There is no 24 v generator 100kwgasoline engine, diesel engine has a 12 v. Gasoline engine and diesel engine ignition in a different way, gasoline engine mixture explosion is through the spark plug ignites work so don't need high speed, low power of starter is starting it is not necessary to use 24 v, and diesel engine by high pressure combustion explosion work must be high speed, such as with the 12 v power motor size is too big, so diesel engine general use 24 v. 12 v diesel engine cold startability poor generally only in small power diesel engine, the current slowdown starter used to solve this defect.

Now no use dc generator car use the silicon rectification alternator. Current limiter and truncated relay works by electromagnetic induction. Current limiter effect is to make the generator output current average remains the same. The truncated relay is used in the engine to prevent battery backup generator generator coil burn out.