Wyniki wyszukiwania - BazTech

1

Evaluation of regenerative capabilities of piezoelectric fuel injectors

Stoeck Tomasz

Przegląd Komunikacyjny

|

2023

|

R. 78, nr 9/10

15--20

EN

The article presents the issues related to the regeneration of injectors with piezoelectric actuators, taking into account existing technological constraints and the availability of original spare parts. The range of required maintenance operations among leading manufacturers of fuel systems was compared, as well as the types of diagnostic tests conducted in separate laboratory facilities. Examples of measuring devices, which should be considered as standard and optional equipment in workshops operating in this sector, were provided. Using the results of our own research, it was demonstrated that the regeneration process can be effectively carried out, even when it is necessary to expand existing procedures.

PL

W artykule przedstawiona została problematyka regeneracji wtryskiwaczy z siłownikiem piezoelektrycznym, uwzględniając istniejące ograniczenia technologiczne i dostępność do oryginalnych części zamiennych. Porównano zakres wymaganych czynności obsługowych u czołowych producentów aparatury paliwowej, jak również rodzaje testów diagnostycznych przeprowadzanych na odrębnych stanowiskach laboratoryjnych. Podano przykłady urządzeń pomiarowych, które powinny stanowić standardowe i opcjonalne wyposażenie warsztatów działających w tym sektorze usług. Na przykładzie badań własnych wykazano, że proces regeneracji może być skutecznie prowadzony, nawet przy konieczności rozszerzenia istniejących procedur.

2

Repair methodology of a piezoelectric injector utilizing components obtained from selective decomposition

Stoeck Tomasz

Combustion Engines

|

2023

|

R. 62, nr 3

63--67

EN

The paper presents an example of regeneration of a common rail piezoelectric fuel injector, which was carried out with using used parts. The most important stages of maintenance activities are listed, as well as the types of diagnostic tests performed on separate test benches. The obtained results indicate that this process can be effectively carried out with existing technological problems and lack of support from the manufacturer. At the same time, it was shown that, contrary to popular belief, cannibalisation does not have to be limited only to minor elements, but also to key components important from the point of view of the satisfactory technical condition and correct working of the fuel injector during further operation.

3

Problems of regeneration of modern piezoelectric fuel injectors

Stoeck Tomasz

Combustion Engines

|

2022

|

R. 61, nr 4

3--8

EN

The paper presents a method of testing piezoelectric fuel injectors in modern common rail systems, which allows them to be repaired almost to the full extent. The obtained results indicate that this process can be effectively carried out, even taking into account the existing technological limitations. The most important stages of the implemented activities are specified, first of all the scope of required maintenance activities in the pre- and post-assembly stages, as well as the types of diagnostic tests carried out on separate test benches. Although the presented analysis concerns a specific example, individual conclusions and observations can be applied to fuel injectors from other manufacturers, in which the actuator is not replaceable.

4

Method for testing modern common rail piezoelectric fuel injectors

Stoeck Tomasz

Combustion Engines

|

2021

|

R. 60, nr 3

31--36

EN

The paper presents the author's own method for testing piezoelectric common rail fuel injectors, which for many years were considered non-repairable components. This was mainly due to the lack of availability of spare parts and dedicated measuring equipment, enabling full diagnostics under test bench conditions. As a result, their workshop and laboratory servicing was very limited, as effective disassembly concerned basically only the plunger and barrel assembly (needle with nozzle) for selected reference models. The situation has now improved to such an extent that an author’s own regeneration procedure has been proposed with the replacement of the most important controls and actuators. The tests were carried out on the example of Siemens VDO Continental PCR 2.3 fuel injectors from one engine, listing the most important stages of this process, including the correction of fuel dosage and returns.