US4450681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon particulates cleaning device for diesel engine
Assignee: Soken Inc
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Filing: 1983-08-22
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Granted: 1984-05-29
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Expires: 2003-08-22
Abstract
Abstract A carbon particulates cleaning device comprises a carbon particulates catching means, a fuel injecting means, a fuel retaining means for retaining the fuel injected by the fuel injecting means near the carbon particulates catching means, a fuel igniting means for igniting the fuel retained by the fuel retaining means, and a gas blowing means which blows gas for maintaining the fuel burning and applying the heat of the burning fuel into the carbon particulates caught by the carbon particulates catching means. The carbon particulates caught by the carbon particulates catching means are effectively burnt and eliminated by supplying gas which is heated due to the burning heat of the fuel ignited by the fuel igniting means.
Inventors
- 👤 Susumu Sato
- 👤 Yukihisa Takeuchi
- 👤 Masahiro Tomita
- 👤 Shigeru Kamiya
- 👤 Shigeru Takagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:01
CPC Classifications
F; F01; F01N; F01N9/00; F01N9/002; F01N3/00; F01N3/02; F01N3/021; F01N3/023; F01N3/025; F01N3/031; F01N3/032; F01N2390/00; F01N2390/02; F01N2410/00; F01N2410/04; F02; F02B; F02B3/00; F02B3/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/40
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
360 words
A carbon particulates cleaning device for catching and cleaning carbon particulates contained within an exhaust gas discharged from a diesel engine of an automobile or the like through an exhaust gas passage, comprising: a carbon particulates catching means which is disposed within said exhaust gas passage for catching said carbon particulates contained within said exhaust gas; a carbon particulates volume detecting means for detecting the volume of carbon particulates caught by said carbon particulates catching means and generating an electrical signal when the volume of carbon particulates reaches a predetermined volume; a fuel injecting means for injecting fuel near said carbon particulates catching means for a predetermined period of time; a fuel retaining means which is provided near said carbon particulates catching means for retaining the fuel injected by said fuel injecting means; a fuel igniting means which is provided near said fuel retaining means for igniting the fuel retained by said fuel retaining means; a fuel ignition detecting means which is provided near said fuel retaining means for detecting that the fuel retained by said fuel retaining means is ignited by said fuel igniting means and generating an electrical signal while the fuel retained by said fuel retaining means burns; a gas blowing means which is provided near said fuel retaining means for blowing gas containing oxygen into the fuel ignited by said fuel igniting means in order to maintain the burning of said fuel after the operation of said fuel igniting means is finished and applying burning heat of the ignited fuel to said carbon particulates caught by said carbon particulates catching means; and a control means which is electrically connected to said carbon particulates volume detecting means, said fuel ignition detecting means, said fuel injecting means, said fuel igniting means and said gas blowing means; said control means being constructed so as to start the operation of said fuel injecting means and said fuel igniting means upon receiving said electrical signal from said carbon particulates volume detecting means, and stop the operation of said fuel igniting means while starting the operation of said gas blowing means upon receiving said electrical signal from said fuel ignition detecting means.
Claim 2
Dependent Claim
360 words
A carbon particulates cleaning device for catching and cleaning carbon particulates contained within an exhaust gas discharged from a diesel engine of an automobile or the like through an exhaust gas passage, comprising: a carbon particulates catching means which is disposed within said exhaust gas passage for catching said carbon particulates contained within said exhaust gas; a carbon particulates volume detecting means for detecting the volume of carbon particulates caught by said carbon particulates catching means and generating an electrical signal when the volume of carbon particulates reaches a predetermined volume; a fuel injecting means for injecting fuel near said carbon particulates catching means for a predetermined period of time; a fuel retaining means which is provided near said carbon particulates catching means for retaining the fuel injected by said fuel injecting means; a fuel igniting means which is provided near said fuel retaining means for igniting the fuel retained by said fuel retaining means; a fuel ignition detecting means which is provided near said fuel retaining means for detecting that the fuel retained by said fuel retaining means is ignited by said fuel igniting means and generating an electrical signal while the fuel retained by said fuel retaining means burns; a gas blowing means which is provided near said fuel retaining means for blowing gas containing oxygen into the fuel ignited by said fuel igniting means in order to maintain the burning of said fuel after the operation of said fuel igniting means is finished and applying burning heat of the ignited fuel to said carbon particulates caught by said carbon particulates catching means; and a control means which is electrically connected to said carbon particulates volume detecting means, said fuel ignition detecting means, said fuel injecting means, said fuel igniting means and said gas blowing means; said control means being constructed so as to start the operation of said fuel injecting means and said fuel igniting means upon receiving said electrical signal from said carbon particulates volume detecting means, and stop the operation of said fuel igniting means while starting the operation of said gas blowing means upon receiving said electrical signal from said fuel ignition detecting means.
