WHAT WOULD HAPPEN IF YOU PUT JET FUEL IN YOUR CAR? HERE IS THE ANSWER !

Jet fuel more precisely known as “Jet-A”which can be understood as lead-free kerosene, much closer in structure to diesel fuel. Due to this characteristics,it can be used to fuel Turbine Engines as well as the Compression Engines. However, due to lack of lubrication properties, jet fuel will damage the engine.

  

The second factor that should be considered is that jet fuel has high heat content but car engines are not designed for it. Jet fuel does not vaporize very easily which creates problem in ignition in case of spark ignition engine.

It will be similar case of using diesel in a petrol engine. Some engines might endure this combination of fuels for some time, followed by misfires and eventually coming to a halt. Due to heavy nature of the Jet fuel, it will damage the fuel pump and the engine at large.

According to Manuel Martinez-Sanchez, an aeronautics and astronautics professor at the Massachusetts Institute of Technology, the diesel engine might work using liquid Hydrogen. However, the temperature it requires is a staggering –432°F, hence the car engine would eventually freeze. Unfortunately, cars are not meant to go faster on Jet Fuel.

In conclusion, the car wouldn’t start in case of spark-ignition engines, wouldn’t run, and might catch fire. It might run for a small duration in case of diesel engines, but not without causing long-term damage.

IMPORTANT TERMS OF MEASUREMENT PROCESS EXPLAINED !!

1.Sensitivity 

It should be noted that sensitivity is a term associated with the measuring equipment whereas accuracy and precision are association with measuring process. Sensitivity means the ability of a measuring device to detect small differences in a quantity being measured. For instance if a very small change in voltage applied to 2 voltmeters results in a perceptible change in the indication of one instrument and not in the other. Then the former (A0 is send to be more sensitive. Numerically it can be determined in this way for example if on a dial indicator the scale spacing is 1.0 mm and the scale division value is 0.01 mm then sensitivity =100. it is also called amplification factor or gearing ratio.

2.Readability

Readability refers to the case with which the readings of a measuring instrument can be read. It is the susceptibility of a measuring device to have its indication converted into more meaningful number. Fine and widely spaced graduation lines ordinarily improve the readability. If the graduation lines are very finely spaced the scale will be more readable by using the microscope however with naked eye the readability will be poor.

In order to make micrometer more readable they are provided with vernier scale. It can also be improve by using magnifying devices.

3.Repeatability

It is the ability of the measuring instrument to repeat the same results when measurement are

carried out

• By same observer
• With the same instrument
• Under the same conditions
• Without any change in location
• Without change in the method of measurement
• And the measurement is carried out in short interval of time.

It may be expressed quantitatively in terms of dispersion of the results.

4. Reproducibility

Reproducibility is the consistency of pattern of variation in measurement i.e closeness of the agreement between the results of measurement of the same quantity when individual measurement are carried out

1. By different observer
2. By different methods
3. Using different instruments
4. Under different condition, location and times.

It may also be expressed quantitatively in terms of dispersion of the results.

5.Calibration

• The calibration of any measuring instrument is necessary for the sake of accruing of measurement process. It is the process of framing the scale of the instrument by applying some standard (known) signals calibration is a pre-measurement process generally carried out by manufactures.
• It is carried out by making adjustment such that the read out device produces zero output for zero measured input similarly it should display output equipment to the known measured input near the full scale input value.
• If accuracy is to be maintained the instrument must be checked and recalibration if necessary.
• As far as possible the calibration should be performed under similar environmental condition with the environment of actual measurement

6.Magnification

Magnification means increasing the magnitude of output signal of measuring instrument many times to make it more readable. The degree of magnification should bear some relation to the accuracy of measurement desired and should not be larger than necessary. Generally the greater the magnification the smaller is the range of measurement.

FUEL INJECTOR IN PETROL ENGINE!! WHY ??

Now a days petrol engines are equipped with fuel injectors instead of carburetors which used to mix air and fuel and then send into combustion chamber.Why are we doing this and what is this technology known as,we will explore this in this post.

In petrol engines, air and fuel are mixed by carburetor and then sent into combustion chamber which is then ignited by spark plug.The problem with carburetor is that it is less efficient because it can not make mixture properly during varying driving conditions and at high altitudes.So,a technology was introduced that injects the fuel directly into combustion chamber like diesel engine and this mixture is ignited by spark plug.This technology is known as GASOLINE DIRECT INJECTION.

Working of Gasoline Direct Injection (GDI):

An engine equipped with GDI has ECU(Electronic Control Unit) and various sensors.These sensors in the engine keeps an eye on various conditions of the engine like engine speed, temperature, load, intake air, exhaust air etc.

 Based on all these sensors ECU calculates the fuel flow.There is a high pressure petrol/gasoline rail or line, which is connected with injector, so all the injectors have fuel at same pressure. These injectors put fuel directly into engine cylinder as and when instructed by the ECU.In GDI, the fuel injection of gasoline takes place directly in individual cylinders of the engine and not in a common intake manifold as in case of MPFI. This improves the engine efficiency as well as the performance. GDI is also known by many other names like DGCI, CGI etc.

Advantages of GDI:

1. The calculations done are very quick and direct injection into the cylinder makes the running of engine extremely efficient as compared with carburettor or MPFI.
2. GDI engines support Ultra Lean Burn technology in which the engine is fed with very little gasoline when the load on the engine is very low.This results in better fuel economy.
3. It results in complete combustion of fuel which results in low pollution and emissions.
4. Better acceleration.

Limitations of GDI:

1. Cost is slightly high as compared to carburetor vehicle.
2. Skilled person is required for maintenance as it contains sensors and ECU.