It is precisely because of the sudden drop in power and torque that it is impossible to constantly enter the starting system just like that. The process is controlled by a mechanical EGR valve. Depending on the load of the drive device, it doses the amount of exhaust gases back into the cylinders. They enter the starting system at times when the driver does not report the need for power. This usually happens in the range of average rotation speeds.
Depressing the accelerator pedal all the way closes the exhaust. Then the loaded engine will be able to “breathe” fully. In most engines, the valve also shuts off the supply of exhaust gases during idling. Otherwise, the revolutions can get dangerously close to the resonant speed. With it, large vibrations will reduce the service life of the crank-piston system.
