HEDGE technology eliminates low-speed pre-ignition in highly boosted engines
Wednesday, June 30, 2010 - 15:42
in Physics & Chemistry
(PhysOrg.com) -- Southwest Research Institute (SwRI) has successfully demonstrated that its HEDGE (High-Efficiency, Dilute Gasoline Engine) technology, using cooled exhaust gas recirculation (EGR) and advanced ignition systems, suppresses low-speed pre-ignition in turbocharged gasoline direct-injection engines. Low-speed pre-ignition (LSPI) causes heavy engine knock and can seriously damage engine parts or cause complete engine failure.