"M-RICS (Mitsubishi-Realtime Intelligent Control System)" and "MACH-DUET (Duct Burner Efficient Technology)" forms of gas engine technology.
M-RICS is MHI's uniquely advanced combustion analysis system and perfectly adapted combustion control system, which is carried out with the use of pressure sensors located within each cylinder. By making practical use of technology that directly detects the combustion pressure within the engine we have made it possible to dramatically reduce miss firing caused by engine knocking when compared other detection systems that employ vibrational techniques. Other companies limit knocking control of their engines to knocking sensors (vibration detection), and it is only the Mitsubishi MACH-30G which has brought into practical use technology that makes it possible to detect direct combustion pressure.
The MACH-DUET features a new type of boiler that produces three times more steam generation than traditional types through a combination of a gas engine exhaust gas boiler and a new type of duct burner.
For engines with a power output of 5500 kW, the steam generation rate is approximately 3ton/h when employing traditional exhaust gas and this steam generation rate can be increased to 7.64 ton/h by adding a duct burner and carrying out auxiliary combustion. Also, we are able to work with a range of steam pressure types running from saturated steam (0.78 Mpa) to super-heated steam (5.9 Mpa). The overall heat efficiency rate of heat recovery with traditional exhaust gas boilers is 57%, but this can be raised to 65% by combining it with auxiliary combustion. Further, by performing heated water recovery from the engine it becomes possible to achieve an overall heat efficiency rate of 80% or more. The MACH-DUET has been brought into realization through the power of MHI's Industries's double-fronted approach of engine technology and boiler combustion technology and we are sure that it accurately meets the varied steam usage needs of our customers.