PZD KamAZ: preheater - overview of the device, error codes, how to start, malfunctions

PZD is a pre-starting liquid engine heater for KamAZ vehicles, which provides engine heating for more efficient operation in cold weather. Also, PZD allows you to avoid icing of the glass inside the car. As you know, in winter, KamAZ drivers often experience problems due to temperature changes, dampness and failure of important parts. In this regard, it is impossible to do without installing a PZD, which is capable of operating uninterruptedly at temperatures from minus 45 to plus 60 degrees Celsius. At least in this range, there are no above-mentioned problems associated with glass icing and cabin freezing, and quick engine starting is also ensured.

Design and operating modes of KamAZ PZD

The classic design of the pre-heater for KamAZ vehicles includes the following components:

control system and sensors
DC motor
power supply and fuse
inlet/outlet tubes, gas inlet/outlet
fuel supply indicator
swirler
heat exchanger with tubes
disk
transfers
nozzle with housing
ignition with electrode and holder
fuel pump
solenoid valve
hoses for fuel outlet/supply
brackets
coupling
cooling system (fan)
bearing
bypass valve

The PZD-30 system also includes a remote control, with which you can control the operation of the heater in any position of the vehicle’s cabin, including when the cabin is tilted. The PZD-30 switch itself is located in the cabin and is fixed on a special bracket. This remote control system has the following operating modes:

in position I, the electric spark plug, pump motor and solenoid fuel valve are switched on
in position II, only the operation of the electromagnetic fuel valve and the electric motor of the pump unit is possible
in position III, the pump unit, namely its electric motor, as well as the electric fuel heater are activated
position 0 completely turns off the PZD.

KAMAZ heating fuel in the tank video

Heating diesel fuel Tips for motorists

Fuel heating for Kamaz

Folk way to prevent KAMAZ fuel from freezing

KAMAZ fuel coarse filter with heating.

Do-it-yourself electric diesel fuel pre-heater!!!

Making a diesel fuel heater of the “outer coil” type with your own hands

heating diesel fuel paraffin in the tank and fuel wire

Fuel check valve

Fuel heater for MAZDA BT 50 2.5 CD 4WD

Operation of Separ 2000 fuel filters

Also see:

KAMAZ 4350 dimensions
KAMAZ 5511 ans
KAMAZ 4325 rear axle
KAMAZ 56117 for euro truck simulator 2
KAMAZ 6540 dimensions
KAMAZ trucks on the ground
Hardware for KAMAZ
Generator g273 KAMAZ diagram
Installation of a tachograph on KAMAZ 6520
KAMAZ speed jumps
KAMAZ 6520 urea diagram
Maximum speed KAMAZ 53212
Inspection hole for KAMAZ
Controls KAMAZ 5410
Vibration on KAMAZ 4308

Home » Video » KAMAZ heating fuel in the tank video
kamaz-parts.ru

PZD parameters

The PZD is a compact and easy-to-use device installed in the cooling system circuit of the internal combustion engine. Below are the technical characteristics of the KamAZ pre-heater using the PZD-30 as an example.

Performance – 340 W
Fuel costs – 4.2 kg/h
Pumping unit electric motor model – ME252
Solenoid valve model – PZhD-30-101500
Fuel pump capacity – 1.2 kgf/sq.m. cm
Liquid pump capacity – 30 l/min
Air blower capacity – 90 kg/h
Model of an electric spark plug for igniting the fuel mixture - CH 423
Material of manufacture – stainless steel
Corrosion protection – yes.

Brief operating principle of KamAZ 14TS-10 PZD and diagram

The most favorable place for installing KamAZ PZD is the front cross member of the frame, where more efficient operation of this device is ensured, the essence of which is the supply of fuel from the tank from the fuel pump of the heater. The incoming combustible mixture is directed through the open solenoid valve towards the nozzle. Then a certain amount of fuel is injected into the internal burner of the heat exchanger of the preheater.

