Electrically heated 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 an electrically heated catalyst.

Background Art

[0002] Patent Document 1 discloses an electrically heated catalyst (EHC) provided in an exhaust passage of an engine and having a terminal for energizing a catalyst carrier.

Prior Art Document

Patent Document

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the technology disclosed in Patent Document 1, a seal member or an insulating film may be used for a terminal for energizing a catalyst carrier and a cable connected to the terminal. When such a seal member or insulating film is disposed at a location liable to be affected by the temperature rise of exhaust system components, the cable and the terminal may become hot, possibly causing problems.

[0005] The present disclosure has been made in view of the above, and an object thereof is to provide an electrically heated catalyst capable of ensuring the heat resistance reliability of a cable and a terminal.

Means for Solving the Problems

[0006] The electrically heated catalyst according to the present disclosure is an electrically heated catalyst mounted on a vehicle, comprising a cable for power supply and a terminal to which the cable is connected, wherein the cable and the terminal are disposed at a position where wind from the front of the vehicle hits.

Effects of the Invention

[0007] According to this disclosure, the heat resistance reliability of cables and terminals can be ensured. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 shows an example of the arrangement of an electrically heated catalyst according to the embodiment. [Modes for carrying out the invention]

[0009] An electroheated catalyst according to the embodiments of this disclosure will be described with reference to the drawings. Note that the components in the following embodiments include those that are easily substituted or substantially identical to those that are easily substituted by those skilled in the art.

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

[0011] The electrically heated catalyst 1 is located in the exhaust passage 21 of the vehicle's engine 2. The electrically heated catalyst 1 also includes a metal case 11, a power supply cable 12, and terminals 13.

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

[0013] In the electrically heated catalyst 1 having the above configuration, for example, before starting the engine 2, a predetermined amount of power is supplied to the electrically heated catalyst 1. As a result, the electrically heated catalyst 1 is electrically heated and warmed up. Then, after the electrically heated catalyst 1 has warmed up, the engine 2 is started.

[0014] In this case, the cable 12 and terminal 13 may be made of materials that cannot directly withstand the high temperatures of the exhaust system components (i.e., materials with relatively low heat resistance), such as sealing members to prevent water from entering from the outside or insulating coatings to ensure insulation.

[0015] Therefore, in the electrically heated catalyst 1 according to this embodiment, as shown in Figure 1, the cable 12 and terminal 13 are positioned to be exposed to airflow from the front of the vehicle. That is, when the electrically heated catalyst 1 is mounted on a vehicle with a front exhaust layout, the cable 12 and terminal 13 are positioned to be easily exposed to airflow from the front of the vehicle and airflow from the cooling fan of the radiator 3. More specifically, it is preferable to position the cable 12 and terminal 13 within a 90° angle range when viewing the electrically heated catalyst 1 from the front of the vehicle.

[0016] In the electrically heated catalyst according to the embodiment described above, the cable 12 and terminal 13 are positioned where they are exposed to wind from the front of the vehicle, and by applying cooling with the airflow while driving, it is possible to suppress the cable 12 and terminal 13 from becoming hot due to the influence of exhaust system components. Therefore, according to the electrically heated catalyst according to the embodiment, the heat resistance reliability of the cable 12 and terminal 13 can be ensured.

[0017] Further effects and modifications can be readily derived by those skilled in the art. Therefore, broader aspects of the present invention are not limited to the specific details and representative embodiments expressed and described above. Accordingly, various modifications are possible without departing from the spirit or scope of the overall concept of the invention as defined by the appended claims and their equivalents. [Explanation of Symbols]

[0018] 1. Electrically heated catalyst (EHC) 11 cases 12 Cables 13 terminals 2 engines 21 Exhaust passage 3 Radiator

Claims

[Claim 1] An electrically heated catalyst installed in a vehicle, It comprises a power supply cable and a terminal to which the cable is connected, The cable and terminal are positioned where they are exposed to wind from the front of the vehicle, and are located within a 90° angle range when viewed from the front of the vehicle as an electrically heated catalyst. Electrically heated catalyst.

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