Engine 9111 · Shifting options of VarioCam Plus system

Engine 9111 Shifting options of VarioCam Plus system 1_05_02 A - Cam stroke in mm 1 - Exhaust medium B - °Crank angle 2 - Intake medium, retard 3 - Intake medium, advanced minor valve deviations from the centre position.Solenoid hydraulic valve The solenoid hydraulic valve is designed as a 4-way proportioning valve and depending on the control unit command, connects one of the two control lines (A/B) with the oil The 4-way proportioning valve thereforepressure feed line (P) and also opens the other line to determines the adjustment direction and allow the oil to flow out into the crankcase the adjustment speed of the adjuster. (T-line) If the A-line is pressurised with oil, the adjuster is turned in the advanced direction. If the B- line is pressurised with oil, the adjuster is turned in the retard valve timing direction. In the centre position, both control lines are closed. The camshaft is held in the desired position. Furthermore, any intermediate position in between the three switch positions described above is adjustable via the control unit. This not only allows for very rapid processing of the adjustment position, but also very slow processing with 1 - 10 Service Information 2002