Understanding Automotive Electronics P2

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Understanding Automotive Electronics P2

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The transmission provides a match between engine speed and vehicle speed. within its optimal performance range regardless of the vehicle load or speed. It provides a gear ratio between the engine speed and vehicle speed such that the engine provides adequate power to drive the vehicle at any speed. To accomplish this with a manual transmission, the driver selects the correct gear ratio from a set of possible gear ratios (usually three to five for passenger cars). An automatic transmission selects this gear ratio by means of an automatic control system. Most automatic transmissions have three forward gear ratios, although a...

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