SAE TECHNICAL PAPER SERIES Particulate Trap Technology Demonstrat ion at New York City Transit Authority Kong Ha and Ian Carmichael Ortech, Intl. John Walsh and Andy Skabowski New York City Transit Authority Laslo Goldberger New York City Dept. of Environmental Protection Reprinted from P-240 - Global Developments in Diesel Particulate Control The Engineering Society ** =For Advancing Mobility --Land Sea Air and Spacem International Congress and Exposition Detroit, Michigan February 25-March 1,1991 - -- 400 COMMONWEALTH DRIVE, WARRENDALE, PA 15096-0001 U.S.A. Downloaded from SAE International by University of British Columbia, Tuesday, September 25, 2018The pepers included in thk wlum? are absrraded and indexed in the SAE Global MW#y Database. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher. ISSN 01 48-71 91 Copyright 1991 Society of Automotive Engineers, Inc. Positions and opinions advanced in this paper are Persons wishing to submit papers to be considered for those of the author(s) and not necessarily those of presentation or publication through SAE should send SAE. The author is solely responsible for the content of the manuscript or a 300 word abstract of a proposed the paper. A process is available by which discussions manuscript to: Secretary, Engineering Activity Board, will be printed with the paper if it is published in SAE SAE. Transactions. For permission to publish this paper in full or in part, contact the SAE Publications Division. Printed in U.S.A. Downloaded from SAE International by University of British Columbia, Tuesday, September 25, 2018Particulate Trap Technology Demonstration at New York City Transit Authority Kong Ha and Ian Carmichael Ortech, Intl. John Walsh and Andy Skabowski New York City Transit Authority Laslo Goldberger New York City Dept. of Environmental Protection ABSTRACT In a further field evaluation of diesel particulate trap oxidizer systems the New York City Transit Authority (NYCTA) and ORTECH International have expanded their evaluation to include three more buses. The expansion of this program was two fold: 1) To further evaluate the ORTECH burner based trap system. 2) To evaluate a Donaldson Company Inc. (DCI) dual trap system utilizing an electric heater. 3) To evaluate a Webasto burner based trap system. Four additional revenue buses #4511, #4512, #4513 and #4517 were chosen for this evaluation, in addition to bus #I698 which was equipped with an ORTECH trap system, and has been in revenue service since April 1989. All four buses were retrofitted with new Detroit Diesel Corp. (DDC) DDEC controlled 6V92-TA California rated low NOx engines, with ATEC Allison transmissions. Buses #451 1 and #4512 were each retrofitted by ORTECH International of Mississauga, Canada with an ORTECH burner based system. This system consists of two catalyzed trap monolithic exhaust filters and a Webasto burner to promote regeneration. This system has proven to reduce emissions by 80 to 90 percent and is also effective in reducing hydrocarbon and carbon monoxide emissions. Both of these buses have been in service since October 1989. Bus #4517 was retrofitted by ORTECH with a DCI electric trap system. This system utilizes two non- catalyzed traps to collect particulate and an electric resistance heater to initiate regeneration. This system also reduces particulate 80 percent while having only minor effects to the operation of the vehicle. This bus has been in revenue service since February of 1990. A Campbell Scientific Datalogger was installed on this bus in May of 1990, further expanding the information database. The NYCTA has operated these vehicles on the M-15 route in midtown Manhattan. Their performance has been monitored and compared to a control fleet running on the same route to verify the durab