Patent · US Active

Hybrid sweeper-scrubber control method and system

US9937918B2 · kind B2 · utility

0Cited by

6References

13Claims

0Family size

Assignee

Nilfisk A/S · DK

Inventors

Kale R. Johnson · Milford, US
Hanafi Habbas · Blaine, US
Wayne G. Lorenz · West St. Paul, US

Key dates

Filing date	Apr 20, 2012
Grant date	Apr 10, 2018
Priority date	—
Expiry date	Feb 9, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/62
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

The invention relates to a method and system for controlling an engine (552) in a sweeper-scrubber. An electrical system alternator (554) provides power to at least one cleaning function (576, 578, 580) of a self-propelled hybrid vehicle and to driven wheels. The operational load is monitored, and the running state of an internal combustion engine (552) is controlled based on the monitored operational load. A threshold charge, of an electrical system battery pack (556) is maintained.

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