CN2632324Y

CN2632324Y - Bidirectional spiral pulse gas vent

Info

Publication number: CN2632324Y
Application number: CN 03217198
Authority: CN
Inventors: 王守君
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Priority date: 2003-05-16
Filing date: 2003-05-16
Publication date: 2004-08-11
Anticipated expiration: 2013-05-16

Abstract

The utility model relates to a bi-directional spiral pulse exhaust pipe for eight cylinder diesel engine, which divides the exhaust pipe into two sections, an expansion pipe is linked between two sections for the connection of two exhaust pipes, each section is twisted into an integrity, the twisting directions of two exhaust pipes are reverse, one section is in left turning direction and another section is in right turning direction, each exhaust pipe is integrally twisted 90 degrees in axial direction compared to the adjacent former exhaust pipe. A pulse converter is linked at the end of the section exhaust pipe; the flange at the inlet end of the pulse converter is equipped with four through holes which correspond to four common exhaust pipes. The exhaust outlet of the pulse converter is arranged with two exhaust outlets, one exhaust outlet shares the exhaust pipe with the first eight cylinders and shares the exhaust pipe crossover with the second seven cylinders, another exhaust outlet shares the exhaust pipe with third six cylinders and shares the exhaust pipe crossover with fourth five cylinders. The utility model is characterized by compact structure, simple shape, easy integrated design and good appearance quality of the whole machine.

Description

Bidirectional screw pulse outlet pipe

Technical field

The utility model relates to a kind of Diesel Engine Exhaust Pipe, the bidirectional screw pulse outlet pipe of a kind of eight cylinder diesels of more specifically saying so.

Background technique

Along with science and technology development, modern diesel engine all generally adopts supercharging technologies such as constant pressure supercharging, pulse pressure-charging.For marine diesel engine,,, all adopt the pulse pressure-charging technology in order to solve when low speed, the running on the lower load over-emitting black exhaust and the long problem of time of smoldering during in variable working condition because that low speed, running on the lower load and variable working condition are used is frequent.But for eight cylinder marine diesel engine, the design of pulse outlet pipe is then very difficult, method in common is that per two cylinders are provided with an outlet pipe, i.e. each shared outlet pipe of first cylinder and the 8th cylinder, second cylinder and the 7th cylinder, the 3rd cylinder and the 6th cylinder, the 4th cylinder and the 5th cylinder.The outlet pipe of this structural type, its deficiency is: 1, structure is huge, brings difficulty to general arrangement; 2, for avoiding outlet pipe and exhaust branch pipe to interfere, the design of moving towards of exhaust branch pipe is also become complicated, make the appearance and modeling of complete machine of poor quality.

Summary of the invention

The purpose of this utility model provides the bidirectional screw pulse outlet pipe that a kind of compact structure, profile are terse, improve array eight cylinder diesels of complete machine appearance quality.

In order to realize above-mentioned purpose, this bidirectional screw pulse outlet pipe, its structural feature is that outlet pipe is divided into two sections, being connected between two sections has the expansion tube that two sections outlet pipes are communicated with, twist to revolve respectively for every section and fix as one, first section is by the first cylinder exhaust branch pipe and preceding extension thereof, the second cylinder exhaust branch pipe and preceding extension thereof, the 3rd cylinder exhaust branch pipe and preceding extension thereof and the 4th cylinder exhaust branch pipe and preceding extension thereof constitute, second section comprises the four or the five cylinder common exhaust pipe that is made of the back extension of the 4th cylinder exhaust branch pipe and the 5th cylinder exhaust branch pipe that is communicated with this extension, back, the three or the six cylinder common exhaust pipe that constitutes by the back extension of the 3rd cylinder exhaust branch pipe and the 6th cylinder exhaust branch pipe that is communicated with this extension, back, the two or the seven cylinder common exhaust pipe that constitutes by the back extension of the second cylinder exhaust branch pipe and the 7th cylinder exhaust branch pipe that is communicated with this extension, back, the one or the eight cylinder common exhaust pipe that constitutes by the back extension of the first cylinder exhaust branch pipe and the 8th cylinder exhaust branch pipe that is communicated with this extension, back, the stubborn direction of revolving of two sections outlet pipes is opposite, wherein one section is left-handed, another section dextrorotation, and the last outlet pipe integral body that each root outlet pipe axially all faces is mutually reversed 90 ° of angles, end at second section outlet pipe, being connected has pulse converter, the flange of pulse converter exhaust gas intake port end is provided with four through holes of corresponding connection with four common exhaust pipe of second section, and dock with the flange of second section outlet pipe end, the exhaust outlet section of pulse converter is provided with two exhaust outlets, one of them exhaust outlet is communicated with the one or eight cylinder common exhaust pipe and the two or seven cylinder common exhaust pipe, and another exhaust outlet is communicated with the three or six cylinder common exhaust pipe and the four or five cylinder common exhaust pipe.

