A Novel Air Hybrid Engine Configuration Utilizing Cam-Based Valvetrain 2011-01-0871
In this work, a new air hybrid engine configuration is introduced in which cam-based valvetrain along with three-way and unidirectional valves make the implementation of different air hybrid engine operational modes possible. This configuration simplifies the air hybrid engine valvetrain significantly and relaxes the necessity of using fully flexible valvetrain in air hybrid engines. Utilizing the proposed configuration allows compression braking (CB), air motor (AM), startup and conventional modes of operation to be realized. The proposed configuration is modeled in GT-Power and the deceleration of a typical vehicle, utilizing only regenerative braking system, is simulated. The efficiency of the system in storing the vehicle's kinetic energy is determined using second law definition for efficiency. The stored energy can be used to either start up the engine or run the off-engine accessories. These two modes are studied and compared.
Citation: Fazeli, A., Khajepour, A., Devaud, C., and Pournazeri, M., "A Novel Air Hybrid Engine Configuration Utilizing Cam-Based Valvetrain," SAE Technical Paper 2011-01-0871, 2011, https://doi.org/10.4271/2011-01-0871. Download Citation
Author(s):
Amir Fazeli, Amir Khajepour, Cecile Devaud, Mohammad Pournazeri
Affiliated:
Univ. of Waterloo
Pages: 12
Event:
SAE 2011 World Congress & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Advanced Hybrid Vehicle Powertrains, 2011-SP-2308
Related Topics:
Hybrid engines
Regenerative braking
Braking systems
Terminology
Valves
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