Claim 3
Dependent Claim
39 words
A carbon particulates cleaning device according to claim 1, wherein: said carbon particulates catching means comprises: a case provided in said exhaust gas passage; and a filter member made of heat resistant material, which is accommodated within said case.
Claim 4
Dependent Claim
89 words
A carbon particulates cleaning device according to claim 2, wherein: said gas blowing means comprises: a gas blowing pipe, one end of which is communicated with said case, and the other end of which is communicated with the air; an air pump which is provided within said gas blowing pipe; a valve means which is provided within said gas blowing pipe on the downstream side of said air pump; and a valve operating means which is electrically connected to said control means for opening and closing said valve means.
Claim 5
Dependent Claim
71 words
A carbon particulates cleaning device according to claim 2, wherein: said gas blowing means comprises: a gas blowing pipe, one end of which is communicated with said case and the other end of which is communicated with said exhaust passage; a valve means which is provided within said gas blowing pipe; and a valve operating means which is electrically connected to said control means for opening and closing said valve means.
Claim 6
Dependent Claim
34 words
A carbon particulates cleaning device according to claim 4, wherein: said gas blowing means further comprises: a blower which is electrically connected to said control means to operate when said valve means is opened.
Claim 7
Dependent Claim
29 words
A carbon particulates cleaning device according to claim 3, wherein: said fuel retaining means comprises: a fuel vessel formed within said gas blowing pipe so as to open thereinto.
Claim 8
Dependent Claim
41 words
A carbon particulates cleaning device according to claim 6, wherein: said fuel retaining means further comprises: a porous heat resistant retaining member which is provided within said fuel vessel to be impregnated with said fuel injected by said fuel injecting means.
Claim 9
Dependent Claim
69 words
A carbon particulates cleaning device according to claim 1, wherein: said fuel injecting means comprises: a fuel supplying pipe communicated with a fuel source; a nozzle member which is communicated with said fuel supplying pipe to inject said fuel into said fuel retaining means; and a valve means which is electrically connected to said control means to open and close said fuel supplying pipe, operated by said control means.
Claim 10
Dependent Claim
27 words
A carbon particulates cleaning device according to claim 1, wherein: said fuel igniting means comprises: a resistance wire heater which is electrically connected to said control means.
Claim 11
Dependent Claim
32 words
A carbon particulates cleaning device according to claim 1, wherein: said fuel ignition detecting means comprises: a thermocouple which detects the burning temperature of the fuel ignited by said fuel igniting means.
Claim 12
Dependent Claim
85 words
A carbon particulates cleaning device according to claim 1, wherein: said exhaust gas passage is diverged into two branch passages; said carbon particulates catching means is provided in at least one of said two branch passages; and a valve means is provided in the diverging portion of said two branch passages for selectively opening and closing said two branch passages so that said exhaust gas is not supplied into said carbon particulates catching means when said fuel igniting means and said gas blowing means operate.
Claim 13
Dependent Claim
27 words
A carbon particulates cleaning device according to claim 2, wherein: said filter member is made of foamed ceramic, metallic wire mesh or ceramic coated metallic wire mesh.
Claim 14
Dependent Claim
36 words
A carbon particulates cleaning device according to claim 1, wherein: said carbon particulates volume detecting means is a fuel consumption detector which indirectly detects the volume of carbon particulates caught by said carbon particulates catching means.
References Cited (Backward Citations)
US1800726A
Cited
US2307007A
Cited
US2946651A
Cited
US3199505A
Cited
US3203168A
Cited
US3503716A
Cited
US3724220A
Cited
US3779015A
Cited
US3849055A
Cited
US4054418A
Cited
US4167852A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-29 | 1987-11-28 | 1988-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-29 | 1991-11-28 | 1992-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-29 | 1995-11-28 | 1996-05-29 | $7700.00 | Window Closed / Lapsed |