| EPSRC Reference: |
GR/M92768/01 |
| Title: |
JREI:MEASUREMENT CHARACTERISATION & DILUTION OF NANOPARTICLES EMITTED FROM INTERNAL COMBUSTION ENGINES |
| Principal Investigator: |
Collings, Professor N |
| Other Investigators: |
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| Project Partners: |
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| Department: |
Engineering |
| Organisation: |
University of Cambridge |
| Scheme: |
JREI |
| Starts: |
01 March 2000 |
Ends: |
31 August 2000 |
Value (£): |
149,357
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| EPSRC Research Topic Classifications: |
| Combustion |
Instrumentation Eng. & Dev. |
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| EPSRC Industrial Sector Classifications: |
| No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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Internal combustion engines are one of the major sources of suspended particles in the atmosphere. Several recent studies have shown strong correlations between inhalation of fine particulate matter and negative health effects, including increased risk of heart disease and increased mortality rates. There are good reasons to believe that the smallest particles produced ( nanoparticles , i.e. those particles smaller than 50nm in diameter) which contribute little to mass emissions, but which comprise the vast majority of number emissions, represent the chief threat to health. Evidence shows that the formation of these nanoparticles occurs primarily during the dilution process, as the hot exhaust gases mix with the atmosphere. Furthermore, the number of nanoparticles formed during dilution has been found to be extremely sensitive to the particular conditions under which dilution takes place. While this implies that a great deal of uncertainty exists in measurements reported in the literature (due to the lack of a standard technique for pre-measurement dilution of engine exhaust aerosols) it also implies that particulate emissions may be controlled through careful management of the dilution process. This proposal aims to characterise and measure the dilution process (thus enabling control of particulate emissions) by use of the equipment requested.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.cam.ac.uk |