Thermodynamics - Finding volume and clearance

In summary, an automobile engine operates an ideal Otto cycle with a bore diameter of 10 cm and a displacement volume of 1925 cm3 and a stroke of 24.5 cm. The mass of air per cylinder is 0.0026 kg at an intake air temperature of 25 degrees Celsius and pressure of 101 kPa. To find Volume 1, Volume 2, and clearance, one can use the density of air at the given temperature and pressure to calculate the volume. The displacement volume of 1925 cm3 refers to the change in volume during the cycle.
  • #1
jacko113
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an automobile engine operates an ideal otto cycle. Bore diameter of 10 cm and displacement volume of 1925 cm3 and stroke of 24.5 cm

mass of air per cylinder is 0.0026 kg with a temperature and pressure of intake air of 25 degrees celsius and 101 kPa.

Is this enough to find Volume 1, volume 2 , and or clearance?

if so how?

Im not asking for a solution , maybe just formulas or steps on solving it.
 
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  • #2


Welcome to Physics Forums.

If you look up the density of air at the stated temperature and pressure, you should be able to calculate the volume.

The 1925 cm3 refers to the change in volume during the cycle.
 

Related to Thermodynamics - Finding volume and clearance

1. What is thermodynamics?

Thermodynamics is the branch of physics that deals with the relationship between heat and other forms of energy, and how energy is transferred between systems.

2. How do you find volume using thermodynamics?

Volume can be found using the ideal gas law, which states that the volume of a gas is directly proportional to its temperature and inversely proportional to its pressure. This relationship can be expressed mathematically as V = nRT/P, where V is the volume, n is the number of moles of gas, R is the gas constant, T is the temperature in Kelvin, and P is the pressure.

3. What is clearance in thermodynamics?

Clearance in thermodynamics refers to the volume of gas remaining in a cylinder at the end of the exhaust stroke in an internal combustion engine. It is usually expressed as a percentage of the total cylinder volume and is an important factor in determining engine efficiency.

4. How is clearance calculated?

Clearance can be calculated using the formula: clearance = (1 - (Vc/Vd)) x 100%, where Vc is the clearance volume and Vd is the displacement volume. The clearance volume can be found by subtracting the swept volume (volume occupied by the piston) from the total cylinder volume.

5. What factors affect clearance in an engine?

The clearance in an engine can be affected by several factors, including the size and shape of the combustion chamber, the position of the valves, the stroke length of the piston, and the design of the piston rings. These factors can be adjusted to optimize the clearance for better engine performance.

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