Automotive transmissions are a key element in the powertrain that connects the power source to the drive wheels. To improve
fuel economy, reduce emissions, and enhance drivability, many new technologies have been introduced in automotive transmissions in recent years (Sun & Hebbale 2005
). Electronic control of automatic and continuously variable transmissions (CVTs) is considered briefly in this chapter, as
well as the related topic of clutch control for AWD vehicles.
Electronically controlled transmissions (ECT) are used to improve fuel economy, performance, drivability, and shift quality. It even may be possible – because of the flexibility provided by microcomputer software – to ...