Sepeda Motor

2009-09-05T17:08:00.000-07:00

SPARK PLUG

Picture 1.Busi

High voltage generated by the ignition coil secondary coil, after a series of high voltage between the electrodes will be excluded middle (positive electrode) and electrode side (negative electrode) plugs in the form of sparks. The purpose of this plug in is to flow the current pulses or high voltage from the cap (terminal) into the spark plug center electrode to the electrode side through the air gap and then ended the period (ground). Spark plug is a part (component) ignition system is biased low, designed to perform tasks within a specified time and must be replaced with new ones if the plugs are worn or eroded.

Construction Plugs
The top of the spark plug is a terminal that connects the high voltage cable. These terminals connect with the middle electrode is usually made from a mixture of nickel to withstand the heat and destructive elements in the fuel, and often has a copper core to help remove heat. In some electrode spark plugs are made from a mixture of silver, platinum, palladium or gold. -Spark plugs are designed to provide resistance to a greater erosion and can remain good.

Picture 2. Construction plugs

Central electrode through an insulator ceramics found on the outside. Isolator serves to protect the electrode from electrical leakage and protect from heat engines. To prevent gas leaks are seals between electrodes with an insulating middle and the body between the spark plug insulators.
Body plugs made of steel and nickel plate is usually given to prevent corrosion. The top of the hexagon-shaped outer body (the corner of the hexagon) which serves to harden (set up) and relax (open) spark plugs. At the bottom is made so that the screw can be screwed plugs (attached) to the cylinder head. At the bottom there is the spark plug electrode side or the negative electrode. This electrode spark plug is welded to the body to point to the time when there is a spark. There are two types of seat plugs are flat and cone shaped. Sparkplug holder is part of the body of the spark plug at the top screw that will meet / is paired with the cylinder head. If the spark plugs seat is flat, then there are the ring seals (sealing washer), on the other hand, if the cone-shaped holder does not require the ring seals.

Ability of generating sparks depends on several factors, among others, as follows:
a. Form electrode spark plugs
Round electrode spark plugs will make the leap sparks while square and pointed and sharp will make a stepping fire. The spark plug electrodes will be used in the round after a long time, therefore
sparks leap will be weak and cause ignition of error, otherwise the thin electrodes or sharp will make sparks, but use a short life due to faster wear

b. Spark Plug Gap
If the spark plug electrode gap larger sparks would be a difficult jump and the secondary voltage required for it would have been up. If worn spark plug electrodes, means the gap increases, sparks leap becomes more difficult so that will cause ignition fault.
Gap of electrodes for motorcycles (arrow in image at right) usually 0,6-0,7 mm (for details see the user manual or catalog spark plugs)

Figure in addition to the electrode gap is too small. This will result; weak spark, electrode dirty fast, especially on the 2 machines can not (two strokes).

Figure in addition to the electrode gap is too large. This will result in the need for jump voltage spark higher. Insulator-insulator high-voltage parts quickly damaged by the children brought up-ignition voltage extraordinary height.
If the ignition system can not meet these needs, the engine began life is choked up at full load.
In addition, the spark plug gap is too large can also cause the engine a bit difficult to start up.

c. Compression Pressure
If the compression pressure increases, the interest any will become increasingly difficult to jump and voltage required higher and higher, this also happens during heavy load and slow the vehicle Take a low-speed and fully open the gas valve. Required ignition voltage also rises when the temperature mixture of air-fuel down.

2009-09-05T17:00:00.000-07:00

Ignition Coil Type

There are three main types of ignition coils used on motorcycles, namely:
1. Canister Type
This type has an iron core in the middle and secondary coil surrounding the iron core. Primary coil in the outside of the secondary coil. Overall the components are assembled in one house in a metal canister. Sometimes canister filled with oil (lubricant) to help reduce the heat coil.

