Transient SI Engine Emissions Measurements on the FTP75 Drive Cycle with a Fast Response CO Instrument Cambustion, Limited

Format:

Conference/Event

Author/Creator:

Hands, Tim, author.

Conference Name:

SAE International Fall Fuels & Lubricants Meeting & Exhibition (2001-09-24 : San Antonio, Texas, United States)

Spring Fuels & Lubricants Meeting & Exhibition (2002-05-06 : Reno, Nevada, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2001

Summary:

This paper describes the application of a non-dispersive infrared-based instrument designed to measure CO with a response time of 7ms. Spark ignition engine emission measurements recorded during the first 505 seconds of an FTP75 drive-cycle for a 4 cylinder engine are presented, including fast response hydrocarbon and NO measurements. An analysis of the engine-out (pre-catalyst) exhaust gas is provided. Data collected simultaneously with a standard emissions test stand and conventional dilution tunnel are compared to the high frequency measurements. Fast CO analysis provides new insight into cold-start fuelling calibration and cylinder-to-cylinder AFR variation. Under rich conditions, the strong dependence of CO production on the quantity of excess fuel allows a significantly faster estimate of engine stoichiometry than a UEGO sensor

Notes:

Vendor supplied data

Publisher Number:

2001-01-3540

Access Restriction:

Restricted for use by site license