Above-mentioned expansion tube comprises that one includes the bellows of four exhaust honeycomb ducts, each affixed flange of the two ends of bellows, respectively be provided with four through holes on these two flanges, four exhaust honeycomb ducts are with the preceding extension of exhaust branch pipe and extension connection afterwards, wherein clamp by the locating stud location and by clip between that flange of close first section and first section terminal flange, clamp by another clip near that flange of second section and second section head end flange.

The stubborn direction of revolving of two sections above-mentioned outlet pipes, first section is left-handed, second section is dextrorotation.

When installing and using, the pipe flange of the first cylinder exhaust branch pipe to the, eight cylinder exhaust branch pipes by separately is installed on the cylinder head exhaust outlet flange of corresponding cylinder.

Adopt bidirectional screw pulse outlet pipe of the present utility model,, thereby prevented the drawback that air inlet, exhaust interfere with each other effectively because the exhaust of two pairing two cylinders of exhaust branch pipe that are communicated with same common exhaust pipe is spaced apart 360 ° of angles; Pulse converter is become two exhaust outlets of exhaust outlet section by four common exhaust pipe of exhaust gas intake port section, solved diesel engine low speed, low-load over-emitting black exhaust and the variable working condition long problem of time of smoldering well, provide useful help the discharging that solves diesel engine; Also because two sections outlet pipes twist to revolve respectively fixes as one, thus compact structure, profile is terse, and general arrangement is easy, and the complete machine appearance quality is good.

Description of drawings

Embodiment of the present utility model is illustrated in conjunction with the accompanying drawings, wherein:

Fig. 1 is the structural representation of bidirectional screw pulse outlet pipe;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is the B-B sectional view of Fig. 1;

Fig. 4 is the C-C sectional view of Fig. 1;

Fig. 5 is the D-D sectional view of Fig. 1;

Fig. 6 is the E-E sectional view of Fig. 1;

Fig. 7 is the F-F sectional view of Fig. 1;

Fig. 8 is the G-G sectional view of Fig. 1;

Fig. 9 is the H-H sectional view of Fig. 1;

Figure 10 is the plan view of expansion tube;

Figure 11 is the left view of Figure 10;

Figure 12 is the right elevation of Figure 10;

Figure 13 is the plan view of pulse converter;

Figure 14 is the left view of Figure 13;

Figure 15 is the I-I sectional view of Figure 13;

Figure 16 is the right elevation of Figure 13.

Embodiment

With reference to accompanying drawing, bidirectional screw pulse outlet pipe, be that outlet pipe is divided into two sections, being connected between two sections has the expansion tube that two sections outlet pipes are communicated with, twist to revolve respectively for every section and fix as one, first section is by the first cylinder exhaust branch pipe 1 and preceding extension 30 thereof, the second cylinder exhaust branch pipe 2 and preceding extension 31 thereof, the 3rd cylinder exhaust branch pipe 3 and preceding extension 32 thereof and the 4th cylinder exhaust branch pipe 4 and preceding extension 33 thereof constitute, second section comprises the four or the five cylinder common exhaust pipe 14 that is made of the back extension 9 of the 4th cylinder exhaust branch pipe and the 5th cylinder exhaust branch pipe 5 that is communicated with this extension, back 9, the three or the six cylinder common exhaust pipe 15 that constitutes by the back extension 10 of the 3rd cylinder exhaust branch pipe and the 6th cylinder exhaust branch pipe 6 that is communicated with this extension, back 10, the two or the seven cylinder common exhaust pipe 16 that constitutes by the back extension 11 of the second cylinder exhaust branch pipe and the 7th cylinder exhaust branch pipe 7 that is communicated with this extension, back 11, the one or the eight cylinder common exhaust pipe 17 that constitutes by the back extension 12 of the first cylinder exhaust branch pipe and the 8th cylinder exhaust branch pipe 8 that is communicated with this extension, back 12, the stubborn direction of revolving of two sections outlet pipes is opposite, wherein first section is left-handed, second section is dextrorotation, and the last outlet pipe integral body that each root outlet pipe axially all faces is mutually reversed 90 ° of angles, end at second section outlet pipe, being connected has pulse converter 18, the flange 19 of pulse converter 18 exhaust gas intake port ends is provided with four through holes of corresponding connection with four common exhaust pipe of second section, and dock with the flange 20 of second section outlet pipe end, the exhaust outlet section of pulse converter 18 is provided with two exhaust outlets, one of them exhaust outlet 21 is communicated with the one or eight cylinder common exhaust pipe 17 and the two or seven cylinder common exhaust pipe 16, another exhaust outlet 22 is communicated with the three or six cylinder common exhaust pipe 15 and the four or five cylinder common exhaust pipe 14, expansion tube comprises that one includes the bellows 23 of four exhaust honeycomb ducts, each affixed flange of the two ends of bellows 23, respectively be provided with four through holes on these two flanges, four exhaust honeycomb ducts are with the preceding extension of exhaust branch pipe and extension connection afterwards, wherein locate by locating stud 26 between that flange 24 of close first section and first section terminal flange 25, and, clamp by another clip 13 near that flange 28 of second section and second section head end flange 29 by clip 27 clampings.