Picture 1. Ignition coil Canister type

2. Molded Type
Molded coil type is the type commonly used now. In this type of iron core in the center surrounded by a primary coil, while the secondary coils are on the outside. Overall the components are assembled and then wrapped the resin (resin) to withstand the vibrations that are usually found in motorcycles. Type coil molded into a popular choice for the construction of resistant and strong. In multicylinder engine usually one coil serving two spark plugs because they have two high voltage wires from the secondary coil.

Picture 2. Ignition coil molded type

3. Integrated Ignition Coil Type With The Spark Plug Cap (Spark Plug)
This coil type is the most recent type and often referred to as the coil rod (stick coil). Large size and weight are smaller than the type of coil and molded most advantage of the coil does not require a high voltage cable.

Picture 3. Integrated ignition coil type with spark plug cap

2009-09-05T16:58:00.000-07:00

Ignition Timing

During ignition of a mixture of gasoline and air is a time
of a spark plug spark some degree before top dead centre (TDC) at the end of the compression step. When the occurrence of spark
time must be determined appropriately so that you can burn
the perfect mix of gasoline and air in order to achieve energy
maximum.
After the mixture of fuel burned by fireworks, the
time required for fire to spread in the room
fuel. Therefore there will be a slight delay between the start
burning with the achievement of the maximum combustion pressure.
Thus, in order to obtain maximum output with the engine
combustion pressure reaches the highest point (about 100 after TDC),
the propagation of fire should be considered when determining
ignition timing.
Because requesting a time for propagation of fire, the
mixture of fuel - the air must have been burned before TDC. When
start of a burning mixture of fuel and air is
called the ignition time. So that when the ignition
can be adjusted with the speed, engine load and other
equipment needed to change (forward or rewind)
during ignition. One of them is to use
vacuum advancer and governor for the ignition advancer conventional.
In a motorcycle is usually called the (Automatic Timing Unit). ATU will
set during furtherance ignition. In the motorcycle with the system
conventional ignition (using platinum) ATU regulated
mechanics while the electronic ignition system ATU regulated
electronic. More explanation about ATU discussed in part I
(Type System ignition On Motorcycles).
When the ignition time moved forward too far, the maximum combustion pressure is achieved before 10o
after TDC. Because the pressure in the cylinder will become higher
from the burning time with the right mix for burning
air fuel that occurs spontaneously and ultimately will occur
knocking or detonation.
Knocking is an explosion that resulted in a wave
a surprise because the wage-pounding sound pressure and a large
going strong at the end of the burning. Knocking over will
cause the valves, spark plugs and piston burn. When the ignition
too forward can also cause the engine temperature becomes too high.
Meanwhile, when the ignition time retard too far then the maximum combustion pressure occurs will
after 10o after TDC (at which the piston has come down far enough). When
compared with the ignition timing is correct, then the pressure in the cylinder is rather low so that the engine output
decreased, and the waste of fuel and other will occurred. Ignition when the correct pressure can produce
optimal combustion.

2009-09-05T16:46:00.000-07:00

ELECTRONIC FUEL INJECTION (EFI)

Type of fuel system is a step injection of innovation that are being developed to be applied to the bicycle machine. This type of injection is already applied to the bicycle in a limited number of machines in the 1980s, starting with a mechanical injection system evolved into the electronic injection system. Mechanical injection system is also called continuous injection system (K-Jetronic) because the injector is continuously sprayed into each inlet (intake manifolds). While electronic injection system or better known as Electronic Fuel Injection (EFI), the volume and time Injenction done electronically. EFI System sometimes referred to as EFI (Electronic Gasoline Injection), EPI (Electronic Gasoline Injection), PGM-FI (Programmed Fuel Injenction) and Engine Management. The use of fuel injection systems on the bike commercial engine in Indonesia has started to be developed. One example is on one type of production Astra Honda engine, which is the Supra X 125. Term EFI system on the Honda PGM-FI (Programmed Fuel Injection) or the fuel system has been programmed. In general, the replacement of conventional fuel systems to the EFI system is intended to increase performance and engine power a better, more stable acceletation at every turn the engine, fuel consumption is economical, and produce emissions that the exhaust gases so that less can be more friendly to the environment. In addition, the excess of the engine with fuel injection type is more easily turned on at the moment not been used, and not affected at temperatures in the environment.

