BMW 3 Owners & Service Manuals

BMW 3: Innovations B46TU/B48TU

BMW 3 Series G20 (2018-2025) Training manual / B46TU-B48TU Engines / Introduction / Innovations B46TU/B48TU

Innovations B46TU

To meet the legal requirements for emissions, a number of technical improvements have been implemented. The technical updates for the B46TU engine include the following new features:

Innovations B46TU
New features

  1. Modified cylinder head
  2. Crankshaft weight reductions
  3. Single-part timing chain drive
  4. Modified belt guide
  5. Split cooling
  6. Heat management module with electrical Split Cooling Valve (SCV)
  7. Fuel preparation with 350 bar (5076 psi) injection pressure
  8. DME 8

Weight savings in the crankshaft drive area, injection pressure boosting in the fuel preparation area, and function changes in the engine cooling area have made it possible to reduce the CO2 emissions by 2.5 - 5%, while increasing engine performance by 5 kW/20 Nm (8 hp/15 lb-ft).

Innovations B48TU

The technical improvements made to the B48TU engine a highlighted below:

  • 302 hp (225 kW)
  • 332 lb-ft (450 Nm)
  • Reinforced crankshaft with larger main bearing diameter.
  • New piston with modified compression.
  • New connecting rods without a bearing on small end.
  • Newly developed larger exhaust turbocharger with integrated air-diverter valve.
  • Modified fuel injectors with increased flow rate and 350 bar pressure.
  • Newly developed intake air pipes for higher power and torque.
  • Modified exhaust system to minimize back pressure.
  • Engine cover with M Performance logo.

    READ NEXT:

     Engine identification

    B46TU engine Engine identification - transverse mounted shown B48TU engine Engine identification - transverse mounted shown Engine number Engine identification The 7-digit engine identification

     Engine Mechanical

     Engine housing, Crankshaft drive

    Engine housing Cylinder head The cylinder head is made of aluminum. Only slight modifications have been made to the B46TU head compared to the B46. Cylinder head Crankshaft drive Crankshaft Comparis

    SEE MORE:

     Event Data Recorder EDR

    This vehicle is equipped with an event data recorder EDR. The main purpose of an EDR is to record, in certain crash or near crash-like situations, such as an air bag deployment or hitting a road obstacle, data that will assist in understanding how a vehicle's systems performed. The EDR is designed t

     Functions in the map view

    General information Different information can be called up for any point on the map and settings can be adjusted. Here, the map can alternatively be used via the touchscreen. Interactive map Operating the interactive map 1. Press the button on the Controller. 2. Press the Controller. 3. "Interac

    © 2019-2025 Copyright www.bmw3g20.com