BMW 5 Series: Heat management module
The function of the heat management module is similar to that of the heat
management module of the
B58 engine.

B58TU engine heat management module
- Coolant output towards the coolant pump
- Electric split cooling valve
- Coolant outlet to coolant radiator
- Electrical actuator, heat management module
- Coolant entry, split cooling valve
- Coolant entry, heat management module
- Coolant outlet, heating
A rotary valve inside the heat management module ensures needs-driven cooling
of the various engine
components. The opening cross-sections of the various coolant ducts can be
opened or closed
variably. A position sensor in the electrical actuator of the heat management
module forwards the
current position of the rotary valve to the Digital Motor Electronics (DME). The
exact position of the
rotary valve can thus be determined so that it opens or closes a precisely
defined cross-section with
respect to the various coolant ducts. Adjusting the cross-sections ideally
adapts the flow rates of the
coolant ducts connected to the heat management module to the engine operating
points. To correctly
position the rotary valve, the Digital Motor Electronics (DME) require
information including the coolant
temperature from the coolant temperature sensor, and the material temperature of
the cylinder head
from the component temperature sensor . Warm-up and cooling of the engine and
the supply to
ancillary components can be implemented as driven by requirements, thus
optimizing consumption.
The following tables provide an overview of the technical data of the heat
management modules:

* SENT report = Single Edge Nibble Transmission
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The following graphic shows the positions of the rotary valve as the coolant
temperature increases.
Circuit diagram of heat management module in B58TU engine
0 % - Rotary valve closed
100% - R
Point A in the heat management module circuit diagram designates the cold
start with an engine that
has completely cooled down.
Cold-start phase, Bx8TU engine
In the cold-start phase, the coolant c
The positions of the rotary valve at engine operating temperature are shown
by area C of the circuit
diagram.
Operating temperature, Bx8TU engine
The graphic shows control with the engine at operat
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Introduction
The terminal control in the G30 is identical to the terminal control of the
G12. In the G30, the vehicle
is always in the right condition from the point of view of the customer. The
terminals are controlled
via a customer-oriented condition management. The terminal control is dependen
The revised 8HPTU automatic transmission, which is already known from the F23
(2 Series BMW
convertible) and F85/F86 (BMW X5 M, BMW X6 M) and G12 is used in the G30.
The special features of the automatic transmission in the G30 are described in
this document.
8HPTU automatic transmission with ac