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Advantages in EE-Driwe 2nd Stage, Automated Mechanical Transmission for Commercial Vehicles
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English
Abstract
The 1st stage of automated mechanical transmission (AMT) was initiated in 1985 by Hino's development of EE-Drive, featuring a pneumatically-stroke-controlled, oil-sprayed coil spring type clutch.[1] [2]* This system made its way into city buses, thus expanding the market for automatic transmission (AT) in Japan. This paper introduces EE-Drive 2nd stage, to be installed mainly on medium-duty trucks, and featuring a hydraulic-pressure-controlled, oil-sprayed clutch.
This system is characterized by smooth starting through controlling the pressure of the clutch disk directly. It also features quick shifting, because it allows gears to be shifted with no clutch stroke, but rather through decreasing the pressure. This will prove competitive with AT with a torque converter (HAT) which will appear in the 1990's as a sophisticated electronically controlled AT (ECT).
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Citation
Momiyama, F., Harada, K., Kanemitsu, M., and Makita, Y., "Advantages in EE-Driwe 2nd Stage, Automated Mechanical Transmission for Commercial Vehicles," SAE Technical Paper 872252, 1987, https://doi.org/10.4271/872252.Also In
References
- Tanaka S. et al “Electronically Controlled Mechanical Automatic Transmission for Heavy Duty Trucks and Buses” SAE Paper No. 861050
- Momiyama F. et al. “System and Electronic Components of Automated Mechanical Transmission. HINO EE-Drive System” Journal of the Society of Automotive Engineers of Japan Inc. 41 2 255 264 1987
- Oda F. “Customers Field Report of Automated Mechanical Transmission for City Bus” Transaction of Technical Committee of Nippon Bus Association 35 77 88 1986
- “The Newest Information on Automatic Transmission for Truck and Bus” MOTOR VEHICLE 37 6 14 32 1987
- Hames Richard J. et al “DDEC 2-Advanced Electronic Diesel Control” SAE Paper No. 861049