- RT flex uses common rail fuel injection through solinoid valves . ME uses FIVA valves to actuate hydraullic piston for fuel injection.
- RT flex uses 200 bar servo oil rail for exhaust valve actuation while ME uses FIVA\ELVA valves for hydraulic actuator operation
- RT uses conventional fuel pumps to pressurize common rail via camshaft and engine driven servo oil pumps to operate actuator and solenoid valves. Me uses only engine driven servo oil pumps to actuate both fuel pumps and exhaust valves
- RT flex uses four electronic valves one for exhaust valve opening and other 3 for fuel injection per cylinder.
- RT flex has a small camshaft for fuel pumps while ME has no camshaft.
- RT flex uses FCM 200( Flex control module) ME uses MPC
1. High cost: Manganese bronze is a costly alloy, making it less economical for large propellers. 2. Low strength-to-weight ratio: Compared to other propeller materials like nickel-aluminum bronze or stainless steel, manganese bronze has a lower strength-to-weight ratio. 3. Susceptible to corrosion: Manganese bronze can corrode in seawater, especially when exposed to high velocities and turbulence. 4. Poor cavitation resistance: Manganese bronze is more prone to cavitation damage than other materials. 5. Difficult to cast and machine: Manganese bronze is challenging to cast and machine, making it less desirable for complex propeller geometries. 6. Limited weldability: Manganese bronze has poor weldability, making repairs and modifications difficult. Nickel-aluminum bronze or stainless steel are commonly used for propellers due to their: - High strength and durability - Excellent corrosion resistance - Good cavitation resistance - Ease of casting and machining - Weldability
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