Jenbacher
Features / Benefits
Efficiency increase Based on the various improvements and the optimization of engine settings, the electrical efficiency has been improved by 0.5 to 1 percent point, depending on the engine version. The new increased efficiencies are integrated in the version tables.
Improved power unit Essential in enabling high peak firing pressures and low crevice volumes, the steel piston power unit offers superior strength for longer potential life and future high-power products. To optimize piston, ring and liner interaction, the steel piston and ring package was entirely redesigned. These power unit improvements have achieved the following benefits:
• Reduced blow-by gas flow • Stable operation down to 50 percent of load • Measured oil consumption as low as 0.2 g/kwh • Reduced coking / deposits in ring grooves • Longer oil filter life and longer blow-by life
Lead-free connecting rod bearing The connecting rod bearing is the highest loaded bearing in the engine. Due to its severe load exposure, this bearing requires high quality oil. To reduce this sensitivity, GE created a bearing made from lead-free material for our J624 gas engines. This new bearing offers the following advantages:
• Increased chemical resistance • Higher wear resistance
Enhanced engine cooling system Cooling of critical thermal loaded components, like the cylinder head and cylinder liners, has a large impact on the life and reliability of these components. Therefore, we upgraded the piping system and cooling water pumps of our J620 and J624 gas engines to improve cooling system efficiencies.
Gasket-free intercooler In the past, the hot country versions of our type 6F (J612, J616 and J620 hot country versions) series gas engines required a special intercooler with gaskets placed between the water and gas site.
Our new improved intercooler design eliminates the need for these gaskets, and realizes the following benefits:
• Lower maintenance costs • Reduced downtime • Increased reliability
Enhanced cylinder head GE has improved our type 6 cylinder heads in terms of quality and lubrication. Together with our supplier, we enhanced the casting process of these cylinder heads to substantially reduce the probability of casting defects. In addition, we altered the cylinder head geometry to obtain a more uniform lubrication of the left and right side. As a result, the cylinder head reliability has been significantly increased.
Innovative blow-by system The blow-by system recycles the crankcase vent back to the inlet air duct in order to avoid pollution. The latest enhanced version – available for all type 6 F, G and H engines – comprises a novel pre- separator that reduces the oil load on blow-by elements. In addition, the new filter offers twice the capacity of the previous version. The enhanced design offers the added advantage of allowing for the exchange of the filter insert only, instead of the entire blow-by element. The benefits achieved through these system enhancements include:
• Extended blow-by filter life • Fewer turbocharger and intercooler fouling occurrences • Reduced maintenance costs
Additional generator options We have extended the options available for our J620 and J624 series gas engines with a TDPS model. This generator contains forced oil lubricated sleeve bearings and an insulation F used to B. In addition, its innovative rotor design signifi- cantly increases inertia, and an extremely stiff casing reduces modal vibration by as much as 80 percent. These generator improvements offer the following benefits:
• Significantly increased insulation • Reduced maintenance costs by up to 50 percent • Increased reliability and reduced downtime • Significantly improved island mode performance • Conformance to Entso-E Grid code
* J624 engines only ** Hot country versions
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