SU1242738A1 - Device for monitoring combustion in internal combustion engine - Google Patents

Abstract

This invention relates to a combustion control technique in heat engines. The aim of the invention is to increase the reliability and reliability of operation of the device for controlling the combustion in a wide range of changes in the controlled operating modes of the internal combustion engine by increasing the allowable mechanical loads on the device and increasing the angle of the controlled combustion zone. To control the combustion process, the device is an input node 1 mouth / 7 i (L 1C 4i Nd × 00 00

Description

poured into the adapter hole of the indicator tap and secured; on the engine housing. The device is connected to the internal volume of the combustion chamber through channel 8. The radiant flux is collected by means of collecting 29., 30 5 31 to the photodetector 18. The signal from the AF receiver 18 is outputted to the recording device and. analyze. Dp of increasing the range of measurements, the optical fibers 15, 16 are arranged in series. In the process of operation of the device is carried out

The invention relates to a combustion control technique in heat engines, and more specifically to devices for automated and visual control of the combustion of a fuel-air mixture in internal combustion engines, and can be used in thermal power transport and ship devices.

The aim of the invention is to increase the reliability and reliability of operation of the device for controlling the combustion in a wide range of changes in the controlled modes of operation of the internal combustion engine by increasing the allowable mechanical loads on the device and increasing the viewing angle of the controlled combustion zone. The drawing shows the proposed device, a longitudinal incision. The device for controlling the combustion contains a split housing consisting of the inlet assembly 1, the housing sleeves 2 and 3, the transition sleeves 4--6 and the outlet assembly 7 interconnected by means of a thread. Along the axis of the inlet is a channel 8, through which the device is connected to the internal volume of an engine combustion chamber (not shown). On the outer surface of the inlet 5 there is a flange 9 with openings to, al mounting the device on the combustion chamber. The axis of the housing sleeves 2 and 3 are installed thin-walled benefits 11 and 12, which are fastened with nuts 13 and 14. In the sleeve 11

gas-dynamic unloading of light guides from the maximum pressure drop due to the flow of gas from the unloading cavity 20 through the bypass 32 and the jet 33 to the unloading cavity 21. The unloading cavities 20, 21, 22 serve to unload the collecting lenses 29, 30, 31, which increase the angle of observation of the combustion zone from axial forces and the distribution of the maximum pressure drop between the fibers in the process of diesel operation. 1 il.

and 12 tightly mounted optical fibers 15 and 6., made in the form of glass - cylindrical rods. The photodetector 18 is fixed with a gap along the axis of the output unit 7 through the heat-insulating spacer 17, which is fixed in the assembly by a spring ring 19 (the electrical terminals of the photodetector 18 are not shown). Transition sleeves 4-6 with

the end of the input node 1, the housing sleeves 2, 3 and the output node 7 form a discharge chamber 20-22. In the discharge chambers 20-22 on the internal diameter of the transition sleeves

4-6, transition rings 23-25 are installed with bypass openings 26-28 made around the periphery. On the inside; the diameter of the transition rings 23-25 is set collecting

lenses 29-31.

An overflow channel 32 is made in the housing 2, in which a jet 33 is installed in the thread. An overflow channel 32 connects the jet 33. discharge chambers 20 and 21 between themselves. The unloading chamber 22 through the photodetector 18 formed during the installation is in communication with the atmosphere.

Combustion control with more than two body bushings. The nozzles with the nozzle are made in each case sleeve, except the last, counted from the inlet knot. The effective area of the nozzle 33 is selected depending on the volume of the discharge chambers 20 and 2I and the parameters characterizing the operation of the engine in such a way as to ensure the same pressure drop in P

p --- on fibers 10 and 11. Here

OS

P - the maximum pressure in the combustion chamber of the engine. When performing a device with the number of corns bushings 2 and 3 more than two maximum

differential pressure at each light

de is equal to d r d number

body sleeves, equal to the number of optical fibers.

The effective area of the nozzle 33 is determined by solving a system of known equations that describes the process of the flow of gas from the discharge chamber 20 to the discharge chamber 21 during gas compression and subsequent combustion of the fuel-air mixture. For a critical flow regime, a formula is obtained.

