12 Volt vs 24 Volt diesel engine
12 Volt vs 24 Volt diesel engine
(OP)
In diesel engine we have 12volt and 24volt battery system. I am wondering for any application of diesel engine, how can we decide whether we need 12volt or 24volt diesel engine? What are the deciding factors about it? I can understand that by increasing voltage we can have more power, but why we need 24 volt over 12 volt?
RE: 12 Volt vs 24 Volt diesel engine
Some markets may be tilted toward one or the other, making it more difficult to get parts and other support for the non-preferred option. Kind of like being left-handed in a right hand world. From a clean sheet of paper, 24 volt is generally better, as everything can be downsized except the insulation, which is not a significant factor.
"Schiefgehen wird, was schiefgehen kann" - das Murphygesetz
RE: 12 Volt vs 24 Volt diesel engine
RE: 12 Volt vs 24 Volt diesel engine
I understand it now.
In the beginning, I thought it was more about application side rather than downsizing components.
RE: 12 Volt vs 24 Volt diesel engine
RE: 12 Volt vs 24 Volt diesel engine
RE: 12 Volt vs 24 Volt diesel engine
You don't. The engine supplier does or if he's being generous then he offers you the choice.
Or just take the 24V and use two 12V batteries in series and run all your 12V stuff off one battery or share the load between two batteries.
Remember - More details = better answers
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RE: 12 Volt vs 24 Volt diesel engine
That is what I want to understand. Why there is 12v and 24v system. what makes engine manufacturer to decide whether to 12v or 24v?
RE: 12 Volt vs 24 Volt diesel engine
apparently military trucks all use 24V so its easier to have one system.
Also before LED lights headlights could be 70W for 24V versus 60W for 12V.
Why do you want to know?
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: 12 Volt vs 24 Volt diesel engine
RE: 12 Volt vs 24 Volt diesel engine
RE: 12 Volt vs 24 Volt diesel engine
"Schiefgehen wird, was schiefgehen kann" - das Murphygesetz
RE: 12 Volt vs 24 Volt diesel engine
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: 12 Volt vs 24 Volt diesel engine
RE: 12 Volt vs 24 Volt diesel engine
RE: 12 Volt vs 24 Volt diesel engine
RE: 12 Volt vs 24 Volt diesel engine
Most of the smaller off road equipment and generators that only require one battery are 12V. Since batteries do not come in 24V, it wouldn’t make sense to add an extra battery just to make a higher voltage. Larger equipment and generators are usually 24V for reasons already mentioned including smaller conductors and less voltage drop.
I know some of the older gensets were 36 volt (just as Some older cars were 6V)
RE: 12 Volt vs 24 Volt diesel engine
RE: 12 Volt vs 24 Volt diesel engine
RE: 12 Volt vs 24 Volt diesel engine
I think the 24V mark starts at 5 tonnes plus.
Truck in Europe means large commercial transport capable of carrying 5tonnes plus.
In the US it seems to be used for pick ups/ domestic vehicles.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: 12 Volt vs 24 Volt diesel engine
Per cell, yes. For the vast majority of Diesel engine starting applications, 12V batteries are used and connected in series for 24V (when the system is 24V).
RE: 12 Volt vs 24 Volt diesel engine
Many years ago, yes. Anything built in the last 30 years will be 12V start.
RE: 12 Volt vs 24 Volt diesel engine
For the purpose of this discussion I meant class 7 and 8 truck. Most Everything on the road these days is 12 volt anyway.
RE: 12 Volt vs 24 Volt diesel engine
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: 12 Volt vs 24 Volt diesel engine
I believe you are thinking of 480v hi voltage systems, which are commonly still controlled with 12v lo. College professors and the media have been predicting a lo voltage change for 20+ years, still haven't seen it tho for the obvious reason - no benefit and plenty of cost.
RE: 12 Volt vs 24 Volt diesel engine
RE: 12 Volt vs 24 Volt diesel engine
"Schiefgehen wird, was schiefgehen kann" - das Murphygesetz
RE: 12 Volt vs 24 Volt diesel engine
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