Global innovations in automotive electronics are described, highlighting electronically controlled transmissions, suspensions, and variable-valve timing and lift. Among the developments in transmission systems is Ford's AXOD-E, engineered for optimum fuel economy and performance with consistent shift quality. General Motors' version of an electronically controlled four-speed automatic transmission, the 4T60-E, features one-way clutches on all forward speeds for smooth gear changes under all operating conditions These clutches automatically release one gear as the next one is applied. A General Motor's suspension system called Computer Command Ride uses a computer to automatically vary the damping rates of the suspension struts that control the up-and-down movement of the wheels. The system makes the damping softer or firmer, depending on vehicle speed and other driving conditions. Nissan Motors is offering a fully active suspension that uses an oil pump to produce hydraulic pressure that continuously negates the external forces-bounce (up-down), pitch (front-back), and roll (left-right)-that work to move the vehicle. Adjusting engine design to allow for low-end torque and high-end power is a trade-off that has been eliminated by a variable valve timing and lift electronic control system designed by engineers from American Honda.
Putting electronics to work in the 1991 car models
Kraftfahrzeugelektronik in Modellen des Jahres 1991 bei General Motors
IEEE Spectrum ; 27 , 12 ; 72-75
1990
4 Seiten, 2 Quellen
Aufsatz (Zeitschrift)
Englisch
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