As the fuel spreads, it mixes with the air flows emanating from the fan. The fuel mixture begins to ignite and burn, which heats up the coolant. The more combustion products that enter the oil crankcase, the higher the oil temperature.

Fuel accumulates in the heater tank, the amount of which increases depending on engine speed. If fuel does not flow from the tank, its supply can be activated manually - to do this, you need to use the fuel priming pump. According to safety regulations, regular monitoring of the condition of the fuel supply system is necessary to avoid leaks of the combustible mixture and coolant. So, in this case, attention is paid to the tightness of pipes, taps and other components.

Operation of the pre-heater on KamAZ is possible in several modes depending on the boiler temperature. For example, if it increases to 85 degrees, the PZhD switches to the blowing mode. Thus, the device can be turned on again only after it is completely turned off when it reaches 85 degrees.

KAMAZ heating fuel in the tank video

Fuel heating for Kamaz

Heating diesel fuel Tips for motorists

Folk way to prevent KAMAZ fuel from freezing

Making a diesel fuel heater of the “outer coil” type with your own hands

KAMAZ fuel coarse filter with heating.

Do-it-yourself electric diesel fuel pre-heater!!!

Air leak

homemade diesel fuel heating (connected, working!)

heating diesel fuel paraffin in the tank and fuel wire

Fuel check valve

Also see:

Chinese KAMAZ dump trucks
KAMAZ towbar euro disassembly
KAMAZ 6520 73 year of manufacture 2014
KAMAZ with clay
Star cars on the KAMAZ drive channel
Repair parts for KAMAZ cab
High pressure power steering hose KAMAZ
How to make a bed in KAMAZ
KAMAZ tires advertising
Off-road Ural vs KAMAZ video
Two oil levels in a KAMAZ diesel engine
KAMAZ rotation in Russia
Decals for car models 1 43 KAMAZ
Solnechnogorsk dismantling of KAMAZ trucks
KAMAZ Engine Plant

Home » Collections » KAMAZ heating fuel in the tank video
kamaz136.ru

How to work with PZD correctly

The presence of a characteristic hum during the operation of the diesel engine indicates that the process of fuel combustion continues, and exhaust gases exit through the exhaust system. If the system is working properly, there should be no smoke or open flames. If there are technical problems with the operation of the fuel rail system, the first step is to adjust the fuel consumption using the pressure reducing valve. Turning the valve to the left increases the fuel supply, and turning it to the right decreases it. Thus, the fuel supply system is debugged taking into account temperature changes. Correct settings will ensure uninterrupted heating and significantly reduce refueling costs.

Below is a detailed principle of working with KamAZ PZD, consisting of several stages.

The PZD turns on when the battery switch is activated. To do this, the operator activates the PZD switch button
To fill the system with fuel, the driver opens the valve on the fuel tank
After setting the knob to position III, the heating system is activated, the efficiency of which is adjusted depending on the ambient temperature
The handle is moved to the reverse position I until a characteristic sound appears, which indicates ignition of the fuel
Switching the PZhD into automatic continuous heating mode with the specified parameters.

Seasonal maintenance of the preheater (service C) in the fall:

Secure the pump unit, heat exchanger, pipes, and preheater outlet pipe.

The tightening torque of the pump unit mounting bolts is 44-53 Nm (4.5-5.4 kgf-m);

The tightening torque of the heat exchanger mounting bolts is 44-53 Nm (4.5-5.4 kgf-m);

The tightening torque of the M10 bolts of the pipe is 44-53 Nm (4.5-5.4 kgf-m); exhaust pipe bolts - 15-25 Nm (1.5-2.5 kgf-m).

Wash the channels and filters of the solenoid valve, the heater fuel tank tap, the preheater nozzle, clean the electrodes of the preheater spark plugs, the combustion chamber and the heat exchanger flue, check the operation of the preheater, and eliminate malfunctions (in the fall).

Before washing, disassemble the heat exchanger and remove carbon deposits.

Wash the solenoid valve filters in kerosene, the injector in acetone, and the remaining parts in diesel fuel.

