✖Gap between Free Ends of Piston Ring is the gap to be kept between the free ends of a piston ring to aid in easy assembly over a piston.ⓘ Maximum Gap between Free Ends of Ring after Assembly [G]

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Formula

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Maximum Gap between Free Ends of Ring after Assembly

Formula

`"G" = 0.004*"D"_{"i"}`

Example

`"0.72mm"=0.004*"180mm"`

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Maximum Gap between Free Ends of Ring after Assembly Solution

STEP 0: Pre-Calculation Summary

Formula Used

Gap between Free Ends of Piston Ring = 0.004*Diameter of Cylinder Bore
G = 0.004*D_i
This formula uses 2 Variables

Variables Used

Gap between Free Ends of Piston Ring - (Measured in Meter) - Gap between Free Ends of Piston Ring is the gap to be kept between the free ends of a piston ring to aid in easy assembly over a piston.
Diameter of Cylinder Bore - (Measured in Meter) - Diameter of Cylinder Bore is the internal surface diameter of an engine cylinder.

STEP 1: Convert Input(s) to Base Unit

Diameter of Cylinder Bore: 180 Millimeter --> 0.18 Meter (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

G = 0.004*D_i --> 0.004*0.18

Evaluating ... ...

G = 0.00072

STEP 3: Convert Result to Output's Unit

0.00072 Meter -->0.72 Millimeter (Check conversion here)

FINAL ANSWER

0.72 Millimeter <-- Gap between Free Ends of Piston Ring

(Calculation completed in 00.004 seconds)

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Home » Physics » IC Engine » Design of IC Engine Components » Piston » Mechanical » Piston Rings » Maximum Gap between Free Ends of Ring after Assembly

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< 11 Piston Rings Calculators

Radial Width of Piston Ring

Go Radial Width of Piston Ring = Diameter of Cylinder Bore*sqrt(3*Allowable Radial Pressure on Piston Ring/Permissible Tensile Stress for Ring)

Length of Ring Section of Piston

Go Length of Ring Section of Piston = Number of Piston Rings*Axial Thickness of Piston Ring+(Number of Piston Rings-1)*Width of Ring Groove

Number of Piston Rings

Go Number of Piston Rings = Diameter of Cylinder Bore/(10*Minimum Axial Thickness of Piston Ring)

Minimum Axial Thickness of Piston Ring given Cylinder Inner Diameter

Go Axial Thickness of Piston Ring = Diameter of Cylinder Bore/(10*Number of Piston Rings)

Minimum Gap between Free Ends of Ring before Assembly

Go Gap between Free Ends of Piston Ring = 3.5*Radial Width of Piston Ring

Maximum Gap between Free Ends of Ring after Assembly

Go Gap between Free Ends of Piston Ring = 0.004*Diameter of Cylinder Bore

Minimum Gap between Free Ends of Ring after Assembly

Go Gap between Free Ends of Piston Ring = 0.002*Diameter of Cylinder Bore

Maximum Gap between Free Ends of Ring before Assembly

Go Gap between Free Ends of Piston Ring = 4*Radial Width of Piston Ring

Minimum Axial Thickness of Piston Ring given Radial Width of Ring

Go Axial Thickness of Piston Ring = 0.7*Radial Width of Piston Ring

Minimum Width of Ring Groove

Go Width of Ring Groove = 0.75*Axial Thickness of Piston Ring

Maximum Width of Top Land

Go Width of Top Land = 1.2*Thickness of Piston Head

< 18 Important Formulas of Piston Calculators

Maximum Bending Stress in Piston Pin

Go Maximum Bending Stress in Piston Pin = 4*Force Exerted on Piston*Diameter of Cylinder Bore*Outer Diameter of Piston Pin/(pi*(Outer Diameter of Piston Pin^4-Inner Diameter of Piston Pin^4))

Outer Diameter of Piston Pin

Go Outer Diameter of Piston Pin = pi*Diameter of Cylinder Bore^2*Maximum Gas Pressure Inside Cylinder/(4*Bearing Pressure of CrankPin Bush*Length of Piston Pin in Connecting Rod)

Length of Piston Skirt given Allowable Bearing Pressure

Go Length of Piston Skirt = Coefficient of Friction for Piston Skirt*pi*Diameter of Cylinder Bore*Maximum Gas Pressure Inside Cylinder/(4*Bearing Pressure for Piston Skirt)

Radial Width of Piston Ring

Go Radial Width of Piston Ring = Diameter of Cylinder Bore*sqrt(3*Allowable Radial Pressure on Piston Ring/Permissible Tensile Stress for Ring)

Side Thrust on Piston

Go Side Thrust on Piston = Coefficient of Friction for Piston Skirt*pi*Diameter of Cylinder Bore^2*Maximum Gas Pressure Inside Cylinder/4

