How To Clean Power Supply With Compressed Air
For every hour of operation, more than 800 miii of air is sucked into the engine cylinders, which, particularly in weather of heavy dustiness, is clogged with many tiny grains of sand, which are stronger than steel in their hardness
If these particles get into the engine cylinders together with air, then it. abrading the surface of the cylinders, piston rings and fingers, in a brusque fourth dimension volition bring the engine to an inoperable state.
On KamAZ vehicles, a 2-phase dry-type air cleaner is used in the air supply organization; passing through it, the sucked air is cleaned of dust by inertial method and filtration.
The figure shows the air intake systems used on various models of KamAZ vehicles.
Air is taken into the engine through the air intake.
Between the fibroid air intake and the air ducts mounted on the engine, a seal is provided - a corrugated rubber piping, inside of which a pressure disk is inserted, which serves as a support for the spacer spring. The latter ensures the tightness of the connection between the seal and the coarse air intake when the cab is in a tailor-made position.
The air cleaner for iv KamAZ-5320 and KamAZ-55102 vehicles is attached to the left side member of the frame.
On other vehicles, the air cleaner is mounted on bracket v.
Dry type air cleaner, 2-stage. The first stage is centrifugal - a monocyclone with the collection of separated grit in a hopper, the second stage - a paper filter chemical element.
The air cleaner consists of a body 8, a filter element 5, a embrace ane attached to the torso with four latches.
The tightness of the connection is ensured by gasket 2
In the inner crenel of the cover at that place is a sectionalization with a slot and a plug, which forms a dust drove cavity (bunker).
At the inlet pipe of the air cleaner in that location is a dust deflector 4. The filter element is stock-still in the housing with a self-locking nut 6.
Sucked air through the inlet pipe enters the filter.
The dust separator creates a rotational movement of the air flow in the annular gap betwixt the housing and the filter chemical element, due to the action of centrifugal forces, dust types are thrown to the housing wall and collected in the hopper through a slot in the partition.
So the pre-cleaned air: passes through the filter chemical element where information technology is finally cleaned.
To clean the hopper from dust, remove the encompass, remove the plug from the hole in the baffle, remove grit and wipe the hopper.
The cover should exist installed so that the pointer on the lesser points up with the filter horizontal (KAMAZ-55111, KamAZ-5410, KamAZ-54112 vehicles).
Clean air from the air cleaner enters the engine intake manifolds.
In order to increase the efficiency of cleaning the air entering the engine and increase the life of the filter element, a pre-cleaner is installed in the air cleaner.
The pre-cleaner is a sheath fabricated of not-woven filter cloth, which is put on the filter element before installing it in the filter housing.
The intake air ducts are bolted to the side surfaces of the cylinder heads from the camber side through sealing paronite gaskets and continued to the intake channels of the cylinder heads.
The air intake ducts of the left and correct halves of the unit are continued to each other by a connecting pipe. The branch pipe is bolted to the air duct flanges.
The connections between the spigot and the intake air ducts are sealed with rubber gaskets.
The air supply system of the KAMAZ-7403 engine differs from the KAMAZ-740 engine in the installation of an air cleaner, the design of air ducts, intake manifolds and pipes.
Clean air from the air cleaner through the tee enters the 2 centrifugalpressors and under an overpressure of seventy kPa (0.7 kgf / cm2) in maximum power mode is supplied through the intake manifolds to the cylinders.
The connection of the air supply tee with compressors and compressors with intake manifolds is provided past rubber pipes and hoses, which are tightened with clamps.
Dust Indicator
The degree of clogging of the air cleaner is judged by the indicator indicate. Information technology is installed in the cab and is continued by a pipeline to the engine intake manifold.
When the air cleaner is contaminated above the permissible norm, the vacuum in it increases so much that the indicator is triggered, i.e. the reddish drum 2 closes the indicator window and does non return to its original position after the engine is stopped.
This indicate indicates the need for maintenance of the air cleaner.
