Is clean diesel the cleanest diesel in the tub? Not as previously hoped, according to a new report.
According to Green Car Reports, the International Council on Clean Transportation says most clean-diesel vehicles actually emit higher levels of nitrous oxide than what both the Euro 6 and U.S. Tier 2, Bin 5 standards allow. In particular, the amount of NOx produced by said vehicles exceeds the limits set by the Euro 6 standard seven times over.
The cause? "Transient increases in engine load typical of everyday driving (e.g., going up a slight incline)," as well as "normal regeneration events in the normal diesel exhaust aftertreatment systems."
The ICCT report — published last October — follows calls from environmental groups like Transport & Environment to bring test-cycle results in line with real-world driving conditions, such as the European Union's plan to cast aside the New European Drive Cycle for the Worldwide Harmonized Light-Vehicle Test Procedures.
The post Report: Clean Diesel NOx Levels Exceed European, US Standards appeared first on The Truth About Cars.
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