An advanced diagnostic Thermal Imaging System (TIS), under development since 1994, has been successfully applied to experimental and production gasoline conventional pre-mixed and gasoline turbocharged direct injection (GTDI) reciprocating engines.  The TIS measures with exceptional fidelity the infra-red radiation emitted from combustion chamber component surfaces and gases based on Apogee proprietary and confidential information.  The TIS equipment consists of an optical probe assembly to access the combustion chambers and transmit the signals to a specialized detector equipped with a high-speed digital output IR focal plane array detector. 

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