Mexican Media Brands
Daimler Debuts 9-Speed Automatic
Daimler AG is introducing its new 9-speed automatic transmission in E-Class sedans and wagons equipped with the company's 6-cylinder diesel engine.
Share
Daimler AG is introducing its new 9-speed automatic transmission in E-Class sedans and wagons equipped with the company's 6-cylinder diesel engine.
Daimler says the 9-G Tronic gearbox will enable the E-Class to achieve a fuel efficiency rating as high as 44.4 mpg (5.3 liters per 100 km) on the European NCAP test cycle.
The transmission's 9.15 ratio spread produces a noticeable reduction in engine rpm at cruising speed: only 1,350 rpm at 120 kph (75 mph). The design also weighs less and occupies the same package space as the company's 7-speed automatic.
The gearbox architecture involves a relatively few four planetary gear sets, six shift elements and three speed sensors. The design represents the world's first to use a direct control system in a planetary 9-speed automatic, according to the company.
The transmission is equipped with a small, chain-driven mechanical main pump and a separate electric auxiliary pump. Daimler says the configuration allows oil flow to be controlled actively on demand, making it more compatible with an engine stop-start system.
RELATED CONTENT
-
on lots of electric trucks. . .Grand Highlander. . .atomically analyzing additive. . .geometric designs. . .Dodge Hornet. . .
EVs slowdown. . .Ram’s latest in electricity. . .the Grand Highlander is. . .additive at the atomic level. . .advanced—and retro—designs. . .the Dodge Hornet. . .Rimac in reverse. . .
-
On Automotive: An All Electric Edition
A look at electric vehicle-related developments, from new products to recycling old batteries.
-
Global Supply of Automotive Fasteners from a Single Source
PennEngineering offers a global supply for a wide range of fasteners for the automotive industry, including China-based facilities that manufacture standard and custom products to world-class standards of quality at lower cost.
