Advanced Turbocharging Technologies for Heavy-Duty Diesel Engines

Arnold, Steve; Slupski, Kevin; Groskreutz, Mark; Vrbas, Gary; Cadle, Rob; Shahed, S. M.

doi:10.4271/2001-01-3260

Cited by 16 publications

(3 citation statements)

References 2 publications

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“…Turbochargers are the most known examples of waste heat recovery within heavy-duty and higher performance light duty engines. Having been around for nearly a century, the use of conventional turbochargers utilizes exhaust energy to boost intake air and significantly improves engine efficiency (Arnold et al, 2001). Similar to the concept of turbochargers, mechanical and electrical turbo-compounding has also been recognized as a potential source to generate useful work, where the recovered energy from the exhaust is mechanically or electrically added back to the engine flywheel (Noor et al, 2014).…”

Section: Waste Heat Recovery Technology Applicationsmentioning

confidence: 99%

Investigating the Potential of Waste Heat Recovery as a Pathway for Heavy-Duty Exhaust Aftertreatment Thermal Management

Pradhan

2015

SAE Technical Paper Series

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Investigating the Potential of Waste Heat Recovery as a Pathway for Heavy-Duty Exhaust Aftertreatment Thermal Management Saroj Pradhan Heavy-duty diesel (HDD) engines are the primary propulsion source for most heavy-duty vehicle freight movement and have been equipped with an array of aftertreatment devices to comply with more stringent emissions regulations. In light of concerns about the transportation sector's influence on climate change, legislators are introducing requirements calling for significant reductions in fuel consumption and thereby, greenhouse gas (GHG) emission over the coming decades. Advanced engine concepts and technologies will be needed to boost engine efficiencies. However, increasing the engine's efficiency may result in a reduction in thermal energy of the exhaust gas, thus contributing to lower exhaust temperature, potentially affecting after-treatment activity, and consequently emissions rate of regulated pollutants. iii TABLE OF CONTENTS CHAPTER 1 INTRODUCTION .

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Section: Waste Heat Recovery Technology Applicationsmentioning

confidence: 99%

Investigating the Potential of Waste Heat Recovery as a Pathway for Heavy-Duty Exhaust Aftertreatment Thermal Management

Pradhan

2015

SAE Technical Paper Series

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“…External EGR systems use plumbing to route exhaust gases to a position in the intake system, often downstream of the compressor, to avoid lon g-term fouling of intake components. In external EGR systems, an advanced turbocharger design, such as a variable geometry turbocharger (VGT), may be implemented to help maintain a positive-pressure differential across the exhaust and intake manifolds while a computer-controlled EGR valve may be used to regulate the amount of EGR flow in response to engine-loading conditions [Majewski and Khair 2006c;Arnold et al 2001;Filipi et al 2001]. Some engines may incorporate both internal and external EGR simultaneously.…”

Section: Exhaust Gas Recirculation (Egr)mentioning

confidence: 99%

Diesel aerosols and gases in underground mines: guide to exposure assessment and control.

Bugarski¹,

Cauda²,

Janisko³

et al. 2011

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“…Therefore, the development of energy-saving and low emission internal combustion engines to increase the proportion of electrification in the powertrain is still one of the key tasks for automotive power (HU et al 2019). A serial electric auxiliary turbocharger (EAT) can be a reliable solution for turbo lag, which is caused by the non-instantaneous change of exhaust gas volume and temperature in the starting and transient stages, is mass-produced and equipped with an automotive engine, which is also favored by turbocharger manufacturers, OEM manufacturers and research institutions (Arnold et al 2001;Katrašnik et al 2003;Biwersi et al 2012). Different from the exhaust gas-driven turbocharger, the EAT, which connects directly to the motor, is much more sensitive to the efficiency of the compressor rotor, when this increases, the driven motor output decreases.…”

Section: Introductionmentioning

confidence: 99%

Research on the Effect of Pressure Side Winglet Profile on the Performance of High-Loaded Compressor Rotor

Teng¹,

Zhong²

2020

Proceedings of Global Power &Amp; Propulsion Society

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To improve the performance of an electric assistant turbocharger in different backpressure environments, the compressor margin needed to be optimized individually. As an effective passive control method to improve the margin, the full-chord-covered pressure side tip winglet has been studied and applied for compressor and turbine rotors. The research on the effect of partial tip winglets, which can reduce added mass of winglet and the weight of the rotor, on the compressor margin has not been found in the available literature. Utilizing numerical simulation, this paper was focused on the research of a high-speed single-rotor compressor which the tip loading coefficient is 0.81. The shape of the pressure side tip winglet is optimized with the margin as the single objective. A database with 189 valid samples was generated using the Latin hypercube method. A self-developed ε-Support vector regression (SVR)-genetic algorithm (GA) optimization platform was applied to optimize the tip shape. The platform obtained a partial pressure side tip winglet shape. Compared with the CFD simulation results, the error of the ε-SVR-GA platform predicted the margin was 4.1%. The result obtained by the ε-SVR-GA platform was improved compared with the prototype margin by 25.36%.

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Advanced Turbocharging Technologies for Heavy-Duty Diesel Engines

Cited by 16 publications

References 2 publications

Investigating the Potential of Waste Heat Recovery as a Pathway for Heavy-Duty Exhaust Aftertreatment Thermal Management

Investigating the Potential of Waste Heat Recovery as a Pathway for Heavy-Duty Exhaust Aftertreatment Thermal Management

Diesel aerosols and gases in underground mines: guide to exposure assessment and control.

Research on the Effect of Pressure Side Winglet Profile on the Performance of High-Loaded Compressor Rotor

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