1. EFI System Working Principle
The term fuel injection system (EFI) can be described as a distributed system using a fuel pump at a certain pressure to mix with the incoming air into the engine. On EFI system with a gasoline engine, in general, fuel injection process occurs at the end of the intake manifold / manifold before the inlet valve in. (valve / spigot entry). At the inlet valve is open, is the suction stroke, the incoming air into the engine is mixed with fuel. Ideally, EFI systems must be able to supply some fuel that is sprayed in order to mix with air in a ratio appropriate to mix spin conditions and engine load, engine temperature conditions and atmospheric temperature at the time. The system must be able to supply the amount of fuel varied, so that changes in engine operating conditions can be achieved with engine performance remains optimal.

2. Basic Construction EFI System
In general, construction EFI system can be divided into three sections / main systems, namely: a) fuel system (fuel system), b) electronic control systems (electronic control system), and c) induction system / influent (water induction system ). These three main systems will be discussed individually below. The number of components found in different bias EFI system on each type of bike engines. The more complete EFI system components are used, of course EFI system will work better
so could result in engine performance is more optimal as well. With more complete components EFI systems, then the necessary correction settings to set the ratio of fuel and air in accordance with the engine working conditions will be more perfect. The figure below shows an example of the circuit scheme of Yamaha EFI system GTS1000 and placement of components on the EFI system Honda Supra X 125.

Picture 1. Schematic circuit GTS1000 Yamaha EFI system

Description number in the image:
1. Fuel rail / delivery pipe
2. Pressure regulator
3. Injector
4. Air box
5. Water temperature sensor
6. Throttle body butterfly
7. Fast idle system
8. Throttle position sensor
9. Engine coolant temperature sensor
10. Crankshaft position sensor
11. Camshaft position sensor
12. Oxygen (lambda) sensor
13. Catalytic converter
14. Intake air pressure sensor
15. ECU (Electronic control unit)
16. Ignition coil
17. Atmospheric Pressure Sensor

HOW WORK OF FOUR STROKE ENGINE

2009-09-05T16:27:00.001-07:00

HOW WORK OF FOUR STROKE ENGINE

Suction Stroke
Process:
1. Intake valve open, exhaust valve is closed
2. Piston moves from TDC to BDC
When the piston moves down, pressure combustion become empty (vacuum). Differences in air pressure outside the high pressure with the empty, causing the air flow and will be mixed with gas. Further gas inflow through the valve flow into the open space in
cylinder.

Compression Stroke
Process:
1. Intake valve and exhaust valve is closed
2. Piston moves from BDC to TDC
After filling, the piston has reached BDC back move towards TDC, this room over the piston, so that the mixture of air-fuel to be solid, pressure and temperature rise. Pressure increased approximately threefold. Few degrees before the piston reaches TDC going sprinkling spark plug from the power to burn a mixture of air-fuel. When the piston moves upwards, the valve is closed and the inflow at the same time dispose of the valve is also closed. Mixed burning room until compress TDC, so with so quickly and easily start a burn.

Explosion Stroke
Process:
1. Intake valve and exhaust is closed
2. Piston moves from BDC to TDC
Mix burnt very quickly, the process of burning the gas mixture expands and exploted, energy and heat generated by fuel combustion in space to cause pressure and pressure all the way combustion piston pushing down (BDC), next play the crankshaft through the connecting rod

Exhaust Stroke
Process:
1. Intake valve is close
2. Exhaust valve is open
3. Piston moves from BDC to TDC
Before the piston moves down to the BDC, the valve opens and spending the rest of the combustion gas flow out. When the piston starts rising from the BDC, piston pushing the rest of the combustion gas that is still left out through the waste valve
channel and dispose on the air. Before piston starts to come down from TDC exhaust valve is closed and the mixture starts flowing into the cylinder.

