Comparative fuel economy, cost and emissions analysis of a novel mild hybrid and conventional vehicles

2018 IEEE 27th International Symposium on Industrial Electronics (ISIE)

et al. 2018

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In this work, a validation procedure is presented, for an electric propulsion system used in a mild hybrid electric vehicle powertrain. The vehicle is configured based upon a brushless DC (permanent magnet synchronous) motor installed as electric propulsion system in a mild hybrid electric vehicle. Hardware-in-the-loop (HIL) techniques are used to enable rapid prototyping, as well as validate the specified characteristics of the motor unit, which was purchased as an off-the-shelf item. The validation results of the work in summary indicate that whilst the motor unit does not meet quoted specifications, it nevertheless functions acceptably for the purpose of the hybrid electric vehicle application.

Section: B Case Study Architecturementioning

confidence: 99%

Hardware-in-the-Loop Simulation for the Design and Testing of Motor in Advanced Powertrain Applications

Awadallah

Tawadros

2018 IEEE 27th International Symposium on Industrial Electronics (ISIE)

et al. 2018

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“…Multi-speed transmissions are widely used to improve the fuel economy and dynamic performance of hybrid electric vehicles (HEVs), for example, manual transmission, 10 automated manual transmission (AMT), 1,6,11 dual clutch transmission, 7,12 automatic transmission 3,13 and continuous variable transmission. 14 Compared to other types, the AMT owns additional benefits in cost, efficiency and dynamic ability.…”

Section: Introductionmentioning

confidence: 99%

“…If the motor is mounted to the output shaft, the propelling power exists even when the clutch or the synchronizer is disengaged. 1,10 The shifting interruption can hence be limited or even eliminated.…”

Section: Introductionmentioning

confidence: 99%

Efficiency improvement of a novel dual motor powertrain for plug-in hybrid electric buses

Nguyen

Proceedings of the Institution of Mechanical Engineers, Part D:

Zhang

et al. 2020

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Powertrain configuration plays an important role in the performance of plug-in hybrid electric buses. Current designs are the compromise between energy efficiency, dynamic ability, shifting smoothness and manufactural cost. To balance the above requirements, this research proposes a novel dual motor powertrain for plug-in hybrid electric buses. The efficiency improvement is compared to the conventional plug-in parallel hybrid electric buses with a single motor powertrain. Parameter designs of system components guarantee two configurations equivalently. To maximize the benefits of the proposed powertrain, this paper introduces an energy management strategy which coordinates enumeration method and dynamic programming to build the optimal maps of powertrain operation. The enumeration method determines the working points of power sources and gear states in all possible modes according to vehicle speed and power. The dynamic programming then selects the most suitable mode with the consideration of gear shifting and mode change in the optimal maps. Simulation results show that the dual motors work in peak efficiency region much more frequently than the single motor in different conditions. Therefore, the total energy cost of dual motor powertrain for entire driving cycles decreases significantly in comparison with the single motor powertrain, 6.5% in the LA92 and 6.7% in the Urban Dynamometer Driving Schedule.

“…In achieving this goal, we have created a new low-cost hybrid electric powertrain that is robust and simple, while retaining similarity with the typical vehicles found in the target markets. For more information on the development of this powertrain, we direct the reader to Awadallah et al 1,2 In developing and refining the powertrain, we used a hardware-in-loop (HIL) test bench to rapidly develop control algorithms. Torque measurement was required to validate and improve both simulation and HIL modelling.…”

Section: Introductionmentioning

confidence: 99%

Using a low-cost bluetooth torque sensor for vehicle jerk and transient torque measurement

Tawadros

Awadallah

Proceedings of the Institution of Mechanical Engineers, Part D:

et al. 2019

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This paper presents the use and development of a specific wireless torque measurement system that is used to obtain the transient torque performance of vehicle transmissions. The torque sensor is strain-based, using surface-mounted strain gauges on a prop shaft. The gauges are connected to a compact printed circuit board, which is clamped to the shaft next to the strain gauges using a three-dimensional printed housing. The printed circuit board contains an amplifier, low-pass filter, analog-to-digital converter, microcontroller and bluetooth transceiver. The printed housing is impact resistant carbon-reinforced nylon and securely retains the printed circuit board and the battery powering the device. The transmitted torque data are received by a transceiver, which is interfaced to a PC through an RS-232 connection. NI LabVIEW is used to process, display and save data. The wireless torque sensor was installed to the Unit Under Test at the output shaft of the five-speed manual transmission. The Unit Under Test was installed on a dynamometer for verification purposes and the transient torque was recorded under various operational conditions. The transient output torque of the manual transmission is measured and compared with results obtained from simulations performed under similar operating conditions. The two sets of transient responses show a good correlation with each other and hence demonstrate that the torque sensor meets the major design specifications. The data obtained will be used to enhance the fidelity of the software model.