To reduce the maintenance окиси nitrogen in the fulfilled gases, the part of gases goes system рециркуляции the fulfilled gases to an inlet collector therefore the combustion temperature goes down.
The system рециркуляции the fulfilled gases consists of valve EGR, the modulator switching of the vacuum valve (VSV) (it is located about a final collector) and vacuum hoses. Valve EGR copes vacuum on the basis of signals from the engine management block.
Valve EGR replacement make as follows:
– Remove throttle knot;
– Disconnect a vacuum hose from valve EGR;
|
|
Fig. 7.26. An arrangement of the valve of system of repeated burning of the fulfilled gases (EGR)
|
– Disconnect a system hose
рециркуляции the fulfilled gases, turn out bolts and remove valve EGR from an inlet collector (
fig. 7.26). If valve EGR is littered, replace it, but do not wash out in solvent.
Installation make in sequence, return to removal.
Replacement of vacuum modulator EGR and the filter make as follows:
– Mark and disconnect vacuum hoses from vacuum modulator EGR. Remove vacuum modulator EGR from an arm;
|
|
Fig. 7.27. Removal of the filter from modulator EGR
|
– If the modulator is repeatedly established, uncover and check up a condition of its filters (
fig. 7.27);
– Clear filters, blowing their compressed air. If filters cannot be cleared, replace them or the modulator.
Installation make in sequence, return to removal.
Replacement of the vacuum valve (VSV) make as follows:
– Disconnect from valve VSV an electric socket;
– Mark and disconnect from valve VSV vacuum hoses;
– Remove the valve from an arm.
Installation make in sequence, return to removal.