HOW TO TWO STROKE ENGINE WORK

2009-09-05T16:25:00.000-07:00

HOW TO TWO STROKE ENGINE WORK

Step Suction And Compression
1. The first half lap, or 180o
2. Piston moves from BDC to TDC

Under the piston
When the piston moves upwards towards space TDC will crank up and make space vacuum. Intake hole open. With This difference in pressure, the outside air can flow and mixed with fuel in the carburettor into the next room crank (called a step suction
or the crank space).

At The Top Of The Piston
Other income and hole-hole is closed by piston, so that the process of going step compression here. With the movement of the piston to the top urged the new gas that had been previously, create a temperature and pressure of gas increases. Some degrees before the piston reaches TDC plug will spattering on interest and start a fire to burn the mixture gas before (this step is called step compression)

Step Business And Discard
1. After a lap or two to 360o
2. Piston moves from BDC to TDC

At the top of the piston
When the piston reaches TDC a fresh gas mixture compress switched by spark plugs. Gas is burned cause an explosion that produces energy so that the piston pushing play crankshaft through the connecting rod when the piston moves down the BDC (the business). Few degrees after the piston moves to the hole BDC un open by the piston, gas-gas used to exit dispose of through the channel (step discard)

Under the piston
Some degree after the next channel un opened, then Rinse channel (channel transfer) start open by piston edge. When the piston to open the hole immediately transfer the disposal has been began. Gas new under the piston push, the mixture compress that is flowing through the channel Rinse the top of the room while helping fuel gas used to push out (this process is called flushing)

2009-09-05T16:16:00.001-07:00

CRANKSHAFT

Crankshaft function is to convert the piston motion into movement of the play (machinery) and forward coupling force (moment of force) produced a motor to power the switching device to the wheel. Crankshaft bearings are generally held in a fixed glide on the crank. Crankshaft bearings are usually called the main bearings.
Type crankshaft used on motorcycle engines are:
1. Type of built-up used in small type motor has a cylinder number one or two
The burden of work on the crankshaft is:
- Load torque (torque)
- Load curved (bent)
- Load centrifugal
2. Type of "one piece", is used in large type motor that has a lot of cylinders.

Picture 1. Type crankshaft One Piece

For a single-cylinder motor in crankshaft axis (usually in front of the crank pen) is placed as a counter-balancing the weight of the crank cycle when the piston under pressure of work. But many of the motor cylinder, a pen attached to each other crankshaft balance. Weight of counter weight approximately equal to the weight of the piston rod at the crank plus the weight entirely. Thus the crankshaft can be balanced, so it can spin more evenly and the vibrations of the crank to be lost. With weight, This counter causes pressure on the bearings is reduced and evenly distributed.
Crankshaft and connecting rod is to change the translational motion of the piston to move around. These two parts are always suffering from stress and strain are very large. Because it must be made of special materials and the right size. Is at rest and the rotating crankshaft always equilibrium (balance). Hardened bearing surface and should be smooth to reduce wear.
Rotates with the crankshaft is supported by several major bearing fruit. The number of bearings depends on the number of cylinders. Four-cylinder motor has 3 bearings and six-cylinder motor has 4 main bearings. These bearings are made of steel mixed with some babbit or with aluminum. Connecting rod and crankshaft are made from cast iron. Installation of the connecting rod crankshaft bearings coated with wear.

2009-09-05T16:11:00.000-07:00

CONSTANTLY VARIABLE TRANSMISSION (CVT)

Automatic transmission is generally used in a scooter type motorcycle (scooter). Used transmission automatic transmissions "V" belt or known as CVT (Constantly Variable Transmission). CVT is an automatic transmission that uses belts to get the ratio varies.

