electronic trans - Electronic transmissions Main controls...

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Electronic transmissions
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Main controls Shift timing is computer controlled Line pressure is computer controlled which controls shift feel Computer can engage limp in modes for transmission protection Computer can now engage TCC smoother
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Why????? Electronic controls provide immediate shift control Shifts are only as firm as necessary Computer can compensate for normal wear Valve bodies are less complicated
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Computer Can be separate from or part of engine computer May be called TCM or transmission control module Will share many engine sensors through a serial data bus
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Inputs The more information the computer knows, the better it can control shifting Common info needed from engine Engine RPM Engine load Throttle position Engine temperature
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Inputs continued Common info needed from trans Gear shift position Vehicle speed Turbine speed Output shaft speed on 4WD Transmission temperature
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This note was uploaded on 09/13/2011 for the course AUTOMOTIVE 241 taught by Professor Saxton during the Spring '11 term at Community College of Philadelphia.

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electronic trans - Electronic transmissions Main controls...

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