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

Forging, open die closed die

open die closed die

Law of superposition - mechanics, Law of superposition: When the two f...

Law of superposition: When the two forces are in equilibrium (equal, collinear and opposite), their resultant is zero and their combined action on rigid body is equivalent to

Introduction to welding processes, Welding is a material joining process us...

Welding is a material joining process used in making welds and a weld is a localised coalescence of metals or non metals produced either by heating the materials to suitable temper

Design study, how to produce a design that meets the specification given: B...

how to produce a design that meets the specification given: Beam Dimensions W, H and T, where H=2W and T=W/20 • Bolt Size D1 • Side Plate thickness T2 and width W2 • Cradle Plat

Determine the stress in steel rod, A steel rod of 3 cm diameters and 5 m lo...

A steel rod of 3 cm diameters and 5 m long is connected to two grips and the rod is maintained pull exerted when the temperature falls to 30 o C if (a) The ends do not yield, an

Refrigeration, In a steam jet refrigeration system, the ejector extracts 3....

In a steam jet refrigeration system, the ejector extracts 3.3 m3/s of saturated water vapor at a temperature of 7.2 °C from the flash chamber. The return water from the cooling coi

Assignment, AskTask 2 (3 questions) Material engineers should be conversant...

AskTask 2 (3 questions) Material engineers should be conversant of various materials, their properties, manufacturing process involved, environmental issues, monetary issues and mo

Explain the primitive instancing, Primitive Instancing In primitive ins...

Primitive Instancing In primitive instancing, the modeling system defines a set of primitive 3D solid shapes that are relevant to the application area. Primitive instances are

Pneumatic circuit design, 3. Design and draw a circuit using the cascade sy...

3. Design and draw a circuit using the cascade system to operate two cylinders (A and B) which, on the operation of a start valve, produces the sequence A – B + B – A+. The cylinde

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