An Event Data Recorder, or EDR, is the “black box” networked into late-model cars and trucks. Just like aircraft applications, it’s designed to capture relevant onboard data before, during, and after a crash.
Why aren’t diesels supercharged from the factory? I understand turbos on racing engines that need lots of boost pressure, but it seems like on some of the newer OEM trucks a supercharger would work quite well.
When Tier 2 emissions standards went into effect in 2004, diesel engine manufacturers were tasked with finding a way to lower nitrogen oxide output. Their solution was found in the use of exhaust gas recirculation (EGR).