Study of two-stage turbine characteristic and its influence on turbo-compound engine performance

Zhao, Rongchao; Zhuge, Weilin; Zhang, Yangjun; Yang, Mingyang; Martinez-Botas, Ricardo; Yin, Yueping

doi:10.1016/j.enconman.2015.01.079

Cited by 59 publications

(23 citation statements)

References 24 publications

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“…For this reason, many studies [26][27][28][29][30] focused on turbocompound application to diesel engines above 12 L. In particular, Katsanos et al [27] show a fuel consumption reduction of 4% in a 330-kW diesel engine at full load and 4% fuel consumption reduction was also found by Kant et al [28]. Zhao et al [29] found a brake-specific fuel consumption (BSFC) reduction from 3.1% to 7.8%, whereas Teo Sheng Jye et al [26] found a 2% average BSFC reduction for a 13,000 cm 3 diesel engine. In [30], an analytical 2 of 20 model is developed to show BSFC of a turbocompound diesel engine with different power turbine expansion ratio.…”

Section: Introductionmentioning

confidence: 99%

Turbocompound Power Unit Modelling for a Supercapacitor-Based Series Hybrid Vehicle Application

et al. 2020

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In this paper, starting from the measurements available for a 2000 cm3 turbocharged diesel engine, an analytical model of the turbocharger is proposed and validated. The model is then used to extrapolate the efficiency of a power unit with a diesel engine combined with a turbocompound system. The obtained efficiency map is used to evaluate the fuel economy of a supercapacitor-based series hybrid vehicle equipped with the turbocompound power unit. The turbocompound model, in accordance with the studies available in the technical literature, shows that the advantages (in terms of efficiency increase) are significant at high loads. For this reason, turbocompound introduction allows a significant efficiency improvement in a series hybrid vehicle, where the engine always works at high-load. The fuel economy of the proposed vehicle is compared with other hybrid and conventional vehicle configurations.

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Section: Introductionmentioning

confidence: 99%

Turbocompound Power Unit Modelling for a Supercapacitor-Based Series Hybrid Vehicle Application

et al. 2020

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“…The organic Rankine cycle (ORC) has been proven to be the most promising technology for recovering diesel engine waste heat [7][8][9][10][11]. Many scholars have conducted in-depth research on the waste heat of diesel exhaust gas recovered by ORC, including simple systems [12,13], systems with preheating [14,15], and dual loop ORC systems.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Performance Analysis of an Improved Two-Stage Organic Rankine Cycle

Liu

Chen

2018

Energies

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In order to improve the two-stage organic Rankine cycle of two heat exchanges of exhaust gas, a two-stage organic Rankine cycle with a regenerator is proposed. Toluene, benzene, cyclohexane and R245fa were selected as the working fluids of the cycle. The thermal efficiency, exergy efficiency and net output power of the cycle were selected as the objective function of the system. The influence of the regenerative performance on the thermodynamic performance of the system was analyzed. The influence of the temperature change of the primary heat exchange outlet on the thermodynamic performance of the system is discussed. The research shows that the regenerator can increase the net power and thermal efficiency of the cycle output. For the selected working fluid, as the efficiency of the regenerator increases, the thermal efficiency of the cycle and the net output power increase. When the primary heat exchange outlet temperature of the exhaust gas increases, the net output power and the exergy efficiency of the cycle increase. For the selected working fluid, when the exhaust heat exchange outlet temperature was increased from 410 K to 490 K, the net output power of the cycle increased up to 10.76 kW, and the exergy efficiency increased up to 7.85%.

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“…The recent technologies on waste heat recovery of ICE consist of low grade heat from cooling system and high grade heat from exhaust system. For low grade waste heat, the organic Rankine cycle is the favourite choice to recover waste energy [3], whereas for high grade heat several techniques to recover the energy can be applied such as the thermoelectric generators [4,5], the turbochargers [6][7][8], the turbocompounds [9][10][11][12], the Rankine cycle system [13,14], the heat pipe [15], the air conditioning [16], the emission reduction [17], and the power turbine of waste heat recovery mechanism [18]. The approaches lead to theoretical, simulation, or experimental works that may improve the brake specific fuel consumption (BSFC) that means better overall efficiency.…”

Section: Introductionmentioning

confidence: 99%

Prediction on Power Produced from Power Turbine as a Waste Heat Recovery Mechanism on Naturally Aspirated Spark Ignition Engine Using Artificial Neural Network

Herawan

Rohhaizan

Ismail

et al. 2016

Modelling and Simulation in Engineering

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The waste heat from exhaust gases represents a significant amount of thermal energy, which has conventionally been used for combined heating and power applications. This paper explores the performance of a naturally aspirated spark ignition engine equipped with waste heat recovery mechanism (WHRM) in a sedan car. The amount of heat energy from exhaust is presented and the experimental test results suggest that the concept is thermodynamically feasible and could significantly enhance the system performance depending on the load applied to the engine. However, the existence of WHRM affects the performance of engine by slightly reducing the power. The simulation method is created using an artificial neural network (ANN) which predicts the power produced from the WHRM.

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Study of two-stage turbine characteristic and its influence on turbo-compound engine performance

Cited by 59 publications

References 24 publications

Turbocompound Power Unit Modelling for a Supercapacitor-Based Series Hybrid Vehicle Application

Turbocompound Power Unit Modelling for a Supercapacitor-Based Series Hybrid Vehicle Application

Thermodynamic Performance Analysis of an Improved Two-Stage Organic Rankine Cycle

Prediction on Power Produced from Power Turbine as a Waste Heat Recovery Mechanism on Naturally Aspirated Spark Ignition Engine Using Artificial Neural Network

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