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Title:
EXHAUST-GAS DISCHARGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/155422
Kind Code:
A1
Abstract:
The invention relates to a device for discharging the exhaust gases, intended for discharging exhaust gases and for attenuating the noise produced by the discharge systems of the internal combustion engines. The device for discharging the exhaust gases claimed by the invention, intended for discharging exhaust gases and for attenuating the noise produced by the discharge systems of the internal combustion engines, provided, at one end, with a flange for coupling to the exhaust conduit of an internal combustion engine and at the other end with a discharge flaring, alongside of it being provided some circular discharge orifices (c), protected by some circular protection shields (d and e), on the axis of the circular orifices (c) there being provided some circular damping filters (f), the circular shields (d and e) and the circular damping filters (f) having the shape of spherical domes.

Inventors:
BADILA, Dumitru (Aleea Ilia nr.1, Bl.58A Ap.70,Sector 2, Bucharest, RO)
MANEA, Dragos-Costin (Bd. Unirii nr.59, Bl.B1 Et.2, Ap.39,Focsani, Vrancea, RO)
Application Number:
RO2017/000003
Publication Date:
September 14, 2017
Filing Date:
March 07, 2017
Export Citation:
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Assignee:
BADILA, Dumitru (Aleea Ilia nr.1, Bl.58A Ap.70,Sector 2, Bucharest, RO)
MANEA, Dragos-Costin (Bd. Unirii nr.59, Bl.B1 Et.2, Ap.39,Focsani, Vrancea, RO)
International Classes:
F01N1/00; F01N1/08; F01N13/08; F01N13/20
Foreign References:
CH397331A1965-08-15
FR500509A1920-03-16
CN201367931Y2009-12-23
US4209076A1980-06-24
US20110016857A12011-01-27
CN201367931Y2009-12-23
Other References:
BERTHOLD GRÜNWALD: "Teoria, calculul ?i constructia motoarelor pentru autovehicule rutiere", 1980, EDP, pages: 629 - 630
Attorney, Agent or Firm:
FIERASCU, Cosmina (ROMINVENT S.A, 35 Ermil Pangratti Stree, Sector 1 2 Bucharest, 01188, RO)
Download PDF:
Claims:
CLAIMS

1. Device for discharging the exhaust gases, intended to attenuate the noise caused by the discharge systems of the internal combustion engines, which has a central pipe for discharging the flue gases of an internal combustion engine, said pipe being provided, at one end, with a flange for coupling to the discharge pipe of the internal combustion engine and at the other end with a discharge flaring, characterized in that the central pipe (1 ) for discharging the flue gases of the internal combustion engine, has along its length, some circular discharge orifices (c), provided with some circular protection shields (d and e), on the axis of the circular orifices (c) there being provided some circular damping filters (f).

2. Device for discharging the exhaust gases, as claimed by claim 1 , characterized in that the circular shields (d and e) as well as the circular damping filters (f) have the shape of spherical domes.

3. Device for discharging the exhaust gases, intended to attenuate the noise caused by the discharge systems of the internal combustion engines, which has a central pipe for discharging the flue gases of an internal combustion engine, said pipe being provided, at one end, with a flange for coupling to the discharge pipe of the internal combustion engine and at the other end with a discharge flaring, alongside of the discharge pipe being provided some protection shields, between which there are placed some circular damping filters, said circular shields as well as said circular damping filters having the shape of spherical domes, characterized in that the circular damping filters (f), are tangentially placed to the circular shields (d), and tangentially to the circular shields (e) or on the center of the circular, equidistant slots (g, h and i).

AMENDED CLAIMS

received by the International Bureau on 17 July 2017 (17.07.2017)

Claims

[Claim 1] A device for discharging exhaust gas comprising a central pipe (1) for discharging exhaust gas, said pipe (1) being provided at one end with a flange (a) and at the other end with a discharge flaring (b) and having along its length at least one circular discharge orifice (c, g, h, i), and on the exterior surface of said pipe (1) at least one circular protection shield (d, e) and at least one filter (f) having a convex surface and a concave surface

characterized in that

the at least one filter (f) convex surface is tangentially placed to a contact surface between said at least one circular protection shield (d, e) and said circular discharge orifice (c, g, h, i) in a plane perpendicular on the axis of the central pipe (1) and the concave surface being oriented towards the discharge flaring (b)

or

the at least one filter (f) concave and convex surface is tangentially placed onto the axis of the at least one circular discharge orifice (g, h, i) in a plane perpendicular on the axis of the central pipe (1) and the concave surface being oriented towards the discharge flaring (b).

