Optimization of a thermoelectric generator for heavy-duty vehicles

2019 ◽  
Vol 179 ◽  
pp. 178-191 ◽  
Author(s):  
André Marvão ◽  
Pedro J. Coelho ◽  
Helder C. Rodrigues
Keyword(s):  
Thermoelectric Generator ◽  
Heavy Duty ◽  
Heavy Duty Vehicles

scholarly journals 3 kW Thermoelectric Generator for Natural Gas-Powered Heavy-Duty Vehicles—Holistic Development, Optimization and Validation

Energies ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 15
Author(s):  
Lars Heber ◽  
Julian Schwab ◽  
Timo Knobelspies
Keyword(s):  
Natural Gas ◽  
Thermoelectric Generator ◽  
Functional Model ◽  
Simultaneous Optimization ◽  
Heavy Duty ◽  
Holistic Model ◽  
Average Deviation ◽  
Vehicle Class ◽  
Thermoelectric Modules ◽  
Heavy Duty Vehicles

Emissions from heavy-duty vehicles need to be reduced to decrease their impact on the climate and to meet future regulatory requirements. The use of a cost-optimized thermoelectric generator based on total cost of ownership is proposed for this vehicle class with natural gas engines. A holistic model environment is presented that includes all vehicle interactions. Simultaneous optimization of the heat exchanger and thermoelectric modules is required to enable high system efficiency. A generator design combining high electrical power (peak power of about 3000 W) with low negative effects was selected as a result. Numerical CFD and segmented high-temperature thermoelectric modules are used. For the first time, the possibility of an economical use of the system in the amortization period of significantly less than 2 years is available, with a fuel reduction in a conventional vehicle topology of already up to 2.8%. A significant improvement in technology maturity was achieved, and the power density of the system was significantly improved to 298 W/kg and 568 W/dm3 compared to the state of the art. A functional model successfully validated the simulation results with an average deviation of less than 6%. An electrical output power of up to 2700 W was measured.

scholarly journals Driver Evaluation in Heavy Duty Vehicles Based on Acceleration and Braking Behaviors

2020 ◽  
Author(s):  
Mehmet Emin Mumcuoglu ◽  
Gokhan Alcan ◽  
Mustafa Unel ◽  
Onur Cicek ◽  
Mehmet Mutluergil ◽  
...  
Keyword(s):  
Heavy Duty ◽  
Heavy Duty Vehicles

scholarly journals Dual Stage Multilevel Control for Heavy Duty Vehicles under Different Traffic Conditions

2020 ◽  
Vol 53 (2) ◽  
pp. 13850-13854
Author(s):  
P. Polverino ◽  
I. Arsie ◽  
C. Pianese
Keyword(s):  
Heavy Duty ◽  
Traffic Conditions ◽  
Dual Stage ◽  
Heavy Duty Vehicles

scholarly journals Parameter Estimation of a Countershaft Brake for Heavy-Duty Vehicles with Automated Mechanical Transmission

Processes ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 1036
Author(s):  
Yunxia Li ◽  
Lei Li
Keyword(s):  
Parameter Identification ◽  
Least Squares ◽  
Dynamic Model ◽  
Control Flow ◽  
Mechanical Transmission ◽  
Equivalent Resistance ◽  
Heavy Duty ◽  
Characteristic Parameters ◽  
Resistance Torque ◽  
Heavy Duty Vehicles

A countershaft brake is used as a transmission brake (TB) to realize synchronous shifting by reducing the automated mechanical transmission (AMT) input shaft’s speed rapidly. This process is performed to reduce shifting time and improve shifting quality for heavy-duty vehicles equipped with AMT without synchronizer. To improve controlled synchronous shifting, the AMT input shaft’s equivalent resistance torque and the TB’s characteristic parameters are studied. An AMT dynamic model under neutral gear position is analyzed during the synchronous control interval. A dynamic model of the countershaft brake is discussed, and its control flow is given. The parameter identification method of the AMT input shaft’s equivalent resistance torque is given on the basis of the least squares algorithm. The parameter identification of the TB’s characteristic parameters is proposed on the basis of the recursive least squares method (RLSM). Experimental results show that the recursive estimations of the TB’s characteristic parameters under different duty cycles of the TB solenoid valve, including brake torque estimation, estimation accuracy, and braking intensity estimation, can be effectively estimated. The research provides some reliable evidence to further study the synchronous shifting control schedule for heavy-duty vehicles with AMT.

scholarly journals Assessment of waste heat recovery for heavy-duty vehicles during on-road operation

2021 ◽  
Vol 191 ◽  
pp. 116891
Author(s):  
Stijn Broekaert ◽  
Theodoros Grigoratos ◽  
Dimitrios Savvidis ◽  
Georgios Fontaras
Keyword(s):  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Heavy Duty ◽  
Heavy Duty Vehicles

Oxidative Potential of Semi-Volatile and Non Volatile Particulate Matter (PM) from Heavy-Duty Vehicles Retrofitted with Emission Control Technologies

2009 ◽  
Vol 43 (10) ◽  
pp. 3905-3912 ◽  
Author(s):  
Subhasis Biswas ◽  
Vishal Verma ◽  
James J. Schauer ◽  
Flemming R. Cassee ◽  
Arthur K. Cho ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Emission Control ◽  
Heavy Duty ◽  
Oxidative Potential ◽  
Control Technologies ◽  
Heavy Duty Vehicles

Propane Fueled Heavy-Duty Vehicles

1993 ◽  
Author(s):  
Nils-Olof Nylund ◽  
Matti Kytö
Keyword(s):  
Heavy Duty ◽  
Heavy Duty Vehicles
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