Interrelated power delivery controls – including engine control – Transmission control – Continuously variable friction transmission
Patent
1997-11-26
2000-03-07
Ta, Khoi Q.
Interrelated power delivery controls, including engine control
Transmission control
Continuously variable friction transmission
477 48, F16H 6100
Patent
active
060333391
ABSTRACT:
A method for controlling the transmission ratio of a belt variator in a transmission unit for a motor vehicle is provided. The method at least provides for a control manner whereby the transmission ratio is controlled as a function of gear change signals given by a driver of the motor vehicle. The control is carried out according to what is called a variogram which is defined by a plurality of predetermined fixed control lines (A-B-C-D-E-F) via following the control lines. The control lines are determined so that, when gearing up and gearing down, respectively, large rotational speed differences in each successive transition between the control lines (A-B-C-D-E-F) are avoided.
REFERENCES:
patent: 4659321 (1987-04-01), Miyawaki
patent: 4671140 (1987-06-01), Koshio
patent: 5609544 (1997-03-01), Lardy et al.
patent: 5688204 (1997-11-01), Runge et al.
patent: 5746678 (1998-05-01), Roovers et al.
patent: 5820513 (1998-10-01), Greenwood
patent: 5947861 (1999-09-01), Nobumoto
Aberson Frederik Ernst Carel van derHardt
Buckinx Ronald
Ta Khoi Q.
VCSI, naamloze vennootschap
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