Normal operation of the preheater is determined by the uniform hum of combustion in the heat exchanger and the release of exhaust gases without smoke or open flame.

If necessary, adjust the fuel flow using the fuel pump pressure reducing valve by doing the following: unscrew the cap nut on the fuel pump; loosen the locknut of the adjusting screw; By turning the adjusting screw to the right (the fuel supply increases) or to the left (the fuel supply decreases), adjust the heater operating mode.

After completing the adjustment, lock the adjusting screw with the locknut and screw on the cap nut.

To ensure normal operation of the heater, adjust the fuel supply when the ambient temperature is below zero.

After washing the car or fording in the cold season, remove water that has entered the air tract of the fan by turning on the pump unit for 3-4 minutes (put the switch to position III, having first disconnected the wire going to the electric fuel heater)

Installation and maintenance of PZD

It is best to install the pre-heater on KamAZ vehicles at a specialized workshop (service station) equipped with all the necessary equipment. Technical inspection of equipment is carried out before the onset of the winter season.

Before starting operation, it is extremely important to ensure the proper condition of the PZD components. This requires timely maintenance, and before leaving, it is recommended to check the system for functionality. To do this, you need to pay attention to the following components of the fuel rail and fuel system of the car:

Checking the level of anti-freeze fluid in the engine cooling system
Checking connecting nodes for leaks
Electric motor diagnostics, as well as checking for fuel leaks and open flames
Test run of the PZD for 20 seconds
When washing the car, water may enter the air fan. You can remove it using a pump unit, to turn it on you need to switch the pump to position III and wait two to three minutes.

Diesel fuel heating system for Kamaz vehicle

Diesel fuel heating system for a Kamaz vehicle.

The diesel fuel heating system of a KamAZ vehicle (hereinafter referred to as the system) is designed to heat fuel at the time of starting and operating KamAZ engines in winter. The system ensures engine operation in summer diesel fuel in winter at temperatures down to minus 200C and eliminates the need for diluting diesel fuel with kerosene .In the temperature range from minus 200C to minus 500C, the system ensures engine operation on winter diesel fuel. The system is connected to the vehicle’s power supply after the current indicator (ammeter) to the safety block. The system resource is at least 10,000 hours during a service life of three years. Fuel intake with The electric heater is supplied to KamAZ OJSC for installation on cars and buses during assembly on a conveyor belt.

Complete set: fuel intake with electric heater EPDTB-24/0.25, built-in electric diesel fuel heater EPDTV-24/0.2, harness, top gasket, bolt, washer, switch 26.3710-23.55, TU 37.003.1418-94, frame 603710116 TU 37003.701-75, clamp AZLK-254 2141-3724470.

Main technical characteristics:

Parameter name	Meaning
Rated supply voltage, V	24+4
Power consumption, W (+5%; -10%)At a flow rate of 40 l/h At a flow rate of 80 l/h	500700
Minimum fuel heating, 0C (+2) At a flow rate of 40 l/h At a flow rate of 80 l/h	3020
Weight, kg, no more	1,2

kizlyar-kemz.ru

PZD errors and their designations

A special light indicates the presence of errors in the PZD system. It flashes a certain number of times, which can be used to determine whether the equipment is malfunctioning. Below are the most common problems.

A single flash indicates that the heat exchanger is overheating and there are discrepancies in the gauges, which may indicate unreliable temperature information.
The light blinking twice indicates the number of engine activations consumed.
Flashing the light three times indicates a problem with the preheater. The reason may be due to flame interruption
The light flashes four times - this means a malfunction of the spark plug or the engine responsible for forcing the atmospheric flow
The LED lamp flashes five times to indicate that the flame sensor is not working properly.
Six times - incorrect operation of the overheating and temperature indicators
A seven-digit activation of the lamp indicates a malfunction of the pump and fuel system elements. It also wouldn’t hurt to check the control relay and heater
If it flashes eight times, then the reason is the signal contact between the PZD unit and the control panel
Nine times – low voltage or no voltage
Flashing ten times indicates the completion of the ventilation process, which can be turned on manually.