Patent · US Active

Adjusting system for camshafts of an internal combustion engine

US8651076B2 · kind B2 · utility

3Cited by

1References

16Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Jochen Walliser · Ulm, DE
Frank Richter · Frankfurt, DE
Ewald Schmitz · Daisendorf, DE

Key dates

Filing date	Oct 20, 2009
Grant date	Feb 18, 2014
Priority date	—
Expiry date	Feb 12, 2030

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01L2800/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An adjusting system for camshafts of an internal combustion engine having an emergency running function, comprising a phase shifter gearing with an input drive element driven by a crankshaft of an internal combustion engine, an output drive element which drives a camshaft of the internal combustion engine, and an actuating element, by means of which a relative rotation between the drive input element and the drive output element can be realized by means of a device for imparting a braking torque, which is variable for normal operation, to the actuating element. In the event of failure of the device and/or control thereof, an emergency running setting of the camshaft can be attained and maintained as a result of braking or respectively, arresting the actuating element.

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