Topic 3

Car Mechanics (UK) - - Automatic Gearboxes -


The ar­rival of so­phis­ti­cated elec­tron­ics helped to re­duce pro­duc­tion costs of au­to­matic trans­mis­sions, by do­ing away with ear­lier hy­dro-me­chan­i­cal con­trols. It also over­came some of the auto’s draw­backs. Self-learn­ing ‘fuzzy logic’ sys­tems could not only be pro­grammed with a wide range of com­plex al­go­rithms but could also adapt to dif­fer­ent driv­ing styles. Can­bus wiring tech­nol­ogy ad­vanced things fur­ther, per­mit­ting the trans­mis­sion’s ECU to com­mu­ni­cate with other com­puter mod­ules to pro­vide ad­di­tional func­tions, such as down­shift­ing un­der brak­ing.

In some of the lat­est mod­els, driv­ers can se­lect ‘sports’ and ‘win­ter’ set­tings man­u­ally, the for­mer en­cour­ag­ing higher en­gine speeds, while the lat­ter al­lows the car to start in se­cond or third gear, to min­imise the risk of wheel­spin from a stand­ing start.

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