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Spectroscopic Investigation of Post-Injection Strategy Impact on Fuel Vapor within the Exhaust Line of a Light Duty Diesel Engine Supplied with Diesel/Butanol and Gasoline Blends Istituto Motori CNR
- Format:
- Conference/Event
- Author/Creator:
- Tornatore, Tornatore, author.
- Conference Name:
- 11th International Conference on Engines & Vehicles (2013-09-15 : Capri, Italy)
- Language:
- English
- Physical Description:
- 1 online resource
- Place of Publication:
- Warrendale, PA SAE International 2013
- Summary:
- In this paper, a high temporal resolution optical technique, based on the multi-wavelength UV-visible-near IR extinction spectroscopy, was applied at the exhaust of an automotive diesel engine to investigate the post-injection strategy impact on the fuel vapor.Experimental investigations were carried out using three fuels: commercial diesel (B5), a blend of 80% diesel with 20% by volume of gasoline (G20) and a blend of 80% diesel with 20% by volume of n-butanol (BU20). Experiments were performed at the engine speed of 2500rpm and 0.8MPa of brake mean effective pressure exploring two post-injection timings and two EGR rates.The optical diagnostic allowed evaluating, during the post-injection activation, the evolution of the fuel vapor in the engine exhaust line. The investigation was focused on the impact of post-injection strategy and fuel properties on the aptitude to produce hydrocarbon rich gaseous exhaust for the regeneration of diesel particulate trap (DPF).The main results showed that advanced start of post-injection produced UV optical signal with a slightly lower intensity due to a tiny energy thermal activity that reduced the fuel vapor amount in the exhaust. BU20 and G20 blends induced a higher concentration of fuel vapor within the exhaust manifold and consequently a lower tendency to lubrication oil dilution
- Notes:
- Vendor supplied data
- Publisher Number:
- 2013-24-0066
- Access Restriction:
- Restricted for use by site license
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