Patent · US Active

Method and apparatus to optimize engine warm up

US7487030B2 · kind B2 · utility

21Cited by

3References

18Claims

0Family size

Assignee

GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

Anthony H. Heap · Ann Arbor, US
John L. Lahti · Novi, US

Key dates

Filing date	Apr 19, 2007
Grant date	Feb 3, 2009
Priority date	—
Expiry date	Aug 7, 2027

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D2250/18
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

There is provided a method and an apparatus to minimize energy loss of an internal combustion engine during engine warm-up. This includes monitoring engine operating conditions, and estimating a future energy loss. A power loss and a rate of change in the estimated future energy loss are determined. An engine control scheme effective to minimize the power loss and the rate of change in the estimated future energy loss is executed during the engine warm-up.

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