Performance Characterization of a Triple Input Clutch, Layshaft Automatic Transmission Using Energy Analysis

Authors Abstract
Content
This paper details the design and operating attributes of a triple input clutch, layshaft automatic transmission (TCT) with a torque converter in a rear wheel drive passenger vehicle. The objectives of the TCT design are to reduce fuel consumption while increasing acceleration performance through the design of the gearing arrangement, shift actuation system and selection of gear ratios and progression. A systematic comparison of an 8-speed TCT design is made against a hypothetical 8-speed planetary automatic transmission (AT) with torque converter using an energy analysis model based upon empirical data and first principles of vehicle-powertrain systems. It was found that the 8-speed TCT design has the potential to provide an approximate 3% reduction in fuel consumption, a 3% decrease in 0-100 kph time and 30% reduction in energy loss relative to a comparable 8-speed planetary AT with an idealized logarithmic ratio progression.
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DOI
https://doi.org/10.4271/2013-01-9042
Pages
11
Citation
Robinette, D., "Performance Characterization of a Triple Input Clutch, Layshaft Automatic Transmission Using Energy Analysis," SAE Int. J. Engines. 6(4):1984-1994, 2013, https://doi.org/10.4271/2013-01-9042.
Additional Details
Publisher
Published
Dec 15, 2013
Product Code
2013-01-9042
Content Type
Journal Article
Language
English