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- By Jin-seung Lim Automatic Transmission Design Team
Hello! Cerato (known as Forte in some markets) has released a hatchback model to complete its full lineup along with the Cerato Sedan and Cerato Koup. In this posting, you’ll find more info about the 6-speed automatic transmission that improves Cerato’s fuel efficiency and acceleration.




About 300 basic patents have been acquired related to the unique layout featuring three planetary gearsets, two clutches and three brakes. In line with our plans to match performance with our design-led vehicles, Kia plans to develop basic technologies for a rear-wheel drive 8-speed transmission and a front-wheel drive 8-speed transmission to secure greater competitiveness in the automatic transmission market.
Additionally, Kia applied a Transmission Control Unit (TCU) with integrated input, control and output units to maintain optimal fuel consumption and performance levels. The input unit receives information related to input/output revolution, oil temperature, number of engine revolutions and engine torque, while the control unit assesses driving conditions and makes calculations to determine the transmission gear and control the oil pressure/damper clutch.
The solenoid valve operates on signals from the control unit and adjusts the oil pressure to control the transmission. In effect, this means that the 6-speed automatic transmission was developed to respond nimbly and accurately to various vehicle data and the driver’s intention, much like a manual transmission.
Meanwhile, the torque converter which relays the engine’s power to the vehicle is more compact and lightweight while offering higher capacity. The seal-type 2-pinion differential provides 50% improved durability while the hydraulic deviation adjustment valve body enhances the shift feel to deliver a smoother ride.

I hope you all have a chance to discover the joyful experience of our new 6-speed transmission with the Cerato.