Specifications

Service Training
Section 4.9
Page 35
12.05
STOPPING
By switching off the ignition, the throttle valve in the propellant gas mixer (3) is closed. At the same time,
the distributor valve (11) switches to open position, and the low pressure still present in the system is
thereby led through the conduct (5) of the secondary diaphragm in the vaporisor (9) by the engine runoff
in the intake manifold. This closes the secondary valve in the vaporisor, shuts off the gas flow and causes
the engine to stop, with no run-on and no uncontrolled burning in the outlet. By closing the throttle valve,
the vacuum is also filled in the conduit (4), the vacuum-regulated shutoff valve (14) closes and the LPG
path to the vaporisor (9) is cut off.
After the engine stops and the steel-cylinder valves close, some liquid gas remains in the conduit (17). The
pressure in the conduit (17) will now rise owing to the ambient temperature. The maximum possible
pressure is limited by the valve (18) and thus an explosion of the conduit is avoided.