BMW 3: Fuel supply
BMW 3 Series G20 (2018-2026) Training manual / Drive Components / Fuel supply
For the operation of the combustion engine, the G20 PHEV is equipped with a pressurized fuel tank. As a result during purely electric driving it is guaranteed that the gasoline fumes remain in the pressurized fuel tank. Only with the operation of the combustion engine is fresh air drawn in by the carbon canister for purging and the gasoline fumes are directed to the combustion chamber.
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Components and their installation location
G20 PHEV components of the fuel supply in European version
Carbon canister
Pressurized fuel tank (in cast aluminum housing)
Fuel filler flap with cover
Fuel tank isolation valve
Cable for
System wiring diagram
G20 PHEV, system wiring diagram for fuel supply
Integrated supply module
Digital Motor Electronics (DME)
Shutoff valve purge air line (only for US version)
Body Domain Controller (BDC)
Fue
Refuelling
The pressurized fuel tank must be vented before refuelling. To initiate the
refuelling procedure, the
button in the driver's door first needs to be operated. The button is not active
when the vehicl
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Monitoring functions
High-voltage interlock loop
The SME control unit evaluates the signal of the high-voltage interlock loop
and checks whether there
is an open circuit with this circuit. In the event of an open circuit, the
battery management electronics
control unit can cause the high-voltage system to perform a qu
Vehicle features and
options
This Owner's Manual describes all models and
all standard, country-specific and optional equipment
that is offered in the model series. Therefore,
this Owner's Manual also describes and illustrates
features and functions that are not
available in a vehicle, for example because of the
selected option
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