What is the main tank for the UAZ hunter. UAZ Hunter - how to protect the right tank from overflow. Fuel tanks Uaz Hunter
Filling the tanks with fuel is carried out separately in order to fill the tanks completely: first, the main tank is filled (during refueling, the fuel is also partially poured into the additional tank), then the additional tank is filled. Fuel is consumed from both tanks in approximately the same way, the tanks work as communicating vessels.
Installation requirements:
- Main tank cap ( without valve, access atm. there is no air into the tank through it)
- Additional tank cover ( with valve, access atm. air in the tanks is carried out through it)
- Fuel receiver of the main tank (close off the communication of the tank with the atmosphere, tube "Air").
Addendum: on a Scania vehicle (according to theory), an additional tank is consumed first due to discharging, and then the main fuel tank.
System advantages:
Easy to install this connection diagram. There is no need to purchase a fuel intake for an additional tank. There are no additional connections to the car's fuel system - therefore, there is no possibility of airing it. Simplicity and reliability of the system.
Disadvantages of the system:
At very low temperatures, there is a possibility of freezing of fuel in the banjo bolts and the overflow hose, which will make it impossible for fuel to flow from tank to tank and balance the pressure in the main tank with atmospheric. If the main tank closes as tightly as possible, and the pressure in it cannot equalize with the atmospheric pressure, external squeezing of the tank will occur. The tank will shrink inward. With a large number of compression and decompression cycles, the main tank may crack. To avoid this, when the hose freezes, it is enough to simply open the air supply to the tank: open the tank connection with the atmosphere through the fuel receiver ("Air" tube) or by installing the cap from the additional tank ( with valve, access atm. air in the tanks is carried out through it).
On UAZ Hunter cars with a ZMZ-409 Euro-2 engine, a fuel supply system is used without a valve for switching fuel tanks. Fuel supply is carried out by a submersible electric petrol pump (submersible module) installed in the right fuel tank.
Fuel supply system of the ZMZ-409 engine on the UAZ-315195 Hunter.
From the fuel tanks, through the fine filter, the fuel enters the fuel rail, the relative pressure in which is maintained by the pressure regulator at 300 kPa. The increased fuel pressure eliminates the appearance of air bubbles and gasoline vapors in the fuel line, which interfere with the normal operation of the injectors.
The fuel injectors, which are fast-acting precision valves (normally closed), open to inject fuel into the engine intake pipe. The opening-closing of the injectors is carried out automatically according to the operation sequence of the corresponding output channels of the electronic control unit.
The injectors inject fuel into the hot and closed intake valves of the engine, which improves the quality of the air / fuel mixture. The control unit sets the duration and phase of fuel injection depending on the engine operating mode, crankshaft speed and load.
Excess fuel in the rail is discharged through the pressure regulator drain and the jet pump into the right tank. At the same time, fuel flows from the left tank through the jet pump to the right tank by injection.
After any maintenance or repair work on the fuel supply system of the ZMZ-409 engine related to tightening the connections, removing or replacing parts and assemblies, it is necessary to check the tightness of the system.
Leakage in the joints is eliminated by tightening the joints or replacing defective elements. Tightening of steel fuel pipe fittings should be done with a torque of 27 + -7 Nm. Tighten the clamps of the rubber hoses with a torque of 3.5 + -0.5 Nm.
Signs of a malfunction of the fuel supply system of the ZMZ-409 engine.
Clogging of the mesh filter of the submersible module in the right fuel tank, fine fuel filter, the presence of dirt and mechanical impurities in the fuel tanks are manifested in the deterioration of the dynamics of the car, unstable engine operation, primarily at high loads.
If these symptoms occur, in order to avoid the failure of the submersible module and the fuel one, immediately flush the right fuel tank and the submersible module sieve filter, and replace the fine fuel filter.
At ambient temperatures below 0 degrees, signs of clogging can be caused by the presence of water and its freezing in the power system. If water is found in the fuel, drain it and flush the fuel tanks with fuel lines with clean gasoline, and replace the fine fuel filter. If, after carrying out these measures, the nature of the engine operation has not changed and the unstable engine operation is observed, then the following work must be carried out -.
Fuel tanks Oise Hunter.
The fuel supply system of the UAZ Hunter includes two fuel tanks of the same volume. The capacity of each is 35 liters. Maintenance of fuel tanks consists in periodically flushing or replacing the filter of the submersible module in the right tank, flushing the filter in the receiving tube of the fuel level indicator in the left tank and the tanks themselves. Periodically check that the tanks are securely fastened and, if necessary, tighten their fastening bolts. For flushing, remove the fuel tanks from the vehicle.
The filter of the submersible module or the receiving tube of the fuel level indicator can be flushed without removing the tank from the vehicle; in this case, remove the submersible module or indicator through the hatch in the floor of the body.
