Pleated filter in the exhaust manifold

• US 3,937,015 A
• Filed: 04/30/1974
• Issued: 02/10/1976
• Est. Priority Date: 05/03/1973
• Status: Expired due to Term

• Current Assignee: Nippondenso Co., Ltd. (DENSO Corporation)
• Original Assignee: Nippondenso Co., Ltd. (DENSO Corporation)
• Inventors: Matsuura, Hideki, Kawashima, Yutaka, Yamaguchi, Akihide, Akado, Hajime
• Primary Examiner(s): Croyle, Carlton R.
• Assistant Examiner(s): Ross, Thomas I.
• Application Number:
  US05/465,625
• Time in Patent Office: 651 Days
• Field of Search: 60/311, 60/302, 60/297, 60/299, 60/278, 60/288, 60/294, 23/288 FC, 55/498
• US Class Current: 60/288
• CPC Class Codes: F01N 13/14 having thermal insulation exhaust manifolds F01N13/102
• CPC Class Codes: F01N 2240/20 a flow director or deflector
• CPC Class Codes: F01N 2330/06 Ceramic, e.g. monoliths
• CPC Class Codes: F01N 2330/12 Metallic wire mesh fabric or knitting
• CPC Class Codes: F01N 2390/02 using electric components only
• CPC Class Codes: F01N 2410/06 at cold starting
• CPC Class Codes: F01N 2470/16 Plurality of inlet tubes, e.g. discharging into different chambers
• CPC Class Codes: F01N 2470/18 the axis of inlet or outlet tubes being other than the longitudinal axis of apparatus
• CPC Class Codes: F01N 3/021 by means of filters
• CPC Class Codes: F01N 3/0211 Arrangements for mounting filtering elements in housing, e.g. with means for compensating thermal expansion or vibration
• CPC Class Codes: F01N 3/0217 the filtering elements having the form of hollow cylindrical bodies
• CPC Class Codes: F01N 3/022 characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
• CPC Class Codes: F01N 3/023 using means for regenerating the filters, e.g. by burning trapped particles by electrically controlling the supply of combustible mixture or its constituents only F02D41/0235
• CPC Class Codes: F01N 3/031 having means for by-passing filters, e.g. when clogged or during cold engine start
• CPC Class Codes: F02B 1/04 with fuel-air mixture admission into cylinder
• CPC Class Codes: F02D 41/0065 Specific aspects of external EGR control constructional details of EGR system F02M26/00
• CPC Class Codes: F02M 26/15 in relation to engine exhaust purifying apparatus
• CPC Class Codes: F02M 26/27 with air-cooled heat exchangers
• CPC Class Codes: F02M 26/32 Liquid-cooled heat exchangers

Abstract

This specification discloses an exhaust gas cleaning device which is intended for removing harmful substances from exhaust gases of internal combustion engine, especially for removing carbon particles or the like.

The device has a body accomodating a filter element adapted to catch the particles in the exhaust gases. The device is attached to the engine as if it were an exhaust manifold so that the clogging particles are conveniently burned by hot gases, whereby the filter element is conveniently recovered.

Claims

1. An exhaust gas cleaning device for an internal combustion engine, comprising a casing adapted to be directly attached to the engine and having inlet ports corresponding in number to the number of cylinders of the engine from which exhaust gas is coupled to said device, said device including at least two outlets, said inlet ports each being adapted to be directly connected to a corresponding exhaust port of said cylinder;

a tubular filtering element disposed in said casing to divide the space within said casing into two spaces, said filtering element being pleated circumferentially, one of said two spaces being communicated with one of said two outlets and with said inlet ports, the other of said two spaces being communicated with the other of said two outlets and being communicated through said filtering element with said one of the two spaces; and

means connected to said one of the two outlets for controlling the amount of gas passing through said one of the two outlets.

2. An exhaust gas cleaning device as claimed in claim 1, wherein said controlling means is operative in response to the temperature of the exhaust gas from the engine.

3. An exhaust gas cleaning device as claimed in claim 1, wherein said controlling means is operative in response to the load condition of the engine.

4. An exhaust gas cleaning device as claimed in claim 1, wherein said one of the two spaces includes the space surrounded by the inner periphery of said filtering element.

5. An exhaust gas cleaning device as claimed in claim 1, wherein said the other of the two spaces includes the space surrounded by the inner periphery of said filtering element.