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KRYOTEC ENGINE
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16.
Lugging Engine
Lugging is running the engine at a lower RPM in a
condition where a higher RPM (more
power/torque) should be implemented.
Especially susceptible on vehicles equipped with
a manual transmission. This driving habit causes
more stress loading on the piston and can lead to
increases in engine oil consumption.
17.
Turbocharged Engines
There is a possibility for higher crankcase
pressure (as compared to naturally aspirated
engines) which is normal for turbocharged
engines. This condition causes varying amounts
of engine oil to enter the intake manifold, charge
air cooler and associated plumbing to and from
the charge air cooler, also a leaking turbocharger
seal will draw oil into the combustion chamber
where it will burn (blue smoke from tail pipe may
be present) and form carbon deposits which
contribute to further oil consumption as they
interfere with proper engine function.
18.
Restricted Air Intake
Excessive restriction in the air intake system will
increase engine vacuum and can increase oil
consumption, an extremely dirty air filter would be
one example of this situation.
Maintenance Instructions for Common Rail
Common rail refers to a small fuel accumulation
tank called Rail, where the pressure of the fuel
remains almost constant and always available to
injectors. The high-pressure pump compresses
the fuel at a pressure of 1600 bar and transfers it
through a connection pipe to the high-pressure
accumulation duct or Common Rail.
The common rail then softens the pressure
oscillations caused by the opening and closing of
the injectors and by the continuous discharge of
the high pressure pump. The fuel is then
transferred from the common rail through pipes to
the electronic injectors Due to high pressure
developed in the common rail system, care and
cleanliness is of utmost importance during
removal and installation of the common rail
system. Tiny dust particles (0.2 mm) can block
injector nozzle in opening position, which will then
continuously inject fuel into the cylinder there by
increasing the cylinder pressure leading to engine
damage.
NOTE
The ambient conditions to store common rail
parts are: -30°C to +60°C, and humidity
between 0 to 80%.
The nozzle holder should not place in or near a
magnetic field source above 400 A/m.
All system components must be thermally
sealed in plastic bags and clearly labeled.
Prior to working on common rail system, the
technician must thoroughly wash hands before
and during the work as necessary.
WARNING
Smoking is strictly prohibited while working on
common rail system, as the system is under high
pressure and may cause serious injury, or
component damage.
Prior cleaning of engine and injection system
Clean the area around the engine and then fuel
injection system with clean brush and degreasing
agent. Cover electrical unit’s viz., starter,
alternator etc., to avoid fuel spray/splash.
Clean the joints and external surface of the
injection system and each connection that is to be
opened, by a vacuum cleaner. The surface of the
workstation on which the work on common rail is
to be carried, should preferably be stainless steel.
The workplace should be a closed room, clean
and free from machine tools and welding
equipment.