The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 23, 1999
Filed:
Mar. 13, 1998
Applicant:
Inventors:
Walter Piock, Hitzendorf, AT;
Martin Wirth, Hitzendorf, AT;
Assignee:
AVL List GmbH, Graz, AT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B / ;
U.S. Cl.
CPC ...
123295 ; 123305 ;
Abstract
In order to reduce No.sub.x and HC emissions during starting and warm-up of a throttled internal combustion spark-ignition engine with direct injection, the beginning of fuel injection into the combustion chamber is shifted into the compression phase, while the total air ratio .lambda. is 1 or slightly lean.