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SVT Shelby GT500
O2 Heater Questions
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<blockquote data-quote="Vinnie_B" data-source="post: 16942052" data-attributes="member: 201678"><p>Engine coolant temp is key in pulse width modulating a resistance element of an oxygen sensor. </p><p></p><p></p><p> Pulse width modulating a resistance element of an oxygen sensor. The method quickly heats the resistance element of the oxygen sensor soon after start of the engine with a relatively <span style="color: rgb(184, 49, 47)">high duty cycle yielding wide pulse widths</span>. During a mid oxygen sensor temperature range, the method <span style="color: rgb(184, 49, 47)">decreasing the duty cycle and thereby the pulse width modulation</span>. And, upon the oxygen sensor reaching peak operating temperature range, the method <span style="color: rgb(184, 49, 47)">decreases the pulse width modulated voltage signal supplied to the oxygen sensor to relatively short duty cycled pulses</span>.</p><p></p><p></p><p></p><p></p><p>[ATTACH]1804084[/ATTACH][ATTACH]1804083[/ATTACH]</p></blockquote><p></p>
[QUOTE="Vinnie_B, post: 16942052, member: 201678"] Engine coolant temp is key in pulse width modulating a resistance element of an oxygen sensor. Pulse width modulating a resistance element of an oxygen sensor. The method quickly heats the resistance element of the oxygen sensor soon after start of the engine with a relatively [COLOR=rgb(184, 49, 47)]high duty cycle yielding wide pulse widths[/COLOR]. During a mid oxygen sensor temperature range, the method [COLOR=rgb(184, 49, 47)]decreasing the duty cycle and thereby the pulse width modulation[/COLOR]. And, upon the oxygen sensor reaching peak operating temperature range, the method [COLOR=rgb(184, 49, 47)]decreases the pulse width modulated voltage signal supplied to the oxygen sensor to relatively short duty cycled pulses[/COLOR]. [ATTACH]1804084[/ATTACH][ATTACH]1804083[/ATTACH] [/QUOTE]
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