Carnot Cycle help - Engine temp reservoirs

AI Thread Summary
The discussion focuses on calculating the efficiency of a 4 or 2-stroke motorcycle engine using the Carnot cycle. The main challenge is identifying the temperatures for the hot and cold reservoirs. The hot reservoir temperature is generally the combustion temperature, while the cold reservoir temperature is the exhaust temperature as the gas exits the engine. Participants emphasize the importance of these temperature values for accurate efficiency calculations. Understanding these parameters is crucial for applying the Carnot cycle to engine efficiency analysis.
Big Drop
Messages
5
Reaction score
0
Hi,

I need some help concerning the Carnot cycle [i've searched, but what i needed didn't come up]. I am trying to work out the efficiency of a 4 or 2 stroke motorcyle engine. [car engine, it doesn't matter really]. But I'm having some difficulty finding temperatures for the hot and cold reservoirs. I've searched the internet for a while...but still can''t come up with anything.

If anyone has any idea please help!

Thanks.
 
Science news on Phys.org
Big Drop said:
Hi,

I need some help concerning the Carnot cycle [i've searched, but what i needed didn't come up]. I am trying to work out the efficiency of a 4 or 2 stroke motorcyle engine. [car engine, it doesn't matter really]. But I'm having some difficulty finding temperatures for the hot and cold reservoirs. I've searched the internet for a while...but still can''t come up with anything.

The hot reservoir temp is typically the combustion temperature, and the low temperature is the temperature at which the gas leaves the useful part of the engine.
 

Thread 'Entropy and configurations of microstates'

I was watching a Khan Academy video on entropy called: Reconciling thermodynamic and state definitions of entropy. So in the video it says: Let's say I have a container. And in that container, I have gas particles and they're bouncing around like gas particles tend to do, creating some pressure on the container of a certain volume. And let's say I have n particles. Now, each of these particles could be in x different states. Now, if each of them can be in x different states, how many total...
View full post »
Thread 'Why work is PdV and not (P+dP)dV in an isothermal process?'

Thread 'Why work is PdV and not (P+dP)dV in an isothermal process?'

Let's say we have a cylinder of volume V1 with a frictionless movable piston and some gas trapped inside with pressure P1 and temperature T1. On top of the piston lay some small pebbles that add weight and essentially create the pressure P1. Also the system is inside a reservoir of water that keeps its temperature constant at T1. The system is in equilibrium at V1, P1, T1. Now let's say i put another very small pebble on top of the piston (0,00001kg) and after some seconds the system...
View full post »

Similar threads

B Question regarding Heat Transfer in Carnot Engine
Replies
1
Views
2K
How many reversible thermodynamic cycles are there between two heat reservoirs?
Replies
12
Views
2K
Irreversible cycles, Carnot's Principle and volume-pressure diagrams
Replies
7
Views
2K
Do Carnot and Stirling Engines Have the Same Efficiency?
Replies
8
Views
14K
The entropy of a Carnot cycle and the efficiency equation
Replies
5
Views
2K
I Do refrigerants passing through a venturi act like steam?
Replies
8
Views
2K
The Carnot Cycle: Efficiency and Validity with Gases, Solids, and Liquids
Replies
7
Views
2K
What Makes the Carnot Cycle the Most Efficient?
Replies
1
Views
9K
Proving Carnot efficiency is maximum and conditions
Replies
1
Views
2K
Understanding the Carnot cycle
Replies
1
Views
2K

Hot Threads

Recent Insights

Back
Top