An Example in Steel  Casting  --  Lever Arm in the BMW Engine Valve Train

Valvetronic System -- Operation and Performance

The Valvetronic system has the ability to get deep, long ventilation (large valve lift) and flat, short ventilation (short valve lift), depending on the demands placed on the engine.

Key valve performance parameters are --

  • Valve lift is variable between 0 and 9.7 mm.

  • Adjustment of the sensor motor gear from one extreme to the other takes 300 milliseconds.

  • Combined with double variable camshaft valve timing technology, the camshaft angle relative to the crankshaft can be adjusted by up to 60°.


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