3. I.C. Engine Means;- Internal Combustion Engine.
1.Fule supply systeam.
There are different fuel supply systems for spark
ignition (petrol) and compression ignition (diesel)
engine.
Fule supply systeam for petrol engine.
Fuel supply system for Spark ignition (petrol)
engine: In petrol engine the combustible mixture of
fuel is prepared outside the combustion chamber.
5. Fule supply system for diesel engine
Fuel supply system for Compression
ignition (diesel) engine: In diesel engine
only air is injected during the suction stroke
and it is compressed during compression
stroke.
7. 2. Fule injection systems.
Fuel injection is a means of metering fuel into an internal
combustion engine. In modern automotive applications, fuel
metering is one of several functions performed by an "engine
management system".
Air injection system
Airless or solid injection system
1.common rail system
2.individual pump system
12. 3.Lubrication systems
Lubrication system
The engine lubrication system is designed to deliver
clean oil at the correct temperature and pressure to
every part of the engine.
Petrol
Splash
Pressure
Dry pump
14. 1.Petrol.
working of a petrol engine.
The working of an internal combustion
engine is divided into four stages called four
strokes of the engine and hence the engine
is called a four stroke engine.
15. 2. Splash.
The splash system is no longer used in
automotive engines. It is widely used in small
four-cycle engines for lawn mowers,
outboard marine operation, and so on.
16. 3. Pressure.
Pressure lubrication system of the internal-
combustion engine are to be largely
integrated in the engine in a space-saving
manner.
17. 4.Dry sump.
A dry sump is a lubricating motor oil management method for
four-stroke and large two-stroke piston
internal combustion engines that uses external pumps and a
secondary external reservoir for oil, as compared to a
conventional wet sump system.
Dry sumps are common on larger diesel engines such as those
used for ship propulsion. Many racing cars, high performance
sports cars, and aerobatic aircraft also utilize dry-sump
equipped engines because they prevent oil-starvation at high g
loads, and because their lower center of gravity positively
affects performance.
19. Cooling system.
Air cooling system.
Air cooled systeam is generally use in small
engines says up to 15-20 kw and airo plane
engines.
In case of water cooling syatem are
leakeges, but in this case there no leakages.
21. Water cooling system
In this method cooling water jackets are
provided around the cylinder. Cylinder head,
value seats etc. the water when circulated
through the jackets. It absorb head of
combustions. This hot water will then be
cooling in he radiator partially by a fan and
partially by the flow developed by the forward
motion of the vehicle. The cooled water
again recirculated through the water jackets.
23. 6.Ignition system for s.i. engine.
An ignition system is a system for igniting a fuel-air mixture.
Ignition systems are well known in the field of
internal combustion engines such as those used in
petrol (gasoline) engines used to power the majority of
motor vehicles, but they are also used in many other
applications such as in oil-fired and gas-fired boilers,
rocket engines, etc.
The first ignition system to use an electric spark was probably
Alessandro Volta's toy electric pistol from the 1780s. Virtually
all petrol engines today use an electric spark for ignition.
Diesel engines rely on fuel compression for ignition, but usually
also have glowplugs that preheat the combustion chamber to
allow starting of the engine in cold weather. Other engines may
use a flame, or a heated tube, for ignition.
24. • Coil ignition system
An ignition coil (also called a spark coil) is an induction coil in
an automobile's ignition system which transforms the battery's
12 volts (6 volts in some older vehicles) to the thousands of
volts (20 to 30 thousand volts or more) needed to spark the
spark plugs. Some coils have an internal resistor to reduce the
voltage and some rely on a resistor wire or an external resistor
to reduce the voltage from the car's 12 volt wiring flowing into
the coil. The wire which goes from the ignition coil to the
distributor and the wires which go from the distributor to each of
the spark plugs are called spark plug wires or high tension
leads.
26. •Magneto system.
Most small lawn mowers, chain saws,
trimmers and other small gasoline engines
do not need a battery. Instead, they actually
generate the power for the spark plug using
a magneto. Magnetos are also used on
many small airplanes (for example, the
Cessna 152 ) because they are extremely
reliable.
