Spectrographic Detection of Formaldehyde in an Engine Prior to Knock

Spectrographic Detection of Formaldehyde in an Engine Prior to Knock ~

GSRALDM. RASSWEILEH AND LLOYD WITHHOW, General Motors Research Laboratories, Detroit, Mich.

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By meuru of characteristic absorption bands, was hounded on one side the from p r e v i o u s work it has been that formaldehyde is formed end wall of the c o m b u s t i o n chamber as shown by the plan (%6,6)that,in the ease in the noninflarned gases in the knocking zone view at the top of Figure of k n o c k i n g combustion, the gases in the knocking zone unOf an Ofto rlsnning under knocking Whenoperating under knockdergo some chemical reaction condilinns on a variety