The control of the spark ignition of an automotive engine requires constant performance over a wide range

Question:

The control of the spark ignition of an automotive engine requires constant performance over a wide range of parameters [15]. The control system is shown in Figure DP6.1, with a controller gain K to be selected. The parameter p is equal to 2 for many autos but can equal zero for those with high performance. Select a gain K that will result in a stable system for both values of p.
Figure DP6.1
Automobile engine control.