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Electric Motorcycle Acceleration, Braking, and Regenerative Coast-Down Deceleration Testing and Analysis Momentum Engineering Corporation
- Format:
- Book
- Conference/Event
- Author/Creator:
- Phan, Chris, author.
- Conference Name:
- WCX SAE World Congress Experience (2023-04-18 : Detroit, Michigan, United States)
- Language:
- English
- Physical Description:
- 1 online resource cm
- Place of Publication:
- Warrendale, PA SAE International 2023
- Summary:
- Three fully electric motorcycles were tested and analyzed for acceleration, braking, and regenerative coast-down deceleration. A Zero DSR, BMW C-Evolution, and a Harley-Davidson LiveWire underwent each of the following test series. The first test series consisted of accelerating the electric motorcycles from a stop. For the second test series, the motorcycles were decelerated by using three different brake applications: front and rear brake application, front-only brake application, and rear-only brake application. For the third test series, regenerative coast-down deceleration was tested at different ride mode configurations. Regenerative braking systems are designed to convert the vehicles' kinetic energy into electrical potential energy during the vehicles' coast-down phase, resulting in a moderate deceleration. In addition to testing the vehicles' deceleration during its' regenerative coast-down phase, brake light activation delay relative to throttle roll-off was analyzed. All motorcycles were tested on factory available ride mode configurations (Zero: Eco and Sport, BMW: Eco Pro, Dynamic, Road, and Sail, Harley-Davidson: Range, Street, Rain, and Sport). Each motorcycle was instrumented with a VBOX 3i with NTRIP (Networked Transport of RTCM via Internet Protocol) RTK (Real-time kinematic positioning) accuracy to measure and document vehicle speed.The electric motorcycles tested produced a 0 60 mph acceleration range of 0.29 0.77 g. Average acceleration for all tested motorcycles and all modes available was calculated to be 0.53 g. For the braking test series including front and rear brake application, front-only, and rear-only brake application, the electric motorcycles braked at a deceleration range of 0.30 0.86 g. Average brake deceleration for all tested motorcycles and available ride modes was calculated to be 0.59 g. During the regenerative coast-down deceleration test series, the electric motorcycles decelerated at a range of 0.10 0.33 g. Average regenerative braking of all tested electric motorcycles and available modes was calculated to be 0.15 g. Brake light activation delay relative to accelerator throttle roll-off ranged from 0.05 1.1 sec. Average brake light activation delay was calculated to be 0.31 seconds relative to throttle roll-off. The results of this study will provide insight for accident reconstructionist to characterize acceleration, braking, and regenerative coast-down deceleration capabilities for the following electric motorcycles: Zero DSR, BMW C-Evolution, and Harley-Davidson LiveWire
- Notes:
- Vendor supplied data
- Publisher Number:
- 2023-01-0631
- Access Restriction:
- Restricted for use by site license
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