A Fuel Efficient Automatic Four-Speed Transmission for Light Trucks
811285
11/01/1981
- Event
- Content
- One phase of the broad General Motors program to improve fuel economy has been the design of an integral 4-speed automatic transmission that improves mileage in light trucks. This new overdrive unit features wide ratio gearing with 4-speeds and reverse from 2 planetary gear sets, a cpnverterclutch assembly, a variable capacity oil pump and extensive use of aluminum. Unique construction of several components produces a compact transmission that weighs only two pounds more than the 3-speed unit it replaces.
- Pages
- 14
- Citation
- Green, R., "A Fuel Efficient Automatic Four-Speed Transmission for Light Trucks," SAE Technical Paper 811285, 1981, https://doi.org/10.4271/811285.