D.E.S.A.

AUTOMOBILE EMISSIONS RESULTS

*Sun SIS 900 protocol included running the cars on the dyno two miles at 25 mph. Engines in these tests overheated producing artifically high Nox readings. An auxiliary fan was used for cooling the radiator in the remaining tests. ** Exhaust gases taken before catalytic converter


Type Vehicle	Type Test	HC Before	HC after	HC% Reduction	CO Before	CO After	CO% Reduction	Nox Before	Nox After	Nox % Reduction
93 Ford Crown V	Dyno Sun Sis 900	20 ppm	9 ppm	55%	0.20%	0.01%	95%	11 ppm	38 ppm	*
97 GMC Jimmy	Dyno Sun Sis 900	41 ppm	8 ppm	80%	0.16%	0.02%	87%	271 ppm	636 ppm	*
97 Jeep Wrangler	Dyno Sun Sis 900	22 ppm	6 ppm	72%	0.02%	0.00%	100%	34 ppm	0 ppm	100%
88 Ford Bronco	Dyno Sun Sis 900	85 ppm	36 ppm	58%	0.16%	0.01%	94%	157 ppm	128 ppm	18%
95 Nissan Pathfinder	Dyno Sun Sis 900	92 ppm	8 ppm	91%	0.10%	0.00%	100%	162 ppm	0 ppm	100%
Range Rover	Dyno Sun Sis 900	202 ppm	47 ppm	77%	1.35%	0.08%	94%	not taken	not taken	not taken
88 Chey Suburban	Dyno Sun Sis 900	139 ppm	54 ppm	61%	0.32%	0.05%	84%	370 ppm	151 ppm	59%
96 Chevy Lumina	Dyno RM 240 **	.03g/mi	.02g/mi	33%	1.09g/mi	.2g/mi	80%	1.24g/mi	1.06g/mi	17%
87 Nissan 300 ZX	Static Bear Sys 4	265 ppm	10ppm	96%	1.09%	0.00%	100%	not taken	not taken	not taken
90 Ford Bronco 302	Static Bear Sys 4	135 ppm	.00ppm	100%	0.90%	0.00%	100%	not taken	not taken	not taken
87 Ford Bronco 351	Static Bear Sys 4	130 ppm	60 ppm	54%	0.90%	0.80%	11%	not taken	not taken	not taken
87 Honda CRX	Static Bear Sys 4	165 ppm	.00ppm	100%	0.80%	0.20%	75%	not taken	not taken	not taken
87 Toyota Pickup	Static Bear Sys 4	280 ppm	40 ppm	86%	1.50%	0.00%	100%	not taken	not taken	not taken