Picture 1. Construction CVT type automatic transmission

As shown in the picture above consists of the CVT transmission; mace two connected by a belt (belt), a clutch centrifugal (6) to connect to a rear-wheel drive when the gas throttle in the open, and a transmission gear to reduce speed (reduce) rounds. Pulley activator / pulley centrifugal drive unit (1) tied to the end of the crankshaft; act as a speed control based on centrifugal style. Driven pulley (5) rotates in main bearings (input shaft) transmission. The center of the clutch centrifugal (6) attached / paired with the mace (5) and go round with the mace. Drum clutch (7) are on the main axis of flow (input shaft) and will rotate the shaft when a force from the clutch.
Both mace each separated into two parts, with half the parts are made permanent and the other half can be moved closer or away from the direction of the axis. At the time the machine is not spinning, crack activator mace (1) is at maximum position and the gap driven mace (5) is at minimum position. In Figure 2. below can be seen that movement mace (2) controlled by a roller movement (number 7 in figure 2. The function is similar to roller pressure on the clutch plate centrifugal. When the engine rev up, the roller will
thrown to the outside and encourage the shift biased mace a silent approach, so the gap will be narrowed Pulley.

Picture 2. Position and how to work mace

1. Crankshaft Edge
2. Pulley movers
3. Part mace could drive shifts
4. Belt (belt)
5. Pulley is mobilized
6. Rear axle
7. Roller
When the gap approached mace, it will push the belt in the direction
out. This will make mace (2) it rotates with a larger diameter. After the belt can not be stretched again, then the belt will continue the rotation of the mace (2) to pulley driven (5). If the force of the mace (2) push outward belt is greater than the spring pressure holding the mace which
driven (5), the mace (5) will be depressed against the spring, so the belt will rotate with a smaller diameter. Motorcycle speed is the same now as in high gear for manual transmission (see illustration image section C 7:18). If the engine speed decreases, mace drive roller (7) will shift down again and cause the mace could drive shift apart.
Simultaneously the spring pressure on the mace (5) promoting the mace that bias is shifted from the mace, so the belt rotates with a larger diameter at the rear and part of smaller diameter at the front part of. Motorcycle speed is the same now as in low gear for manual transmission

2009-09-05T16:09:00.000-07:00

Valve Desmodromic (Ducati Desmosedici)

In the traditional spring valve system, valve opens
driven by the camshaft (or rocker arm I also moved
by camshaft lobe and the position of the piston, when the piston spring ride
/ Spring close the valve so that it is, however feebleness
is the spring can not compensate if the RPM has been reached
high, so that when the valve was not closing, it is punched
by piston, this valve can lead to despair.
To overcome that, in a system that is developed
Pneumatic valve, with valve desmodromic, the Pneumatic
valve, valve closed with a high pressure gas. Gas used
Nitrogen is, as it is not so sensitive to temperature
compared to oxygen. Pressure and provided approximately 100 psi.
Because the pressure is almost constant so that the weaknesses per
tend to go. Application of Pneumatic this charge is used in the circuit and
can not be applied to the street bike. Pressure in each valve
on each cylinder must be the same. If not, one of the cylinder valve is
can return by punched piston.
Producing in desmodromic valve system is very expensive
for mass produced, so this system is only used by the
Ducati.

2009-09-05T15:59:00.000-07:00

ELECTRONIC CONTROL AND FUNCTION

1. ECU (Electronic Control Unit)

ECU / ECM; receive and count all the information / data received from each sensor signal is in the machine. The information obtained from sensors such as the form of information on air temperature, engine oil temperature, cooling water temperature, pressure, or the amount of incoming air, throttle valve position / gas valve, turn the engine, crankshaft position, and other information. In general, work on the voltage sensor between 0 volts to 5 volts. Furthermore ECU / ECM uses the information that has been processed to calculate and determine when (timing) and duration of injector work / fuel sprayed by sending voltage to the solenoid injector. On some machines that have been more perfect, in addition to control the injectors, ECU / ECM can also control the system
ignition.

