Use of multicylinder engine, Other Engineering

USE OF MULTICYLINDER ENGINE

If, in a multi cylinder engine, power strokes are staggered, the limitation of flywheel can be overcome to a large extent. Torque diagram for 2 cylinder, 4 cylinder, 6 cylinder, and 8 cylinder engines are shows that it is seen that mean ratio of maximum to mean torque is about 8 in case of single cylinder engine, which is gradually reduced as the number of cylinders is increased and is about 1.1 in case of an 8-cylinder engine. This is the main reason why in case of automobiles, multi cylinder engines are employed in preference to single cylinder engines of bigger size.

COMPARISON OF SINGLE AND MULTILAYER ENGINES:

1.      Power output is more uniform in case of multilayer cylinder engines due to increases in frequency of power impulses with the increase in the number of cylinders.

2.      A multi cylinder engine of comparable size would have smaller cylinders, which means the greater surface to volume ratio leading to more cooling. Therefore higher compression ratios can be used without the occurrence of detonation.

3.      Due to lighter reciprocating components and smaller flywheel, accelerations response in case of a multi cylinder engine is quicker.

4.      As the number of cylinders increases, torsion vibrations become a problem.

5.      As the number of cylinder increases, mixture distribution in case of carburettor engines becomes difficult.

6.       With more number of cylinders, the cost of providing exactly duplicate components in various cylinders becomes excessive.

 

 

Posted Date: 7/21/2012 8:51:03 AM | Location : United States







Related Discussions:- Use of multicylinder engine, Assignment Help, Ask Question on Use of multicylinder engine, Get Answer, Expert's Help, Use of multicylinder engine Discussions

Write discussion on Use of multicylinder engine
Your posts are moderated
Related Questions
Q. Why is it desirable to design a casting to have directional solidification sweeping from the extremities of the mould to riser based on Chvorinov's rule? What would be an ideal

Q. Describe shell moulding process merits and demerits . Ans. Shell moulding process           Merits                                                   (i) Bett

Re-Heat Nozzles : If re-heat was fitted to an engine with a standard sized fixed area propelling nozzle, the expansion of gases caused by the use of re-heat would increase the

write drawback of linear array

Consider a 3-hp, 220-V, 1800-r/min separately excited dcmotor controlled by a single-phase fully controlled rectifierwith an ac source voltage of 230Vat 60Hz.Assume that the full-l


#questi1.) A house has 0.5 cm thick single-pane glass window 2m by 1.5m .The temperature is 20 degrees Celsius and the outside temperature is -20 degrees Celsius .If there is an ai

Replacement Analysis In the previous chapter we have compared various investment alternatives. Two scenarios were considered: single alternative and a set of mutually exclusive

what are the most short forms given to materials in plumbing

oilcois building a refinery to procduce four products diesel, gasoline