The sealing element identified by code number K 16105 is specifically designed to ensure airtight and fluid-tight connections between components K 16102 and K 16150 within the Sulzer ZV40/48 engine. Effective sealing is critical in high-pressure engine systems to prevent leaks of lubricants, fuels, or gases that could lead to performance issues or mechanical failure. Manufactured from heat- and chemical-resistant materials, this seal maintains its integrity under intense operational conditions. Regular inspection and timely replacement of this sealing component are vital for maintaining system efficiency and protecting surrounding parts from wear or contamination.
The plate marked with code number K 16213 is a structural and protective component designed for the control room casing of the Sulzer ZV40/48 engine. This part plays an essential role in enclosing and shielding sensitive control equipment from external contaminants, mechanical damage, and environmental stress. Crafted from durable materials and precision-engineered to fit seamlessly within the control room assembly, the plate contributes to the overall stability and integrity of the engine’s monitoring and regulation systems. Its presence ensures that electronic and control components remain secure, enabling consistent performance under demanding operational conditions.
The cover support, designated by code number K 16273, provides structural stability and precise alignment for the front cover of the Sulzer ZV40/48 diesel engine. This component is essential for maintaining the secure fit of the front casing, which shields vital engine components from environmental exposure and mechanical wear. Engineered for durability, the support ensures that the front cover remains firmly in place during engine operation, minimizing the risk of misalignment or damage due to vibrations. Regular maintenance of this support helps preserve the engine’s overall reliability and structural coherence.
The tubular sealing with code number K 16226 is specifically designed to work with the side casing K 16221 on the Sulzer ZV40/48 engine. Its primary function is to provide a reliable and flexible seal that prevents the leakage of oil, gases, or other fluids at the interface between the casing and surrounding components. This sealing element is crucial for maintaining pressure balance and system integrity under high operating temperatures and vibrations. With durable, heat-resistant materials, the tubular seal ensures optimal engine performance and helps extend the life of adjacent parts.
The side cover with integrated safety valve, marked with code number K 16100, is a multifunctional component of the Sulzer ZV40/48 diesel engine. It not only serves as a structural enclosure to protect internal engine elements from external contaminants and mechanical damage but also incorporates a built-in safety valve that relieves excess pressure from the engine’s crankcase. This dual-purpose design ensures both structural integrity and enhanced operational safety. Made from robust materials and precision-engineered, this component plays a vital role in maintaining a safe and efficient engine environment during continuous operation.
Author: Dr. Nenad Končar, M.Sc.Eng.
Date: May 23, 2025
As global demand for electric vehicles and renewable energy reaches historic highs, China is once again taking the lead — this time with sodium-based batteries. While most of the world still relies on lithium-ion technology, Chinese manufacturers are introducing batteries that use cheaper and far more abundant sodium — an element that can be derived from ordinary sea salt.
Mopeds as Drivers of Change
At the center of this technological shift are electric scooters, popularly known as "little electric donkeys," a vital means of transportation in many Asian cities. Yadea, China's largest two-wheeler manufacturer, has already launched three sodium-powered scooter models and is developing fast-charging and battery-swap infrastructure. The goal? Affordable and safe electric mobility for millions of daily users.
Why Sodium?
Sodium-ion batteries aren’t new — they’ve been in parallel development with lithium-ion for decades. However, recent lithium shortages and price spikes (with lithium sources concentrated in only a few countries) have reignited interest in sodium. The advantages are clear: sodium is about 400 times more abundant than lithium, more stable at high temperatures, and less prone to catching fire.
Shorter Range, Greater Safety
The main drawback of sodium-ion batteries is their lower energy density. While lithium-ion batteries are ideal for long-range cars, sodium is better suited for two-wheelers and stationary systems. That’s why an increasing number of Chinese cities — such as Shenzhen — are becoming “battery-swap cities,” aiming for large-scale implementation of sodium technology in everyday transportation.
Energy Storage – The Real Battleground
The greatest potential for sodium-ion batteries may lie beyond mobility — in energy storage systems. Chinese power grid operators already use sodium batteries to balance the grid and integrate renewables. The first large-scale energy storage station in southern China now uses sodium cells — powering up to 1,500 households.
Europe and Croatia: Where Do We Stand?
While China invests massively in R&D and production infrastructure, Europe is still seeking a clear strategy. Croatia — with its existing industrial base and engineering expertise — could claim a role in the supply chain, especially by developing container-based solutions for stationary storage.
Conclusion: Time to Diversify
Lithium will remain dominant for some time, but sodium is opening the door to a new era of energy security and sustainability. Two-wheelers may just be the beginning — but the real battle for energy independence and technological leadership is already underway in labs, factories, and strategic plans.
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