Presenter Information

John D. Crawford


Mechanical and Aerospace Engineering

Research Advisor

Drallmeier, J. A.

Advisor's Department

Mechanical and Aerospace Engineering


The objective of this project was to develop a throttle plate mechanism that can be used to simulate transient engine operation. This throttle plate was designed so as to regulate the quantity of air flow entering a Port Fuel Injected (PFI) spark ignition engine prior to the combustion of the fuel-air mixture. The throttle plate is linked to a data acquisition system in order to study the port fuel injection characteristics of the fuel-air mixture. This data acquisition system links the throttle plate angular position information to data obtained using a nonintrusive laser based diagnostic technique, therefore enabling the study of the effects of a transient throttle and injector.

Document Type


Presentation Date

29 Jan 1993