The described bidirectional screw pulse of present embodiment outlet pipe, for firing order is followed successively by first cylinder, the 6th cylinder, second cylinder, the 4th cylinder, the 8th cylinder, the 3rd cylinder, the 7th cylinder, the design of the 5th cylinder, change pulse converter, be adapted to the firing order diesel engine of first cylinder, the 3rd cylinder, the 5th cylinder, the 7th cylinder, the 8th cylinder, the 6th cylinder, the 4th cylinder, second cylinder equally.By changing pulse converter, also can be used for the horizontal twoport air inlet and the exhaust-gas turbocharger of twoport air inlet up and down.

Claims

1, a kind of bidirectional screw pulse outlet pipe, it is characterized in that outlet pipe is divided into two sections, being connected between two sections has the expansion tube that two sections outlet pipes are communicated with, twist to revolve respectively for every section and fix as one, first section by the first cylinder exhaust branch pipe (1) and preceding extension (30) thereof, the second cylinder exhaust branch pipe (2) and preceding extension (31) thereof, the 3rd cylinder exhaust branch pipe (3) and preceding extension (32) thereof and the 4th cylinder exhaust branch pipe (4) and preceding extension (33) thereof constitute, second section comprises the four or the five cylinder common exhaust pipe (14) that is made of the back extension (9) of the 4th cylinder exhaust branch pipe and the 5th cylinder exhaust branch pipe (5) that is communicated with this extension, back (9), the three or the six cylinder common exhaust pipe (15) that constitutes by the back extension (10) of the 3rd cylinder exhaust branch pipe and the 6th cylinder exhaust branch pipe (6) that is communicated with this extension, back (10), the two or the seven cylinder common exhaust pipe (16) that constitutes by the back extension (11) of the second cylinder exhaust branch pipe and the 7th cylinder exhaust branch pipe (7) that is communicated with this extension, back (11), the one or the eight cylinder common exhaust pipe (17) that constitutes by the back extension (12) of the first cylinder exhaust branch pipe and the 8th cylinder exhaust branch pipe (8) that is communicated with this extension, back (12), the stubborn direction of revolving of two sections outlet pipes is opposite, wherein one section is left-handed, another section dextrorotation, and the last outlet pipe integral body that each root outlet pipe axially all faces is mutually reversed 90 ° of angles, end linking at second section outlet pipe has pulse converter (18), the flange (19) of pulse converter (18) exhaust gas intake port end is provided with four through holes of corresponding connection with four common exhaust pipe of second section, and dock with the flange (20) of second section outlet pipe end, the exhaust outlet section of pulse converter (18) is provided with two exhaust outlets, one of them exhaust outlet (21) is communicated with the one or eight cylinder common exhaust pipe (17) and the two or seven cylinder common exhaust pipe (16), and another exhaust outlet (22) is communicated with the three or six cylinder common exhaust pipe (15) and the four or five cylinder common exhaust pipe (14).

2, bidirectional screw pulse outlet pipe according to claim 1, it is characterized in that expansion tube comprises that one includes the bellows (23) of four exhaust honeycomb ducts, each affixed flange of the two ends of bellows (23), respectively be provided with four through holes on these two flanges, four exhaust honeycomb ducts are with the preceding extension of exhaust branch pipe and extension connection afterwards, wherein locate by locating stud (26) between that flange (24) of close first section and the first section terminal flange (25), and, clamp by another clip (13) near that flange (28) of second section and second section head end flange (29) by clip (27) clamping.

3, bidirectional screw pulse outlet pipe according to claim 1 and 2 is characterized in that the stubborn direction of revolving of two sections outlet pipes, and first section is left-handed, and second section is dextrorotation.