trough@ihuxi.UUCP (Chris Scussel) (03/25/85)
Burning hydrogen in an internal combustion engine using air for an oxidizer would almost eliminate the hydrocarbon constituent of the exhaust. (After all, there isn't much carbon in air or hydrogen.) However, the high temperature and pressure would still cause various noxious nitrogen oxides to be generated, and possibly other goodies too, like ammonia and nitric acid. (Of course, if the vehicle hauled around its own oxygen too, this problem would be eliminated.) Chris Scussel AT&T Bell Labs ihnp4!ihuxi!trough