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At Present, I am a Scientist working at the
and a Ph.D. student in the
Mechanical Engineering Department.
What do we do there?
We measure engine performance and emissions for a variety of customers.
Why do we do that?
To help them, and us, understand and determine the effects of fuels, lubricants, exhaust aftertreatment devices, etc. on engine performance and emissions. We can also determine the performance of exhaust aftertreatment devices.
How do we do this?
We have a variety of engines, mostly diesel, on test stands which allow us to operate the engine and measure it's performance. We then connect any of an assortment of emissions analyzers to the engine's exhaust. We can measure gaseous emissions, including NOx, CO, CO2, HC, SO2, O2. However, we specialize in measuring particulate emissions. We can measure the concentration, the size distribution, and other properties of the exhaust particulates. To do this, we use variety of instruments, including an ELPI (Electrical Low Pressure Imapctor), an SMPS (Scanning Mobility Particle Sizer), a Sierra BG-1/BG-2 for dilution and to measure mass concentration, and Epiphaniometer, a Diffusion Charger, a PAS (Photoemission Aerosol Sizer) and others.
My Past Employers Include:
Hartzell Manufacturing which pretty much no longer exists.
3M
Cummins Engine Company
And way back before that I was here at the University, BME '90, and then, while working
hard in the real world, finished my MSME in '97. Here it is,
"High Speed Cycle Resolved Sampling of the Exhaust of a Direct Injection Diesel Engine"
Some useful information for past and present 4th floor inhabitants:
P & P FAQ
P & P Alumni List
(updated 8-1-2001)
Darrick D. Zarling
Email: dzarling@me.umn.edu
Office: Rm# 461,
612-624-3504
Mechanical Engineering
111 Church Street
Minneapolis, MN 55455-0150
Here is a link to Javasite.com.
Javasite.com
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Site maintained by
dzarling@me.umn.edu. |
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