The idea is about engine downsizing. Say your sailboat hull reaches a comfortable cruising speed at 135 hp (big boat, I know). In the Vetus...
The 12 hours part was the only thing I asked for. Thank you!
Please post the figures that you mention. I don't think you understand the parallel hybrid concept, and therefore you do not understand my...
The electric motor is powered from batteries. Of course the batteries run down. That is the issue. These batteries are not used, except when...
It is not clear. That is why I started this thread. Remember that I am proposing to replace an engine with a hybrid having the same total power. A...
Well, I started this discussion because I did not know the answer for some parameters. I clearly stated my assumptions in the beginning, which...
If I rephrase the overpowered part to "usually have more power than they need", would that clarify things?
Well, for me a hybrid is a mix between two engine types. Not regeneration of energy while breaking, that will of course not work for a boat. A...
There are some merit for hybrid technology, but it will not replace your diesel. Fuel could be saved though. Assuming most diesels for...
That battery (1300 kWh) is equivalent to 26 gallons of diesel. Many boats have more fuel than that. Even if you can use only 33 % of the energy...
I think no one on this forum can afford that boat.
You still need the stink pot to generate power to your electric engine. So what is the gain? If you do the thought experiment below, maybe you...
It is possible to use magnetic fields to store/use energy from a flywheel. Electric motors work that way.
Gozo is completely correct. I think many people misses the fact that a refrigerator IS an air conditioner. In the case of the fridge, the heat is...
As you say, optimize everything is not possible using this information. Since you know the torque (from the diagram) at the maximum efficiency,...
To hopefully kill of the thread, I will post a table containing energy densities: http://en.wikipedia.org/wiki/Energy_density If you look in...
You are contradicting yourself From the diagram in your own example, peak efficiency is at 2500 RMP. For me it looks like peak torque is reached...
The efficiency of a motor is how well it converts input power to output power. Here is an example which I found on Google:...
Well, an electric motor usually have it's efficiency peak at 75 % of max RPM. Max power is usually produced at 50 % of max RPM. For IC:s, the...
Who is Misinformed? I almost never do rough track climbs with my boat and must admit I don't know if an electric motor would propel it better in...
