Waste Heat Recovery on a Diesel-Electric Hybrid Bus Using a Turbogenerator

Briggs, Ian; McCullough, Geoffrey; Spence, Stephen; Douglas, Roy; O’Shaughnessy, R.; Hanna, Alister; Rouaud, Cédric; Seaman, Rachel

doi:10.4271/2012-01-1945

Cited by 17 publications

(9 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…10.26). This technology has been extensively investigated since the early 1970s and covered in literature (DiBella et al, 1983;Diehl et al, 2001;Crane et al, 2001;Chammas and Clodic, 2005;Stobart and Weerasinghe, 2006;Arias et al, 2006;Teng et al, 2006Teng et al, , 2007aTeng et al, , 2007bKruiswyk, 2008;Nelson, 2009;Ringler et al, 2009;Teng, 2010;Edwards et al, 2010Edwards et al, , 2012Hirschbichler, 2010;Briggs et al, 2010Briggs et al, , 2012Chiew et al, 2011;Arunachalam et al, 2012;Latz et al, 2012;Lopes et al, 2012). It can be applied to EGR heat rejection, charge air heat rejection, turbine outlet exhaust heat, and even engine coolant heat rejection.…”

Section: Waste Heat Recovery (Whr) Systemsmentioning

confidence: 98%

Improving the environmental performance of heavy-duty vehicles and engines: particular technologies

Xin

Pinzon

2014

Alternative Fuels and Advanced Vehicle Technologies for Improved Environmental Performance

View full text Add to dashboard Cite

Section: Waste Heat Recovery (Whr) Systemsmentioning

confidence: 98%

Improving the environmental performance of heavy-duty vehicles and engines: particular technologies

Xin

Pinzon

2014

Alternative Fuels and Advanced Vehicle Technologies for Improved Environmental Performance

View full text Add to dashboard Cite

“…Hountalas et al indicates that improvement of Turbine/compressor (T/C) efficiency can boost the fuel economy significantly and plays a dominant role when engine operates under 25% load condition [18]. Turbine size optimization has also been demonstrated to enhance the fuel economy a lot [19]. The results released by Bowman are based on high efficiency turbo-machinery6.…”

Section: Introductionmentioning

confidence: 97%

Fuel Saving Potential of Different Turbo-Compounding Systems Under Steady and Driving Cycles

Xie

2015

SAE Technical Paper Series

View full text Add to dashboard Cite

The performance of three different electric turbo-compounding systems under both steady and driving cycle condition is investigated in this paper. Three configurations studied in this paper are serial turbo-compounding, parallel turbo-compounding and electric assisted turbo-compounding. The electric power, global gain of the whole system (engine and power turbine) under steady operating condition is firstly studied. Then investigation under three different driving cycles is conducted. Items including fuel consumption, engine operating point distribution and transient response performance are analyzed among which the second item is done based on statistic method combined with the results obtained under steady operating conditions. Study under steady condition indicates that electric assisted turbo-compounding system is the best choice compared with the other two systems. The performance of serial turbo-compounding is load oriented while parallel configuration is speed oriented. Research under driving cycles shows that performance differs greatly according to driving cycles considered for the same turbocompounding system though all the turbo-compounding systems is capable of enhancing the fuel economy. Electric assisted turbocompounding is still the best no matter what driving cycle is considered. Serial system shows much better performance than parallel configuration because more operating points falls in the region corresponding to significant improvement of overall fuel conversion efficiency (including the power recovered by power turbine). What is more, the electric assisted turbo-compounding system shows much better transient response performance than the other two systems. Serial configuration is more suitable for the driving cycle characterized by frequent vehicle speed change compared with parallel layout.Pumping loss is the main factor considered when different forms of turbo-compounding system are compared for a given engine. Additional turbine mounted in the exhaust pipe acts like an obstacle

show abstract

“…The engine uses a common rail fuel injection system. The creation of the 2.4-litre diesel engine model is described in detail in [26]. In summary, an initial baseline model was created and validated against a wide range of cycle-averaged experimental data at a comprehensive matrix of operating conditions.…”

Section: Baseline Engine Modelmentioning

confidence: 99%

“…This involved the addition of a power turbine downstream of, and in series with, the turbocharger turbine as described in previous studies by the author [26]. Three different sizes of turbogenerator were created with different rated power output: 4.6kW, 7.0kW and 9.3kW at full engine load.…”

Section: Turbogenerator Modelmentioning

confidence: 99%

Whole-vehicle modelling of exhaust energy recovery on a diesel-electric hybrid bus

Briggs

McCullough

Spence

et al. 2014

Energy

Self Cite

View full text Add to dashboard Cite

Hybrid vehicles can use energy storage systems to disconnect the engine from the driving wheels of the vehicle. This enables the engine to be run closer to its optimum operating condition, but fuel energy is still wasted through the exhaust system as heat. The use of a turbogenerator on the exhaust line addresses this problem by capturing some of the otherwise wasted heat and converting it into useful electrical energy.This paper outlines the work undertaken to model the engine of a diesel-electric hybrid bus, coupled with a hybrid powertrain model which analysed the performance of a hybrid vehicle over a drive-cycle. The distribution of the turbogenerator power was analysed along with the effect on the fuel consumption of the bus. This showed that including the turbogenerator produced a 2.4% reduction in fuel consumption over a typical drive-cycle. The hybrid bus generator was then optimised to improve the performance of the combined vehicle/engine package and the turbogenerator was then shown to offer a 3.0% reduction in fuel consumption. The financial benefits of using the turbogenerator were also considered in terms of fuel savings for operators. For an average bus, a turbogenerator could reduce fuel costs by around £1200 per year.

show abstract

Waste Heat Recovery on a Diesel-Electric Hybrid Bus Using a Turbogenerator

Cited by 17 publications

References 12 publications

Improving the environmental performance of heavy-duty vehicles and engines: particular technologies

Improving the environmental performance of heavy-duty vehicles and engines: particular technologies

Fuel Saving Potential of Different Turbo-Compounding Systems Under Steady and Driving Cycles

Whole-vehicle modelling of exhaust energy recovery on a diesel-electric hybrid bus

Contact Info

Product

Resources

About