The assembly spray nozzles, code 11.01213-0063.0, play a crucial role in the lubrication and cooling systems of the MAN L21/31 engine. Strategically positioned, these nozzles deliver fine, pressurized streams of oil or coolant to targeted areas such as pistons, cylinder walls, or valve assemblies. Their precise flow helps regulate temperature, minimize friction, and extend component life, making them indispensable for efficient and long-lasting engine performance.
The closing cover with code 11.01288-0075.B is a critical sealing component for the MAN L21/31 engine, used to enclose access points or internal chambers. Designed to resist oil pressure, temperature, and environmental contaminants, this cover ensures safe containment of fluids and prevents mechanical ingress. Its role in maintaining a sealed and controlled environment inside the engine contributes directly to operational reliability and reduced maintenance frequency.
The retaining rings, code EN3N108, are essential securing components used in fine boring operations within the MAN L21/31 engine. These rings are precision-engineered to hold key internal elements in position during machining or assembly, ensuring consistent tolerances and mechanical integrity. Their robust construction allows them to resist deformation and vibration, contributing to the accuracy and durability of bored interfaces—especially in high-performance marine engine applications.
The spring identified by code K 27210 is a precision-calibrated component that regulates the opening pressure of the fuel injection valve in the ZV40/48 diesel engine. This spring is responsible for ensuring that fuel is injected into the combustion chamber at the exact moment and pressure required for optimal combustion. Its tension characteristics must remain consistent over thousands of cycles, resisting fatigue and deformation. As a vital part of the fuel system, this spring contributes directly to combustion efficiency, power output, and emission control.
The self-locking nut, code number K 27417, is specially designed for secure fastening of the spindle (K 27401) in the starting valve system of the ZV40/48 engine. Its self-locking feature prevents loosening due to vibrations or pressure fluctuations, thus maintaining the correct positioning and alignment of the starting valve. Made from high-grade materials with anti-corrosive properties, this nut plays a critical safety role, ensuring the reliability of engine starts over prolonged operational cycles.
The complete inlet valve, coded K 27500, is a fundamental component of the air intake system in the ZV40/48 diesel engine. This valve governs the flow of fresh air into the combustion chamber, opening at precisely timed intervals to ensure optimal fuel-air mixture and efficient combustion. Built to endure extreme thermal and mechanical stress, the complete assembly includes the valve spindle, guide, springs, and seating surfaces. Its flawless operation is key to maintaining engine power, fuel efficiency, and smooth running under both marine and industrial load conditions.