BMW 3: Coolant pump
The layout and function of the coolant pump have been revised and adapted to match the cooling concept of the B46TU/B48TU engines.
Coolant pump
- Pressure relief valve closed (pressure < 2.2 bar / 32 psi)
- Pressure relief valve opened (pressure > 2.2 bar / 32 psi)
A pressure relief valve is installed in the mechanical coolant pump housing. In combination with the heat management module, the pressure relief valve on the one hand ensures that the engine operating temperature is reached more quickly, while at the same time reducing leaks and component damage due to high pressure in the cooling system.
If an excess pressure of more than 2.2 bar (32 psi) builds up in the coolant circuit, the pressure relief valve opens and releases a bypass channel. The coolant is now exclusively circulated in the pump body. Once the pressure drops below 2.2 bar (32 psi), the pressure relief valve closes and the coolant is again routed through the coolant ducts.
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Exhaust System
Exhaust turbocharger
Exhaust turbocharger
The exhaust turbocharger can be replaced individually and is exclusively made
of steel. The boost
charge pressure is still controlled by an electrical waste
Fuel System
The fuel system is made up of the fuel supply and fuel preparation systems.
The fuel supply includes
the fuel tank with all mounted parts and the fuel lines up to the engine
compartment.
The fuel p
Fuel preparation
The fuel preparation has again been adapted to meet the emission legislation
requirements. The high
pressure pump and the injectors have been revised and designed for an fuel
injection pressure of
3
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External devices
General information
External devices can also be connected to the
vehicle as additional entertainment sources.
Connection of external audio and video devices
or digital cameras via the HDMI in the
rear. Operation takes place on the external
device.
Connection of external devices via the USB
a
Teleservice Report
Concept
Transmits technical data that is evaluated for the
ongoing development of BMW products from
the vehicle to BMW in regular intervals, if
needed.
General information
The Teleservice Report is free of charge and is
activated in vehicles that meet the following requirements:
Certain technical
