Engine cycles, Other Engineering

Assignment Help:

ENGINE CYCLES

The two commonly used cycles on which the I.C. engines operate are:

1Otto cycle.         2 Diesel cycle.

1 OTTO CYCLE: theoretical Otto cycle is shown in the cycle was originally introduced by bean de Rocha's but Otto was the first to succeed in working an engine on this cycle. The cycle consists of two adiabatic and two constant volumes lines. At cylinder is full of air. The combustion takes place at constant volume, from (2) to (3) after which the air expends adiabatically from (3) to (4).

   Where r= compression ratio

                 Γ = ratio of specific heats.

The actual P-V diagram of the cycle differs slightly from the theoretical.

2 DIESEL CYCLE: Theoretical diesel cycle P-V diagram shows that the popular engine works on this cycle. This is similar to Otto cycle, except that the combustion here takes place at constant pressure. The air standard efficiency, η, of this cycle is given as:

                                             η=1-r1-γ/r (pγ-1/p-1)

Where               ρ= volume ratio at cut off= volume at (3)/volume at (1)

 

 


Related Discussions:- Engine cycles

Query about Finite Element Analysis assignment service , Hi, I require a s...

Hi, I require a service which involves finite element modelling on commercial software package "ABAQUS". I am personally not sure how to model this on ABAQUS and thats why I have

Enthalpy, What is the deference between enthalpy anne internal energy u

What is the deference between enthalpy anne internal energy u

Process Control, Specify the inner-loop gain such that the damping coeffici...

Specify the inner-loop gain such that the damping coefficient of the closed loop is equal to 0.4

OSCILLATION, How we can findout phase angle from oscilloscope?

How we can findout phase angle from oscilloscope?

What is Cash dividend , Cash dividend Companies mostly pay dividends in ...

Cash dividend Companies mostly pay dividends in cash. A company should have enough cash in its bank account when cash dividends are declared. If it does most have enough bank bal

Auto cad, Assignment Title: Die Press Assembly Drawing The objective of th...

Assignment Title: Die Press Assembly Drawing The objective of this assignment is to demonstrate the following concepts of design. • Extrude • Revolve • Fillet • Dimensioning • To

Maintenance Requirement Analysis, Ask questioA wire rope used as a crane ho...

Ask questioA wire rope used as a crane hoist rope has a mean life of 530 days. The wire rope predominantly fails in a wear-out mode caused by either corrosion, abrasive wear or fat

Changes in temperature and pressure-aircraft maintenance, Changes in temper...

Changes in temperature and pressure: The changes in temperature and pressure of the gases through a gas turbine engine are illustrated in Figure 1.5 The efficiency with which t

Describe the processes of a cdma system, Question: (a) Describe the spr...

Question: (a) Describe the spreading and dispreading processes of a CDMA system. (b) Autocorrelation properties are used to recover the signals correctly at the receiver. Ex

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