High Frequency Measurements of Pressure and Temperature Fluctuations in an Automotive Exhaust System During Steady State and Transient Driving Conditions Ford Research Laboratory

Format:

Conference/Event

Author/Creator:

McBride, J.R., author.

Conference Name:

SAE 2001 World Congress (2001-03-05 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2001

Summary:

Environmental concerns have prompted increasingly stringent government legislation regulating automotive fuel economy and emissions. Recent rules not only mandate lower total emissions, but also require on-board diagnostics which monitor the vehicle exhaust systems. In order to satisfy these requirements, new and improved exhaust gas sensors are continually being developed to serve as part of the engine feedback control and emissions monitoring systems. Before we can properly design these new sensors, we must attempt to better understand the harsh environment in which they will operate. In this paper, we examine the high frequency nature of pressure fluctuations found in the exhaust system for both steady state and transient engine operating conditions. We also investigate temperature fluctuations, but restrict these measurements to the sampling environment found in the packaging of a Ford Si-based microcalorimeter. Results from these studies elucidate the physical limitations imposed by the sampling environment and should help to better define design specifications for new sensors

Notes:

Vendor supplied data

Publisher Number:

2001-01-0227

Access Restriction:

Restricted for use by site license