Transcript FPEC_051031
FPEC, Free Piston Energy Converter
Principal layout of the prototype
(USFD, INNAS) Volvo Technology Corporation 06520, EM, 2005-11-22 /1
FPEC, Free Piston Energy Converter
The electrical machine
Volvo Technology Corporation 06520, EM, 2005-11-22 /2 (ABB)
FPEC, Free Piston Energy Converter
The combustion system
HCCI combustion Two-stroke Cyl. vol.: 2x1 litre Diesel fuel Simulation results: Power optimal : 23 kW Efficiency ind : ~51% Efficiency eff : ~46%
(IFP, INNAS, CTH) Volvo Technology Corporation 06520, EM, 2005-11-22 /3
FPEC, Free Piston Energy Converter Cylinder
Volvo Technology Corporation 06520, EM, 2005-11-22 /4
FPEC, Free Piston Energy Converter
Cylinder head, complete
Volvo Technology Corporation 06520, EM, 2005-11-22 /5
FPEC, Free Piston Energy Converter
Photograph of the prototype
Volvo Technology Corporation 06520, EM, 2005-11-22 /6 (INNAS)
FPEC, Free Piston Energy Converter Prototype in the test cell at Chalmers
Volvo Technology Corporation 06520, EM, 2005-11-22 /7
FPEC, Free Piston Energy Converter
Control layout
•
Control Inputs
-
Electromagnetic force,
-
F el
Fuel input, Q
comb
•
Controlled Outputs:
-
Output power, P Ignition time, t
ign
(VTEC, USFD) Volvo Technology Corporation 06520, EM, 2005-11-22 /8
FPEC, Free Piston Energy Converter
Control strategy
15 El-force [kN] Piston displacement [cm] Piston velocity [m/s] 10 5 0 -5 -10 x 0 x 1 x 2 -15 1005 1010 1015 x 3 1020 1025 Time [ms] 1030 Volvo Technology Corporation 06520, EM, 2005-11-22 /9 1035 1040 1045 (USFD, VTEC)
FPEC, Free Piston Energy Converter
Balancing of the free piston engine
Volvo Technology Corporation 06520, EM, 2005-11-22 /10
FPEC, Free Piston Energy Converter Main project results
• • •
Integral prototype, rated power 15-50 kW to confirm efficiency, emissions, control procedures, etc.
Experimental verification of performance.
Results from modelling the onboard electricity generation system, especially controllability, performance at part load and transients.
•
Results from scaling and packaging studies.
Volvo Technology Corporation 06520, EM, 2005-11-22 /11