LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> BMW >> 2011 >> 1M >> Repair and Diagnosis >> General Information >> OEM General Information >> Functional Description - 1-Series >> Engine Performance - Functional Description >> Vacuum supply >> System functions >> Build-up of partial vacuum
October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Build-up of partial vacuum

For the first stage, the largest portion of the spatial enlargement (discharging) is used, thus building up the partial vacuum quickly for the brake servo. Only in the last section is the opening released for the additional loads, i.e. the second stage is activated. Building up the partial vacuum for the additional loads takes longer, as shown in the following diagram.

Fig 1: Partial Vacuum Supply And Delivery Rate Characteristic Curve
G09841700Courtesy of BMW OF NORTH AMERICA, INC.
Item Explanation
1 Partial vacuum
2 Time
3 Delivery rate for additional load
4 Supply rate for brake servo

We can assume no liability for printing errors or inaccuracies in this information and reserve the right to introduce technical modifications at any time.

scientia non olet · About LEMON Manuals