Prediction of an electrically turbocharged engine and performance prediction in an actual drive cycle
The study involves the evaluation of the energy recovery potential of turboshaft separated (decoupled) electric turbocharger and its boosting capability in a spark�ignition engine through simulation-based work and comparing it to a conventional turbocharged engine over an actual drive cycle. The...
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| Main Author: | |
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| Format: | Thesis |
| Language: | English English English |
| Published: |
2022
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/8268/1/24p%20KAMALLESWARAN%20SUBRAMANIAM.pdf http://eprints.uthm.edu.my/8268/2/KAMALLESWARAN%20SUBRAMANIAM%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/8268/3/KAMALLESWARAN%20SUBRAMANIAM%20WATERMARK.pdf http://eprints.uthm.edu.my/8268/ |
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| Summary: | The study involves the evaluation of the energy recovery potential of turboshaft
separated (decoupled) electric turbocharger and its boosting capability in a spark�ignition engine through simulation-based work and comparing it to a conventional
turbocharged engine over an actual drive cycle. The main objective of this study is to
develop a 1-D numerical model and evaluate the amount of energy that can be
recovered over a steady state full-load operating conditions, part-load conditions, and
actual, transient drive cycle conditions besides investigating the capabilities of an
electric turbocharger. The electric turbocharged system includes two motors and a
battery pack to store the recovered electrical energy. GT-Power engine simulation
software was used to model both engines and utilizes each of the components
described earlier. The conventional turbocharged engine model is first simulated to
obtain its performance characteristics. An electric turbocharger is then modelled by
separating the turbine from the compressor. The turbine is connected to an electric
generator and battery, whereas the compressor is connected to a separate motor. This
electrically turbocharged engine was modelled at full load and controlled to produce
the same brake power and brake torque characteristics as the similarly sized
conventional turbocharged engine. The evaluation of energy recovered from the
electrically turbocharged engine from the analysis can assessed in full-load steady
state conditions that can be useful for research in part-load and transient studies
involving the decoupled electrical turbocharger. At 2500 and 3000 rpm, the energy
recovery was 0.57 kW and 0.5 kW respectively at steady state. The maximum
electrical energy that was recovered was 5.25 kW at 6500 rpm. Both engines had the
same fuel consumption over a drive cycle while no energy recovered for the entire
duration of the drive cycle simulation. |
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