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Internal Combustion Engine and Thermodynamics
This deck covers the principles of a four-stroke internal combustion engine, energy changes, and basic thermodynamics related to heat transfer and energy calculations.
What is an internal combustion engine?
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Key Terms
Term
Definition
What is an internal combustion engine?
An internal combustion engine is a heat engine where the combustion of fuel occurs with an oxidizer in a combustion chamber.
What is the function of the part labelled X in producing power in an engine?
The function of the part labelled X is to convert the energy from combustion into mechanical power.
Outline the energy changes that occur in a four-stroke engine.
In a four-stroke engine, chemical energy from fuel is converted into thermal energy, and then into mechanical energy.
Describe the exhaust stroke in a four-stroke spark ignition engine.
During the exhaust stroke, the exhaust valve opens and the piston moves up, expelling the burnt gases from the cylinder.
Explain the function of the crankshaft in engines.
The crankshaft converts the linear motion of the pistons into rotational motion to drive the vehicle.
What environmental condition would enable a wet jersey to dry faster?
A warm, dry, and windy environment would enable the jersey to dry faster.
Related Flashcard Decks
| Term | Definition |
|---|---|
What is an internal combustion engine? | An internal combustion engine is a heat engine where the combustion of fuel occurs with an oxidizer in a combustion chamber. |
What is the function of the part labelled X in producing power in an engine? | The function of the part labelled X is to convert the energy from combustion into mechanical power. |
Outline the energy changes that occur in a four-stroke engine. | In a four-stroke engine, chemical energy from fuel is converted into thermal energy, and then into mechanical energy. |
Describe the exhaust stroke in a four-stroke spark ignition engine. | During the exhaust stroke, the exhaust valve opens and the piston moves up, expelling the burnt gases from the cylinder. |
Explain the function of the crankshaft in engines. | The crankshaft converts the linear motion of the pistons into rotational motion to drive the vehicle. |
What environmental condition would enable a wet jersey to dry faster? | A warm, dry, and windy environment would enable the jersey to dry faster. |
Calculate the amount of heat absorbed by 200g of water evaporating from a jersey. | The heat absorbed is 460,000 Joules, calculated using the formula: mass x specific latent heat (200g x 2300J/g). |
How does the heating element at the bottom of a waterbath heat the water throughout? | The heating element transfers heat to the water by conduction, which then circulates by convection currents, distributing heat evenly. |
Calculate the energy required to raise 5 liters of water from 25°C to 100°C. | The energy required is 1,575,000 Joules, using the formula: mass x specific heat capacity x temperature change. |
Why does it take longer than calculated to heat water to 100°C in practice? | Heat losses to the environment and inefficiencies in the heating process cause it to take longer. |