Hydrogen Injection Can Make Diesel Exhaust Look Cleaner. The Carbon Math Still Fails.

CleanTechnica
By Michael BarnardJul 12, 2026, 10:44 am101 ptsTrending
A cleaner-looking diesel exhaust plume is evidence about smoke, not climate performance. Onboard hydrogen-injection systems ask customers to skip that distinction: they use electricity produced by the diesel engine to split water, feed the resulting hydrogen or oxyhydrogen back into the same engine, and then…

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