IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0525527
(1983-08-22)
|
| 우선권정보 |
JP-0018891 (1980-02-18); JP-0022363 (1980-02-25) |
|
발명자
/ 주소 |
- Sato, Susumu
- Takeuchi, Yukihisa
- Tomita, Masahiro
- Kamiya, Shigeru
- Takagi, Shigeru
|
| 출원인 / 주소 |
|
| 대리인 / 주소 |
|
| 인용정보 |
피인용 횟수 :
47 인용 특허 :
5 |
초록
▼
A carbon particulates cleaning device for use in a diesel engine of an automobile or the like comprises an exhaust gas main pipe, an exhaust gas branch pipe diverged from the exhaust main pipe, a carbon particulates catching member which is provided within at least one of the exhaust gas main pipe a
A carbon particulates cleaning device for use in a diesel engine of an automobile or the like comprises an exhaust gas main pipe, an exhaust gas branch pipe diverged from the exhaust main pipe, a carbon particulates catching member which is provided within at least one of the exhaust gas main pipe and the exhaust gas branch pipe, a valve means by which exhaust gas is selectively supplied into the exhaust gas main pipe or the exhaust gas branch pipe, a heating means which heats the carbon particulates catching member, a gas supplying means which supplies gas into the carbon particulates catching member when the carbon particulates catching member is heated and a control means which controls each operation of the valve means, the heating means and the gas supplying means. When the carbon particulates caught by the carbon particulates catching member reaches a predetermined volume, a control means operates to stop the exhaust gas from flowing into the carbon particulates catching member, the upper stream portion of the carbon particulates catching member is heated over the burning temperature of carbon particulates by the heating means and gas such as air is supplied from the gas supplying means into the carbon particulates catching member to transmit the heat of the upper stream portion of the carbon particulates catching member into the downstream portion thereof. As a result, the carbon particulates catching member is effectively heated by a small amount of heat energy and the carbon particulates caught by the carbon particulates catching member are burnt and eliminated.
대표청구항
▼
1. A carbon particulates cleaning device for cleaning the carbon particulates contained in the exhaust gas discharged from a diesel engine of an automobile or the like, comprising: an exhaust gas passage adpated to be communicated with an exhaust manifold of a diesel engine; said exhaust gas pas
1. A carbon particulates cleaning device for cleaning the carbon particulates contained in the exhaust gas discharged from a diesel engine of an automobile or the like, comprising: an exhaust gas passage adpated to be communicated with an exhaust manifold of a diesel engine; said exhaust gas passage being formed by an exhaust gas main pipe and an exhaust gas branch pipe which is diverged from said exhaust gas main pipe; a carbon particulates catching member which is provided within at least one of said exhaust gas main pipe and said exhaust gas branch pipe; said carbon particulates catching member being composed of a plurality of ceramic foamed bodies which are arranged in the exhaust gas flowing direction so that opposed end surfaces of each ceramic foamed body are closely contacted with each other, the length of the upstream ceramic foamed body being shorter than that of the downstream ceramic foamed body; a valve means which is provided in the portion where said exhaust gas branch pipe is diverged from said exhaust gas main pipe for selectively supplying said exhaust gas into said exhaust gas main pipe or said exhaust gas branch pipe; a heating means which is provided adjacent to the upstream end of said carbon particulates catching member on the upstream side thereof for applying heat to said carbon particulates catching member so as to burn the carbon particulates caught by said carbon particulates catching member; a gas supplying means which is provided in at least one of said exhaust gas main pipe and said exhaust gas branch pipe, adjacent to said heating means on the upstream side thereof for supplying gas into said carbon particulates catching member; a carbon particulates volume detecting means which is provided in at least one of said exhaust gas main pipe and said exhaust gas branch pipe for detecting the volume of the carbon particulates caught by said carbon particulates catching member and which generates electrical signals when the volume of caught carbon particulates reaches a predetermined volume; and a control means which is electrically connected to said carbon particulates volume detecting means, said valve means, said heating means and said gas supplying means for supplying electrical signals to said valve means, said heating means and said gas supplying means upon receiving said electrical signals from said carbon particulates volume detecting means so as to start the operation of said valve means, said heating means and said gas supplying means; whereby when the volume of the carbon particulates caught by said carbon particulates catching member reaches a predetermined volume, said valve means closes said exhaust gas passage leading to said carbon particulates catching member and opens another exhaust gas passage, said heating means applies heat to the upstream end of said carbon particulates catching means for a predetermined time and said gas supplying means supplies gas into said heating means until the carbon particulates caught by said carbon particulates catching member are burnt off. 2. A carbon particulates cleaning device according to claim 1, wherein: said control means controls said gas supplying means and said heating means so that said gas supplying means finishes the operation thereof after said heating means finishes the operation thereof. 3. A carbon particulates cleaning device according to claim 1, wherein: said gas supplying means comprises an air supplying passage, one end of which is communicated with an air source, the other end of which opens into said exhaust gas passage, and a valve means which opens and closes said air supplying passage, upon receiving electrical signals from said control means. 4. A carbon particulates cleaning device according to claim 1, wherein: said gas supplying means comprises an exhaust gas supplying passage, one end of which is communicated with said exhaust manifold, the other end of which opens into said exhaust gas passage near said carbon particulates catching member, and a valve means which opens and closes said exhaust gas supplying passage, upon receiving electrical signals from said control means. 5. A carbon particulates cleaning device according to claim 1, wherein: said heating means comprises a resistance wire heater which is disposed in an end surface of said carbon particulates catching member on the upstream side thereof and is electricaly connected to said control means. 6. A carbon particulates cleaning device according to claim 1, wherein: said heating means comprises a fuel supplying means for supplying oil into said exhaust gas passage, an oil burner from which the mixture of said gas and said oil is injected into said exhaust gas passage and a glow plug for igniting said mixture injected from said oil burner, which is provided in at least one of said exhaust gas main pipe and said exhaust gas branch pipe, near said oil burner. 7. A carbon particulates cleaning device according to claim 1, wherein: said valve means comprises an electromagnetic valve which operates upon receiving electrical signals from said control means. 8. A carbon particulates cleaning device according to claim 1, wherein: said carbon particulates volume detecting means comprises a differential pressure detector which detects pressure defference between the upstream side of said carbon particulates catching member and the downstream side thereof and supplies electrical signal into said control means when said pressure difference reaches a predetermined value. 9. A carbon particulates cleaning device according to claim 1, further comprising: two temperature detecting means provided in the upstream portion of said carbon particulates catching member and in the downstream portion thereof respectively; said temperature detecting means being electrically connected to said control means. 10. A carbon particulates cleaning device according to claim 9, wherein: said temperature detecting means comprises an alumel-chromel thermocouple. 11. A carbon particulates cleaning device according to claim 1, wherein: said exhaust gas passage is formed by a casing which is adpated to be connected to the exhaust manifold; said casing is composed of two pipe portions of which both ends are integrally joined with each other; and one of said two pipe portions forms said exhaust gas main pipe and the other of said two pipe portions forms said exhaust gas branch pipe.
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