2. MAP (Manifold Absolute Pressure) Sensor

MAP (Manifold absolute pressure) sensor; a signal to the ECU in the form of information (detection) of air pressure into the intake manifold. In addition to MAP sensor type, the detection of air into the intake manifold can be in the form of number and weight of air. If the amount of air is detected, the sensor is called the water flow meter, whereas if the weight of the air are detected, the sensor is called the water mass sensor.

Picture 1. Examples of sensor placement positions are merged (built in) with the throttle body

3. IAT (Engine Air Temperature) Sensor

IAT (Engine water temperature) sensor; a signal to the ECU in the form of information (detection) of the air temperature into the intake manifold. Voltage reference / 5 Volt supply from the ECU will then be turned into a voltage signal whose value is influenced by air temperature.

4. TP (Throttle Position) Sensor

TP (Throttle Position) sensor; a signal to the ECU in the form of information (detection) of the throttle valve position / gas valve. Newer generation of this sensor does not only consist of contacts that detect the position idel and full load position, but was a potentiometer (variable resistor) and can provide a signal to the ECU in each engine load condition. Construction of the last generation of the gas valve position sensor is full electronic, because that move the gas valve is controlled by electronic ECU wirelessly connected to the gas pedal. This latest generation allows controlling emissions / cleaner exhaust gas because the gas pedal is moved only to
voltage signal to the ECU and the opening and closing the gas valve was also performed by the ECU electronically.

5. Engine Oil Temperature Sensor

Engine oil temperature sensor; a signal to the ECU in the form of information (detection) of engine oil temperature.

6. Bank Angle Sensor

Bank angle sensor; an angle sensor. In the motorcycle EFI systems are usually equipped with a bank angle sensor which aims to safety when the vehicle fell with a minimum angle of about 55^o.

Picture 2. Bank angle sensor and the position of the motorcycle inclination angle

Signals or information sent by the bank angle sensor to the ECU when the motorcycle fell to the angle determined to make the ECU gave the command to turn off (to the OFF) injector, ignition coil, and fuel pump. Thus the motorbike burn chance if there is spilled fuel will spill small or because the ignition system and fuel system was immediately stopped, although still in the ignition ON position.

Figure 3. Bank angle sensor information to the ECU to the OFF injector, ignition coil, and the fuel pump when detected corner slope determined

Bank angle sensor will detect any angle motorcycle. If the angle is still below the specified limit, then the information sent to the ECU not to make the ECU OFF to the three components in above. What about the angle's motorcycle cornering / turning?

Figure 4. Bank angle sensor position when the motorcycle swerved and fell

If the motorcycle is running on curved position (although the slope is more than 55^o), the ECU does not turn-OFF these three components. At the moment there cornering force that makes centrifugal angle of the pendulum in the bank angle sensor is not equal to the slope of the motorcycle. Thus, although the angle of motorcycles has reached 55^o, but in reality the signals sent to the ECU still indicates that the slope angle is still below 55^o, so the ECU does not OFF the third component. In addition to sensors on the other there are sensors used on EFI systems, such as the camshaft position sensor / axis rooftop, (camshaft position sensor) to detect the position of the shaft so that the peak could ignition known, crankshaft position sensor (crankshaft position sensor) to detect crankshaft rotation, cooling water sensor (water temperature sensor) to detect the engine cooling water and other sensors. However, the motorcycle EFI systems are still simple, not all the sensors installed.

2009-09-05T14:49:00.000-07:00

CHAMSHAFT

Camshaft is a tool used in the machine to run the poppet valve. It consists of a cylindrical rod. Cam opens the valve by pressing it, or with other assistance mechanisms, as they spin. The relationship between the rotation of camshaft to crankshaft rotation is very important. Since the valves control the flow of fuel input and expenditure, they must be opened and closed at the time appropriate for the piston step. For this reason, camshaft connected to the crankshaft directly (through a gear mechanism) or indirectly through a chain called "chain of time".

