BMW 3 Owners & Service Manuals

BMW 3: Drive Components

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 Introduction

In the G20 PHEV, the B46B20O1 is an element of the BMW hybrid drive. The 4-cylinder engine, which generates power of 135 kW (180 hp) and a maximum torque of 300 Nm, guarantees mo

 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

 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

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 Fuel high-pressure pump

The single-piston high pressure pump by Bosch, well-known from the B46 engine, is used. The high pressure pump HDP6 is driven by a triple cam which is attached to the exhaust camshaft. To be able to accommodate a fuel system pressure of 350 bar (5076 psi), the pump piston and tappet have bee

 Adapted control units

It was necessary to adapt the IHKA to enable activation of the electric A/C compressor (EKK) in all operating conditions. The electric A/C compressor control unit communicates with the IHKA via the LIN bus. To be able to show additional displays for driving readiness, electric driving, brake ene

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