pipe extending from an engine and a muffler connected thereto is widely known (for example, refer to Patent Document 1). In such a vehicle exhaust system, it has been proposed to introduce the rear portion of the exhaust pipe into the inside of the muffler, and to increase the diameter of the rear portion of the exhaust pipe toward the rear in order to improve the performance of the engine. [0003] Patent Document 1: Japanese Unexamined Patent Publication No. 6-10659 [0004] However, in the conventional exhaust system described above, if a catalyst is provided in the muffler to purify the exhaust gas, problems such as an increase in the size of the muffler due to the arrangement arise. [0005] In addition, in a device in which a catalyst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/24
CPCY02A50/20
Inventor 高田康弘宫田博明大久保克纪岛田信弘
Owner HONDA MOTOR CO LTD
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