Significant changes in design concepts of heavy-duty vehicles have been made; vehicles have increased in size, multiple power principle is used in scrapers, and articulated concept is applied to material-handling vehicles; payload of earthmoving dump-trucks has been increased to 120 tons, bowl capacity of scrapers to 50 yd, and capacity of loaders to 15 yd; mechanical shift control systems are being replaced with other system types, controlled by air, hydraulics, or electricity; new electric shift control system by General Motors, Allison Div is easily adaptable to new vehicle concepts and offers additional advantages of shift inhibiting and increased transmission durability.
Electric controls for powershift transmissions
SAE -- Paper
SAE Meeting ; 1968 Control
1968
10 pages
Conference paper
English
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