Received the “Best Paper Award” at the 74th Society of Automotive Engineers of Japan

A paper written by Prof. Kotaro Tanaka, Director of the CRERC Center, was awarded the 74th Society of Automotive Engineers of Japan.

The title of the paper is “Effects of Different Driving Behavior during Actual Road Driving on Ammonia Emissions from Gasoline Vehicles”.

The three-way catalyst used in gasoline vehicles is capable of purifying nitrogen oxides, carbon monoxide and hydrocarbons simultaneously. However, ammonia emission from the three-way catalyst has been a social problem in recent years.

This paper describes the results of real driving emission measurement using a direct-injection gasoline vehicle equipped with a three-way catalyst and two types of Portable Emission Measurement System. Ammonia emissions during actual driving and the effects of different driving behaviors on ammonia emissions are discussed.

Under cold start conditions, carbon monoxide and ammonia emissions measured before engine warm-up was completed were almost constant and independent of driving behavior. In contrast, the influence of driver acceleration and deceleration behaviors after warm-up causes differences in ammonia emissions. The ammonia emissions after warm-up are dominated by the driver's acceleration/deceleration behavior.

This paper is highly evaluated for clarifying the emission factors and conditions of ammonia emissions under real driving conditions, which are required to be reduced in the future.

The 74th (2024) Japan Society of Automotive Technology (JSAAT). List of Awards.
https://www.jsae.or.jp/assoc/award/jigikai-award/list/2024ver/

(Left) Associate Professor Susumu Sato, Tokyo Institute of Technology; (Right) Professor Kotaro Tanaka, Ibaraki University.