Transport Research International Documentation (TRID) https://trid.trb.org/ en-us Copyright © 2026. National Academy of Sciences. All rights reserved. http://blogs.law.harvard.edu/tech/rss tris-trb@nas.edu (Bill McLeod) tris-trb@nas.edu (Bill McLeod) Transport Research International Documentation (TRID) https://trid.trb.org/Images/PageHeader-wTitle.jpg https://trid.trb.org/ EXHAUST EMISSION TESTS OF FOUR HEAVY DUTY GASOLINE SPARK-IGNITED ENGINES https://trid.trb.org/View/56461 Wed, 20 Sep 1978 00:00:00 GMT https://trid.trb.org/View/56461 NITROGEN OXIDE CONTROL WITH THE DELAYED-MIXING, STRATIFIED-CHARGE ENGINE CONCEPT https://trid.trb.org/View/56463 Wed, 20 Sep 1978 00:00:00 GMT https://trid.trb.org/View/56463 EXHAUST EMISSION AND FUEL ECONOMY CHARACTERIZATION OF A MODERN AUTOMOTIVE WANKEL ROTARY ENGINE https://trid.trb.org/View/69637 Wed, 26 Apr 1978 00:00:00 GMT https://trid.trb.org/View/69637