The Liwei Nozzle Manufacturer!
Abosede is a leading company in the automotive parts industry, specializing in the development, production, and sales of diesel injection system components, including fuel pumps, injector assemblies, spare parts, and repair kits.
Why choose us
Rich experience
Our company boasts a highly skilled technical team, covering R&D, production, quality control, marketing, and customer service.
Product application
Our products are widely used in commercial vehicles, construction machinery, and diesel-powered equipment, reaching customers in multiple countries and regions worldwide and earning their trust and recognition.
Customized High-Pressure Solutions
We offer OEM customization services for specialized high-pressure pumps and AdBlue® injection systems, tailored to meet unique customer requirements for emissions compliance, power delivery, and special applications.
Sales market
Our global presence includes in Brazil, Ecuador, Peru, Colombia, Turkey, UAE, Iran, Morocco, Egypt, Lebanon, and Russia ,etc. helping us understand diverse market needs.
|
Parameter |
Value |
|
Nozzle Holes |
6 |
|
Nozzle Diameter |
0.12mm |
|
Opening Pressure |
18-20MPa (180-200Bar) |
|
Operating Voltage |
12V DC |
|
Max Pressure Resistance |
2000Bar |
|
Seal Type |
Taper Seat + O-Ring |
|
Connection Type |
EUI (Electronic Unit Injection) |
Single-hole nozzles: These nozzles have a single small hole through which fuel is delivered. They produce a fine mist of fuel droplets and are typically used in low- to medium-power engines.
Multi-hole nozzles: These nozzles have multiple small holes through which fuel is delivered. They produce a wider and more intense spray of fuel droplets and are typically used in high-power engines.
Spray-cone nozzles: These nozzles are designed to produce a cone-shaped spray pattern of fuel droplets. They are typically used in diesel engines, as they help to improve the mixing of fuel and air, which can improve combustion efficiency.
Fan-shaped nozzles: These nozzles are designed to produce a fan-shaped spray pattern of fuel droplets. They are typically used in gasoline engines, as they help to improve the distribution of fuel, which can improve combustion efficiency.
Pintle nozzle: These nozzles have a small pin that can be moved axially by a solenoid actuator, which controls the fuel flow by the time of opening and closing the pintle. They are used to provide precise and fine control of the fuel delivery rate, as well as to prevent leakage and dripping when closed.
Split-injector nozzles: These nozzles have multiple orifices, each dedicated to a specific engine cycle. They are commonly used in multi-cylinder engine and helps to precisely control fuel delivery to each cylinder.
Common symptoms of a failed fuel injection nozzle
Engine vibration or loss of power
Blocking or failure of the fuel injection nozzle may result in insufficient fuel supply, and consequently cause unstable idle status and lack of power of the engine.
Higher fuel consumption
A failure of the fuel injection nozzle may result in leakage in the fuel circuit or uneven fuel injection, leading to lower fuel efficiency.
More emissions
If the fuel coming out of the fuel injection nozzle is not properly atomized, the unburned fuel will increase pollutant emissions.
Abnormal noise
A mechanical failure in the fuel injection nozzle may produce abnormal noise.
Checking injection nozzles
Compare the injected fuel quantity
Using a cylinder comparison measurement and simultaneous exhaust measurement, the injected fuel quantity can be compared based on the drop in speed and the HC and CO values for the individual cylinders. In the best case, the values will be identical for all cylinders. If there are major deviations between the values, it may be that not enough fuel is being injected (a large quantity of unburnt fuel = high HC and CO values, whereas little unburnt fuel = low HC and CO values). The cause may be a faulty injection valve.
Read off and compare the voltage and the pulse duration
The injection signal can be depicted using an oscilloscope. For this purpose, connect the measurement line to the signal line, and the other line to a suitable ground pin. With the engine running, it is possible to read off the voltage and the pulse duration (opening time) from the signal pattern. When opening the throttle valve, the pulse duration must increase during the acceleration phase, and with a constant engine speed (around 3000 RPM) it must fall back to, or just below, the idle value. The results of individual cylinders can be compared with each other, and this may provide an indication of potential faults, e.g. a poor voltage supply.
Measure the fuel pressure and check the intake and exhaust systems for leaks
Other important tests are measuring the fuel pressure, in order to identify other components that may be faulty (fuel pump, fuel filter, pressure regulator), and checking the intake and exhaust systems for leaks, to prevent false measurement results. If the sensor has a 2-pin connector, it is most likely to be an inductive sensor. In this case, the internal resistance, a potential short circuit to frame, and the signal can be determined.
To do this, remove the plug connection and check the internal resistance of the sensor. If the internal resistance value is 200 to 1,000 ohms (depending on the reference value), the sensor is OK. If the value is 0 ohms, there is a short circuit, and in the case of M Ohm there is a break. The test for a short circuit to frame is carried out using the ohmmeter from a connection pin to vehicle ground. The resistance value must tend toward infinity. The test using an oscilloscope must result in a sinus signal of sufficient strength. In the case of a Hall generator, only the signal voltage in the form of a square wave signal and the supply voltage are to be tested. This must result in a square wave signal depending on the engine speed. We should repeat at this point that the use of an ohmmeter can destroy the Hall generator.
Shipping Made Simple
We understand that every customer has unique shipping needs. That's why we offer:
We're professional liwei nozzle manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to wholesale discount liwei nozzle for sale here from our factory.
F00VX50174 for 0445120270 0445120271 986435598, DLLA150P2330 for 0445120333 0445120431, DSLA158P974 for 0445120008 0986435502