Numerical Analysis of Turbocharger Response Delay Mechanism

Park, Shinrak; Matsumoto, Takaki; ODA, Nobuyuki

doi:10.4271/2010-01-1226

Cited by 12 publications

(6 citation statements)

References 3 publications

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“…thermoelectrical devices [15], the Rankine cycle [16], and the turbocharger system [17]. Table 5 summarises advanced technologies for recovering exhaust heat from ICEs together with the anticipated objectives.…”

Section: Buildings and Conventional Gasoline-based Vehiclesmentioning

confidence: 99%

“…Technical solutions for diversified energy interactions between buildings and vehicles have been rarely investigated. As listed in Table 5, Section 4.1, there are three technologies for recovering waste heat to generate electricity, including thermoelectrical devices [15], the Organic Rankine Cycle [16], and the turbocharger system [17]. Before being widely accepted by manufacturers, several technical problems need to be addressed in terms of the electricity generation from the exhaust heat in ICE vehicles.…”

Section: Thermal-electricity-electrofuel Interactionmentioning

confidence: 99%

“…With respect to different energy forms , advanced energy conversions, diversified energy storages, and hybrid grids' interactions, several interactive energy sharing networks are formulated and designed in this study to bridge the research gap. In regard to conventional gasoline-based vehicles, the energy forms can be thermal and electrical energy depending on the available exhaust heat recovery technologies, such as thermoelectrical devices [15], the Organic Rankine Cycle [16], and the turbocharger system [17]. For biofuelbased vehicles, in addition to both thermal and electrical energy, the biofuel can be used to drive biofuel-based equipment for domestic usage, such as the biofuel boiler and biofuel cogenerated heat and power (CHP).…”

Section: Introductionmentioning

confidence: 99%

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Energy integration and interaction between buildings and vehicles: A state-of-the-art review

Zhou

Cao

Hensen

et al. 2019

Renewable and Sustainable Energy Reviews

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Clean power production, buildings, and transportation are key areas for climate change mitigation. Their tighter integration decreases not only the emissions, but also the energy consumption of buildings and transportation.Energy integration and interactions between buildings and vehicles are dependent on the type of building, vehicle, and renewable energy system, as well as the local climatic conditions. The current academic literature does not provide a systematic analysis of this topic. In the study, different energy management systems and advanced energy control strategies have been formulated to study such interactions both from a building and a vehicle perspective. Furthermore, technical solutions have been systematically reviewed in terms of the enhancement of energy interaction capabilities, in particular from the standpoint of renewable energy systems, energy/fuel charging facilities, and control strategies. Assessment criteria employed in the review of solutions include grid interaction, annual operational cost, annual net CO2 emissions, and annual matching capability. The literature review identifies several technical challenges that need further consideration such as capacity expansion and power fluctuation of the electric grid, low efficiency of heat recovered from electricity generation, and depreciation of vehicles. The future outlook and potential for the energy interaction networks between buildings and vehicles have also been presented.

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Section: Buildings and Conventional Gasoline-based Vehiclesmentioning

confidence: 99%

Section: Thermal-electricity-electrofuel Interactionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Energy integration and interaction between buildings and vehicles: A state-of-the-art review

Zhou

Cao

Hensen

et al. 2019

Renewable and Sustainable Energy Reviews

View full text Add to dashboard Cite

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“…Therefore, some portion of the turbine power should be absorbed by the rotor components due to this inertial resistance. 20 Park et al, 21 reported in their 1-D simulation results that this turbine power loss related to T/C rotor inertia can be 20.4% of the required power during the transient response. The authors point out that the reduction of the T/W rotational inertia by using light material is an effective method to overcome this phenomenon, compared with using a smaller diameter one, because application of a small diameter T/W deteriorates the turbine efficiency at the high engine speed region, and increases the engine back pressure.…”

Section: Introductionmentioning

confidence: 99%

Effects of turbocharger rotational inertia on engine and turbine performance in a turbocharged gasoline direct injection engine under transient and steady conditions

Park

Ebisu

Bae

2021

International Journal of Engine Research

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The effects of turbocharger (T/C) rotational inertia on engine and turbine performance under transient and steady engine conditions were analyzed in a 2.0 L 4-cylinder turbocharged-gasoline direct injection (T-GDI) engine. The test T/Cs consisted of heavy and light compressor wheels (C/W) and turbine wheels (T/W). The study was conducted in two research stages. First, transient engine load tests were conducted to evaluate the effect of T/C rotational inertia on transient response of the T/C, combustion performance, and fuel consumption. Seconds, steady engine load tests were conducted to find out if a light inertia T/C can run at higher efficiency under the same exhaust pulsating flow conditions within one engine cycle. In order to evaluate the engine on-board turbine instantaneous performances in the units of crank angle degree (CAD), T/C rotation speed and pressure data were measured in the experiment. The instantaneous exhaust gas mass flow rate and the temperature of upstream and downstream of the turbine were extracted by 1-D simulation. Turbine efficiency and mass flow rate parameters were calculated by combining these data. In the results, there existed positive effects of light inertia T/C on response and specific fuel consumption under transient conditions. It was also found that the light inertia T/C could show higher T/C speed fluctuation under the same exhaust pulsating flow conditions. Consequently, blade speed ratio (BSR) and turbine efficiency of light inertia T/C were partially higher than that of conventional one. However, it was not led to higher engine efficiency.

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“…Turbo-lag can be defined as the time consumed by the turbo-charger in order to furnish sufficient boost pressure to the engine. [1][2][3] Turbo-lag improvement such as, by the numerical study, 3 power pulse development by Volvo, 4 simultaneous usage of both small and large turbochargers 5 etc. were deeply investigated.…”

Section: Introductionmentioning

confidence: 99%

Performance improvement of turbocharged SI engine by post-oxidation enhancement in exhaust gas in-homogeneity

Kumar

Moeeni

Kuboyama

et al. 2020

International Journal of Engine Research

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In this research, the improvement of mixing and pulsation in exhaust manifold with a design and implementation of bypass adapter at exhaust port were deeply investigated. This in-turn can improve the post-oxidation phenomena and hence emissions and engine performance could be enhanced. This research investigation includes 1-D, 3-D simulations and experimental validation on a 4-cylinder turbocharged spark ignition (SI) engine. Firstly, the 1-D and 3-D simulation models were developed and calibrated with the experimental results. Then, the simulations were used for the detailed investigation of mixing and pulsation in exhaust manifold with and without bypass adapter. Thereafter, experimental test for the post-oxidation were conducted with and without consideration of the bypass adapter and results were compared. From the simulation and experimental results, it was proven that by using bypass adapter at the exhaust port, the mixing of exhaust gas species was observed to be significantly improved to some extent. Also, the unbalance between exhaust port and turbocharger upstream gas species were reduced. This also reduced the exhaust gas pulsation. By the improvement of mixing between scavenged O2 and unburned gas species, the post-oxidation reaction was also noted to have improved and consequently the emissions and turbo-speed were found to be better that led to an improved IMEP and thermal efficiency of the engine.

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Numerical Analysis of Turbocharger Response Delay Mechanism

Cited by 12 publications

References 3 publications

Energy integration and interaction between buildings and vehicles: A state-of-the-art review

Energy integration and interaction between buildings and vehicles: A state-of-the-art review

Effects of turbocharger rotational inertia on engine and turbine performance in a turbocharged gasoline direct injection engine under transient and steady conditions

Performance improvement of turbocharged SI engine by post-oxidation enhancement in exhaust gas in-homogeneity

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