This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A Novel Air Hybrid Engine Configuration Utilizing Cam-Based Valvetrain
Technical Paper
2011-01-0871
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
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.
Recommended Content
Technical Paper | Elastomeric Regenerative Braking Sysytems |
Technical Paper | Development of an Updated Brake Chatter Test for Anti-Brake Chatter Transmission/Hydraulic Fluids |
Technical Paper | Solid-State Automotive liquid level Sensing System |
Authors
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.Also In
References
- Guzzella, L. Sciarretta, A. Vehicle Propulsion Systems Springer Berlin 2nd 2007
- Ehsani, M. Gao, Y. Gat, S., E. Emadi, A. 2005 Modern Electric Hybrid Electric, and Fuel Cell Vehicles CRC Press Washington, D.C., USA
- Higelin, P. Vasile, I. Charlet, A. Chamaillard, Y. Parametric optimization of a new hybrid pneumatic combustion engine concept Int. J. Engine Res. 5 N2 205 217 2004
- Schechter, M.M. “New Cycle for Automobile Engines,” SAE Technical Paper 1999-01-0623 1999 10.4271/1999-01-0623
- Tai, C. Tsao, T.-C Levin, M.B. Barta, G. et al. “Using Camless Valvetrain for Air Hybrid Optimization,” SAE Technical Paper 2003-01-0038 2003 10.4271/2003-01-0038
- Andersson, M. Johansson, B. Hultqvist, A. “An Air Hybrid for High Power Absorption and Discharge,” SAE Technical Paper 2005-01-2137 2005 10.4271/2005-01-2137
- Trajkovic, S. Tunestål, P. Johansson, B. Carlson, U. “Introductory Study of Variable Valve Actuation for Pneumatic Hybridization,” SAE Technical Paper 2007-01-0288 2007 10.4271/2007-01-0288
- Wang, Y. Megli, T. Haghgooie, M. Peterson, K.S. et al. “Modeling and Control of Electromechanical Valve Actuator,” SAE Technical Paper 2002-01-1106 2002 10.4271/2002-01-1106
- Tai, C. Tsao, T. “Control of an Electromechanical Camless Valve Actuator” Proceeding of the American Control Conference Anchorage, AK May 8 10 2002
- Giglio, V. Lorio, B. Police, G. di Gaeta, A. “Analysis of Advantages and of Problems of Electromechanical Valve Actuators,” SAE Technical Paper 2002-01-1105 2002 10.4271/2002-01-1105
- Pournazeri, M. Fazeli, A. Khajepour, A. “A Cam-Based Electro-Hydraulic Variable Valve Timing System for Pneumatic Hybrid Engines” ASME International Mechanical Engineering Congress and Exposition IMECE09 November 13 19 2009 Lake Buena Vista, Florida, USA Paper# 2009-10531
- Lee, C.-Y. Zhao, H. Ma, T. “Analysis of a Cost Effective Air Hybrid Concept,” SAE Technical Paper 2009-01-1111 2009 10.4271/2009-01-1111
- Fazeli, A. Khajepour, A. Devaud, C. Azad Lashgarian, N. “A New Air Hybrid Engine Using Throttle Control,” SAE Technical Paper 2009-01-1319 2009 10.4271/2009-01-1319
- Dönitz, C. Vasile, L. Onder, C. Guzzella, L. “Realizing a Concept for High Efficiency and Excellent Drivability: The Downsized and Supercharged Hybrid Pneumatic Engine,” SAE Technical Paper 2009-01-1326 2009 10.4271/2009-01-1326
- Donitz, C. Vasile, I. Onder, C. Guzzella, L. Modelling and optimizing two- and four-stroke hybrid pneumatic engines Proc. IMechE, Part D: J. Automobile Engineering
- Khajepour, A. Fazeli, A. Devaud, C. Azad, N. “Air compression method and apparatus,” PTC pending patent number: 090218-0028; 2010
- Carvalho, L. “Exergetic Analysis of Compressed Air for Vehicular Propulsion,” SAE Technical Paper 2008-36-0315 2008 10.4271/2008-36-0315
- Jurgen, R. Automobile Electronics Handbook New York McGrraw-Hill 1995
- Kluger, M. Harris, J. “Fuel Economy Benefits of Electric and Hydraulic Off Engine Accessories,” SAE Technical Paper 2007-01-0268 2007 10.4271/2007-01-0268
- Ali, I. Yang, K.-J. Kim, S.-J. “E3 System - A Two speed Accessory Belt Drive System for Reduced Fuel Consumption,” SAE Technical Paper 2008-01-1521 2008 10.4271/2008-01-1521
- Hosaka, T. Hamazaki, M. “Development of the Variable Valve Timing and Lift (Vtec) Engine for the Honda NSX,” SAE Technical Paper 910008 1991 10.4271/910008
- Cengel, Y. Boles, M. Thermodynamics: An Engineering Approach 6th McGraw-Hill Science 2006
- http://www.tdi-turbotwin.com/t30m.php