Are you waiting months for DEF pumps and fuel injectors?

Published on
April 10, 2024

Now you can get stock fuel injectors from Lynx Emissions. Get Bosch quality and reliability from your local Lynx Emissions branch.

What are diesel fuel injectors?

If you’re running a diesel engine, you’re probably aware that diesel fuel must get delivered into the engine by injectors with the right:s

  • Timing
    • The fuel has to get injected at the right time.
  • Misting or atomization
    • Injector nozzles have different numbers and sizes of opening in them.
  • Mixing
    • Fuel is mixed in against the piston heads
  • Air Utilization
    • Highly pressurized air is also mixed in by the injectors
  • Quality
    • Different injectors produce different qualities of mixed and injected fuel.

How do Injectors impact emissions?

Depending on how the injection occurs, different ratios of nitrogen oxide and diesel particulate matter are produced by the engine. If your injector is over fueling, not atomizing properly, or firing early or late, this is going to give you an improper burn. Improper burned fuel will start adding more and more soot to your aftertreatment system, which can cause your DPF to fail.

Are there different kinds of diesel fuel injectors?

Reductions in emissions targets have encouraged injection technology improvements, such as increased fuel pressure. Several injection nozzle designs and different actuation methods have been developed for use with various fuel injection systems:

Pump-Line-Nozzle Injection Systems

In pump-line-nozzle (P-L-N) diesel fuel injection systems, the pump is connected with the injection nozzle through a high-pressure fuel line. The P-L-N system can utilize in-line, distributor/rotary, and unit injection pumps. In its "classic" version, the system is controlled mechanically through specialized components such as the governor. In newer versions, several parameters are controlled electronically. The P-L-N system is being displaced by other fuel injection system types in new engine designs.

Unit Injector & Unit Pump Systems

In unit injector and unit pump injection systems, a separate pump serves each engine cylinder. While advanced, electronically controlled unit injector systems with the capability for multiple injections and rate shaping have been developed, unit injectors are gradually replaced by common rail technology.

Common Rail Fuel Injection Systems

In the common rail system, fuel is distributed to the injectors from a high-pressure accumulator, called the rail. The rail is fed by a high-pressure fuel pump. The pressure in the rail, as well as the start and end of the signal that activates the injector for each cylinder are electronically controlled. These controls are either done by a solenoid or a piezoelectric ceramic. Advantages of the common rail system include flexibility in controlling both the injection timing and injection rate.

As pressure increases into the cylinder, the fuel is more finely atomized, which increases burn off rate, which reduces harmful emissions.

Why do diesel fuel injectors need to be replaced?

Nozzle deposits

Build up of different minerals leading to degradation of the spray pattern from your injector nozzle. This means a reduction of effective fuel flow, which can lead to a reduction of power.

Internal Injector Deposits

Metal carboxylates, carbonaceous, or amide lacquering deposits found upstream from the tip that will disrupt the flow of fuel through the injector.

These deposits will accumulate with normal wear and tear, and all of this leads to poor combustion, or a complete lack of combustion in your diesel engine.

Do I have to replace all the injectors at the same time if only one has failed?

While you can purchase a single injector, to give your diesel vehicle the maximum uptime, we recommend replacing them all at the same time. If one injector purchased around the same time fails, the rest are likely to start failing soon.

Can I get my injectors tested with Lynx Emissions?

Yes, check with your branch for lead times.

What kind of lead time am I looking at for replacement injectors?

Many common injectors are available in 1 -2 days.

Can I talk to someone about a replacement or rebuilt injector?  

Yes!

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