Fuel tank caps must be kept clean and tightly closed. The catalog number of the sealed stopper of the fuel tanks of the Uaz Hunter is 31602-1103010. Also, plugs 2108-1103010-11 are suitable for fuel tanks, provided that they are completely sealed.
In order to reduce the emission of fuel vapors into the atmosphere, a fuel vapor system is installed on UAZ Hunter vehicles. The left fuel tank communicates with the atmosphere through a separator, valve and adsorber.
During the operation of the car, you must pay attention to:
- the presence of a sharp smell of gasoline in the passenger compartment, engine compartment in places where fuel and steam hoses and pipes pass. If present, replace the adsorber;
- correct installation of the adsorber purge solenoid valve;
- cracks and damage to the adsorber - if any, replace the adsorber;
- pinched or damaged fuel and steam hoses, damaged and leaking pipes and hoses must be replaced.
Fuel rail.
Designed for connecting the fuel line to the engine intake tract and for installing injectors. The fuel rail is a through pipe with four holes for connecting and fixing the inlet fittings of the injectors.
On one side of the pipe, a supply fuel line is connected, on the other, a return fuel line with a fuel pressure regulator. The fuel outlet fittings BOSCH 0 280 150 560 or SIEMENS 6354 ZMZ DEKA1D are pressed through the O-rings by the fuel rail to the holes in the cylinder head.
Fine fuel filter.
The fuel supply system is equipped with a fuel filter. It is designed as a non-collapsible disposable filter cartridge. Replace the fuel filter every 20,000 kilometers or in the event of the above malfunctions.
Fuel pressure regulator BOSCH DR-L 0280160258 or equivalent.
Designed to maintain constant fuel pressure in the fuel rail and the throttle space of the intake pipe. The fuel pressure regulator consists of the following elements: a housing with a pressure chamber, inlet and outlet fuel connections, a fuel return control valve mounted on a diaphragm, and a vacuum chamber with an air connection.
The fuel pressure regulator is attached through an inlet threaded nipple to the fuel rail drain hole, and its outlet nipple is connected through a drain line to the jet pump. The air connector of the fuel pressure regulator is connected with a thin rubber hose to the connector screwed into the receiver of the intake pipe.
Increased fuel pressure, more than 300 kPa, manifests itself in the engine fuel rail increased consumption fuel, smoky engine exhaust. In case of these signs, you should clean the jet pump, blow out the return fuel lines from the pressure regulator on the fuel rail to the right tank. Replace the pressure regulator and the electric fuel pump if necessary.
The fuel supply system of the ZMZ-409 engine on the UAZ Hunter is equipped with a jet pump. It is designed for forced transfer of fuel from the left fuel tank to the right one. The jet pump is an injector, the flow channel of which is connected to the fuel drain line to the tank, and the injection channel is connected to the fuel intake line. Secured to the fuel hoses at the right frame side member.
Check the pump and its connections for leaks periodically. If there is no fuel transfer from the left fuel tank to the right one, remove the jet pump and turn out its nozzle, rinse it with clean gasoline and blow it with air.
The jet pump is made in the form of an injector, the flow channel of which is connected to the drain line coming from the engine, and the injection channel is connected to the fuel intake line of the left tank.
Only in the Hunter is the jet pump built into the fuel module cover.
Fuel tanks equipped with sludge drain plugs are located on the left and right between the frame side members and the side panels of the body.
On vehicles equipped with an injection engine, a fuel supply system is used without a valve for switching fuel tanks. The absence of a tap excludes the possibility of disruption of the water supply due to its untimely switching.
Fuel is supplied to the fuel pump from the left tank through the intake pipe mounted on the fuel level sensor. As fuel is consumed, the right tank is automatically replenished from the left one due to the resulting vacuum, since the right tank does not communicate with the atmosphere, and the left fuel tank communicates with the atmosphere through a separator with a valve. Thus, in the presence of fuel in the right tank, the consumption initially comes mainly from the right tank.
Excess fuel drawn back by the fuel pump enters the right tank through the fuel drain line.
Fuel tank filler plugs are blind, provide a hermetic seal, exclude possible leakage and fuel evaporation.
It was not there, they do not provide a tight seal plug and gasoline runs from the neck of the right tank.
The caps themselves are made with ratchets, which makes it impossible to tightly close the tank necks.
How to deal with this? - The manufacturing plant, that is, Ulyanovsk, completely refused to give an answer to the technical question posed, having kicked it to the official dealer. (weirdos with the letter M).
We take the Lovato solenoid valve from gas equipment cars (it just serves as a gasoline cutter).
You can use it manually by screwing in the bolt to the end, we open the valve by unscrewing it and close it.
We install on the fuel intake tube from the left tank.
It turned out not so hot, but it works great, you need to buy adapters at an angle of 90 degrees, otherwise such loops turned out, in short, it is impossible, because the hose is kinked.
