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An Integrated Control Algorithm for an SI Engine and a CVT
Technical Paper
1999-01-0752
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A new integrated control system has been developed for controlling an SI engine and a CVT proactively so as to obtain the demanded drive torque most efficiently. Taking into account ease of calibration, a control system configuration has been achieved that determines the CVT ratio from the target drive torque and vehicle speed, based on the steady-state relationship between the demanded drive torque and the vehicle speed, gear ratio, engine torque and fuel economy. An analysis was made of drive torque characteristics while the ratio was changing under transient conditions. The results showed that using engine torque to compensate for the ratio change response lag and inertia torque, which is proportional to the differential of the gear ratio, is effective in improving drive torque responsiveness.
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Citation
Yasuoka, M., Uchida, M., Katakura, S., and Yoshino, T., "An Integrated Control Algorithm for an SI Engine and a CVT," SAE Technical Paper 1999-01-0752, 1999, https://doi.org/10.4271/1999-01-0752.Also In
References
- Adachi, K. et al. Robust Control System for Belt Continuously Variable Transmission JSAE Technical Paper 9740172 1997