User Account

All Pages

Determine maximum speed

Assignment Help Mechanical Engineering
Reference no: EM13867104

A car engine has 5 main crankshaft bearings and runs at a maximum of 6,500 rev min-1at a working temperature of 100 °C. The engine uses an SAE 10W40 grade oil. Other data are given below. From a design point of view, one worst case scenario is a cold start in a mid European winter at -20 °C. Use Petrov's equation to determine the power absorbed by the main bearings at normal running conditions. Then, assuming the engine could be started determine what maximum speed it could run at in the coldest conditions before it warmed up, neglecting all other losses, if the engine could deliver 60 kW of power. Parameters:

  • Journal diameter = 46.0 mm
  • Bearing axial length = 28.0 mm
  • Radial clearance = 0.035 mm
  • Oil density (assumed constant) = 890.0 kg m-3

Reference no: EM13867104

Questions Cloud

Identify aspect of current configuration that could improved : Identify one aspect of the current configuration that could be improved. Explain why have you chosen that aspect and suggest ways in which it could be improved.
A standard product known as px standard quantity : The Following Data apply to the production of a standard product known as PX standard quantity 1000 kg materials M Standard price per Kg Rs-2.40 During the Certain Month 1150 kg of M was actually used.
Define and explain capacity of a system : Define and explain the following terms: System; Process flow analysis; Bottleneck; BPR; Throughput time; Capacity of a system; Process flowcharting; Process thinking
Identify the starting year and the population at that time : What are the likelihood of your results? Would it be expected that the percent growth rate would stay constant over such long periods and Write it up in a neat paper with the graph copied and pasted into the paper. If you got the population from a ..
Determine maximum speed : Then, assuming the engine could be started determine what maximum speed it could run at in the coldest conditions before it warmed up, neglecting all other losses, if the engine could deliver 60 kW of power. Parameters:
Do you feel ethics were compromised in this situation : Write a 1,050- to 1,400-word paper that answers the following questions as they apply to each scenario. Do you feel ethics were compromised in this situation
What is a monohybrid cross? : What is a monohybrid cross?
Thickness for a unit working stress : A cast-iron cylinder of 300mm bore carries a pressure of 30 Newtons per square millimetre; what should be its thickness for a unit working stress of 25 newtons per square millimetre?
Power system-voltage changes : How is per unit impedance affected in a power system when the voltage changes, if at all?

Reviews

Write a Review

Mechanical Engineering Questions & Answers

  Clculate work per unit mass by incorporating an ideal

you are to design an air compressor with an inlet pressure of 100 kpa an inlet temperature of 300 k and anexit pressure

  Heat is transferred to the water such that the temperature

a 0.3-m3 rigid tank is filled with saturated liquid water at 200oc. a valve at the bottom of the tank is opened and

  I the rod is 4 long when the springs are compressed 05

the rod is made of a-36 steel and has a diameter of 0.25 . if the rod is 4 long when the springs are compressed 0.5 .

  Fluid is moving between two plates the top plate

Fluid is moving between two plates the top plate is moving with a velocity V, the distance between the plates is h, and the flow is completely horizontal; select the appropriate boundary condition of the viscous flow.

  Refrigerant enters the condenser of residential heat pump

Refrigerant-134a enters the condenser of a residential heat pump at 900 kPa and 40°C at a rate of 0.02 kg/s and leaves at 900 kPa as a saturated liquid. If the compressor consumes 1.2kW of power, determine (a) the COP of the heat pump and (b) the rat..

  Determine the maximum normal stress

Determine the maximum normal stress in a 300-mm diameter basketball that has a 2-mm wall thickness after it has been inflated to a pressure of.

  Estimate the potential problems with a plant effluent that

estimate the potential problems with a plant effluent that contains a pesticide with an lc50 for fish of 0.01 mgl at

  The local atmospheric pressure and acceleration due to

0.1kg of water is contained within a piston-cylinder assembly at 100 degree c. the piston is free to move smoothly in

  Many ventilation systems maintain a slightly higher pressure

Many ventilation systems maintain a slightly higher pressure in a building than the outside pressure. If the pressure in your room is 0.1 psi than the outside pressure will you be able to open the door? How much is this force compared to your weight?..

  How much mass has entered through the valve

An insulated piston cylinder assembly is attached through a valve to a source of air which is flowing through a pipe. initially, inside the cylinder the volume is 0.1 m^3, the temperature is 40C and the pressure is 1 bar. The valve is then opened to ..

  Calculate the radius of a vanadium atom given that v has a

calculate the radius of a vanadium atom given that v has a bcc crystal structure a density of 5.96gcm3 and an atomic

  A cylindrical steel pressure vessel with mean diameter

A cylindrical steel pressure vessel with mean diameter 1.5 m

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd