This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Reduction of Pulsation Noise in CNG Vehicles
Technical Paper
2013-26-0098
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Natural gas is increasingly being utilized for vehicle applications both to reduce vehicle emissions and as an alternate energy source to gasoline and diesel fuels. Natural gas can be used to reduce carbon dioxide emissions while the global distribution of natural gas allows energy independence for regions with gas rather than oil reserves. Thus natural gas as alternative vehicle fuel not only provides emission benefits but also provide an economical option in comparison to the Hybrid and Electric Vehicles. An increasing number of vehicles worldwide are being manufactured to run on CNG. CNG/NGV vehicles produce 20-30% less carbon dioxide than gasoline and diesel [1]. The CO2 contributes to global climate change due to greenhouse effect. Further CNG vehicles decrease noise pollution by having a smoother and more silent engine performance compared to gasoline and diesel engines.
The CNG injection technology is developed to obtain engine performance equivalent to gasoline engines unlike the conventional venturi system wherein the performance and drivability is compromised. One of the major challenge associated with using injector based CNG system is cabin noise due to the injector noise. The operational metallic and gas pulsation noise associated with sequential functioning of the gas injector is generally higher as compared to liquid fuels like gasoline due to dry nature of the CNG fuel. This paper describes the methodology adopted for reduction of CNG injector noise and suggests an experimental set up to predict the noise at early design stage. Experimental data suggests correlation between bench simulation and actual vehicle noise. The iterative process followed for improving the NVH performance by measurement of operational and gas pulsation noise from CNG injector can thus be avoided to reduce overall development time.
Recommended Content
Topic
Citation
Sachdeva, A. and Mansuri, S., "Reduction of Pulsation Noise in CNG Vehicles," SAE Technical Paper 2013-26-0098, 2013, https://doi.org/10.4271/2013-26-0098.Also In
References
- Gautam A , Garrick R , Lee J , Deminco C et al A Comparison of the Emissions from Gasoline vs. Compressed Natural Gas for an Electronic Fuel Injected Two Cylinder, Four-Stroke Engine SAE Technical Paper 2012-32-0016 2012 10.4271/2012-32-0016 2012
- French Mark , Nowland Maria Reducing Noise from Gasoline Engine Injectors International Journal of Vehicle Noise and Vibration 1479-1471