4.1.8. OVAD starting arrangement
Installation of the auxiliary valve of a priotkryvaniye of a starting diaphragm| 2 – connector, 3 – second membrane, 4 – tank |
Auxiliary valve of a priotkryvaniye of a starting diaphragm (scheme of work)
| 1 – adjusting screw, 2 – the calibrated jet, 3 – shaft of management of a starting diaphragm, 4 – discharge pipeline, 5 – receiver, M1, Sq.m – membranes |
The mechanism has a control system of a priotkryvaniye, two-membrane with discharge, and also a receiver of discharge and the socket.
Work
The engine is cold, the starting arrangement is switched on, springs push membranes in the direction of the case of the carburetor and influence a shaft of management, the starting diaphragm is closed. During start of the engine discharge in an inlet tube influences a membrane of M1 which leans on the Sq.m membrane. Discharge does not influence the Sq.m membrane immediately because of use of the calibrated jet in pass between the camera and a receiver. The starting diaphragm is slightly opened, but in such degree that enrichment immediately increases. Discharge reaches the second camera and the receiver works, the spring is compressed by a membrane, the shaft of management of a starting diaphragm can move until the end of the course, and the starting diaphragm opens completely.
Connection of the second camera and pipeline of discharge in cars with the automatic transmission
| 1 – the calibrated jet, 2 – returnable valve |
In cars with the automatic transmission the external camera is connected to a carburetor support by means of the valve of delay and the calibrated jet.