Patent · US Active

System and method for avoiding engine underspeed and stall

US8918258B2 · kind B2 · utility

2Cited by

4References

20Claims

0Family size

Assignee

Caterpillar Inc. · US

Inventors

Brian D. Hoff · East Peoria, US
Michael J. Barngrover · Peoria, US
Mark E. Rettig · East Peoria, US

Key dates

Filing date	Oct 23, 2012
Grant date	Dec 23, 2014
Priority date	—
Expiry date	Apr 3, 2033

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60Y2300/56
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

System and method for controlling a transmission in response to transient torque events are disclosed. The method includes commanding a maximum transmission output torque; comparing the commanded output torque to a feedback torque to determine if they are equal; and incrementally increasing the transmission output torque until equal. A machine and a powertrain include a controller configured to command a maximum negative transmission output torque in response to a transient torque event, and incrementally increase the transmission output torque until such time as the transmission output torque is equal to or within a preset range of the feedback torque.

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