Title :
Micro Mass Flow Controller for a Mini-HCCI-Motor Driven Power Generator
Author :
Schiffer, M. ; Stefanini, C. ; Tunestål, P. ; Obermeier, E.
Author_Institution :
Tech. Univ. of Berlin, Berlin
Abstract :
A piezoelectric micro mass flow controller (MMFC) for liquid fuel injection into a mini-HCCI-motor for power generation is introduced. Piezoelectric actuation ensures negligible power consumption for fuel injection allowing self-sustaining operation. A pressurized fuel tank is connected to the MMFC which is designed like a normally-closed, on-/off-operating valve. Integrated piezoresistors are used for feedback control and an implemented pn-diode (sensitivity: -2.5 mV / K) enables on-chip temperature monitoring. Flow rates of up to 70 mul/s at 100 kPa fuel pressure have been demonstrated. The power consumption of the piezoelectric actuator during steady state operation is max. 20 muW at 120 V.
Keywords :
fuel systems; microfluidics; piezoelectric actuators; feedback control; integrated piezoresistors; liquid fuel injection; mini-HCCI-motor driven power generator; on-chip temperature monitoring; operating valve; piezoelectric actuation; piezoelectric micro mass flow controller; pn-diode; power 20 muW; power consumption; pressurized fuel tank; voltage 120 V; Energy consumption; Feedback control; Fuel storage; Piezoelectric actuators; Piezoresistive devices; Power generation; Temperature measurement; Temperature sensors; Valves; Weight control; HCCI; Mass flow controller; fuel injector; piezoelectric; power generator;
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems Conference, 2007. TRANSDUCERS 2007. International
Conference_Location :
Lyon
Print_ISBN :
1-4244-0841-5
Electronic_ISBN :
1-4244-0842-3
DOI :
10.1109/SENSOR.2007.4300333
