eli5 What’s happening when an engine stalls from low RPM?

Question

eli5 What’s happening when an engine stalls from low RPM?

In: 21

Answer 1

Engine compress then burn the fuel air mix. The resulting gases push the piston down again, and that’s your power from combustion transferred to the crankshaft.

It need to have the momentum to end the next compression, then ignite the mix, then it gets the energy to keep going until the next compression.

If you release the clutch too sharp with too much load for example, you steal that momentum, the next compression is not achieved the engine dies.