This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Development of BS-III Open Loop CNG Engine for a Mini-truck
Technical Paper
2009-26-0037
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SIAT 2009
Language:
English
Abstract
Environmental degradation is on the rise due to an increased motor vehicle population. One of the strategies adopted to curb deteriorating environmental quality is the use of alternative fuels like Ethanol, Compressed Natural Gas (CNG) and Liquefied Petroleum Gas (LPG). Natural gas is the world’s most plentiful combustible fuel, abundantly available in all the continents. This naturally occurring fuel requires little or no treatment prior to use as compared to liquid petroleum products. Natural gas is also a low cost fuel.
This paper describes the open loop dedicated CNG engine development concept on a single cylinder engine. Water cooled Indirect Injection (IDI) diesel engine was converted to operate on natural gas with electronic ignition timing having a feature of change the spark ignition timing in regards to speed. In the CNG mode raw emissions and open loop Air/Fuel ratio for two Compression Ratios (CR) (9:1 and 11:1) were analyzed for hemispherical piston bowl geometry. Other exercises included study of exhaust emission of vehicle for CR (11:1) with/ without 3 way catalytic converters. Effect of different precious metal loading on exhaust emission was also studied.
The intake system length and air pre-filter area was optimized to maintain Air/Fuel ratio at stoichiometric values (0.98 to 1.05) with open loop gas supply system. Optimized compression ratio (11:1) shows 9-10% improvement in power and 8-11% improvement in brake specific fuel consumption. Engine was optimized with 3 way catalytic converter for proposed Bharat Stage-III (BS-III) norms with 48 % margin in CO, 70% margin in HC and 36 % margin in NOx.
Authors
Topic
Citation
Shinde, B., Adsure, S., Katkar, S., and Dhoble, A., "Development of BS-III Open Loop CNG Engine for a Mini-truck," SAE Technical Paper 2009-26-0037, 2009, https://doi.org/10.4271/2009-26-0037.Also In
References
- Iyengar, K. S., et al., “Development of BS-III CNG Engine for Light Commercial Vehicle” SAE Paper No. 2007-26-028 2007
- Kamel, Mostafa M. “The B5.9G Gas Engine Technology” SAE Paper No. 952649
- “Highly Advanced CNG Engine Technology for Passenger Cars” Friedl Hubert Dr.
- Poulton, M. L. “Alternative Fuels for Road Vehicles” Computational Mechanics publications 1994
- Corbo, P., et al., “Comparison Between Lean-Burn and Stoichiometric Technologies for CNG Heavy-Duty Engines” SAE Paper No. 950057 1995
- Lundqvist Ulf “CNG Technology for HD Vehicles, Opportunities and Challenges” AVL ITC, 2007-04-24
- Heywood John B. “Internal Combustion Engine Fundamentals” McGraw Hill International Editions 1988
- Patil, A. S Hable, V. G. “A System Approach to Automotive Air Intake System Development” SAE Paper No. 2005-26-011 2005
- Vermet Dominick A. Ferrone Christopher W. “A Review of Natural Gas Engine Development for the Fleet Operator” SAE Paper No. 942312
- Krishnan, S. et al., “Gasoline to Gas-Revolution” SAE Paper No. 2005-26-033
- Johansson Bengt Oisson, Krister “Combustion Chambers for Natural Gas SI Engines Part 1: Fluid Flow and Combustion” SAE Paper No. 950469 1995
- Johansson Bengt Olsson, Krister “Combustion Chambers for Natural Gas SI Engines Part II: “Combustion and Emission” SAE Paper No. 950517 1995
- Ishii, Mitsunori et al. “Experimental Studies on a Natural Gas Vehicle” SAE 942005 1994
- Middleton, Antony Neumann Barry Khatri, D. S. “Natural Gas Injection System for Buses and Trucks -Potential to Achieve Future Performance and Emission Norms” SAE Paper No. 2007-26-026 2007
- Siewert, R. M. Mitchell, P. J. Mulawa, P. A. “Environmental Potential of Natural Gas Fuel for Light-Duty Vehicles: An Engine Dynamometer Study of Exhaust Emission Control Strategies and Fuel Consumption” SAE Paper No. 932744 1993