Electric heating type catalyst

Abstract

To provide an electric heating type catalyst which can secure reliability of heat resistance of a cable and a terminal.SOLUTION: An electric heating type catalyst is mounted on a vehicle and includes: a cable for supplying electric power; and a terminal with which the cable is connected. The cable and the terminal are located at positions to which wind from the vehicle front blows.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to electrically heated catalysts. [Background technology]

[0002] Patent Document 1 discloses an electrically heated catalyst (EHC) that is provided in an exhaust passage of an engine and has terminals for passing electricity through a catalyst carrier. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-014253 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the technology disclosed in Patent Document 1, a sealing material or an insulating coating may be used for the terminal for passing electricity through the catalyst carrier or the cable connected to the terminal. If such a sealing material or insulating coating is arranged in a location that is easily affected by the temperature rise of exhaust system parts, the cable and terminal may become hot, which may cause a malfunction.

[0005] The present disclosure has been made in consideration of the above, and aims to provide an electrically heated catalyst that can ensure the heat resistance reliability of cables and terminals. [Means for solving the problem]

[0006] The electrically heated catalyst of the present disclosure is an electrically heated catalyst mounted on a vehicle, and is provided with a cable for supplying power and a terminal to which the cable is connected, the cable and the terminal being positioned in a position where they are exposed to wind from the front of the vehicle. Effect of the Invention

[0007] According to the present disclosure, the heat resistance reliability of cables and terminals can be ensured. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing an example of the arrangement of an electrically heated catalyst according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] An electrically heated catalyst according to an embodiment of the present disclosure will be described with reference to the drawings. Note that the components in the following embodiments include those that are easily replaceable by a person skilled in the art, or those that are substantially the same.

[0010] The configuration of an electrically heated catalyst (EHC) according to an embodiment will be described with reference to Fig. 1. The electrically heated catalyst according to an embodiment is an electrically heated exhaust purification device mounted on a vehicle.

[0011] The electrically heated catalyst 1 is disposed in an exhaust passage 21 of an engine 2 of a vehicle. The electrically heated catalyst 1 further includes a metal case 11, a cable 12 for supplying power, and a terminal 13.

[0012] A catalyst carrier is housed in case 11. One end of cable 12 is connected to terminal 13. The other end of cable 12 is connected to a battery (not shown) via a transformer (not shown). One end of cable 12 is connected to terminal 13, and power is supplied to the catalyst carrier inside case 11 through cable 12.

[0013] In the electrically heated catalyst 1 having the above-mentioned configuration, for example, before the engine 2 is started, a predetermined amount of electric power is supplied to the electrically heated catalyst 1. This causes the electrically heated catalyst 1 to be electrically heated and warmed up. Then, after the electrically heated catalyst 1 has been warmed up, the engine 2 is started.

[0014] Here, the above-mentioned cable 12 and terminal 13 may be made of materials that cannot directly withstand the high temperatures of exhaust system components (i.e., materials with relatively low heat resistance), such as a sealing member that prevents water from entering from the outside and an insulating coating to ensure insulation.

[0015] Therefore, in the electrically heated catalyst 1 according to the embodiment, the cable 12 and the terminal 13 are arranged in a position where they are exposed to wind from the front of the vehicle, as shown in Fig. 1. In other words, when the electrically heated catalyst 1 is mounted on a vehicle with a front exhaust layout, the cable 12 and the terminal 13 are arranged in a position where they are likely to be exposed to wind from the front of the vehicle and wind from the cooling fan of the radiator 3. More specifically, it is preferable to arrange the cable 12 and the terminal 13 within an angular range of 90° when the electrically heated catalyst 1 is viewed from the front of the vehicle.

[0016] In the electrically heated catalyst according to the embodiment described above, the cable 12 and the terminal 13 are arranged in a position where they are exposed to wind from the front of the vehicle, and are cooled by being exposed to the wind while the vehicle is traveling, thereby preventing the cable 12 and the terminal 13 from becoming too hot due to the influence of exhaust system components. Therefore, the electrically heated catalyst according to the embodiment can ensure the heat resistance reliability of the cable 12 and the terminal 13.

[0017] Further advantages and modifications may readily occur to those skilled in the art. Thus, the invention in its broader aspects is not limited to the specific details and representative embodiments shown and described above. Accordingly, various modifications may be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and equivalents thereof. [Explanation of symbols]

[0018] 1 Electrically Heated Catalyst (EHC) 11 Cases 12 Cable 13 Terminals 2 Engine 21 Exhaust passage 3. Radiator

Claims

[Claim 1] An electrically heated catalyst mounted on a vehicle, A power supply cable and a terminal to which the cable is connected, The cable and the terminal are disposed in a position where they are exposed to wind from the front of the vehicle. Electrically heated catalyst.

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