Patent · US Active

Method of compensating for engine speed overshoot

US7478621B2 · kind B2 · utility

0Cited by

9References

20Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Ronald Muetzel · Southern Pines, US
Robert Sayman · Eriskirch, DE
James DeVore · Laurinburg, US

Key dates

Filing date	Apr 11, 2006
Grant date	Jan 20, 2009
Priority date	—
Expiry date	Jan 15, 2027

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D2200/1012
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method for controlling the speed of internal combustion engines in heavy duty trucks and the like compensates for the overshoot, i.e., the difference between a targeted or commanded engine speed and a transient overspeed or underspeed. The method comprehends executing a program or subroutine where a throttle or engine speed change command is received by a controller, the engine speed change is monitored, a value of overshoot (on both an engine speed increase or decrease) is detected and the detected overshoot is subsequently utilized to temporarily reduce the speed change command, thereby effectively eliminating the overshoot and more positively and quickly arriving at the targeted engine speed.

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