Gas system dedicated to diesel engines is a complex mechanism, the work of which depends on the coordinated cooperation between individual components. Injectors are responsible for supplying CNG/LPG to the interiors of the System. Together with the gas controller and the gas reducer, they constitute one of the most important elements of the system Gas injectors’ task is to supply gas to the intake system and eventually to the engine combustion chamber.

The key issue here is the release of precisely measured doses of CNG/LPG before they get into the engine. The applied dose of gas must be very precisely measured – it may not be too small or too large. All subsequent doses must be exactly the same, otherwise the engine would run unstably. The injector solenoid is responsible for this issue. The signal regarding the amount of the applied gas dose reaches the injectors from the Fuel Fusion controller (ECU). The solenoid decides about opening and closing of the injectors and as a result, about the size of the gas dose. It is very important that the injectors precisely, smoothly and quickly execute the instructions that reach them from the ECU.

When designing the Fuel Fusion Installation, we selected injectors that are efficient and durable. Their proper installation and timely servicing allow for trouble-free operation of the Installation for a long time.

The injectors are installed in the engine intake system. Their nozzles are placed in holes drilled in front of the turbocharger. Thanks to this,  LPG/CNG  supplied to the system mixes with air and together with it goes to the engine combustion chamber. It is necessary to place them away from elements that heat up during machine operation, so that they are not exposed to high temperatures.

The injectors are installed as close as possible to the turbocharger, thanks to which the CNG/LPG reaches it quickly, and from there, together with the air, it gets to the combustion chamber. The nozzles are fitted by pressing them in, without the need to use glue – the vaccum in the system ensures tightness and eliminates the risk of the System leaking.

It should be remembered that the injectors are an operational element of the System and after some time it is necessary to replace them with new ones. As a manufacturer of Fuel Fusion gas systems, we recommend replacing the injectors every 100,000 km or 1,400 mth. After this time, the injectors are worn out and can no longer be used. The injectors producers recommend the same term of use of device.

However, it is worth remembering that the condition of the injectors depends on many factors. The most important of them is of course the quality of the gas used. Unfortunately, gas is never 100% pure clean. This is why the gas filter is so important. Without it, all impurities would accumulate inside the system and  it could block the injectors. This is why it is important to remember to replace the filter with a new one on time.

During inspections, it is also necessary to check the solid attachment of all the elements of the System, including the injectors. Remember that correct installation of the system does not release us from this obligation. Even the best-tightened screws can become loose due to vibrations caused by the working machine. After some time, the gas injectors may no longer be so solidly fastened, which in extreme cases may lead to their mechanical damage.

One of the most important elements of every gas system are gas injectors. Their operation determines the correct dosage of LPG/CNG, and as a result, the proper operation of the engine. Their efficient communication with the controller, precision and repeatability of operation are absolutely priority issues.

Unfortunately, injectors are a operating elements and must be replaced regularly. Fortunately, you do not have to remember about it yourself. The Fuel Fusion gas system for diesel engines reminds you of the need to carry out service work with lights located on the switch and through sound signals. You should then visit immediately the authorized service for an inspection. Failure to fulfil this obligation could, in the long run, be associated with a threat to the safety of the System and the engine.

When designing Fuel Fusion, we chose injectors that are characterized by high efficiency, durability and reliability. However, it is important to remember that proper installation and regular service are essential for long-term and trouble-free operation of the system.