Picture 1. Camshaft

In a two-stroke engine that uses a camshaft, each valve opens once for each rotation of the crankshaft in the engine, the camshaft rotates at the same speed with the crankshaft. In a four-stroke engine valves will open a half less, therefore crankshaft two full turns occur in each rotation camshaft.
Sliding friction between the face cam follower depends on the amount of friction. To reduce wear, the cam and the follower has a hard surface, and the modern lubricants contain special ingredients to reduce sliding friction. Lobe of the camshaft are usually tapered, resulting in a follower or valve lifter rotates slightly in each pressure, and a worn components. Usually the face of the cam and follower is designed to wear together, so when one has been worn away so they should be replaced to prevent wear excessive.

CAM CHAIN AND TENSIONER

2009-09-05T14:47:00.000-07:00

CAM CHAIN AND TENSIONER

Intake valve and exhaust valve on motorcycles opened and closed in accordance with the process that occurs in the engine. The process that occurs in the motor fuel is determined by the step-step piston where the piston is determined by the crankshaft rotation. On the other hand crankshaft rotation is also influenced by processes that occur in the engine. Thus there is a reciprocal relationship between the crankshaft rotation and the process that occurs in the engine
In order for the opening of the valves in accordance with the process that occurs in the engine then the mechanism of opening and closing valves are driven by the crankshaft rotation. There are three kinds of valve drive mechanism, namely the driving rod, gears, and chains.
Motorcycle camshaft chain must be fitted with sufficient voltage. Camshaft chain that is too tight will cause swish especially at high rotation while the camshaft chain is too loose will cause noise. To set it should be noted first adjuster mechanism. How to setup a chain camshaft for each motorcycle is not the same. If the chain tension varies, will affect the spin machine, valve timing or ignition time will vary too.
To produce a standard chain setting, there are 3 types of tuning the chain:
1. Type setting manually
This type of setup requires periodic tone. How to setup with the push rod suppressor
2. Automatic adjustment type
If the chain has sagging, it will automatically bar pressure will suppress chain guide (rubber), because of a stressor. Rubber will be curved, and will push the chain
so that the chain under stress. Further pressure rod-shaped rachet to move the same direction and can not be re –
3. Type semi-automatic
Chain tension is automatically set itself, if the bolt lock is released, so the rod will enter the pressure because of pressure per

Figure 1. Cam Chain

CARBURETTOR

2009-09-05T14:40:00.001-07:00

CARBURETTOR

Function from carburettor :
a. Arranging mixture comparison of fuel and air
b. Altering the mixture become fog
c. Adding or lessening the mixture amount according to
with engine burden and speed fluctuating.
Since a engine animated until the the engine walk
at stable condition of mixture comparison experience of always change. mixture Comparison estimate with circumstance
machine operational have been explained at previous shares, that is part of
C. To make a change comparison as according to condition
the engine hence there are some system in carburettor. Way of
job of each system in carburettor will be studied at shares
hereinafter
Principle Work Carburettor
Principal work carburetor of pursuant to physics laws like:
Qontinuitas And Bernauli. If an fluid emit a stream of through
an tube, hence to the number of fluid or charge stream ( Q) is
Q = A. V = Constant
Where: Q = Charge stream ( m3/ second)
A = Wide Area ( m2)
V = Stream Speed ( m/second)
Sum up pressure ( P) of as long as stream tube which
diameter is of equal also will always remain to. If there are shares
from tube which diameter is minimized hence can
obtained by conclusion that if/when air and gasoline mixture
emiting a stream of through an wide tube of area.
minimizing (diameter is minimized) hence speed will
increasing while his pressure will be downhill.
Principle punish above the weared to conduct gasoline
from carburettor float space minimizedly an
diameter in carburettor. or Diameter minimizing
this channel stricture is referred as by venturi.
Can be taken by conclusion that gasoline will be sipped and go out through
venturi in the form of small item because that moment
air speed in higher venturi