ARB Research Seminar

This page updated June 19, 2013

Demonstration of a Selective Catalitic Reduction System on a Marine Passenger Ferry

Christopher Weaver, P.E., President, Engine, Fuel, and Emissions Engineering, Inc.

July 07, 2010
Cal EPA Headquarters, 1001 "I" Street, Sacramento, CA

Research Project


The goal of this contract is to demonstrate a retrofit system for marine vessels which is intended to bring Tier 0 marine engines up to Tier 4 standards with the combination of Compact Selective Catalytic Reduction (SCR) systems and diesel particulate filters (DPF). Engine, Fuel, and Emissions Engineering, Inc. (EF&EE) has supplied Compact SCR(tm) systems for six vessels based in San Francisco: totalling 12 systems for the vessel main engines and two for generators. These systems are now operating satisfactorily. When installed on modern Tier 2 diesel engines, the Compact SCR system alone can easily achieve Tier 4 NOx emissions, and can approach Tier 4 PM levels. This project is applying a combination of Compact SCR and diesel particulate filters to the main propulsion and genset engines of M/V Royal Star. These are typical Tier 0 engines-built before emission standards were adopted. The goal of this installation is to reduce the NOx and PM emission levels from these engines to within Tier 4 standards.

Speaker Biography

Christopher Weaver, P.E., is the founder and President of Engine, Fuel, and Emissions Engineering, Inc., (EF&EE) Sacramento, California. He is an automotive engineer with more than 25 years of experience in the areas of internal combustion engine technology, fuels, combustion, emissions, and emission controls. His recent work has focused on vehicle emissions measurement, alternative fuels such as natural gas and ethanol, and post-combustion emission control systems such as diesel particulate filters and SCR.

Mr. Weaver is the inventor of EF&EE's patented "ride along" emission sampling system (RAVEM), providing the functionality of an EPA emission laboratory in a portable, cost-effective package. He has designed and managed emission testing programs on three continents, for vehicles ranging from passenger cars and buses to locomotives and ferry boats. He is currently directing projects to demonstrate EF&EE's Compact SCR™ technology on trucks, locomotives, ferryboats, and other non-road equipment.

As a consultant to the U.S. EPA during the 1980s, Mr. Weaver played an important role in the establishment of heavy-duty diesel emissions standards, sulfur and aromatic limits on diesel fuel, and the phase-out of leaded gasoline in the U.S. A preliminary study of emissions control for off-highway vehicles for EPA led to the inclusion of regulatory authority over such vehicles in the 1990 Clean Air Act amendments. More recently, Mr. Weaver served as an expert witness for the Justice Department in its landmark "defeat device" case against the major heavy-duty diesel engine manufacturers, and directed studies to assess technology for the proposed 2004 and 2007 heavy-duty engine emission standards.

As a technical consultant to the World Bank, Mr. Weaver played an important part in designing the Mexico City Transport Air Pollution Control Program, as well as similar efforts in Bangkok, São Paulo, Santiago de Chile, Buenos Aires and Colombo. He was one of three foreign experts contracted to advise the Bhure Lal committee appointed by the Indian Supreme Court to assess the court-ordered implementation of CNG buses and related control measures in Delhi. He has made substantial contributions to the worldwide phaseout of leaded gasoline - most recently, as the author of the "Implementer's Guide to Phasing Out Lead In Gasoline" distributed worldwide by the U.S. EPA and U.S. AID. Since 2004, he has served as an advisor to the U.N. Commission on Regional Development as a member of its expert panel on environmentally sustainable transport (EST).

Mr. Weaver was a senior engineer and project manager at Sierra Research for three years before leaving to form EF&EE. During this time, he also taught a post-graduate course in motor vehicle emissions and their control at Santa Maria Technical University in Chile. He was previously Group Leader of the Automotive Engineering and Emissions Control Group at Radian Corporation, and Director of Engineering at Energy and Resource Consultants. He holds a B.S. degree in Mechanical Engineering from Berkeley, with a minor in economics, and an M.S. in Mechanical Engineering from MIT. He is the author of more than two dozen technical papers and co-author of two books in the field of mobile-source emissions and their control.

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