FormulaDen.com

Physics Chemistry Math Chemical Engineering Civil Electrical Electronics Electronics and Instrumentation Materials Science Mechanical Production Engineering Financial Health

Thermal efficiency of IC engine Formula

Fx Copy

LaTeX Copy

Thermal efficiency of ic engine is defined as the ratio of work done per cycle to the actual heat input per cycle in ic engine. Check FAQs

η th = \frac{W}{Q in}

η_th - Thermal Efficiency of IC Engine?W - Work Done per Cycle in IC Engine?Q_in - Heat Added by Combustion per Cycle?

Thermal efficiency of IC engine Example

With values

With units

Only example

Here is how the Thermal efficiency of IC engine equation looks like with Values.

Here is how the Thermal efficiency of IC engine equation looks like with Units.

Here is how the Thermal efficiency of IC engine equation looks like.

0.6667 = \frac{100}{150}

0.6667 = \frac{100KJ}{150kJ/kg}

0.6667 = \frac{100}{150}

Tip: Use pencil ( Pencil

) icon above to edit Input Values and Units.

Calculate

Recalculate

Solution

Copy

Reset

You are here -

Home » Category

Physics » Category

Mechanical » Category

IC Engine » fx Thermal efficiency of IC engine

Thermal efficiency of IC engine Solution

Follow our step by step solution on how to calculate Thermal efficiency of IC engine?

FIRST Step Consider the formula

η th = \frac{W}{Q in}

Next Step Substitute values of Variables

∴

η th = \frac{100KJ}{150kJ/kg}

Next Step Convert Units

∴

η th = \frac{100000J}{150000J/kg}

Next Step Prepare to Evaluate

∴

η th = \frac{100000}{150000}

Next Step Evaluate

∴

η th = 0.666666666666667

LAST Step Rounding Answer

∴

η th = 0.6667

Thermal efficiency of IC engine Formula Elements

Variables

Thermal Efficiency of IC Engine

Thermal efficiency of ic engine is defined as the ratio of work done per cycle to the actual heat input per cycle in ic engine.

Symbol: η_th

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Thermal Efficiency of IC Engine

Work Done per Cycle in IC Engine

Work Done per Cycle in IC Engine is defined as work done to push the piston downwards during the power stroke of the otto cycle in IC engine.

Symbol: W

Measurement: EnergyUnit: KJ

Note: Value should be greater than 0.

Formulas to find Work Done per Cycle in IC Engine

Heat Added by Combustion per Cycle

Heat added by combustion per cycle is defined as the amount of heat energy liberated from the combustion of the fuel in one working cycle.

Symbol: Q_in

Measurement: Heat of Combustion (per Mass)Unit: kJ/kg

Note: Value should be greater than 0.

Formulas to find Heat Added by Combustion per Cycle

Other formulas in For 4 Stroke Engine category

Go Brake Mean Effective Pressure of 4S Engines given Brake power

P mb = \frac{2 \cdot BP}{L \cdot A c \cdot (N)}

Go Indicated Power of Four-stroke Engine

IP = \frac{k \cdot MEP \cdot L \cdot A c \cdot (N)}{2}

Go Horsepower of engine

HP = \frac{T \cdot E rpm}{5252}

Go Bmep given engine torque

P mb = \frac{2 \cdot π \cdot T \cdot N}{s p}

How to Evaluate Thermal efficiency of IC engine?

Thermal efficiency of IC engine evaluator uses Thermal Efficiency of IC Engine = Work Done per Cycle in IC Engine/Heat Added by Combustion per Cycle to evaluate the Thermal Efficiency of IC Engine, The Thermal efficiency of IC engine formula is defined as the ratio of the work done to push the piston downwards during the power stroke of the otto cycle in ic engine. Thermal Efficiency of IC Engine is denoted by η_th symbol.

How to evaluate Thermal efficiency of IC engine using this online evaluator? To use this online evaluator for Thermal efficiency of IC engine, enter Work Done per Cycle in IC Engine (W) & Heat Added by Combustion per Cycle (Q_in) and hit the calculate button.

FAQs on Thermal efficiency of IC engine

What is the formula to find Thermal efficiency of IC engine?

The formula of Thermal efficiency of IC engine is expressed as Thermal Efficiency of IC Engine = Work Done per Cycle in IC Engine/Heat Added by Combustion per Cycle. Here is an example- 0.002533 = 100000/150000.

How to calculate Thermal efficiency of IC engine?

With Work Done per Cycle in IC Engine (W) & Heat Added by Combustion per Cycle (Q_in) we can find Thermal efficiency of IC engine using the formula - Thermal Efficiency of IC Engine = Work Done per Cycle in IC Engine/Heat Added by Combustion per Cycle.

Let Others Know

✖

Facebook

Twitter

Copied!

: Value
: Unit

Thermal efficiency of IC engine Formula

Thermal efficiency of IC engine Example

Thermal efficiency of IC engine Solution

Thermal efficiency of IC engine Formula Elements

Other formulas in For 4 Stroke Engine category

How to Evaluate Thermal efficiency of IC engine?

FAQs on Thermal efficiency of IC engine

Variable Name