Study of Technology for Detecting Pre-Ignition Conditions of ... - NIST

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List of Figures
CPSC-IAG95-1145
Schema~tic of Range-Fire Pre-Ignition Detection Facility. . . . . . . . . . . . . . 3
Pictorial diagram of the instrumented test area. . . . . . . . . . . . . . . . . . . . 10
Schema.tic of the plume thermocouple grid . . . . . . . . . . . . . . . . . . . . . . 11
Parametric experiments temperature versus time curves. . . . . . . . . . . . . . 19
Plot of jpan and food temperatures versus time for oil heated on the electric
range withther angehoodof f.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Plot of pan-bottom temperatures versus time for all tests on the electric
range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Plot of pan-bottom temperatures versus time for all tests on the high-output
g~r~ge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...23
Plot of pan-side temperatures versus time for all tests on the electric
range, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Plot of pan-side temperatures versus time for all tests on the high-output
gas range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Plot of vertical profile of pan-centerline temperatures in the plume versus
time for oil heated on the electric range with the range hood off . . . . . . . 27
Plot of vertical profile of temperatures 7.6 cm left of the pan centerline
versus lime for oil heated on the electric range with the range hood off . . 28
Plot of vertical profile of temperatures 7.6 cm right of the pan centerline
versus time for oil heated on the electric range with the range hood off . . 29
Plot of vertical profile of temperatures 15.2 cm left of the pan centerline
versus time for oil heated on the electric range with the range hood off . . 30
Plot of horizontal profile of temperatures 16.8 cm above the burner versus
time for oil heated on the electric range with the range hood off . . . . . . . 31
Plot of ‘horizontal profile of temperatures 37.1 cm above the burner versus
time for oil heated on the electric range with the range hood off . . . . . . . 32
Plot of “horizontal profile of temperatures 67.6 cm above the burner versus
time for oil heated on the electric range with the range hood off . . . . . . . 33
Plot of vertical-centerline temperature 37.1 cm above the burner versus
time foralltests onthe electric range . . . . . . . . . . . . . . . . . . . . . . . . . 34
Plot of vertical-centerline temperature 37.1 cm above the burner versus
time foralltest. sonthehigh-output gas range . . . . . . . . . . . . . . . . . . . 35
Plot of range and range hood temperatures versus time for oil heated on
theelectricr angewitht herarigehoodoff . . . . . . . . . . . . . . . . . . . . . . 36
Plot of range “8 o’clock” surface temperature versus time for all tests on
the electric range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Plot of range “8 o’clock” surface temperature versus time for all tests on
thehigh-output gas range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Plot of range hood inside surface temperature versus time for all tests on
the electric range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
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