1993-11-01

Development Work on HMC'S Natural Gas-Fueled 1.5 L MPI DOHC Engine 931869

Thii paper describes Hyundai's research and development work on the dedicated compressed natural gas (CNG) engine, A conventional light duty gasoline engine, a 1.5 liter four cylinder DOHC, has been modified to run on natural gas (NG) by a gas injection system and engine dynamometer test has been performed with emphasis on optimizations of compression ratio and intake port. Also presented are the results on the exhaust emissions characteristic and the purification performance of three-way catalytic converters developed for NG engine. Fuel composition and THC emissions are analyzed quantitatively using gas chromatography devices.

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