CN205559040U - Blast pipe of intercommunication - Google Patents

Abstract

The utility model relates to a blast pipe device for the diesel engine especially relates to a blast pipe of intercommunication. Including preceding exhaust manifold, middle blast pipe, back exhaust manifold and expansion joint, middle blast pipe both ends are passed through the expansion joint and are connected preceding exhaust manifold and back exhaust manifold respectively, the three jar of engine is connected respectively to preceding exhaust manifold and back exhaust manifold below, and two jars of engine are connected to middle blast pipe below, communicate between the middle blast pipe, a two port exhaust passage is connected with preceding exhaust manifold to one end, and a two port exhaust passage is connected with back exhaust manifold to one end. The utility model discloses can reduce the discharge pressure in the blast pipe, reduce pumping loss, reducing fuel consumption optimizes pipeline spare part simultaneously, reduces assembly part quantity and process flow.

Description

A kind of exhaustor of connection

Technical field

This utility model relates to a kind of use for diesel engine exhaust pipe device, especially relates to the exhaustor of a kind of connection.

Background technology

The exhaust pipe of engine has constant pressure exhaust marifold, pulse exhaustor, MPC exhaustor (pulse level pressure combination exhaust pipe, have pulse and pressurization methods concurrently) at present, and wherein pulse exhaustor is applied at 4 cylinders, 6 cylinder machines etc..

Overall pulse exhaustor type of attachment structure of the prior art is complicated, and the parts of connection are many, and gas leakage risk is big, and processing and fabricating is inconvenient.And normal pulsed exhaustor of the prior art, low compared with overall pulse exhaustor capacity usage ratio, oil consumption is big.

Utility model content

The purpose of utility model is to discuss certain 16 cylinder machine to use the pulse exhaustor of which kind of form can take into account technique, processing, Energy harvesting aspect, make it can utilize exhaust pulse energy, reduce pumping loss the most as much as possible, and then reduction oil consumption, optimize pipeline simultaneously, reduce Assembly part quantity and technological process.For reaching above-mentioned purpose, this utility model provides the exhaustor of a kind of connection, by on the basis of normal pulsed exhaustor, connection intermediate exhaust pipe, reach to reduce the pressure at expulsion in exhaustor, reduce pumping loss, reduce oil consumption, optimize pipeline parts simultaneously, reduce Assembly part quantity and the purpose of technological process.

This utility model takes techniques below scheme, and the exhaustor of a kind of connection, including front exhaust manifold, intermediate exhaust pipe, back exhaust manifold and expansion joint；Intermediate exhaust pipe two ends connect front exhaust manifold and back exhaust manifold respectively by expansion joint；Connect three cylinders of electromotor below front exhaust manifold and back exhaust manifold respectively, below intermediate exhaust pipe, connect two cylinders of electromotor；Connecting between intermediate exhaust pipe, one end is connected a twoport exhaust duct with front exhaust manifold, and one end is connected a twoport exhaust duct with back exhaust manifold.

Further, communicating in the middle of intermediate exhaust pipe, two ends twoport exhaust duct with front exhaust manifold and back exhaust manifold respectively is arranged side by side.

The utility model has the advantages that:

1, relatively normal pulsed exhaustor, can reduce overpressure, effectively utilizes exhaust pulses, reduces pumping loss, drops oil consumption；

2, relatively overall pulse exhaustor, can simplify pipeline, simplifies the version of pulse exhaustor, reduces parts, reduces gas leakage risk, improves assembling.

This utility model exhaustor is used for company 16 cylinder diesel engine for power generation product, and four cylinder pulses more common at fixed point can be dropped oil consumption 3.4g/kWh, and can be simplified design, processing is simple, reduces the quantity of the parts connected, and simplifies assembling, reduce assembly cost, reduce gas leakage risk simultaneously.

Accompanying drawing explanation

In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 a is the structural representation a of embodiment 1；

Fig. 1 b is the structural representation b of embodiment 1；

Fig. 2 is the exhaust duct schematic diagram of embodiment 2；

Fig. 3 is 16 Cylinder engine each cylinder schematic diagram；

Fig. 4 is each cylinder aerofluxus interval angles schematic diagram；

1-front exhaust manifold in figure, 2-intermediate exhaust pipe, 3-back exhaust manifold, 4-expansion joint, 5-twoport exhaust duct.

