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Steam Lap at Admission and Cutoff Formula

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Steam Lap is the amount (or distance) that the steam side of the valve overlaps the port. Check FAQs

s = r \cdot (\sin (θ + α))

s - Steam Lap?r - Eccentricity or Throw of Eccentric?θ - Crank Angle?α - Angle of Advance of the Eccentric?

Steam Lap at Admission and Cutoff Example

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Here is how the Steam Lap at Admission and Cutoff equation looks like with Values.

Here is how the Steam Lap at Admission and Cutoff equation looks like with Units.

Here is how the Steam Lap at Admission and Cutoff equation looks like.

2.0002 = 2.7 \cdot (\sin (15.5 + 32.3))

2.0002mm = 2.7mm \cdot (\sin (15.5° + 32.3°))

2.0002 = 2.7 \cdot (\sin (15.5 + 32.3))

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Steam Lap at Admission and Cutoff Solution

Follow our step by step solution on how to calculate Steam Lap at Admission and Cutoff?

FIRST Step Consider the formula

s = r \cdot (\sin (θ + α))

Next Step Substitute values of Variables

∴

s = 2.7mm \cdot (\sin (15.5° + 32.3°))

Next Step Convert Units

∴

s = 0.0027m \cdot (\sin (0.2705rad + 0.5637rad))

Next Step Prepare to Evaluate

∴

s = 0.0027 \cdot (\sin (0.2705 + 0.5637))

Next Step Evaluate

∴

s = 0.00200017240997394m

Next Step Convert to Output's Unit

∴

s = 2.00017240997394mm

LAST Step Rounding Answer

∴

s = 2.0002mm

Steam Lap at Admission and Cutoff Formula Elements

Variables

Functions

Steam Lap

Steam Lap is the amount (or distance) that the steam side of the valve overlaps the port.

Symbol: s

Measurement: LengthUnit: mm

Note: Value should be greater than 0.

Formulas to find Steam Lap

Eccentricity or Throw of Eccentric

Eccentricity or Throw of Eccentric is the extent to which the mantle veers from its axis, so it defines the rate at which the material falls through the chamber.

Symbol: r

Measurement: LengthUnit: mm

Note: Value can be positive or negative.

Formulas to find Eccentricity or Throw of Eccentric

Crank Angle

Crank Angle refers to the position of an engine's crankshaft in relation to the piston as it travels inside of the cylinder wall.

Symbol: θ

Measurement: AngleUnit: °

Note: Value can be positive or negative.

Formulas to find Crank Angle

Angle of Advance of the Eccentric

Angle of advance of the eccentric the angle in excess of 90° that a steam-engine valve gear is in advance of the crank.

Symbol: α

Measurement: AngleUnit: °

Note: Value can be positive or negative.

Formulas to find Angle of Advance of the Eccentric

sin

Sine is a trigonometric function that describes the ratio of the length of the opposite side of a right triangle to the length of the hypotenuse.

Syntax: sin(Angle)

Other formulas in Steam Engine Valves and Reversing Gears category

Go Crank Angle

θ = a \sin (- \frac{e}{r}) - α

Go Angle of Advance of Eccentric

α = a \sin (\frac{s + l}{OE})

Go Eccentricity or Throw of Eccentric

r = \frac{t}{2}

Go Displacement of Valve from its Mid-Position

x = r \cdot \sin (θ + α)

How to Evaluate Steam Lap at Admission and Cutoff?

Steam Lap at Admission and Cutoff evaluator uses Steam Lap = Eccentricity or Throw of Eccentric*(sin(Crank Angle+Angle of Advance of the Eccentric)) to evaluate the Steam Lap, Steam Lap at Admission and Cutoff formula is defined as a measure of the steam lap length at admission and cutoff points in a steam engine valve, which affects the engine's performance and efficiency, particularly in reversing gears. Steam Lap is denoted by s symbol.

How to evaluate Steam Lap at Admission and Cutoff using this online evaluator? To use this online evaluator for Steam Lap at Admission and Cutoff, enter Eccentricity or Throw of Eccentric (r), Crank Angle (θ) & Angle of Advance of the Eccentric (α) and hit the calculate button.

FAQs on Steam Lap at Admission and Cutoff

What is the formula to find Steam Lap at Admission and Cutoff?

The formula of Steam Lap at Admission and Cutoff is expressed as Steam Lap = Eccentricity or Throw of Eccentric*(sin(Crank Angle+Angle of Advance of the Eccentric)). Here is an example- -1997.003956 = 0.0027*(sin(0.27052603405907+0.563741348394062)).

How to calculate Steam Lap at Admission and Cutoff?

With Eccentricity or Throw of Eccentric (r), Crank Angle (θ) & Angle of Advance of the Eccentric (α) we can find Steam Lap at Admission and Cutoff using the formula - Steam Lap = Eccentricity or Throw of Eccentric*(sin(Crank Angle+Angle of Advance of the Eccentric)). This formula also uses Sine (sin) function(s).

Can the Steam Lap at Admission and Cutoff be negative?

No, the Steam Lap at Admission and Cutoff, measured in Length cannot be negative.

Which unit is used to measure Steam Lap at Admission and Cutoff?

Steam Lap at Admission and Cutoff is usually measured using the Millimeter[mm] for Length. Meter[mm], Kilometer[mm], Decimeter[mm] are the few other units in which Steam Lap at Admission and Cutoff can be measured.

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Steam Lap at Admission and Cutoff Formula

Steam Lap at Admission and Cutoff Example

Steam Lap at Admission and Cutoff Solution

Steam Lap at Admission and Cutoff Formula Elements

Other formulas in Steam Engine Valves and Reversing Gears category

How to Evaluate Steam Lap at Admission and Cutoff?

FAQs on Steam Lap at Admission and Cutoff

Variable Name