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:
Oct. 23, 2001
Filed:
Jul. 31, 2000
Anne-Lise Grosmougin, Birmingham, MI (US);
Richard M. Avery, Jr., West Bloomfield, MI (US);
Detroit Diesel Corporation, Detroit, MI (US);
Abstract
A method of controlling fuel delivery in an internal combustion engine includes enabling split injection status without subjection to a temperature comparison while the engine operates in the start mode, and enabling split injection status without subjection to a time limit while the engine operates in the idle normal mode, but with subjection to the temperature comparison in the idle normal mode. In the method, a temperature threshold is established, an engine operating temperature is monitored, the engine operating temperature is compared to the temperature threshold. Further, the engine is operated in the start mode, and at that time, the split injection status is enabled without subjection to the temperature comparison. Thereafter, the engine is operated in the idle normal mode, and at that time, the split injection status is enabled without subjection to a time limit while the engine operates in the idle normal mode and the engine operating temperature falls below the temperature threshold to enhance cold temperature operation. Otherwise, when the operating temperature exceeds the temperature threshold during idle normal mode, the split injection status is disabled.