AT 112 — AT 112
Automatic Transmissions and Transaxle Theory – 3 Credits Prerequisite: A grade of “C” or higher in AT 100 This course is designed to provide the theory and operation upon which most modern automatic transmission (AT) and transaxle designs are based. During this course, students will learn the operational theory of the automatic transmis - sion. Students will also study major component theory such as the torque converter, planetary gear set, multiple disc clutch pack, one-way clutches, bands and the valve body, including hydraulic circuits. Students will also study the hydraulic and electronic controls, which create the up and down shifts within the AT, as well as gear ratio theory.