| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce costs, to simplify a configuration, and to operate an engine stably by maintaining an air ratio of an air-fuel mixture to a desired air ratio even if a heating value of fuel gas changes significantly. <P>SOLUTION: An engine system includes: an engine output control part H1 for controlling an opening of an air-fuel mixture flow regulating valve 10 so that an engine output becomes a target output; an air-fuel mixture pressure control part H2 for controlling openings of a first fuel gas flow regulating valve 8 and a second fuel gas flow regulating valve 9 so that air-fuel mixture pressure becomes target pressure; and a fuel gas supply state switching control part H3 for switching a supply state of fuel gas G to a mixer 2 according to a change of a supply state of first fuel gas G1 supplied in a first fuel gas supply path 5 between and among a first fuel gas supply state of supplying only the first fuel gas G1 to the mixer 2, a mixed fuel gas supply state of supplying mixed fuel gas of the first fuel gas G1 and second fuel gas G2 to the mixer 2, and a second fuel gas supply state of supplying only the second fuel gas G2 to the mixer 2. <P>COPYRIGHT: (C)2013,JPO&INPIT |
