This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Improvement of Transient Response on a Downsized 4 Cylinder Engine for Automobile Application
Technical Paper
2021-28-0280
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
Ever since mainstreaming of automobiles, engineers are focusing on making the vehicles better by means of making them more efficient, powerful and less polluting. In this study, venues of improving low end torque via improvement in volumetric efficiency as well as proper selection of turbochargers is done. An in-depth analysis of gas dynamics with respect to valve timing is studied along with the AVL Boost 1D simulation. It was found that volumetric efficiency starts to improve when there is a reduction in exhaust - exhaust valve overlap. There is an improvement found in the fresh air ratio (lambda) as the residual gas content is reduced. After the selection of valve timing, turbocharger optimization is done with comparison between two turbine sizes. Along with turbocharger comparison, technology comparison is also done namely between normal electronic VGT (Variable Geometry Turbo) (bigger turbine) and electronic VGT coupled with waste gate (smaller turbine). Dynamic as well as static performance is compared on vehicle level as well as testbed level. Time to torque (TTT) value was measured for the turbos and performance was compared for different lambda limits. A MATLAB tool was programmed to predict the vehicle level performance from the TTT values. The performance was validated on vehicle level as well. In summary, better low-end response was observed with smaller turbine size with 5% improvement in low end volumetric efficiency and similar efficiency at rated power.
Authors
- Praveer Kirtimohan Jain - Mahindra & Mahindra Ltd
- Chellapandi Chendil - Mahindra & Mahindra Ltd
- Shivam Asthana - Mahindra & Mahindra Ltd
- Nehal Sanjay - Mahindra & Mahindra Ltd
- Venkata Saikumar Meda - Mahindra & Mahindra Ltd
- Sivasubramamanian R - Mahindra & Mahindra Ltd
- Parag Daithankar - Mahindra & Mahindra Ltd
- Padmavathi Ramadandi - Mahindra & Mahindra Ltd
- Ranganathan RS - Turboenergy Limited
- Guru Sankar A - Turboenergy Limited
Citation
Jain, P., Chendil, C., Asthana, S., Sanjay, N. et al., "Improvement of Transient Response on a Downsized 4 Cylinder Engine for Automobile Application," SAE Technical Paper 2021-28-0280, 2021, https://doi.org/10.4271/2021-28-0280.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Unnamed Dataset 2 | ||
Unnamed Dataset 3 | ||
Unnamed Dataset 4 |
Also In
References
- Feneley , A. , Pesiridis , A. , and Andwari , A. Variable Geometry Turbocharger Technologies for Exhaust Energy Recovery and Boosting-A Review Renewable and Sustainable Energy Reviews 10.1016/j.rser.2016.12.125
- Saidur , R. , Rezaei , M. , Muzammil , W. , Hassan , M. Technologies to Recover Exhaust Heat from Internal Combustion Engines Renewable and Sustaniable Energy Reviews 10.1016/j.rser.2012.05.018
- Watanabe , T. , Koike , T. , Furukawa , H. , Ikeya , N. et al. Development of Turbocharger for Improving Passenger Car Acceleration SAE Technical Paper 960018 1996 https://doi.org/10.4271/960018
- Qian , Y. , Zhang , Z. , and Deng , K. Development of a Three-Phase Sequential Turbocharging System with Two Unequal-Size Turbochargers International Journal of Rotating Machinery 10.1155/2012/951096
- Lee , W. , Schubert , E. , Li , Y. , Li , S. et al. Electrification of Turbocharger and Supercharger for Downsized Internal Combustion Engines and Hybrid Electric Vehicles - Benefits and Challenges IEEE Transportation Electrification Conference and Expo (ITEC) 10.1109/TTE.2016.2620172
- Giakoumis , E. Review of Some Methods for Improving Transient Response in Automotive Diesel Engines through Various Turbocharging Configurations Frontiers in Mechanical Engineering 10.3389/fmech.2016.00004
- Lecointe , B. and Monnier , G. Downsizing a Gasoline Engine Using Turbocharging with Direct Injection SAE Technical Paper 2003-01-0542 2003 https://doi.org/10.4271/2003-01-0542
- Jain , P. , Pandi , C. , Ravi , U. , Sivasubramanian , R. et al. Thermodynamic Analysis of Turbocharger for a High Power Density Diesel Engine SAE Technical Paper 2019-26-0051 2019 10.4271/2019-26-0051
- Heywood , J.B. Internal Combustion Engine Fundamentals McGraw-Hill International Editions 1988