View of engine ventilation system |
1 | Centrifuge |
2 | Oil separator |
3 | Partial load purge line |
4 | Purging pressure sensor |
5 | Connection fitting to ATL |
6 | Connection fitting to activated charcoal canister |
7 | Wide open throttle purge line |
8 | Check valve for partial load operation |
P47.31-A004-76
Overview
This document contains information on:
General
Location
Function
General
The purging pressure sensor detects the existing pressure in the full load purge line for the purging of the activated charcoal canister.
The purging is enabled if a sufficient pressure gradient exists between the intake air system and the full load purge line.
P47.30-A036-79
Example illustration of engine 260 |
4 | Purging pressure sensor |
Location
The purging pressure sensor is in the full-load purge line.
Function
The boost pressure is measured via a ceramic measuring element that is applied with the prevailing air pressure (ambient pressure) by a diaphragm. This pressure impingement causes the electric capacity of the measuring element to change. The capacity change is converted into an electrical output signal of 0.5 V to 4.5 V and transmitted to the combustion engine control unit.