Diesel Engine Electric Turbo Compound Technology

Hopmann, Ulrich; Algrain, Marcelo C.

doi:10.4271/2003-01-2294

Cited by 79 publications

(52 citation statements)

References 1 publication

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“…Several prototypes are being developed by leading diesel engine and turbocharger suppliers. In 2003, Caterpillar demonstrated the fuel economy benefit of using the electric turbocompounding on heavy-duty engines [12]. In 2005, Honeywell reported the improvements of fuel economy and transient response using the electric boosting system [13].…”

Section: Introductionmentioning

confidence: 99%

Characterisation, control, and energy management of electrified turbocharged diesel engines

Zhao

Winward

Yang

et al. 2017

Energy Conversion and Management

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The electrification of engine components offers significant opportunities for fuel efficiency improvements. The electrified turbocharger is one of the most attractive options since it recovers part of the engine exhaust gas mechanical energy to assist boosting. Therefore, the engine can be downsized through improved transient responsiveness. In the electrified turbocharger, an electric machine is mounted on the turbine shaft and changes the air system dynamics, so characterisation of the new layout is essential. A systematic control solution is required to manage energy flows in the hybrid system. In this paper, a framework for characterisation, control, and energy management for an electrified turbocharged diesel engine is proposed. The impacts of the electric machine on fuel economy and air system variables are analysed. Based on the characterisation, a two-level control structure is proposed. A real-time energy management strategy is employed as the supervisory level controller to generate the optimal values of critical variables, while a model-based multi-variable controller is designed as the low level controller to track the values. The two controllers work together in a cascade to address both fuel economy optimisation and battery state-of-charge maintenance. The proposed control strategy is validated on a high fidelity physical engine model. The tracking performance shows the proposed framework is a promising solution in regulating the behavior of electrified engines. Electrified turbocharged diesel engines, energy management, real-time optimisation, multi-variable control 2 Highlights• A real-time energy management framework for electrified engines is proposed.• A multi-variable robust controller is designed.• Characterisation on the air system of electrified diesel engines is given.• Reliable for engine downsizing because of the promising transient performance.

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Section: Introductionmentioning

confidence: 99%

Characterisation, control, and energy management of electrified turbocharged diesel engines

Zhao

Winward

Yang

et al. 2017

Energy Conversion and Management

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“…Then when energy from the exhaust gas is not enough to spin the turbine, the stored energy is then used to spin the shaft turning the generator into an electric motor. This setup has recorded an overall engine efficiency of 5% [9]. Another setup is attached to the electric generator directly to the turbine omitting the compressor.…”

Section: Introductionmentioning

confidence: 99%

Exergy Analysis of Organic Rankine Cycle and Electric Turbo Compounding for Waste Heat Recovery

Muhammad

Mamat

Salim

2018

IJET

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With such tough legislation on current emission standards, car manufacturers are focusing on increasing the efficiency of their engines with the development of advance waste heat recover (WHR) technology. Organic Rankine Cycle (ORC) and Electric Turbo Compounding (ETC) system have a good potential to be used as exhaust energy recovery. This paper compares the exergy availability and losses between the ORC and the ETC. In this particular study, exhaust data from the Proton 1.6L CamPro CFE turbocharged engine was used. This particular engine already has a main turbocharger, making the added WHR as a secondary recovery system to further increase the engine efficiency. Both systems are coupled to a 1 kW electric generator for ease of comparisons. At first the available exer gy is calculated for both WHR technologies. Exergy losses from rotating the generator are analysed to finally determine the thermal effi ciency of the overall system. Exergy calculation is simplified to only account for chemical and physical exergy since kinetic and potential energy are negligible in comparison. Available exergy for ORC was significantly high which went up to 12.5 kW with the exergy losses recorded at 9.7 kW. The ETC achieved only 5 kW but had a small loss at 8x10-3 kW. Average thermal efficiency of the ORC systems was 10.7% compared to ETC which was 58.7%. It can be concluded that the complexity of the ORC system contributes to its downfall where multiple components increase its exergy losses compared to the simplistic design of an ETC.

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“…There are multiple choices of technologies for waste thermal energy recovery in automotive applications. Among them there are Mechanical Turbo-Compounding (MTC) , electrical turbo-compounding (ETC), Thermoelectric Generator (TEG) and Organic Rankine Cycle (ORC) [1][2][3][4][5]. Each technique has its own advantages and disadvantages.…”

Section: Introductionmentioning

confidence: 99%

Improved Thermoelectric Generator Performance Using High Temperature Thermoelectric Materials

Yang¹,

Prado‐Gonjal²,

Phillips³

et al. 2017

SAE Technical Paper Series

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Diesel Engine Electric Turbo Compound Technology

Cited by 79 publications

References 1 publication

Characterisation, control, and energy management of electrified turbocharged diesel engines

Characterisation, control, and energy management of electrified turbocharged diesel engines

Exergy Analysis of Organic Rankine Cycle and Electric Turbo Compounding for Waste Heat Recovery

Improved Thermoelectric Generator Performance Using High Temperature Thermoelectric Materials

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