[Claim 2] A device for discharging exhaust gas according to claim 1 wherein the at least one circular protection shield (d, e) and the at least one filter (f) have the shape of spherical domes.

Description:
EXHAUST-GAS DISCHARGING DEVICE

The invention relates to a device for discharging the exhaust gases, meant for discharging exhaust gases and for attenuating the noise caused by the discharge systems of the internal combustion engines.

A device for discharging the exhaust gases is known, presented in the utility model CN201367931 Y, which has an outer housing which forms a resonance chamber, within which there are provided a perforated pipe, as well as some compression and sound insulation plates between which some resonance chambers and expansion chambers are formed.

There is also known a device for discharging the exhaust gases, presented in the paper "Theory, calculation and construction of the engines for road motor vehicles", Berthold Grunwald, EDP, Bucuresti, 1980, pages 629-630, which is provided with a housing wherein there are provided some filters, arranged in parallel, having the shape of spherical domes.

The device for discharging the exhaust gases, as claimed by the invention, has a central pipe for discharging the flue gases of an internal combustion engine, said pipe being provided, at one end, with a flange for coupling to the discharge conduit of the internal combustion engine, and at the other end with a discharge flaring along which there are provided some circular discharge orifices which have, on either sides, some circular protection shields, on the circular orifices axis there being provided some circular damping filters, the circular shields as well as the circular damping filters having the shape of spherical domes.

The device for discharging the exhaust gases, as claimed by the invention, has the following advantages:

- simple construction;

- reduction of the polluting emissions;

- increased engine power and substantially reducing the noise generated by the exhaust gases. There is given hereinafter an embodiment of the invention, in connection also with Figs.1 and 2 which represent:

Fig. 1 , a longitudinal section through the device for discharging the exhaust gases;

Fig. 2, a cross-section through the device for discharging the exhaust gases, with a plane A-A, presented in Fig. 1.

Fig. 3, a longitudinal section through the device for discharging the exhaust gases, in a second embodiment of the invention;

Fig. 4, a longitudinal section through the device for discharging the exhaust gases, in a third embodiment of the invention;

Fig. 5, a longitudinal section through the device for discharging the exhaust gases, in a fourth embodiment of the invention;

Fig. 6, a cross-section through the device for discharging the exhaust gases, with a plane B-B, presented in Fig. 3.

The device for discharging the exhaust gases, as claimed by the invention, is provided with a central pipe 1 for discharging the flue gases of an internal combustion engine, not represented in the drawing, which is coupled in a manner known per se, such as, for example, some clamps and screws, to a discharge pipe of the internal combustion engine, also not represented in the drawing.

The central pipe 1 for discharging the flue gases is provided, at one end with a flange a for coupling to the discharge pipe of an internal combustion engine, and at the other end with a discharge flaring b. Alongside of the central discharge pipe 1 there are provided some discharge orifices c.

On both sides of the discharge orifices c are provided some protection shields d and e.

On the central pipe 1 for discharging the flue gases, on the axis of the circular orifices c there are provided some circular damping filters f having the role to dissipate the acoustic energy as heat by the internal friction of the flue gas layers, as well as by the friction with the walls thereof. The circular shields d and e as well as the circular damping filters f are in the shape of spherical domes.

In a second embodiment of the invention, on the central pipe 1 , between the circular shields d and e, there are provided some circular, equidistant slots g, h and i.

The circular damping filters f, are tangentially placed to the circular shields d.

In a third embodiment of the invention the circular damping filters f are tangentially placed to the circular shields e.

In a fourth embodiment of the invention, the circular damping filters f are placed on the center of the circular, equidistant slots g, h and i.