Explain the difference between si and ci engines, Mechanical Engineering

Assignment Help:

Difference between SI and CI engines

SI engine stands for spark ignition engine while CI engine stands for compression ignition engine.

SI engine works on the principle of working of the theoretical Otto cycle, while CI engine works on the principle of theoretical Diesel cycle.

In a SI engine, the fuel and air mixture is drawn into the cylinder during the suction stroke, while in a CI engine only pure air will be drawn during the suction stroke.

In a SI engine, the compression of the petrol and air mixture is less so that the heating of the mixture will be less than the ignition temperature of the fuel, where as in CI engine pure air will be compressed to very high pressure to attain a temperature greater the Ignition temperature of the diesel oil (higher compression ratio).

In a SI engine, the fuel-and-air mixture will be ignited by the spark plug, while in a CI engine the heat of the compressed air will auto ignite the diesel oil.

 


Related Discussions:- Explain the difference between si and ci engines

Kleins construction, Kleins construction fr 90 degree and 180 degree angle

Kleins construction fr 90 degree and 180 degree angle

Press tools, Difference between press forminig and hammer forming

Difference between press forminig and hammer forming

Induction heating, Induction Heating: Alternating current throughout i...

Induction Heating: Alternating current throughout induction coil adjacent the part to be treated induces eddy current via the part that is so heated. The benefit of such heati

CIM, CIM in architecture?

CIM in architecture?

Find the component of force on the inclined plane, Find the component of fo...

Find the component of force on the inclined plane: A small block of weight 300N is placed on the inclined plane, which makes an angle 60° with the horizontal. Find the compone

Vacuum tube oscillator, i am try to make a vacuum tube oscillator for a lar...

i am try to make a vacuum tube oscillator for a larger project but i need help where to find the supplies for it where can i find them

Matlab question please help me, The salary calculation method for employees...

The salary calculation method for employees of a company is as follows: (1) If the number of working hours exceeds 120 hours, an additional 15% will be issued for the excess part;

Thermodynamics, show that energy is property of system

show that energy is property of system

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd