Compression ratio and mean effective pressure, Mechanical Engineering

Assignment Help:

Compression Ratio:

It is calculated as shown below

2309_Compression Ratio and Mean Effective Pressure.png

Mean Effective Pressure (Pm  or Pmef):

Mean effective pressure is the hypothetical constant pressure that is assumed to be acting on the piston during its expansion stroke producing the same work output as from the actual cycle.

We can say that

2092_Compression Ratio and Mean Effective Pressure1.png

The constant depends on mechanism used to get the indicator diagram and has units bar/m.


Related Discussions:- Compression ratio and mean effective pressure

Determine the resultant of the loads, Determine the resultant of the loads:...

Determine the resultant of the loads: A system of loads acting on beam is shown in the figure given below. Determine the resultant of the loads. Sol.: Let R be resultant

Simple Mechanisms, I have an assignment on kinematic chains.I have to tell ...

I have an assignment on kinematic chains.I have to tell the type of chain whether it is locked,constrained or unconstrained?? I am facing problem in counting number of joints,pair

Fire dampers - air-conditioning guidelines, Clearly indicate fire dampers o...

Clearly indicate fire dampers on ducts penetrating fire rated partitions, equipment rooms, duct shafts, ceiling outlets, etc. Detail fire dampers on drawings if required. For

Stress plots, Problem:   The following machine component is loaded as s...

Problem:   The following machine component is loaded as shown.  It is fabricated from Al 6061-T6.   Determine the analytical solution to this problem and compare result

Steam generator load balancing, Q. Steam Generator Load Balancing? The ...

Q. Steam Generator Load Balancing? The pressure controller output is cascaded to individual stations, one for each boiler. These allow selective increase or decrease of the du

Construct a plain scale, Construct a plain scale: The distance between...

Construct a plain scale: The distance between Indore and Bhopal is 180 kilometer. It is represented on the map via 9 centimeter. Construct a plain scale for such map, illustra

Compressors, How can I construct a tyre pumping machine.

How can I construct a tyre pumping machine.

Determine force exerted by the jet, (a) Describe the terms "Fluid jet" & "V...

(a) Describe the terms "Fluid jet" & "Vane" in Fluid Machine. (b) What is impulse - momentum principal in analysis and design of turbo machines. What are the assumptions made

Calculate the maximum shear stress, The square cross sections A and B a...

The square cross sections A and B are shown in Fig Q1, the dimensions b = 80 mm, thickness t = 10 mm. A shear force V is applied at the cross section, calculate the maximum she

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