-E

 P

k. (2 4-irf

H + r

where F is the effective area} of the kicker; p is the maximum frequency of rotation of the engine crankshaft; R - gas constant product

burnout

T is the temperature of the combustion products;

k is the adiabatic index of combustion; : Y is the volume of the discharge chamber.

When performing a device with a number of case sleeves 2 and 3 more than two, the formula for determining the effective area of the nozzles will take the form

F ,. gi jnil -Yi

 NlRT. (L + l-i) Tk. (C

K j

where 1 - the number of body bushings; i is the serial number of the nozzle,

counting from the input node; V- - volume of the discharge chamber

for the i-M jet. The device works as follows.

In order to control the burning process, the device with an input unit 1 is installed in the adapter hole of the diesel indicator valve and fixed with the help of a flange 9 with openings 10 on the motor housing. Device

connects to the internal volume of the combustion chamber through channel 8. When the dizap in the volume of the combustion chamber is operated, 5 processes of inlet, compression of the working fluid, combustion of the fuel-air mixture, expansion and release of combustion products are periodically repeated. At the same time, the temperature of the working fluid and combustion products varies periodically. The radiant heat flux proportional to the temperature of the combustion products to the fourth power (according to the Stefan-Boltzmann law) is directed by means of collecting lenses.

15 29-31, installed in transition rings 23-25 with bypass holes 26-28, on a photodetector 18, installed in the output node 7 through the heat-insulating spacer 17 20 and fixed in the node 7 by a spring ring 19. Signal from the photoconductor

18 output to the recording instrument and analyze. In terms of the magnitude and nature of the signal taken from the photodetector 18, the combustion in the cylinder is controlled and the units are adjusted in the diesel engine.

The device allows visual control of the burning, for

0 that show spring ring

19 and remove the photodetector 18.

Reliability of operation of the device in a wide range of diesel operation modes is ensured by 5 consecutively arranged light guides 15, 16 installed in thin-walled sleeves 11 and 12. The sleeves 1G and 12 are fixed in case sleeves 2 and 3 with nuts 13 and 14. In the process of operation of the device performs gas-dynamic unloading of the optical fibers 2 and 3 from the maximum pressure drop due to the flow of gas from the discharge cavity 20 to the 5 bypass channel 32 s. by the jet 33 into the unloading cavity 21. The unloading cavities 20-22 formed by transition sleeves 4-6 and the ends of the input 1, output 7 nodes and corpus sleeves 2 and 3 serve to unload the collecting lenses, 29-31, which increase the angle overview of the combustion zone, from axial forces and distribution of the maximum pressure drop between the fibers in the process of diesel operation. This increases the reliability of the device under high pressure conditions.

The test results of pre; the false device showed it) high reliability. By optimizing fuel consumption by operation mode and cylinders, the specific fuel consumption was reduced by 1-3%. This is equivalent to an annual economy of 70-210 tons of fuel per diesel locomotive.

The use of the invention allows to increase the reliability of the device and the viewing angle of the controlled combustion zone.

Claims (1)

Invention Formula A device for controlling the combustion in an internal combustion engine, comprising a housing, a light guide and a photodetector, the housing being implemented as an input and output nodes and a housing sleeve in which a light guide is placed, the input node is made with a communication channel to the combustion chamber, and Photodetector is located at the output node. The editor P. Kossei Zakyz is distinguished by 3690/37. Compiled by N. Patrakhaltsev Tehred O. Gortvay Proofreader L. Patay Circulation 778. Subscription VNIPPI State Committee of the USSR for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab, 4/5 Production and printing company, Uzhgorod, st. Project, 4 Not only that, in order to increase its reliability and reliability and increase the viewing angle, the device additionally contains at least one additional housing sleeve with an additional light guide, transition sleeves and rings, assembled, and lenses and nozzles, 11 transition sleeves are placed after- j pBaTenbHo between the INPUT node and the housing sleeve, between the main and additional housing sleeves and the additional housing sleeve and the output node, the transition rings are placed in the transition sleeves and form in them discharge chambers on the sides of the transition rings, and collector, and. the lenses are located in the transition; rings, with all case sleeves, except the last one before the exit node, are made with by-pass: channels in which the nozzles are located and which connect the discharge chambers are between them, and the transition rings are made with by-pass holes connecting the discharge chambers.