This work introduces a new methodology to design transportation fuels offering improved efficiency and reduced emissions, aimed to complement both traditional and emerging engine technologies. Many of these emerging technologies are centered around exploiting low temperature combustion (LTC) strategies that offer improved efficiency and reduced emissions. However, a standardized fuel...
Low temperature combustion (LTC) engines offer improved efficiency and reduced emissions over traditional gasoline spark-ignited and diesel compression-ignition engines. The ability to produce fuels optimized for LTC engines could help increase efficiency and therefore improve fuel economy, insomuch that Federal fuel economy standards could be met. Currently, a fuel performance...
In 1976-77 and 2010, Oregon State University (OSU) excavated portions of the enlisted men’s barracks and privy at Fort Hoskins, a Civil War-era fort. In operation from 1856 to 1865, this fort served as part of a security network to protect and monitor the recently created Coast Indian Reservation. The...
Broadband absorption spectroscopy, by way of FTIR, was used to investigate the vapor cloud of a single millimeter sized liquid droplet suspended by a syringe as it evaporates at standard conditions. Single beam data were collected every 8 seconds resulting in a time-resolved record. Species concentrations were tracked using their...
Low-temperature combustion (LTC) engine concepts such as homogeneous charge compression ignition (HCCI)
offer the potential of improved efficiency and reduced emissions of NOₓ and particulates. However, engines can
only successfully operate in HCCI mode for limited operating ranges that vary depending on the fuel composition.
Unfortunately, traditional ratings such as...
A new metric for ranking the suitability of fuels in LTC engines was recently introduced, based on the
fraction of potential fuel savings achieved in the FTP-75 light-duty vehicle driving cycle. In the current study,
this LTC fuel performance index was calculated computationally and analyzed for a number of fuel...
Liquid transportation fuels require costly and time-consuming tests to characterize metrics, such as Research Octane Number (RON) for gasoline. If fuel sale restrictions requiring use of standard Cooperative Fuel Research (CFR) testing procedures do not apply, these tests may be avoided by using multivariate statistical models to predict RON and...
The droplet formation process in the vicinity of the nozzle exit and the behavior of a spreading droplet during impingement on a smooth glass surface were studied. Two nozzle geometries were tested. The first case was a stiff stainless steel nozzle plate 0.787 mm thick. The second case was a...
The noise problem in air conditioning systems is receiving ever
increasing attention because of the importance of noise on a comfortable
human environment. Some work has been done on the solutions
to the noise problem by an investigation of a few system elements.
The acourstical characteristics of dampers become more...
This thesis presents and discusses a method for comparing
the neutron flux of some calculational model with the actual
flux of a critical system. Both the theoretical and experimental
aspects of this method are investigated in this report.
Experiments were performed to find neutron energy dependent
data. These involved the...