Braking. What happens after the battery is full?

[qbee42]

Originally Posted by rbarline

How can an ICE engine use up any charge? I don't think ICEs can do that. There must be a better explanation.

MG1 spins the ICE as a big air pump. Moving air creates friction, which burns up energy as heat.

Tom

[David Beale]

Tom is correct. It doesn't "waste fuel". It DOES use friction brakes more if you are applying the brake (fully friction brake once you reach what the car considers full allowed charge). It also uses EV further up the accelerator pedal travel. The engine is spun with no fuel injected to "dump" excess charge.

Next time you are descending a long hill and are using "B", try applying the accelerator. The engine RPM will -decrease-. Very weird, but correct action.

[M8s]

Originally Posted by qbee42

MG1 spins the ICE as a big air pump. Moving air creates friction, which burns up energy as heat.
Tom

Perhaps you know better than me, but I thought that the MG1 spun the engine. That work puts a load on the MG1 and the MG1 burned up the excess electrons that way.

[fuzzy1]

Originally Posted by M8s

Perhaps you know better than me, but I thought that the MG1 spun the engine. That work puts a load on the MG1 and the MG1 burned up the excess electrons that way.

That may be a semantic difference.

The ICE is configured for maximum drag as a vacuum pump / air compressor, the combination of both MGs spins it, and the wasted heat energy goes out the ICE exhaust.

[qbee42]

Originally Posted by M8s

Perhaps you know better than me, but I thought that the MG1 spun the engine. That work puts a load on the MG1 and the MG1 burned up the excess electrons that way.

Exactly what I said. I suppose you explicitly stated that the electric motor uses electricity, but that seems fairly obvious.

Tom