HomeAbout usContact usNews ReleaseTechnical Tips ReleasePhotographs

---

JFE Engineering has been developed world largest bore spark ignited GAS engine unit "E3G"

---

Since 2004, JFE Engineering Corporation has been executing a joint development of world largest four stroke gas engine with cylinder bore of 400 mm under the license of S.E.M.T.-Pielstick, France. As a base engine, SEMT-Pielstick PC2-6B type diesel engine was selected, considering its high efficiency and well-proven reliability, and then three-cylinder PC2-6B test engine was provided and installed for this gasification development at JFE Tsurumi Works.

At the beginning of 2006, engine performance reached to satisfactory results. And the efficiency of gas engine co-generation unit is expected to be 46% with lower Nox emission than 200 ppm (O2=0%). This value is best efficiency among this class of gas engine. For gas engine co-generation unit, major line-up is now planed to be two versions such as 7.2MW with 12cyl. engine and 9.6 MW with 16cyl. engine respectively.

Through gasification development, there applied two special features on this engine such as “ Spark Ignition System for bigger cylinder bore than 400mm ” and “ EGR(Exhaust Gas Recirculation) ”. In case of big cylinder bore engine, pilot fuel injection is a current ignition system for conventional gas engines, in order to avoid unstable combustion. This engine realizes stable combustion by optimization of pre-chamber and spark plug system. And then, any stock of pilot fuel oil can be omitted, and simple and low cost co-generation system can be realized. Moreover, by applying EGR, an engine tuning range becomes wider and world highest efficiency with less NOx emission is realized. In addition various excellent technologies such as Miller cycle etc. are also applied and good performance can be verified.

Currently JFE fabricates and constructs 300-1,400 kW class gas co-generation systems with Waukesha gas engine, U.S.A. However, recently in Japan, gas co-generation market is shifting to large power range over 6,000kW per unit for the purpose of ESP, PPS and ESCO business. JFE, therefore, intends to join this business field with this newly developed gas engine and aims to deliver 10 engines per year for Japanese and Asian market.

Further test is executed to finalize the specification of production engine in 2006. And from April 2007, an endurance test is planned to verify reliability and durability. JFE has been chasing high performance and reliability continuously to supply excellent engine to gas co-generation market and will contribute growth of this business area.