SU1255722A1 - Exhaust system of i.c.engine - Google Patents

Description

FIELD OF THE INVENTION The invention relates to mechanical engineering, in particular to exhaust systems with devices for neutralizing exhaust gases.

The purpose of the invention is to increase the noise level.

FIG. 1 shows the exhaust system, a general view; in fig. 2 - the same, longitudinal section; in fig. 3 shows section A-A in FIG. 2

The exhaust system of the internal combustion engine contains the receiving pipes 1, the neuralizers 2 communicated with them, the reactive silencer 3 consisting of the resonant chamber 4 and the expansion chamber 5 separated from each other by a perforated partition 6, the exhaust pipe 7 communicated with the resonant chamber 5, the neutralizers 2 through its outlet pipes 8, perforated pipes 9 passing through the resonant chamber 4, and throttling pipes 10 with an expansion chamber 5, the total wire sections of the perforations of the pipes ( 5gr.), Throttling pipes (5dr.), Perforations of the partition (Sin-i).) Are made in accordance with the correlation

 0.7-0.9; 1 1.1 --- 1.3 5dr.

The exhaust system works as follows.

Exhaust gases from the engine manifold through the receiving pipe 1 come to two neutralizers 2, where they catalytically afterburning and, since the neutralizer reactor simultaneously performs the functions of an active silencer, noise is damped (composes high frequency vibrations). Next, the flow of exhaust gases from the converters 2 through the outlet nozzles 8 gets

° to the jet silencer 3, where it is divided into jets, damping their speed and changing directions. Partially, the gas flow after entering the perforated pipes 9 and its throttling into the throatJ of the waste pipes 10 enters the expansion chamber 5, and partially through the holes of the perforated pipes 9, its jets enter the resonant chamber 4 and encounter gases passing from the expansion chamber 5 through the perforation of the partition wall 6. then the exhaust gases are emitted through the outlet 7 to the atmosphere. As a result of splitting the stream into jets, sparing, changing their direction of repeated application, quenching of sound energy, mainly low and middle frequencies, characteristic of automobile internal combustion engines, results in a reduction in the total noise level of exhaust gases.

five

FIG. 2

fig.Z

Compiled by O. Nemtsov

Editor N. BobkovTechred I. VeresKorrektor M. Demchik

Order 4795/33 Circulation 500 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

1 13035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

Claims (1)

INTERNAL COMBUSTION ENGINE RELEASE SYSTEM, comprising receiving pipelines connected on one side to the exhaust manifold of the engine and, on the other hand, to neutralizers, the outlet pipes of which are connected to a muffler equipped with an exhaust pipe, characterized in that, in order to increase the silencing, the silencing is made of two chambers - the resonance and expansion chambers, separated by a perforated partition, and in the resonance chamber are additionally installed perforated pipes and chokes and the perforated pipes are connected on one side with the outlet pipes of the converter, and on the other, with throttling pipes connected to the expansion chamber, and the outlet pipe is connected to the resonance chamber, and the total cross-section of the holes of the perforated pipes Btr., the total cross-section of the Bdr throttling pipes. total section of the holes of the perforated septum Snep. made in accordance with the ratios = 0.7-0.9; = 1.1-1.3 odr. odr. SU. „, 1255722 Fig. 1