And so, the problem is solved and tested.
Can a patent be issued?)))
The continuation did not keep you waiting, the hoses are a temporary phenomenon, anyway, an inflection is formed.
Since morning, 3 degrees of frost, the sun is shining, fluffy snow falls from the roof of the car, blown away by a light breeze, my design idea works))).
To implement this idea, it took a little less than half a meter of 8 mm copper tube, a 5/16 flaring set with a pipe cutter and a pipe bender for copper pipes 6-8-10 mm.
UAZ Hunter replaced the UAZ-469 in 2003. Recently, this car has been modified several times. This "hunter" is in great demand among residents of remote regions of the Russian Federation. This vehicle is also used for military purposes.
External features
Solid domestic SUV
Vehicle length - 4100 mm, width (without mirrors) - 1730 mm, height does not exceed 2025 mm. The original body design, good interior, high technical capabilities make the UAZ Hunter a universal vehicle.
As for the wheelbase, the Hunter is equipped with front and rear wheels with the same width - 1465 mm. The weight of this vehicle is 2550 kg. Fuel tank capacity - 70 liters. There are 5 seats in the UAZ Hunter cabin.
If we consider the comfort of this vehicle, then it should be noted that the doorways are narrow, so getting into the car is not very convenient. The chairs can be adjusted. As for the interior, it has a classic character. The finish can be easily wet cleaned. Noise insulation of the car is low, which is especially felt when driving at high speed. The SUV in question is equipped with a powerful stove that quickly warms up the interior in winter.
Often, the owners of this vehicle independently install a 2 quiet stove for the back row. This is due to the fact that the standard heating unit is equipped with a noisy fan.
Technical capabilities
UAZ Hunter is in great demand due to its high technical characteristics. This car can be equipped with:
- gasoline engine;
- diesel power unit.
Base 16-valve Hunter engine
The basic package includes the ZMZ-409.10 gasoline engine. It has 4 cylinders with a volume of 2.7 liters. The power unit is located in the front of the body, it is equipped with a 16-valve timing and a fuel injection system. The manufacturer recommends that the SUV in question be filled with gasoline of a brand not lower than AI-92. The maximum engine power is 128 hp. from. The peak torque is considered to be 209.7 Nm. This limit can be reached at 2500 rpm.
If you use the Hunter in mixed mode, the gas mileage will be more than 13.2 liters per 100 km. It should be borne in mind that the dynamic characteristics of the car are weak. The maximum speed of this SUV is no more than 130 km / h. For a starting acceleration from 0 to 100 km / h, it will take more than 35 s.
If we consider the diesel version of the UAZ, then it is equipped with a ZMZ-5143.20 engine. Such a power unit has 4 cylinders and a volume of 2.2 liters. The package also includes a 16-valve timing and fuel injection system. The maximum power of such an engine is 113.5 liters. from. Peak torque can be reached at 270 Nm.
If we compare gasoline and diesel engines in terms of fuel economy, then option 2 of the engine is considered more attractive. On the combined cycle, the fuel consumption is 10.6 liters per 100 km. As for the dynamics, the diesel unit is significantly inferior to the gasoline counterpart.
These models are equipped with a 5-speed manual transmission Hyundai Dymos. It is several times superior to the domestic version that was previously installed on the UAZ. It should be noted that the foreign box also has negative characteristics. Often it makes noise and makes a creak when switching.
Reliability of power units
A gasoline engine is more reliable than a diesel engine. At the same time, both motors easily endure winters, providing the right amount of traction when driving. Hunters are equipped with a durable chassis. The following items are ahead.
- Spring suspension.
- 2 trailing arms.
- Traction.
- Stabilizer.
The feed of the SUV is supported by 2 longitudinal springs. Hydropneumatic double-acting shock absorbers are provided at the front and rear. The front wheels have ventilated disc brakes and piston calipers. The rear wheels are equipped with drum brakes. The SUV is equipped with a power steering.
It should be noted that this vehicle has a system all-wheel driverepresented by a two-stage gearbox with axles. The constant mode is characterized by the supply of traction to the rear axle. If necessary, UAZ owners can rigidly block the front axle.
In terms of cross-country ability, the Hunter is considered a versatile vehicle. If the car is needed to overcome off-road, auto mechanics are advised to give preference to the diesel option. The SUV in question feels great on country roads. But if the car is still stuck in mud or snow, the help of a tractor will be required.
It is necessary to take into account that you cannot drive for a long time on off-road tires with factory tires. Therefore, it is recommended to purchase a set of special all-terrain tires. Motorists note that when driving at a speed of more than 100 km / h, loud noise and creaking are heard in the cabin. It is easy to control the Hunter, however, more actively you will need to turn the steering wheel to sharp turns... When braking, take into account the short braking distance when dropping from 100 km / h to 0, especially if the car was moving faster than 60 km / h.