Detailed description of the invention

For making the purpose of this utility model embodiment, technical scheme and advantage clearer, below in conjunction with the accompanying drawing in this utility model embodiment, technical scheme in this utility model embodiment is clearly and completely described, obviously, described embodiment is a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.

Embodiment 1:

As illustrated in figs. ia and ib, the exhaustor of a kind of connection, including front exhaust manifold 1, intermediate exhaust pipe 2, back exhaust manifold 3 and expansion joint 4；Intermediate exhaust pipe 2 two ends connect front exhaust manifold 1 and back exhaust manifold 3 respectively by expansion joint 4；Connecting three cylinders of electromotor below front exhaust manifold 1 and back exhaust manifold 3 respectively, two cylinders and the centre that connect electromotor below intermediate exhaust pipe 2 communicate；Connecting between front exhaust manifold 1, intermediate exhaust pipe 2, one end is connected a twoport exhaust duct 5 with front exhaust manifold 1, and one end is connected a twoport exhaust duct 5 with back exhaust manifold 3.

Embodiment 2:

The exhaustor air flue being illustrated in figure 2 described connection represents, communicates in the middle of intermediate exhaust pipe, and two ends twoport exhaust duct 5 with front exhaust manifold 1 and back exhaust manifold 3 respectively is arranged side by side.

Remaining is the most same as in Example 1.

For four-cycle diesel, typically from exhauxt valve opens to closing about 240 ° of crank angles of continuity, therefore the continuity angle of one complete exhaust pressure wave of four-stroke engine is about 240 ° of crank angles.On multicylinder engine, owing to the fire angle between each cylinder is less than exhaust duration, it is necessary to exhaustor is carried out branch.The type of the present embodiment application is 16 Cylinder engines, uses the form of four superchargers, and each cylinder sorts as shown in Figure 3.

Firing order is A1-A7-B4-B6-A4-B8-A2-A8-B3-B5-A3-A5-B2-A6-B1-B7, and firing interval angle is 45 °.

Overall pulse exhaustor of the prior art and normal pulsed exhaustor are carried out performance comparison, design parameter such as following table

By the contrast to above two structure, overall pulse exhaustor is compared with normal pulsed exhaustor form, and pumping loss is little, and oil consumption is low.During normal pulsed exhaustor is optimized, obtain dropping the purpose of oil consumption by reducing pumping loss.

According to each cylinder exhaust phase, exhaustor segmented version of the present utility model can make full use of exhaust pulse energy.According to firing order A1-A7-B4-B6-A4-B8-A2-A8-B3-B5-A3-A5-B2-A6-B1-B7, firing interval angle is 45 °, illustrating that each cylinder aerofluxus interval angles is shown in Fig. 4, by one-dimensional calculating, exhaustor of the present utility model relatively common exhaust duct can reduce oil consumption.

Claims (2)

1. one kind connection exhaustor, it is characterised in that: include front exhaust manifold (1), intermediate exhaust pipe (2), Back exhaust manifold (3) and expansion joint (4)；Intermediate exhaust pipe (2) two ends are connected respectively by expansion joint (4) Connect front exhaust manifold (1) and back exhaust manifold (3)；Under front exhaust manifold (1) and back exhaust manifold (3) Side connects three cylinders of electromotor respectively, and intermediate exhaust pipe (2) lower section connects two cylinders of electromotor；Middle Connecting between exhaustor (2), one end is connected a twoport exhaust duct (5), one end with front exhaust manifold (1) A twoport exhaust duct (5) it is connected with back exhaust manifold (3).

2. the exhaustor of connection as claimed in claim 1, it is characterised in that: in the middle of intermediate exhaust pipe (2) Communicating, two ends are respectively with the twoport exhaust duct (5) of front exhaust manifold (1) and back exhaust manifold (3) side by side Arrange.