AN ELECTRONIC CONTROL CONCEPT FOR A CONTINUOUSLY VARIABLE TRANSMISSION

It is shown that an electronic control concept can exploit the calibration capability of a continuously variable transmission (CVT), in terms of start-up clutch function, line pressure control and ratio change strategy. Additional features, as the free-wheeling in coast, can be incorporated leading to comfort and efficiency improvements. The first step towards a full electronic control concept is the Electronic Ratio Control providing two selectable drive modes. It is demonstrated that with this control concept optimum economy as well as good driveability and comfort can be offered, avoiding any compromise penalties. With the Electronic Ratio Control the customer could receive a device, which provides already a major portion of the potential advantages recognizable due to the distinct engine responsiveness and engine speed restriction.

Media Info

  • Features: Figures;
  • Pagination: p. 31-46

Subject/Index Terms

Filing Info

  • Accession Number: 00393089
  • Record Type: Publication
  • Source Agency: National Highway Traffic Safety Administration
  • Report/Paper Numbers: Proceeding, HS-037 234, HS-037 235
  • Files: HSL, USDOT
  • Created Date: Mar 29 1985 12:00AM