Calculating Cooling & Alternator Losses for Engines

In summary, when considering power losses in a vehicle, it is common to only account for straight friction and ignore other losses. However, it is possible to estimate cooling and alternator losses as a percentage of the engine's power output. This assumes a constant power from the engine and a constant consumption from the cooling and alternator, which may not be accurate in reality. Further research may provide more accurate estimations.
  • #1
dean barry
311
23
When dealing with power losses from engine to drive wheel(s) i ignored losses other than straight friction, can cooling and alternator losses be taken as roughly a percentage of the cars engine power ?
Thanks
Dean
 
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  • #2
Thanks for the post! Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?
 
  • #3
No problem, will research further on the net, thanks though.
Dean
 
  • #4
Hi Dean,

Power losses are energy losses in time. If you assume a constant power of the engine, and also assume a constant cooling and alternator consumption (not constant in reality), then "roughly" those will be a percentage of your engine power.
 
  • #5
Thanks for your input.
Dean
 

Related to Calculating Cooling & Alternator Losses for Engines

1. What are cooling and alternator losses in engines?

Cooling losses refer to the energy that is lost in the form of heat during the process of cooling the engine. Alternator losses, on the other hand, are the energy losses that occur in the alternator (a device that converts mechanical energy into electrical energy) due to friction and other factors.

2. Why is it important to calculate cooling and alternator losses for engines?

Calculating cooling and alternator losses allows us to understand the overall efficiency of an engine. It helps us identify areas for improvement and make necessary adjustments to increase the engine's performance and reduce energy waste.

3. How are cooling and alternator losses calculated?

Cooling and alternator losses can be calculated by measuring the temperature difference between the inlet and outlet of the cooling system and the input and output power of the alternator. These values are then used in mathematical formulas to determine the losses.

4. What factors affect cooling and alternator losses in engines?

Cooling and alternator losses can be affected by several factors such as engine speed, load, coolant flow rate, ambient temperature, and design of the cooling system and alternator. These factors can impact the efficiency of the engine and the amount of energy lost.

5. How can cooling and alternator losses be reduced?

To reduce cooling and alternator losses, it is important to regularly maintain the engine and its components, ensure proper air flow and coolant circulation, and use high-quality materials for the cooling system and alternator. Additionally, incorporating advanced technologies and design improvements can also help to minimize losses in engines.

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