This post harks back a little to the last post, about Saab doing great things because they needed to be done that way rather than doing them because everyone else does them.
I just had a quick flick through Google Video and found this cool promo for Saab Trionic technology back in 1992.
First, they compare the exhaust emissions from a 9000 with trionic to an old 1950 92 2 stroke. Naturally there’s a difference. The 9000 has about 0.01% CO content whilst the 2 stroke has about 1.5%. Hydrocarbon measurements in parts-per-million are similarly distinct, with the 9000 having 10ppm and the 2 stroke about 2000ppm.
Then it gets interesting….they pipe the emissions from the 2-stroke exhaust pipe directly into the intake manifold of the 9000, which spikes briefly and then returns to the normal emissions level after Trionic kicks in. Great stuff. And Saab invented this technology themselves, folks.
You can watch the full video (about 2.5 minutes worth) here at Google Video: Saab Trionic Promo.
There’s some other cool Saab stuff there too, if you do a search under "Saab".