Engine cooling
36
Powerplant
g
Introduction of the New G-Class, Model Series 463
M 157 AMG
To ensure maximum engine power, the engine and
turbocharger must be cooled optimally. The operating
energy input of the coolant pump was able to be mini-
mized through rigorous prevention of hydraulic pres-
sure losses and improvements to details of the cooling
system. The control capabilities of the system were
optimized the same time.
Consistent replacement of aluminium and steel with
plastic e.g. on the thermostat, belt pulley, wheel,
heater valve and hydraulic lines has resulted in low
component weights.
The increased performance of the G 63 AMG
compared to its predecessor, the G 55 AMG, necessi-
tated modification of the cooling package, which was
adapted to M 157 AMG.
The G 63 AMG features an additional low-temperature
cooler in the front bumper as well as an auxiliary water
cooler in the right-hand bumper. Transmission cooling
is performed by a heat exchanger on the vehicle
underfloor. The engine oil is cooled by a heat
exchanger fixed to the engine and an engine oil cooler
in the left-hand bumper.
The electric water circulating pump has been omitted
from the coolant circuit of the stationary heater. It has
been replaced by an electric coolant pump.
P20.20-2431-00
Low-temperature cooler in bumper
– This printout will not be recorded by the update service. Status: 03 / 2012 –