To reset the pulsate 2 to its original position, just plow the disk i until it clicks in the direction indicated past the pointer.
When the limit vacuum of half-dozen.86 kPa (0.07 kgf/cm2) is reached in the intake manifolds of the engine, the indicator is triggered - the reddish department of the drum closes the indicator window and remains in this position after the engine is stopped.
This indicates the need for air cleaner service.
Air filter maintenance
Clean the air cleaner paper element, precleaner and hopper, to do this:
To remove dust, remove the encompass, unscrew the fastening nut, unscrew the plugs from the holes in the partition, remove grit and wipe the hopper.
The embrace must be installed with the pointer pointing upwardly when the air cleaner is horizontal (models 55111, 5410, 54112).
The filter element and the pre-cleaner can be cleaned by blowing or washing, after removing the pre-cleaner from the filter element.
Purge is effective in case of dust pollution without soot.
For purging, information technology is necessary to straight dry out compressed air inside the filter chemical element at an angle to the surface of its inner casing under a pressure of no more than than 3 kgf/cm2. The element must be blown until dust is completely removed.
Clean the precleaner by shaking or bravado.
To check the status of the filter element paper-thin, you need to illuminate it from the inside with a lamp and audit the cardboard through the holes in the outer casing. For convenience, yous tin can move the filter curtain.
If there are tears or other through harm to the paper-thin, the chemical element must be replaced.
Rinsing the filter element
Rinsing is used when the pre-cleaner and filter board are contaminated with dust, soot, oil, fuel.
Rinse the filter element in a warm (temperature xl-50 °C) aqueous solution of neutral detergents (20-25 thousand of pulverization per 1 liter of water), followed past rinsing in clean h2o.
Since rinsing leaches phenolic resins from the filter curtain cardboard, as a result of which the strength of the cardboard decreases, it is recommended to launder the filter element no more three times.
Subsequently washing, information technology is recommended to check the filter element by pressing it with compressed air in water in the following order:
- install a wet filter chemical element half-dozen between covers iv and 7, and then immerse it in water to a depth of lx mm.
Before testing or directly in the test facility, soak the dry filter element in water for v-x minutes to make full the pores in the cardboard with water; supply air at a pressure of 1.six kPa (160 mm w.c.) to the air cylinder 1 and thus inside the element.
This pressure is maintained by a constant liquid valve ii, the tube of which is immersed in water to a depth of 160 mm and is controlled by a pressure guess 3.
In order to avoid devastation of the filter curtain element, the air pressure should not increase even briefly higher up 2.0 kPa (200 mm of water column);
- slowly rotate the chemical element, paying attention to the release of air bubbles from its outer surface; bring a transparent cap five filled with water to the place where air bubbles are released and measure the time it takes to fill up it with air.
When filling the cap with a book of 0.5 fifty in less than 20 seconds through one harm to the filter element incull.
Dry the serviceable filter chemical element, equally well as the precleaner, thoroughly before installing information technology on the car.
Exercise non dry with an open flame or hot (temperature over 50 °C) air.
When installing the filter element and precleaner on the automobile, check the integrity of the rubber gaskets.
It is not allowed to contact the outer casing with the precleaner (the casing can be straightened).
If, after servicing the filter element and pre-cleaner past washing or bravado, the clogging indicator is triggered when the vehicle mileage is less than earlier the next TO-1, supervene upon the filter element and pre-cleaner.
In one case a year, check the accurateness of the air cleaner clogging indicator.
If the vacuum deviation at the moment the indicator is triggered is more than 0.five kPa (50 mm w.c.) from the vacuum set for the engine of 7.seven kPa (700 mm due west.c.), supervene upon the indicator.
Source: https://autoruk.ru/en/kamaz/kamaz-engine/air-supply-of-diesel-kamaz
Posted by: mccuneeverytheir36.blogspot.com
0 Response to "How To Clean Power Supply With Compressed Air"
Post a Comment