When the throttle valve is closed, the engine has {HEAD ~ a predefined drag torque MSM} which is dependent on {TAIL ~ the engine speed} and which is limited at low engine speeds to comply with the idling engine speed value by the idling regulator to produce a minimum engine torque MM  
When the throttle valve is closed , the engine has { HEAD ~ a predefined drag torque MSM } which is dependent on { TAIL ~ the engine speed } and which is limited at low engine speeds to comply with the idling engine speed value by the idling regulator to produce a minimum engine torque MM
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH