Calculate the volumetric efficiency when the piston speed

Assignment Help Mechanical Engineering
Reference no: EM13708148

A naturally-aspirated, direct-injection, four-stroke diesel engine has a total displacement volume of 10L, 125 mm bore and 16.3:1 compression ratio. The engine produces a maximum of 210 kW at 2100 RPM. Assuming that the intake air is at 45°C and 22.5 g/s of air flow into each cylinder:

a) Calculate the volume in each cylinder when the piston reaches TDC.

b) Calculate the volumetric efficiency when the piston speed is 9 m/s.

c) Identify a dynamic factor that reduces volumetric efficiency at high engine speeds. FULLY explain how and why the selected parameter affects the engine volumetric efficiency.

Reference no: EM13708148

Questions Cloud

Describe the failure pattern of a ductile material in shear : Describe the failure pattern of a ductile material in shear, and predict the failure pattern of a ductile mater material under torsion.
Fluid flow through a non-circular cross-section pipe : The pipe flow experiment deals with fluid flow through a non-circular cross-section “pipe”. Please explain, using supporting equations, HOW you would calculate the pressure loss during fluid flow between two points along the pipe.
A material has a strength coefficients : A material has a strength coefficients K = 100, 000 psi Assuming that a tensile-test specimen made from this material begins to neck at a true strain of 0.17, show that the ultimate tensile strength of this material is 62,400 psi.
How much energy in mev is produced from this event : In a particular fission event, a thermal neutron produces fission of a U-235 atom. For this particular event, the fission products Br-90 and Xe-143 are produced as well as 3 neutrons. How much energy in MeV is produced from this event?
Calculate the volumetric efficiency when the piston speed : A naturally-aspirated, direct-injection, four-stroke diesel engine has a total displacement volume of 10L, 125 mm bore and 16.3:1 compression ratio. The engine produces a maximum of 210 kW at 2100 RPM. Assuming that the intake air is at 45°C and 22...
Compute the energy equation flux of the gas : A specific point during the re-entry flight of the Space Shuttle has the following condition: Mach number of 15.93, static pressure of 20 Pa, and static temperature of 245 K. Assuming that air is a calorically perfect gas and that this condition is s..
Start with equation of state and substitute for temperature : An important concept in using CFD code to solve the Navier-Stokes equations is that the variables set that are solved for are the ones appearing in the time derivative terms. These are called conservative variables. An expression for pressure, P, in ..
Determine load that is necessary to produce such elongation : A cylindrical bar of a metal alloy of 1.5cm in diameter and 38cm in length is loaded in tension which produces an increase in length of 0.19cm. If its yield strength is 240 MPa, its tensile strength is 310 MPa and its elastic modulus is 110 GP, deter..
Derive the continuity equation from first principles : Derive the continuity equation from first principles using an infinitesimal control volume of rectangular shape and having dimensions (?x, ?y, ?z). Identify the net mass flow rate through each surface of this element as well as the rate at which the ..

Reviews

Write a Review

Mechanical Engineering Questions & Answers

  What is the velocity and rate of flow of the metal

What is the velocity and rate of flow of the metal into the mold? Is the flow turbulent or laminar? (Pure aluminum density ρ = 2.7 g/cm3).

  The roller radius is 250 mm and the output thickness is 22

a 14 mm diameter 50 mm long mild steel rod undergoes a stress test. a tensile force of 18800 n is applied and the rod

  Air undergoes an isentropic process from a pressure of 3

air undergoes an isentropic process from a pressure of 3 bar 20degc to a pressure of 1 bar. compute the final

  Determine the magnitude and coordinate direction angles of

if f1 110n f2 121n and f3 85n determine the magnitude and coordinate direction angles of the resultant couple

  Determine the resulting stress equations

Determine the resulting stress equations for σx, σy and τxy given the Airy's stress function ? = a1x^4 + a2(x^3)y + a3(x^2)(y^2) + a4x(y^3) + a5(y^4), where ai are constants. Also determine, if any, the restrictions between constants.

  It is desired to double the efficiency of a carrot heat

it is desired to double the efficiency of a carrot heat engine from 30 by raising its temperatureof heat addition while

  17 pound-mass of water fills a container whose volume is

1.7 pound-mass of water fills a container whose volume is 3.7ftsup3. the pressure in the container is 70 psia. how do

  One structure is made from a si3n4 plate which has a plane

one structure is made from a si3n4 plate which has a plane strain fracture toughness of 3.6 and is alternatively loaded

  Assuming there is a minimal cooling of the condensate

an engineer wishes to heat air for a shopping mall with 100000 kj of energy per hour. one option is to use steam

  Determine the heat transfer and work for both processes

2.2 lb of ammonia in a piston cylinder assembly undergoes two isothermal processes in series. The first process from an initial state where p1=120lbf/in^2 with a quality is 85% to a final state where the ammonia is saturated vapor. D

  With u in fts and y in ft a do you think this equation

water flows near a flat surface and soe measurments of the water velocity u parallel to the surface at different

  What is its temperature and quality

R134a rests in a compressed fluid can at 120psia, and a specific volume of 0.38ft3/lbm. What is its temperature and quality? Half of the mass is now vented off to the atmosphere. The can is allowed to exchange heat with the surroundings at 100°F unt..

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