GAC gs3 - Why Is There Jitter During Emergency Braking; (Accompanied by Slight Noise); Why Should the Engine be Kept Idling for a Period of Time before Shutting down the Engine

61
Q&A
Why is there jitter during emergency braking
(accompanied by slight noise)?
During emergency braking, to
ensure the minimum braking
distance and steering of
the vehicle, ABS will work
and distribute brake force to
tires according to computer
commands to roll and slide
the tires alternately so that the
vehicle body and brake pedal
shake.
When ABS works or performs
self﹣test, the motor inside the
module will operate for a short
time and the valve body will be
opened and closed frequently,
accompanied by slight noise.
Please feel relieved to use the vehicle because the phenomena
mentioned above are normal.
Why should the engine be kept idling for a period of
time before shutting down the engine?
The speed and temperature of the turbocharger will be the highest when
the engine works at its maximum output power or maximum torque.
Accordingly, before parking, the engine is required to operate at a
moderate or idle speed or under light load for a period of time so that the
engine keeps certain lubricating and cooling abilities to lower the operating
temperature of the turbocharger gradually. In this way, the turbocharger
can be prevented from operating in lack of oil, and the lubricating oil left in
the bearing or bearing housing can be prevented from being carbonized to
generate carbon deposits.