Thickness of Piston Head According to Grashoff's Formula

Go Thickness of Piston Head = Diameter of Cylinder Bore*sqrt(3*Maximum Gas Pressure Inside Cylinder/(16*Bending Stress in Piston Head))

Maximum Gas Force on Piston Head

Go Force Exerted on Piston = pi*Diameter of Cylinder Bore^2*Maximum Gas Pressure Inside Cylinder/4

Permissible Bending Stress for Piston

Go Bending Stress in Piston Head = Ultimate Tensile Strength of Piston/Factor of Safety of Engine Piston

Number of Piston Rings

Go Number of Piston Rings = Diameter of Cylinder Bore/(10*Minimum Axial Thickness of Piston Ring)

Maximum Bending Moment on Piston Pin

Go Bending Moment = Force Exerted on Piston*Diameter of Cylinder Bore/8

Length of Piston Pin used in Connecting Rod

Go Length of Piston Pin in Connecting Rod = 0.45*Diameter of Cylinder Bore

Maximum Gap between Free Ends of Ring after Assembly

Go Gap between Free Ends of Piston Ring = 0.004*Diameter of Cylinder Bore

Maximum Gap between Free Ends of Ring before Assembly

Go Gap between Free Ends of Piston Ring = 4*Radial Width of Piston Ring

Inner Diameter of Piston Pin

Go Inner Diameter of Piston Pin = 0.6*Outer Diameter of Piston Pin

Thickness of Piston Head given Cylinder Inner Diameter

Go Thickness of Piston Head = 0.032*Diameter of Cylinder Bore+1.5

Minimum Length of Piston Skirt

Go Length of Piston Skirt = 0.65*Diameter of Cylinder Bore

Maximum Length of Piston Skirt

Go Length of Piston Skirt = 0.8*Diameter of Cylinder Bore

Radius of Piston Cup

Go Radius of Piston Cup = 0.7*Diameter of Cylinder Bore

Maximum Gap between Free Ends of Ring after Assembly Formula

Gap between Free Ends of Piston Ring = 0.004*Diameter of Cylinder Bore
G = 0.004*D_i

Guidelines for design of piston rings

Materials of Piston Rings are usually made of grey cast iron and in some cases, alloy cast iron. Grey cast iron has excellent wear resistance. It also retains the spring characteristic at high temperatures. In some cases, piston rings are chromium-plated to reduce wear.
(ii) Number of Piston Rings: There are no strict rules for deciding the number of compression rings. The number of compression rings in automobile and aircraft engines is usually between 3 to 4. In stationary diesel engines, 5 to 7 compression rings are used. The number of oil scraper rings is usually between 1 to 3.

How to Calculate Maximum Gap between Free Ends of Ring after Assembly?

Maximum Gap between Free Ends of Ring after Assembly calculator uses Gap between Free Ends of Piston Ring = 0.004*Diameter of Cylinder Bore to calculate the Gap between Free Ends of Piston Ring, Maximum Gap between Free Ends of Ring after Assembly is the maximum gap that should exist between the free ends of an assembled piston ring. Gap between Free Ends of Piston Ring is denoted by G symbol.

How to calculate Maximum Gap between Free Ends of Ring after Assembly using this online calculator? To use this online calculator for Maximum Gap between Free Ends of Ring after Assembly, enter Diameter of Cylinder Bore (D_i) and hit the calculate button. Here is how the Maximum Gap between Free Ends of Ring after Assembly calculation can be explained with given input values -> 720 = 0.004*0.18.

FAQ

What is Maximum Gap between Free Ends of Ring after Assembly?

Maximum Gap between Free Ends of Ring after Assembly is the maximum gap that should exist between the free ends of an assembled piston ring and is represented as G = 0.004*D_i or Gap between Free Ends of Piston Ring = 0.004*Diameter of Cylinder Bore. Diameter of Cylinder Bore is the internal surface diameter of an engine cylinder.

How to calculate Maximum Gap between Free Ends of Ring after Assembly?

Maximum Gap between Free Ends of Ring after Assembly is the maximum gap that should exist between the free ends of an assembled piston ring is calculated using Gap between Free Ends of Piston Ring = 0.004*Diameter of Cylinder Bore. To calculate Maximum Gap between Free Ends of Ring after Assembly, you need Diameter of Cylinder Bore (D_i). With our tool, you need to enter the respective value for Diameter of Cylinder Bore and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Gap between Free Ends of Piston Ring?

In this formula, Gap between Free Ends of Piston Ring uses Diameter of Cylinder Bore. We can use 4 other way(s) to calculate the same, which is/are as follows -

Gap between Free Ends of Piston Ring = 0.002*Diameter of Cylinder Bore
Gap between Free Ends of Piston Ring = 4*Radial Width of Piston Ring
Gap between Free Ends of Piston Ring = 3.5*Radial Width of Piston Ring
Gap between Free Ends of Piston Ring = 4*Radial Width of Piston Ring

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