Comparison of 2-stroke and 4-stroke engines, Other Engineering

Assignment Help:

COMPARISON OF 2-STROKE AND 4-STROKE ENGINES: Two-stroke engine possesses the following advantages over the four stroke type:

1.      Because of its valueless construction, the two-stroke engine is simpler, more compact, lighter and consequently cheaper to manufacture.

2.      Due to twice as many power strokes per revolution, compared to the four stroke type, it delivers smoother torque. However, at lower speeds, this may not happen due to poor scavenging which may give rise to 'four stroke' or irregular firing.

3.      The pet roil system of lubrication which has to be used in case of 2-stroke engines, is simpler.

  • However, the two-stroke engine has got certain disadvantages also.
  • The 'scavenging efficiency' of the two stroke engine is poor, it is not possible, it is not possible to completely purge the exhaust gases from the cylinder and fill it completely with the fresh intake mixture. This results in decreases volumetric efficiency.
  • There is greater tendency for the deposition of carbon on the exhaust ports, which further reduces the scavenging efficiency. This would mean that it completely with the fresh intake mixture. This results in decreased volumetric efficiency.
  • As there is one power stroke in one revolution for the deposition of carbon on the exhaust ports, which further has one power stroke in two revolutions. The cooling is comparatively more difficult. Thus, it has greater tendency to overheat.
  • As pet roil system of lubrication is not very efficient and it tends to the four stroke engine which has one power stroke in two revolutions, the cooling is comparatively more difficult. Thus, it has greater tendency to overheat.

 

 


Related Discussions:- Comparison of 2-stroke and 4-stroke engines

The decoupled dynamics, The longitudinal and lateral states of the decouple...

The longitudinal and lateral states of the decoupled linear dynamics are distinct sets of variables. They are conveniently remembered by the flight-control engineer by visualising

Diffusion, distingush between short range and long range diffusion

distingush between short range and long range diffusion

Commercial buildings - fire protection engineering, Commercial buildings - ...

Commercial buildings - fire protection engineering: The term 'commercial buildings' refers to any buildings that are not residential buildings and that do not fall under the m

Propeller shafts, PROPELLER SHAFTS Most modern engines, both reciprocat...

PROPELLER SHAFTS Most modern engines, both reciprocating and turbine, have flanged propeller shafts. Some of these flanges have integral internally threaded bushings that fit

Sizing, Q. What is the purpose of :          (i) Sizing,            ...

Q. What is the purpose of :          (i) Sizing,                  (ii) Coining operations in powder metallurgy,         (iii) Infiltration,           (iv) Impregnati

Mechanical engineering how it works , i''m doing a project and need to kno...

i''m doing a project and need to know from start how engineering is structure? like a tree starting from its root

Robotics, how to become robotics engneer

how to become robotics engneer

Financial management, which type of finanacing is appropriate to each firm

which type of finanacing is appropriate to each firm

Software engineering, what is differnce between need and requirement?

what is differnce between need and requirement?

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