Heated fuel standpipe nozzles ÍÒÏ-100 and ÍÒÏ-200 are developed for installation on regular vehicular fuel standpipes to ensure diesel fuel intake from the tank under low temperature conditions when the intake of the frozen and condensed fuel is impossible by standard fuel standpipes. Diesel fuel pre-heating and accordingly its viscosity reduction and dewaxing before engine starting are conducted by the nozzle’s electric heater operating on car battery (car system) power.
The nozzles ÍÒÏ-101 (102) and ÍÒÏ-201 (202) by ÍÎÌÀÊÎÍ™ have alternate designs for installation on the fuel in-line standpipes with the diameters of the fuel standpipe tubes in 10 and 12 mm under 12 and 24V operating supply voltage. The nozzles consist of a fuel slot-type filter, vibration-resistant fire- and explosion-proof posistor electric heater for the slotted filter and fuel nozzle heating, nozzle attachment device to the end of the fuel standpipe tube.
The nozzles are connected to the vehicular power-supply system with manual heating control or to the automatic heating control system ÑÏÀ-101 (201).
In the case of manual control a switch with indication is mounted in the cabin within visibility zone from the driver's seat. The switching-on of the heater is conducted by pressing the button of the switch.
The nozzles are designed for the fuel intake up to 420 liters per hour under the temperature from -40°C to +45°C;
The electric heater has 12V and 24V supply voltage and maintains operating capability at power-supply variation within the range of 75-125% of nominal voltage;
The warm-up time of the slotted filter and fuel in the standpipe tube with electric heater in the pre-starting period until the paraffin melting (dewaxing) temperature is less than 3-5 minutes;
Continuous fuel heating during engine operation is possible under low temperature conditions;
Depending on the operating mode S1, location in the automotive machinery and operating conditions nozzles have the group Æ modification in accordance with the state technical requirements 3940 and climatic modification ÕË2 in accordance with the state technical requirements 15150 at an ambient temperature from -40°C up to +45°C;
Protection rate of the enclosure contacting with the fuel inside the fuel tank is not less than IP68-level, outside the fuel tank (outer part) is not less than IP67-level in accordance with the state technical requirements 14254;
Mean time between failures is at least 3000 h, the service life is at least 5 years and the storage life is at least 2 years from the date of production and packaging.
Main technical specifications of the heated fuel standpipe nozzles ÍÒÏ-101 (102), ÍÒÏ-201 (202) ÒÓ ÐÁ 100009933.009-2009
DC power-supply voltage, V
Inlet electric heater resistance, Ohm
Maximum starting current, À, not more
Nominal electric power, W
Maximum diesel fuel consumption, l/h
Operating temperature range, climatic modification
îò -40 äî +45 °Ñ, ÕË2
Minimal diameter of fuel tank bore for installation of a fuel standpipe with nozzle, mm
Fuel standpipe tube diameter, mm
Loaded weight, kg, not more
Aluminum alloy, heat-resistant and petrol-proof plastics
Manual, automatic with the connection to the ÑÏÀ
Temporary (5-10 minutes from the battery), continuous from vehicle generator
The delivery set includes: packed nozzle, wiring kit for connection to the power-supply system or to the ÑÏÀ, certificate, installation and maintenance manual.
where ÍÒÏ-2 – model designation; 01 – modification number; /12 – fuel standpipe tube diameter – 10 or 12, mm; - 1 – wiring kit for manual control,
or -2 – wiring kit for connection to the ÑÏÀ; 24Â – power-supply system voltage, V
INSTALLATION AND OPERATION INSTALLATION
Fig. 1. Nozzle assembly on the fuel standpipe
Fig. 2. Single-line schematic electrical diagram of fuel standpipe connection (switch with indication)
Fig. 3. F Single-line schematic electrical diagram of fuel standpipe connection (switch without indication)
Fig. 4 . Double-line schematic electrical diagram of fuel standpipe connection (switch with indication)
Fig. 5. Double-line schematic electrical diagram of fuel standpipe connection (switch without indication)
Fig. 6. Bore for switch mounting Literal wire marking interpretation:
r (ê) - red or brown
b(p) (ã(ô)) - blue or purple
y (æ) - yellow or orange
d (÷) - dark grey
y/b (r/b) (æ/÷ (ê/÷)) - yellow-black or red-black
ÅÍ1 - Posistor heater ÍÌÊ.ÎÒ015.200.000.00
FU1 - Fuse 15À
ÊÀ1 - Relay
SA1 - Switch with indication
R1 - Resistor
Õ1 - Plug connection
The nozzle is mounted to the standard fuel standpipe tube installed vertically in the fuel tank.
At the nozzle assembly on the standard fuel standpipe with a gasket of 1 mm in thickness its standpipe tube should be shortened by 4 mm for the purpose to maintain the depth of immersion into the fuel tank. In this case instead of regular gaskets two supplied pads with grooves are installed in such a position that they form a circular channel for the wires.
The nozzle assembly on the fuel standpipe is performed using wired and fixing arrangements of the delivery kit. Before nozzle assembly put insulation tube on the fuel standpipe tube, and thereafter set the nozzle on the same tube until bumping, secure it with two locking screws as shown in Figure 1. At the screws tightening it is required to install their splines in parallel with nozzle’s circular slots. For the locking screws fixation from self-unfastening set nozzle’s locking ring into the circular slot. If at the starting ignition the heater is not turned off by pressing the button it automatically shuts off in 10 minutes. Pass the wires through the channels in the rubber gaskets as shown in Figure 1. The wire length from the gasket edge to the male connector should be approximately 150 mm. The wire surplus wrap around the fuel standpipe tube over the insulation tube. Attach the wires with clampbands. The wire fixation to a metal pipe is implemented at insulation tubes’ location sites. Then attach the fuel in-line standpipe on the tank.
WARNING! At wire fixating stress application breaking them away from the nozzle is prohibited.
The nozzle connection to the vehicular power-supply system is conducted according to the single-line schematic electrical diagram (see Fig. 2 and Fig. 3) using the wiring kit (wire color marking is shown in the diagram). In this case the wires, connected with the negative pole of the power-supply system, are connected to the vehicle body (cabin, frame, etc.) very close to the connected nodes. The switch and LED with holder are mounted in a convenient for the driver point on the dashboard (bore dimensions for switch mounting are shown in Figure 6 and Ø6,5 mm holes are drilled for the LED holder installation). The relay and fuse are fixed under the cover on the dashboard. The wire from the nozzle’s connection plug to the cabin is laid along the existing wiring harness and fixed thereto by clampbands. The custom-made nozzles may be connected to the power-supply system according to the double-line schematic electrical diagram (see Fig. 4. or Fig. 5).