Patent · US Expired

Valve strategy for operating a controlled auto-ignition four-stroke internal combustion engine

US7004124B2 · kind B2 · utility

5Cited by

19References

39Claims

0Family size

Assignee

General Motors LLC · US

Inventors

Tang-Wei Kuo · Troy, US
Barry L. Brown · Lake Orion, US
James A. Eng · Troy, US
Paul M. Najt · Bloomfield Hills, US

Key dates

Filing date	Jul 1, 2003
Grant date	Feb 28, 2006
Priority date	—
Expiry date	Jul 1, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

Low load operating point for a controlled auto-ignition four-stroke internal combustion engine is reduced without compromising combustion stability through a valve control operative to establish sub-atmospheric pressure conditions within the combustion chamber into which fuel and exhaust gases are introduced.

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