Two carburetted passenger cars of different makes, converted for CNG (Compressed Natural Gas) operation (in dual mode) and optimized by ARAI (The Automotive Research Association of India, Pune, India), were tested for vehicular performance. The respective engines were also mapped for performance, energy consumption and emission. The power loss in CNG mode was 7 percent and 15 percent and torque reduction was 21 percent and 15 percent in respective engines. There is considerable improvement in thermal efficiency and reduction of emission i the entire operating range. The vehicle performance on Chassis Dynamometer shows similar results. The second engine was also tested with a ceramic catalytic converter which gave 93 percent reduction in CO and 50 percent reduction in HC in major portion of operating range. 1100 cc car was also tested on the test track. Optimization work included installation of ARAI mixer design.
ARAI experiences on conversion of petrol (gasoline) engine vehicles to CNG operation
Erfahrungen der ARAI mit der Umstellung von Benzinmotorfahrzeugen auf den Betrieb mit verdichtetem Erdgas
SAE Technical Papers ; 1-15
1995
15 Seiten, 39 Bilder, 13 Tabellen, 15 Quellen
Conference paper
English
ARAI Experiences on Conversion of Petrol (Gasoline) Engine Vehicles to CNG Operation
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