FIELD: automotive industry.
SUBSTANCE: preliminary heater comprises combustion chamber, nozzle mounted inside the chamber, solenoid-operated valve for supplying fuel to the nozzle, switch of solenoid-operated valve, ignition device, spark plug connected with the ignition device and mounted in the chamber, switch of the ignition device, electromagnetic relay with normally unclosed contacts connected with the switch of the solenoid-operated valve in parallel, two insulated electrodes mounted in the combustion chamber in the zone of nozzle flame and connected with winding of the electromagnetic relay in series, and with the power source. The switch of the solenoid-operated valve is secured to the switch of the ignition device to be switched in or off synchronously.
EFFECT: enhanced safety.
1 dwg
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