Method and module for controlling a vehicle's speed based on rules and/or costs

US9108639B2 · kind B2 · utility

Assignee

• Scania CV AB · SE

Inventors

• Oskar Johansson · Stockholm, SE
• Maria Södergren · Stuvsta-Snättringe, SE
• Fredrik Roos · Stuvsta-Snättringe, SE

Key dates

• Filing date: Dec 22, 2011
• Grant date: Aug 18, 2015
• Expiry date: Dec 22, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/84
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A method for determination of at least one reference value for controlling a vehicle's speed is described. The method may entail making a first prediction vpredTnewret and a second prediction vpredTnewacc of a vehicle speed along a horizon, said first prediction based on an engine torque Tret which retards the vehicle as compared with a conventional cruise control, and said second prediction based on an engine torque Tacc which accelerates the vehicle as compared with a conventional cruise control; comparing said respective first prediction vpredTnewret and second prediction vpredTnewacc of the vehicle speed with a lower limit value vmin and/or an upper limit value vmax which delineate a range within which the vehicle's speed should be; and determining at least one reference value based on at least one of said respective comparisons and said first prediction vpredTnewret and second prediction vpredTnewacc of the vehicle speed along the horizon.