Tossa tietoa tosta ryyppysuuttimen toiminnasta ja ohjauksesta.
Lainausta v8-owners-foorumilta
"The thermotime switch is fitted to time the operation of the cold start injector; it is located in the coolant gallery at the left front of the inlet manifold. It must not be confused with the coolant temperature sensor fitted alongside it, but slightly to the rear.
The thermotime switch contains a pair of contact points, one of which is mounted on a bi-metal strip. A heater coil is fitted around the bi-metal strip.
This cold start system is under the control of the ignition switch - it can only operate when the ignition is in the 'crank' position.
When it can operate, the thermotime switch ensures that:
a. The injector does not operate at all if the coolant temperature is greater than 35°C.
b. The injector operates only up to a maximum of 12 seconds to avoid flooding, and the time depends on coolant temperature. In other words the injector only operates for the maximum 12 second period in temperatures of - 20°C; warmer than this and the operating time gets proportionally less.
In the cold condition the contacts are closed; current is fed from the white/red wire through the injector, and then through the bi-metal strip and contacts of the thermotime switch to earth, thus, the injector will operate. The bi-metal strip is sensitive to ambient temperature, and if the ambient is already above 35°C the contacts will be open and the injector will not operate.
The other connection from the white/red wire passes current through the heater element of the switch; it raises the temperature of the bi-metal strip until after a maximum of 12 seconds it will break the contact and the injector will cease to function. "
-TimoV
"The original anti-theft devices -- Lucas Electric products." RR 3.9EFI Vogue, 1990
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