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©2013 The Japan Society of Mechanical Engineers Internal combustion engines are required to use various fuels. A conventional MAP based engine control system is not suitable for achieving stable operation and high thermal efficient operation for various fuels. Authors have been developing the engine control algorithm to realize fuel flexibility by employing experimental rules and a closed loop control using in-cylinder gas pressure. In this study, in order to improve fuel flexibility of engine control algorithm and to confirm the experimental rules, availability of calculation results with elementary reactions for the algorithm is investigated. Availability of instant crank shaft torque for a feedback sensor is also investigated. The result shows that the modified engine control system employing laminar burning velocities calculated from elementary reactions and the torque feedback loop can maintain stable operations when fuel lower heating value varies during engine operation.

Engine Control with Gas Fuel Produced from Biomass (Availability of Calculation with Detailed Chemical Reaction and Crank Shaft Torque)