Gdetrailer wrote:
Alternator IS NOT going to "call" for more "engine speed", alternator is extremely tiny "load", so small it is insignificant.
I am sorry but you are incorrect. Most (I always hesitate to say ALL) vehicle built after about 2000, have some type of "smart" charging system. The alternator DOES IN FACT "TALK" TO THE PCM and will ask for higher speed
Gdetrailer wrote:
If a 300HP engine cannot stand a 3.5 HP (1%) alternator load without the need to alter the RPM it is time to scrap that engine design, it is junk.
Your numbers are correct, except you have not accounted for losses (Second Law of Thermodynamics). At max output, it would not surprise me if a 220A alternator could consume around 20 hp !
Gdetrailer wrote:
Manufacturers do not even do that for the A/C compressor (RPMs DO drop when the A/C compressor turns on at idle, typically a 50 RPM drop in idle speed).
Hmmm ... seems to me that
I ACTUALLY WROTE THE SOFTWARE that increased the idle speed of the engine at idle sometime back in the early 1980s !
Experience counts : 31 years of Powertrain Control System hardware and software.
