Pistons

The main product of Złotecki are pistons and cylinder sets for internal combustion engines.

Złotecki produces pistons for:

  • diesel engines (compression-ignition engine),
  • petrol engines (spark ignition),
  • air brake system/industrial compressors,
  • for special applications , e.g. in aircraft engines

Our products are characterized by:

  • making castings from certified aluminium alloys of the highest quality in our own foundry
  • processing in accordance with the highest technological standards on specialized machines,
  • using high-tech tools for processing,
  • application of modern coating technologies,
  • detailed quality control at each production stage,

Diesel engine pistons

Pistons for diesel engines are made in the diameter range 75 - 160 mm. Due to the design of these engines, the pistons can carry higher mechanical loads than other types of pistons.

For turbocharged engines, pistons with cast-iron inserts are made for the first sealing ring in "Alfin" technology. In some types of diesel engine pistons, steel compensation inserts are also installed in the piston shell. In order to ensure the highest quality, graphite, molybdenum and other coatings are also made on the surface according to customer specifications.

Złotecki is a co-owner of the intellectual property rights to a proprietary technology developed within the R&D project TANGO2/340272/NBBIR/2017, carried out in cooperation with the Silesian University of Technology (Project Leader: Prof. Anna Janina Dolata, DSc, Eng.). The technology is dedicated to the manufacturing of advanced composite inserts designed for local reinforcement of aluminium castings.

The results of this project enable the replacement of conventional Alfin inserts with a modern composite insert containing silicon carbide (SiC) particles. This solution significantly improves the durability and wear resistance of pistons used in diesel engines, particularly in areas subjected to the highest thermal and mechanical loads.

Pistons for petrol engines

Pistons for petrol engines are made in the 60-150 mm diameter range. The Złotecki company produces pistons for gasoline engines for passenger cars.

Air compressor pistons

Pistons for air compressors are made in the 60-130 mm diameter range. Pistons of this group are designed both for stationary compressors and for compressors of truck braking systems.

Special pistons for two-stage compressors are also produced.

Pistons for special applications

Pistons designed for high performance and aircraft engines can be made from aluminium alloy forgings dedicated to pistons heavy loaded during operation.

Between 2013 and 2015, Złotecki participated in a research project focused on the development of an innovative composite piston material based on an Al–Si alloy reinforced with silicon carbide (SiC) particles. The primary objective of the project was to create a solution offering exceptionally high durability of critical working surfaces.

As a result of the project, a complete machining technology for composite components was developed. Through close cooperation with INNOMAT Sp. z o.o. — a spin-off company of the Silesian University of Technology — Złotecki has gained the capability to manufacture advanced composite pistons.

Such pistons are characterized by outstanding wear resistance, particularly under conditions of intensive friction. Their performance has been validated in demanding seizure tests conducted on piston air compressors, providing clear evidence of their effectiveness and reliability in real-world applications.