Patent · US Active

Method and control arrangement for controlling vehicle freewheel with engine off and power steering

US11560173B2 · kind B2 · utility

0Cited by

3References

15Claims

0Family size

Assignee

Scania CV AB · SE

Inventors

Fredrik Roos · Stuvsta-Snättringe, SE
Oscar Flärdh · Stuvsta-Snättringe, SE
Peter Karlsson · Lund, SE

Key dates

Filing date	Mar 13, 2018
Grant date	Jan 24, 2023
Priority date	—
Expiry date	Jan 4, 2039

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60W2030/1809
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A method (300) and control arrangement (210) for controlling a vehicle (100) to freewheel with engine off. The vehicle (100) has an engine (260) for propelling the vehicle (100) and a hydraulic power steering system (400). The hydraulic power steering system (400) comprises a primary power steering pump (270a) arranged to be driven by the engine (260) and a secondary power steering pump (270b). The method (300) includes: determining (301) when to start freewheeling the vehicle (100) with its engine off; and prior to starting the freewheeling of the vehicle (100) with engine off, determining (302) to start the secondary power steering pump (270b).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.